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skia2/tests/SkSLGLSLTest.cpp
Ethan Nicholas 765d2feaa7 optimized SkSL inlining output 
We were previously defensively copying the arguments to inline functions
into temporary values in all cases. We now detect some cases where that
is not necessary and use the arguments directly.

Change-Id: I9739643157743fdbcefbac9f36be93ea6ecde6f7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/312489
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2020-08-26 13:08:53 +00:00

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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "src/sksl/SkSLCompiler.h"
#include "tests/Test.h"
// Note that the optimizer will aggressively kill dead code and substitute constants in place of
// variables, so we have to jump through a few hoops to ensure that the code in these tests has the
// necessary side-effects to remain live. In some cases we rely on the optimizer not (yet) being
// smart enough to optimize around certain constructs; as the optimizer gets smarter it will
// undoubtedly end up breaking some of these tests. That is a good thing, as long as the new code is
// equivalent!
static void test(skiatest::Reporter* r, const char* src, const SkSL::Program::Settings& settings,
const char* expected, SkSL::Program::Inputs* inputs,
SkSL::Program::Kind kind = SkSL::Program::kFragment_Kind) {
SkSL::Compiler compiler;
SkSL::String output;
std::unique_ptr<SkSL::Program> program = compiler.convertProgram(kind, SkSL::String(src),
settings);
if (!program) {
SkDebugf("Unexpected error compiling %s\n%s", src, compiler.errorText().c_str());
}
REPORTER_ASSERT(r, program);
if (program) {
*inputs = program->fInputs;
REPORTER_ASSERT(r, compiler.toGLSL(*program, &output));
if (program) {
SkSL::String skExpected(expected);
if (output != skExpected) {
SkDebugf("GLSL MISMATCH:\nsource:\n%s\n\nexpected:\n'%s'\n\nreceived:\n'%s'", src,
expected, output.c_str());
}
REPORTER_ASSERT(r, output == skExpected);
}
}
}
static void test(skiatest::Reporter* r, const char* src, const GrShaderCaps& caps,
const char* expected, SkSL::Program::Kind kind = SkSL::Program::kFragment_Kind) {
SkSL::Program::Settings settings;
settings.fCaps = &caps;
SkSL::Program::Inputs inputs;
test(r, src, settings, expected, &inputs, kind);
}
DEF_TEST(SkSLHelloWorld, r) {
test(r,
"void main() { sk_FragColor = half4(0.75); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(0.75);\n"
"}\n");
}
DEF_TEST(SkSLControl, r) {
test(r,
"void main() {"
"if (sqrt(2) > 5) { sk_FragColor = half4(0.75); } else { discard; }"
"int i = 0;"
"while (i < 10) { sk_FragColor *= 0.5; i++; }"
"do { sk_FragColor += 0.25; } while (sk_FragColor.x < 0.75);"
"for (int i = 0; i < 10; i++) {"
"if (i % 2 == 1) break; else continue;"
"}"
"return;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" if (sqrt(2.0) > 5.0) {\n"
" sk_FragColor = vec4(0.75);\n"
" } else {\n"
" discard;\n"
" }\n"
" int i = 0;\n"
" while (i < 10) {\n"
" sk_FragColor *= 0.5;\n"
" i++;\n"
" }\n"
" do {\n"
" sk_FragColor += 0.25;\n"
" } while (sk_FragColor.x < 0.75);\n"
" for (int i = 0;i < 10; i++) {\n"
" if (i % 2 == 1) break; else continue;\n"
" }\n"
" return;\n"
"}\n");
}
DEF_TEST(SkSLFunctions, r) {
test(r,
"float foo(float v[2]) { return v[0] * v[1]; }"
"void bar(inout float x) { float y[2], z; y[0] = x; y[1] = x * 2; z = foo(y); x = z; }"
"void main() { float x = 10; bar(x); sk_FragColor = half4(half(x)); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float x = 10.0;\n"
" {\n"
" float y[2], z;\n"
" y[0] = 10.0;\n"
" y[1] = 20.0;\n"
" float _inlineResultfloatfoofloat20;\n"
" {\n"
" _inlineResultfloatfoofloat20 = y[0] * y[1];\n"
" }\n"
" z = _inlineResultfloatfoofloat20;\n"
"\n"
" x = z;\n"
" }\n"
"\n"
" sk_FragColor = vec4(x);\n"
"}\n");
}
DEF_TEST(SkSLFunctionInlineThreshold, r) {
test(r,
"void tooBig(inout int x) {"
" ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x;"
" ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x;"
"}"
"void main() { int x = 0; tooBig(x); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"void tooBig(inout int x) {\n"
" ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n"
" ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n"
" ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n"
" ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n"
" ++x;\n ++x;\n"
"}\n"
"void main() {\n"
" int x = 0;\n"
" tooBig(x);\n"
"}\n"
);
test(r,
"inline void tooBig(inout int x) {"
" ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x;"
" ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x;"
"}"
"void main() { int y = 0; tooBig(y); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"void main() {\n"
" int y = 0;\n"
" {\n"
" ++y;\n ++y;\n ++y;\n ++y;\n ++y;\n ++y;\n"
" ++y;\n ++y;\n ++y;\n ++y;\n ++y;\n ++y;\n"
" ++y;\n ++y;\n ++y;\n ++y;\n ++y;\n ++y;\n"
" ++y;\n ++y;\n ++y;\n ++y;\n ++y;\n ++y;\n"
" ++y;\n ++y;\n ++y;\n ++y;\n ++y;\n ++y;\n"
" ++y;\n ++y;\n ++y;\n ++y;\n"
" }\n"
"\n"
"}\n"
);
test(r,
"inline void cantActuallyInline(inout int x) {"
" for (;;) {"
" ++x;"
" if (x > 10) return;"
" }"
"}"
"void main() { int x = 0; cantActuallyInline(x); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"void cantActuallyInline(inout int x) {\n"
" for (; ; ) {\n"
" ++x;\n"
" if (x > 10) return;\n"
" }\n"
"}\n"
"void main() {\n"
" int x = 0;\n"
" cantActuallyInline(x);\n"
"}\n");
}
DEF_TEST(SkSLOperators, r) {
test(r,
"void main() {"
"float x = 1, y = 2;"
"int z = 3;"
"x = x - x + y * z * x * (y - z);"
"y = x / y / z;"
"z = (z / 2 % 3 << 4) >> 2 << 1;"
"bool b = (x > 4) == x < 2 || 2 >= sqrt(2) && y <= z;"
"x += 12;"
"x -= 12;"
"x *= y /= z = 10;"
"b ||= false;"
"b &&= true;"
"b ^^= false;"
"z |= 0;"
"z &= -1;"
"z ^= 0;"
"z >>= 2;"
"z <<= 4;"
"z %= 5;"
"x = (float2(sqrt(1)) , 6);"
"z = (float2(sqrt(1)) , 6);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"void main() {\n"
" float x = 1.0, y = 2.0;\n"
" int z = 3;\n"
" x = -6.0;\n"
" y = -1.0;\n"
" z = 8;\n"
" bool b = false == true || 2.0 >= sqrt(2.0);\n"
" x += 12.0;\n"
" x -= 12.0;\n"
" x *= (y /= float(z = 10));\n"
" b ||= false;\n"
" b &&= true;\n"
" b ^^= false;\n"
" z |= 0;\n"
" z &= -1;\n"
" z ^= 0;\n"
" z >>= 2;\n"
" z <<= 4;\n"
" z %= 5;\n"
" x = float((vec2(sqrt(1.0)) , 6));\n"
" z = (vec2(sqrt(1.0)) , 6);\n"
"}\n");
}
DEF_TEST(SkSLFunctionInlineArguments, r) {
test(r,
"half basic(half x) {"
" return x * 2;"
"}"
"void main() {"
" sk_FragColor.x = basic(1);"
" half y = 2;"
" sk_FragColor.y = basic(y);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = 2.0;\n"
"\n"
" sk_FragColor.y = 4.0;\n"
"\n"
"}\n");
test(r,
"half parameterWrite(half x) {"
" x *= 2;"
" return x;"
"}"
"void main() {"
" sk_FragColor.x = parameterWrite(1);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float _inlineResulthalfparameterWritehalf0;\n"
" float _inlineArghalfparameterWritehalf1_0 = 1.0;\n"
" {\n"
" _inlineArghalfparameterWritehalf1_0 *= 2.0;\n"
" _inlineResulthalfparameterWritehalf0 = _inlineArghalfparameterWritehalf1_0;\n"
" }\n"
" sk_FragColor.x = _inlineResulthalfparameterWritehalf0;\n"
"\n"
"}\n");
test(r,
"void outParameter(inout half x) {"
" x *= 2;"
"}"
"void main() {"
" half x = 1;"
" outParameter(x);"
" sk_FragColor.x = x;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float x = 1.0;\n"
" {\n"
" x *= 2.0;\n"
" }\n"
"\n"
" sk_FragColor.x = x;\n"
"}\n");
test(r,
"void foo(out half x) {"
" ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x; ++x;"
" --x; --x; --x; --x; --x; --x; --x; --x; --x; --x; --x; --x; --x; --x; --x; --x; --x;"
" x = 42;"
"}"
"half bar(half y) {"
" foo(y);"
" return y;"
"}"
"void main() {"
" half z = 0;"
" bar(z);"
" sk_FragColor.x = z;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void foo(out float x) {\n"
" ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n"
" ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n ++x;\n"
" ++x;\n --x;\n --x;\n --x;\n --x;\n --x;\n --x;\n --x;\n"
" --x;\n --x;\n --x;\n --x;\n --x;\n --x;\n --x;\n --x;\n"
" --x;\n --x;\n"
" x = 42.0;\n"
"}\n"
"void main() {\n"
" float _inlineArghalfbarhalf1_0 = 0.0;\n"
" {\n"
" foo(_inlineArghalfbarhalf1_0);\n"
" }\n"
"\n"
" sk_FragColor.x = 0.0;\n"
"}\n");
}
DEF_TEST(SkSLMatrices, r) {
test(r,
"void main() {"
"float2x4 x = float2x4(1);"
"float3x2 y = float3x2(1, 0, 0, 1, float2(2, 2));"
"float3x4 z = x * y;"
"float3 v1 = float3x3(1) * float3(2);"
"float3 v2 = float3(2) * float3x3(1);"
"sk_FragColor = half4(half(z[0].x), half3(v1 + v2));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" mat3x4 z = mat2x4(1.0) * mat3x2(1.0, 0.0, 0.0, 1.0, vec2(2.0, 2.0));\n"
" vec3 v1 = mat3(1.0) * vec3(2.0);\n"
" vec3 v2 = vec3(2.0) * mat3(1.0);\n"
" sk_FragColor = vec4(z[0].x, v1 + v2);\n"
"}\n");
}
DEF_TEST(SkSLInterfaceBlock, r) {
test(r,
"uniform testBlock {"
"half x;"
"half y[2];"
"layout(binding=12) half3x2 z;"
"bool w;"
"};"
"void main() {"
" sk_FragColor = half4(x, y[0], y[1], 0);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"uniform testBlock {\n"
" float x;\n"
" float[2] y;\n"
" layout (binding = 12) mat3x2 z;\n"
" bool w;\n"
"};\n"
"void main() {\n"
" sk_FragColor = vec4(x, y[0], y[1], 0.0);\n"
"}\n");
test(r,
"uniform testBlock {"
"float x;"
"} test;"
"void main() {"
" sk_FragColor = half4(half(test.x));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"uniform testBlock {\n"
" float x;\n"
"} test;\n"
"void main() {\n"
" sk_FragColor = vec4(test.x);\n"
"}\n");
test(r,
"uniform testBlock {"
"float x;"
"} test[2];"
"void main() {"
" sk_FragColor = half4(half(test[1].x));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"uniform testBlock {\n"
" float x;\n"
"} test[2];\n"
"void main() {\n"
" sk_FragColor = vec4(test[1].x);\n"
"}\n");
}
DEF_TEST(SkSLStructs, r) {
test(r,
"struct A {"
"int x;"
"int y;"
"} a1, a2;"
"A a3;"
"struct B {"
"float x;"
"float y[2];"
"layout(binding=1) A z;"
"};"
"B b1, b2, b3;"
"void main() {"
" a1.x = 0;"
" b1.x = 0;"
" sk_FragColor.r = half(a1.x + b1.x);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"struct A {\n"
" int x;\n"
" int y;\n"
"} a1;\n"
"struct B {\n"
" float x;\n"
" float[2] y;\n"
" layout (binding = 1) A z;\n"
"} b1;\n"
"void main() {\n"
" a1.x = 0;\n"
" b1.x = 0.0;\n"
" sk_FragColor.x = float(a1.x) + b1.x;\n"
"}\n");
}
DEF_TEST(SkSLVersion, r) {
test(r,
"in float test; void main() { sk_FragColor.r = half(test); }",
*SkSL::ShaderCapsFactory::Version450Core(),
"#version 450 core\n"
"out vec4 sk_FragColor;\n"
"in float test;\n"
"void main() {\n"
" sk_FragColor.x = test;\n"
"}\n");
test(r,
"in float test; void main() { sk_FragColor.r = half(test); }",
*SkSL::ShaderCapsFactory::Version110(),
"#version 110\n"
"varying float test;\n"
"void main() {\n"
" gl_FragColor.x = test;\n"
"}\n");
}
DEF_TEST(SkSLUsesPrecisionModifiers, r) {
test(r,
"void main() { half x = 0.75; float y = 1; x++; y++;"
"sk_FragColor.rg = half2(x, half(y)); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float x = 0.75;\n"
" float y = 1.0;\n"
" x++;\n"
" y++;\n"
" sk_FragColor.xy = vec2(x, y);\n"
"}\n");
test(r,
"void main() { half x = 0.75; float y = 1; x++; y++;"
"sk_FragColor.rg = half2(x, half(y)); }",
*SkSL::ShaderCapsFactory::UsesPrecisionModifiers(),
"#version 400\n"
"precision mediump float;\n"
"precision mediump sampler2D;\n"
"out mediump vec4 sk_FragColor;\n"
"void main() {\n"
" mediump float x = 0.75;\n"
" highp float y = 1.0;\n"
" x++;\n"
" y++;\n"
" sk_FragColor.xy = vec2(x, y);\n"
"}\n");
}
DEF_TEST(SkSLMinAbs, r) {
test(r,
"void main() {"
"half x = -5;"
"sk_FragColor.r = min(abs(x), 6);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = min(abs(-5.0), 6.0);\n"
"}\n");
test(r,
"void main() {"
"half x = -5.0;"
"sk_FragColor.r = min(abs(x), 6.0);"
"}",
*SkSL::ShaderCapsFactory::CannotUseMinAndAbsTogether(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float minAbsHackVar0;\n"
" float minAbsHackVar1;\n"
" sk_FragColor.x = ((minAbsHackVar0 = abs(-5.0)) < (minAbsHackVar1 = 6.0) ? "
"minAbsHackVar0 : minAbsHackVar1);\n"
"}\n");
}
DEF_TEST(SkSLFractNegative, r) {
static constexpr char input[] =
"void main() {"
"float x = -42.0;"
"sk_FragColor.r = half(fract(x));"
"}";
static constexpr char output_default[] =
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = fract(-42.0);\n"
"}\n";
static constexpr char output_workaround[] =
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = (0.5 - sign(-42.0) * (0.5 - fract(abs(-42.0))));\n"
"}\n";
test(r, input, *SkSL::ShaderCapsFactory::Default(), output_default);
test(r, input, *SkSL::ShaderCapsFactory::CannotUseFractForNegativeValues(), output_workaround);
}
DEF_TEST(SkSLNegatedAtan, r) {
test(r,
"void main() { float2 x = float2(sqrt(2)); sk_FragColor.r = half(atan(x.x, -x.y)); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" vec2 x = vec2(sqrt(2.0));\n"
" sk_FragColor.x = atan(x.x, -x.y);\n"
"}\n");
test(r,
"void main() { float2 x = float2(sqrt(2)); sk_FragColor.r = half(atan(x.x, -x.y)); }",
*SkSL::ShaderCapsFactory::MustForceNegatedAtanParamToFloat(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" vec2 x = vec2(sqrt(2.0));\n"
" sk_FragColor.x = atan(x.x, -1.0 * x.y);\n"
"}\n");
}
DEF_TEST(SkSLModifiersDeclaration, r) {
test(r,
"layout(blend_support_all_equations) out;"
"layout(blend_support_all_equations) out;"
"layout(blend_support_multiply) out;"
"layout(blend_support_screen) out;"
"layout(blend_support_overlay) out;"
"layout(blend_support_darken) out;"
"layout(blend_support_lighten) out;"
"layout(blend_support_colordodge) out;"
"layout(blend_support_colorburn) out;"
"layout(blend_support_hardlight) out;"
"layout(blend_support_softlight) out;"
"layout(blend_support_difference) out;"
"layout(blend_support_exclusion) out;"
"layout(blend_support_hsl_hue) out;"
"layout(blend_support_hsl_saturation) out;"
"layout(blend_support_hsl_color) out;"
"layout(blend_support_hsl_luminosity) out;"
"void main() { }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"layout (blend_support_all_equations) out ;\n"
"layout (blend_support_all_equations) out ;\n"
"layout (blend_support_multiply) out ;\n"
"layout (blend_support_screen) out ;\n"
"layout (blend_support_overlay) out ;\n"
"layout (blend_support_darken) out ;\n"
"layout (blend_support_lighten) out ;\n"
"layout (blend_support_colordodge) out ;\n"
"layout (blend_support_colorburn) out ;\n"
"layout (blend_support_hardlight) out ;\n"
"layout (blend_support_softlight) out ;\n"
"layout (blend_support_difference) out ;\n"
"layout (blend_support_exclusion) out ;\n"
"layout (blend_support_hsl_hue) out ;\n"
"layout (blend_support_hsl_saturation) out ;\n"
"layout (blend_support_hsl_color) out ;\n"
"layout (blend_support_hsl_luminosity) out ;\n"
"void main() {\n"
"}\n");
}
DEF_TEST(SkSLHex, r) {
test(r,
"void main() {"
"int i1 = 0x0;"
"i1++;"
"int i2 = 0x1234abcd;"
"i2++;"
"int i3 = 0x7fffffff;"
"i3++;"
"int i4 = 0xffffffff;"
"i4++;"
"int i5 = -0xbeef;"
"i5++;"
"uint u1 = 0x0;"
"u1++;"
"uint u2 = 0x1234abcd;"
"u2++;"
"uint u3 = 0x7fffffff;"
"u3++;"
"uint u4 = 0xffffffff;"
"u4++;"
"ushort u5 = 0xffff;"
"u5++;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"void main() {\n"
" int i1 = 0;\n"
" i1++;\n"
" int i2 = 305441741;\n"
" i2++;\n"
" int i3 = 2147483647;\n"
" i3++;\n"
" int i4 = -1;\n"
" i4++;\n"
" int i5 = -48879;\n"
" i5++;\n"
" uint u1 = 0u;\n"
" u1++;\n"
" uint u2 = 305441741u;\n"
" u2++;\n"
" uint u3 = 2147483647u;\n"
" u3++;\n"
" uint u4 = 4294967295u;\n"
" u4++;\n"
" uint u5 = 65535u;\n"
" u5++;\n"
"}\n");
}
DEF_TEST(SkSLVectorConstructors, r) {
test(r,
"float2 v1 = float2(1);"
"float2 v2 = float2(1, 2);"
"float2 v3 = float2(float2(1));"
"float3 v4 = float3(float2(1), 1.0);"
"int2 v5 = int2(1);"
"int2 v6 = int2(float2(1, 2));"
"float2 v7 = float2(int2(1, 2));"
"void main() {"
"sk_FragColor.r = half(v1.x + v2.x + v3.x + v4.x + v5.x + v6.x + v7.x);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"vec2 v1 = vec2(1.0);\n"
"vec2 v2 = vec2(1.0, 2.0);\n"
"vec2 v3 = vec2(1.0);\n"
"vec3 v4 = vec3(vec2(1.0), 1.0);\n"
"ivec2 v5 = ivec2(1);\n"
"ivec2 v6 = ivec2(vec2(1.0, 2.0));\n"
"vec2 v7 = vec2(ivec2(1, 2));\n"
"void main() {\n"
" sk_FragColor.x = (((((v1.x + v2.x) + v3.x) + v4.x) + float(v5.x)) + float(v6.x)) + "
"v7.x;\n"
"}\n");
}
DEF_TEST(SkSLArrayConstructors, r) {
test(r,
"float test1[] = float[](1, 2, 3, 4);"
"float2 test2[] = float2[](float2(1, 2), float2(3, 4));"
"float4x4 test3[] = float4x4[]();"
"void main() {"
"sk_FragColor.r = half(test1[0] + test2[0].x + test3[0][0][0]);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"float test1[] = float[](1.0, 2.0, 3.0, 4.0);\n"
"vec2 test2[] = vec2[](vec2(1.0, 2.0), vec2(3.0, 4.0));\n"
"mat4 test3[] = mat4[]();\n"
"void main() {\n"
" sk_FragColor.x = (test1[0] + test2[0].x) + test3[0][0][0];\n"
"}\n");
}
DEF_TEST(SkSLConstArray, r) {
test(r,
"const half test[] = half[](1, 2, 3, 4);"
"void main() {"
"sk_FragColor = half4(test[0], test[1], test[2], test[3]);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"const float test[] = float[](1.0, 2.0, 3.0, 4.0);\n"
"void main() {\n"
" sk_FragColor = vec4(test[0], test[1], test[2], test[3]);\n"
"}\n");
}
DEF_TEST(SkSLDerivatives, r) {
test(r,
"void main() { sk_FragColor.r = half(dFdx(1)); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = dFdx(1.0);\n"
"}\n");
test(r,
"void main() { sk_FragColor.r = 1; }",
*SkSL::ShaderCapsFactory::ShaderDerivativeExtensionString(),
"#version 400\n"
"precision mediump float;\n"
"precision mediump sampler2D;\n"
"out mediump vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = 1.0;\n"
"}\n");
test(r,
"void main() { sk_FragColor.r = half(dFdx(1)); }",
*SkSL::ShaderCapsFactory::ShaderDerivativeExtensionString(),
"#version 400\n"
"#extension GL_OES_standard_derivatives : require\n"
"precision mediump float;\n"
"precision mediump sampler2D;\n"
"out mediump vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = dFdx(1.0);\n"
"}\n");
SkSL::Program::Settings settings;
settings.fFlipY = false;
auto caps = SkSL::ShaderCapsFactory::Default();
settings.fCaps = caps.get();
SkSL::Program::Inputs inputs;
test(r,
"void main() { sk_FragColor.r = half(dFdx(1)), sk_FragColor.g = half(dFdy(1)); }",
settings,
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" (sk_FragColor.x = dFdx(1.0) , sk_FragColor.y = dFdy(1.0));\n"
"}\n",
&inputs);
settings.fFlipY = true;
test(r,
"void main() { sk_FragColor.r = half(dFdx(1)), sk_FragColor.g = half(dFdy(1)); }",
settings,
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" (sk_FragColor.x = dFdx(1.0) , sk_FragColor.y = -dFdy(1.0));\n"
"}\n",
&inputs);
}
DEF_TEST(SkSLIntFolding, r) {
test(r,
"void main() {"
"sk_FragColor.r = 32 + 2;"
"sk_FragColor.r = 32 - 2;"
"sk_FragColor.r = 32 * 2;"
"sk_FragColor.r = 32 / 2;"
"sk_FragColor.r = 12 | 6;"
"sk_FragColor.r = 254 & 7;"
"sk_FragColor.r = 2 ^ 7;"
"sk_FragColor.r = 1 << 4;"
"sk_FragColor.r = 128 >> 2;"
"sk_FragColor.r = -1 == -1 ? 1 : -1;"
"sk_FragColor.r = -1 == -2 ? 2 : -2;"
"sk_FragColor.r = 0 != 1 ? 3 : -3;"
"sk_FragColor.r = 0 != 0 ? 4 : -4;"
"sk_FragColor.r = 6 > 5 ? 5 : -5;"
"sk_FragColor.r = 6 > 6 ? 6 : -6;"
"sk_FragColor.r = -1 < 0 ? 7 : -7;"
"sk_FragColor.r = 1 < 0 ? 8 : -8;"
"sk_FragColor.r = 6 >= 6 ? 9 : -9;"
"sk_FragColor.r = 6 >= 7 ? 10 : -10;"
"sk_FragColor.r = 6 <= 6 ? 11 : -11;"
"sk_FragColor.r = 6 <= 5 ? 12 : -12;"
"sk_FragColor.r = int(sqrt(1)) + 0;"
"sk_FragColor.r = 0 + int(sqrt(2));"
"sk_FragColor.r = int(sqrt(3)) - 0;"
"sk_FragColor.r = int(sqrt(4)) * 0;"
"sk_FragColor.r = int(sqrt(5)) * 1;"
"sk_FragColor.r = 1 * int(sqrt(6));"
"sk_FragColor.r = 0 * int(sqrt(7));"
"sk_FragColor.r = int(sqrt(8)) / 1;"
"sk_FragColor.r = 0 / int(sqrt(9));"
"int x = int(sqrt(2));"
"x += 1;"
"x += 0;"
"x -= 1;"
"x -= 0;"
"x *= 1;"
"x *= 2;"
"x /= 1;"
"x /= 2;"
"sk_FragColor.r = x;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = 34.0;\n"
" sk_FragColor.x = 30.0;\n"
" sk_FragColor.x = 64.0;\n"
" sk_FragColor.x = 16.0;\n"
" sk_FragColor.x = 14.0;\n"
" sk_FragColor.x = 6.0;\n"
" sk_FragColor.x = 5.0;\n"
" sk_FragColor.x = 16.0;\n"
" sk_FragColor.x = 32.0;\n"
" sk_FragColor.x = 1.0;\n"
" sk_FragColor.x = -2.0;\n"
" sk_FragColor.x = 3.0;\n"
" sk_FragColor.x = -4.0;\n"
" sk_FragColor.x = 5.0;\n"
" sk_FragColor.x = -6.0;\n"
" sk_FragColor.x = 7.0;\n"
" sk_FragColor.x = -8.0;\n"
" sk_FragColor.x = 9.0;\n"
" sk_FragColor.x = -10.0;\n"
" sk_FragColor.x = 11.0;\n"
" sk_FragColor.x = -12.0;\n"
" sk_FragColor.x = float(int(sqrt(1.0)));\n"
" sk_FragColor.x = float(int(sqrt(2.0)));\n"
" sk_FragColor.x = float(int(sqrt(3.0)));\n"
" sk_FragColor.x = 0.0;\n"
" sk_FragColor.x = float(int(sqrt(5.0)));\n"
" sk_FragColor.x = float(int(sqrt(6.0)));\n"
" sk_FragColor.x = 0.0;\n"
" sk_FragColor.x = float(int(sqrt(8.0)));\n"
" sk_FragColor.x = 0.0;\n"
" int x = int(sqrt(2.0));\n"
" x += 1;\n"
" x -= 1;\n"
" x *= 2;\n"
" x /= 2;\n"
" sk_FragColor.x = float(x);\n"
"}\n");
}
DEF_TEST(SkSLFloatFolding, r) {
test(r,
"void main() {"
"sk_FragColor.r = 32.0 + 2.0;"
"sk_FragColor.r = 32.0 - 2.0;"
"sk_FragColor.r = 32.0 * 2.0;"
"sk_FragColor.r = 32.0 / 2.0;"
"sk_FragColor.r = (12 > 2.0) ? (10 * 2 / 5 + 18 - 3) : 0;"
"sk_FragColor.r = 0.0 == 0.0 ? 1 : -1;"
"sk_FragColor.r = 0.0 == 1.0 ? 2 : -2;"
"sk_FragColor.r = 0.0 != 1.0 ? 3 : -3;"
"sk_FragColor.r = 0.0 != 0.0 ? 4 : -4;"
"sk_FragColor.r = 6.0 > 5.0 ? 5 : -5;"
"sk_FragColor.r = 6.0 > 6.0 ? 6 : -6;"
"sk_FragColor.r = 6.0 >= 6.0 ? 7 : -7;"
"sk_FragColor.r = 6.0 >= 7.0 ? 8 : -8;"
"sk_FragColor.r = 5.0 < 6.0 ? 9 : -9;"
"sk_FragColor.r = 6.0 < 6.0 ? 10 : -10;"
"sk_FragColor.r = 6.0 <= 6.0 ? 11 : -11;"
"sk_FragColor.r = 6.0 <= 5.0 ? 12 : -12;"
"sk_FragColor.r = half(sqrt(1) + 0);"
"sk_FragColor.r = half(0 + sqrt(2));"
"sk_FragColor.r = half(sqrt(3) - 0);"
"sk_FragColor.r = half(sqrt(4) * 0);"
"sk_FragColor.r = half(sqrt(5) * 1);"
"sk_FragColor.r = half(1 * sqrt(6));"
"sk_FragColor.r = half(0 * sqrt(7));"
"sk_FragColor.r = half(sqrt(8) / 1);"
"sk_FragColor.r = half(0 / sqrt(9));"
"sk_FragColor.r += 1;"
"sk_FragColor.r += 0;"
"sk_FragColor.r -= 1;"
"sk_FragColor.r -= 0;"
"sk_FragColor.r *= 1;"
"sk_FragColor.r *= 2;"
"sk_FragColor.r /= 1;"
"sk_FragColor.r /= 2;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = 34.0;\n"
" sk_FragColor.x = 30.0;\n"
" sk_FragColor.x = 64.0;\n"
" sk_FragColor.x = 16.0;\n"
" sk_FragColor.x = 19.0;\n"
" sk_FragColor.x = 1.0;\n"
" sk_FragColor.x = -2.0;\n"
" sk_FragColor.x = 3.0;\n"
" sk_FragColor.x = -4.0;\n"
" sk_FragColor.x = 5.0;\n"
" sk_FragColor.x = -6.0;\n"
" sk_FragColor.x = 7.0;\n"
" sk_FragColor.x = -8.0;\n"
" sk_FragColor.x = 9.0;\n"
" sk_FragColor.x = -10.0;\n"
" sk_FragColor.x = 11.0;\n"
" sk_FragColor.x = -12.0;\n"
" sk_FragColor.x = sqrt(1.0);\n"
" sk_FragColor.x = sqrt(2.0);\n"
" sk_FragColor.x = sqrt(3.0);\n"
" sk_FragColor.x = 0.0;\n"
" sk_FragColor.x = sqrt(5.0);\n"
" sk_FragColor.x = sqrt(6.0);\n"
" sk_FragColor.x = 0.0;\n"
" sk_FragColor.x = sqrt(8.0);\n"
" sk_FragColor.x = 0.0;\n"
" sk_FragColor.x += 1.0;\n"
" sk_FragColor.x -= 1.0;\n"
" sk_FragColor.x *= 2.0;\n"
" sk_FragColor.x /= 2.0;\n"
"}\n");
}
DEF_TEST(SkSLBoolFolding, r) {
test(r,
"void main() {"
"sk_FragColor.r = 1 == 1 || 2 == 8 ? 1 : -1;"
"sk_FragColor.r = 1 > 1 || 2 == 8 ? 2 : -2;"
"sk_FragColor.r = 1 == 1 && 2 <= 8 ? 3 : -3;"
"sk_FragColor.r = 1 == 2 && 2 == 8 ? 4 : -4;"
"sk_FragColor.r = 1 == 1 ^^ 1 != 1 ? 5 : -5;"
"sk_FragColor.r = 1 == 1 ^^ 1 == 1 ? 6 : -6;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = 1.0;\n"
" sk_FragColor.x = -2.0;\n"
" sk_FragColor.x = 3.0;\n"
" sk_FragColor.x = -4.0;\n"
" sk_FragColor.x = 5.0;\n"
" sk_FragColor.x = -6.0;\n"
"}\n");
}
DEF_TEST(SkSLShortCircuitBoolFolding, r) {
test(r,
"void main() {"
"bool expr1 = sk_FragCoord.x > 0;"
"bool expr2 = sk_FragCoord.y > 0;"
" if (true && expr1) {" // -> if (expr1)
" sk_FragColor.r = 1;"
" } else if (false && expr1) {" // -> if (false) -> block removed
" sk_FragColor.r = -2;"
" } else if (true ^^ expr1) {" // -> if (!expr1)
" sk_FragColor.r = 3;"
" } else if (false ^^ expr2) {" // -> if (expr2)
" sk_FragColor.r = 4;"
" } else if (false || expr2) {" // -> if (expr2)
" sk_FragColor.r = 5;"
" } else if (true || expr2) {" // -> if (true) -> replaces unreachable else
" sk_FragColor.r = 6;"
" } else {" // removed
" sk_FragColor.r = -7;"
" }"
// Test short-circuiting of right hand side boolean literals
" if (expr1 && true) {" // -> if (expr1)
" sk_FragColor.r = 1;"
" } else if (expr1 && false) {" // -> if (false) -> block removed
" sk_FragColor.r = -2;"
" } else if (expr1 ^^ true) {" // -> if (!expr1)
" sk_FragColor.r = 3;"
" } else if (expr2 ^^ false) {" // -> if (expr2)
" sk_FragColor.r = 4;"
" } else if (expr2 || false) {" // -> if (expr2)
" sk_FragColor.r = 5;"
" } else if (expr2 || true) {" // -> if (true) -> replaces unreachable else
" sk_FragColor.r = 6;"
" } else {" // removed
" sk_FragColor.r = -7;"
" }"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" bool expr1 = gl_FragCoord.x > 0.0;\n"
" bool expr2 = gl_FragCoord.y > 0.0;\n"
" if (expr1) {\n"
" sk_FragColor.x = 1.0;\n"
" } else if (!expr1) {\n"
" sk_FragColor.x = 3.0;\n"
" } else if (expr2) {\n"
" sk_FragColor.x = 4.0;\n"
" } else if (expr2) {\n"
" sk_FragColor.x = 5.0;\n"
" } else {\n"
" sk_FragColor.x = 6.0;\n"
" }\n"
" if (expr1) {\n"
" sk_FragColor.x = 1.0;\n"
" } else if (!expr1) {\n"
" sk_FragColor.x = 3.0;\n"
" } else if (expr2) {\n"
" sk_FragColor.x = 4.0;\n"
" } else if (expr2) {\n"
" sk_FragColor.x = 5.0;\n"
" } else {\n"
" sk_FragColor.x = 6.0;\n"
" }\n"
"}\n");
}
DEF_TEST(SkSLVecFolding, r) {
test(r,
"void main() {\n"
"sk_FragColor.r = half4(0.5, 1, 1, 1).x;\n"
"sk_FragColor = half4(half2(1), half2(2, 3)) + half4(5, 6, 7, 8);\n"
"sk_FragColor = half4(8, half3(10)) - half4(1);\n"
"sk_FragColor = half4(2) * half4(1, 2, 3, 4);\n"
"sk_FragColor = half4(12) / half4(1, 2, 3, 4);\n"
"sk_FragColor.r = (half4(12) / half4(1, 2, 3, 4)).y;\n"
"sk_FragColor.x = half4(1) == half4(1) ? 1.0 : -1.0;\n"
"sk_FragColor.x = half4(1) == half4(2) ? 2.0 : -2.0;\n"
"sk_FragColor.x = half2(1) == half2(1, 1) ? 3.0 : -3.0;\n"
"sk_FragColor.x = half2(1, 1) == half2(1, 1) ? 4.0 : -4.0;\n"
"sk_FragColor.x = half2(1) == half2(1, 0) ? 5.0 : -5.0;\n"
"sk_FragColor.x = half4(1) == half4(half2(1), half2(1)) ? 6.0 : -6.0;\n"
"sk_FragColor.x = half4(half3(1), 1) == half4(half2(1), half2(1)) ? 7.0 : -7.0;\n"
"sk_FragColor.x = half4(half3(1), 1) == half4(half2(1), 1, 0) ? 8.0 : -8.0;\n"
"sk_FragColor.x = half2(1) != half2(1, 0) ? 9.0 : -9.0;\n"
"sk_FragColor.x = half4(1) != half4(half2(1), half2(1)) ? 10.0 : -10.0;\n"
"sk_FragColor = half4(half(sqrt(1))) * half4(1);\n"
"sk_FragColor = half4(1) * half4(half(sqrt(2)));\n"
"sk_FragColor = half4(0) * half4(half(sqrt(3)));\n"
"sk_FragColor = half4(half(sqrt(4))) * half4(0);\n"
"sk_FragColor = half4(0) / half4(half(sqrt(5)));\n"
"sk_FragColor = half4(0) + half4(half(sqrt(6)));\n"
"sk_FragColor = half4(half(sqrt(7))) + half4(0);\n"
"sk_FragColor = half4(half(sqrt(8))) - half4(0);\n"
"sk_FragColor = half4(0) + half(half(sqrt(9)));\n"
"sk_FragColor = half4(0) * half(sqrt(10));\n"
"sk_FragColor = half4(0) / half(sqrt(11));\n"
"sk_FragColor = half4(1) * half(sqrt(12));\n"
"sk_FragColor = 0 + half4(half(sqrt(13)));\n"
"sk_FragColor = 0 * half4(half(sqrt(14)));\n"
"sk_FragColor = 0 / half4(half(sqrt(15)));\n"
"sk_FragColor = 1 * half4(half(sqrt(16)));\n"
"sk_FragColor = half4(half(sqrt(17))) + 0;\n"
"sk_FragColor = half4(half(sqrt(18))) * 0;\n"
"sk_FragColor = half4(half(sqrt(19))) * 1;\n"
"sk_FragColor = half4(half(sqrt(19.5))) - 0;\n"
"sk_FragColor = half(half(sqrt(20))) * half4(1);\n"
"sk_FragColor = half(half(sqrt(21))) + half4(0);\n"
"sk_FragColor = half(half(sqrt(22))) - half4(0);\n"
"sk_FragColor = half(half(sqrt(23))) / half4(1);\n"
"sk_FragColor = half4(half(sqrt(24))) / 1;\n"
"sk_FragColor += half4(1);\n"
"sk_FragColor += half4(0);\n"
"sk_FragColor -= half4(1);\n"
"sk_FragColor -= half4(0);\n"
"sk_FragColor *= half4(1);\n"
"sk_FragColor *= half4(2);\n"
"sk_FragColor /= half4(1);\n"
"sk_FragColor /= half4(2);\n"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = 0.5;\n"
" sk_FragColor = vec4(6.0, 7.0, 9.0, 11.0);\n"
" sk_FragColor = vec4(7.0, 9.0, 9.0, 9.0);\n"
" sk_FragColor = vec4(2.0, 4.0, 6.0, 8.0);\n"
" sk_FragColor = vec4(12.0, 6.0, 4.0, 3.0);\n"
" sk_FragColor.x = 6.0;\n"
" sk_FragColor.x = 1.0;\n"
" sk_FragColor.x = -2.0;\n"
" sk_FragColor.x = 3.0;\n"
" sk_FragColor.x = 4.0;\n"
" sk_FragColor.x = -5.0;\n"
" sk_FragColor.x = 6.0;\n"
" sk_FragColor.x = 7.0;\n"
" sk_FragColor.x = -8.0;\n"
" sk_FragColor.x = 9.0;\n"
" sk_FragColor.x = -10.0;\n"
" sk_FragColor = vec4(sqrt(1.0));\n"
" sk_FragColor = vec4(sqrt(2.0));\n"
" sk_FragColor = vec4(0.0);\n"
" sk_FragColor = vec4(0.0);\n"
" sk_FragColor = vec4(0.0);\n"
" sk_FragColor = vec4(sqrt(6.0));\n"
" sk_FragColor = vec4(sqrt(7.0));\n"
" sk_FragColor = vec4(sqrt(8.0));\n"
" sk_FragColor = vec4(sqrt(9.0));\n"
" sk_FragColor = vec4(0.0);\n"
" sk_FragColor = vec4(0.0);\n"
" sk_FragColor = vec4(sqrt(12.0));\n"
" sk_FragColor = vec4(sqrt(13.0));\n"
" sk_FragColor = vec4(0.0);\n"
" sk_FragColor = vec4(0.0);\n"
" sk_FragColor = vec4(sqrt(16.0));\n"
" sk_FragColor = vec4(sqrt(17.0));\n"
" sk_FragColor = vec4(0.0);\n"
" sk_FragColor = vec4(sqrt(19.0));\n"
" sk_FragColor = vec4(sqrt(19.5));\n"
" sk_FragColor = vec4(sqrt(20.0));\n"
" sk_FragColor = vec4(sqrt(21.0));\n"
" sk_FragColor = vec4(sqrt(22.0));\n"
" sk_FragColor = vec4(sqrt(23.0));\n"
" sk_FragColor = vec4(sqrt(24.0));\n"
" sk_FragColor += vec4(1.0);\n"
" sk_FragColor -= vec4(1.0);\n"
" sk_FragColor *= vec4(2.0);\n"
" sk_FragColor /= vec4(2.0);\n"
"}\n");
}
DEF_TEST(SkSLMatFolding, r) {
test(r,
"void main() {"
"sk_FragColor.x = float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) == "
"float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 1 : -1;"
"sk_FragColor.x = float2x2(float2(1.0, 0.0), float2(1.0, 1.0)) == "
"float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 2 : -2;"
"sk_FragColor.x = float2x2(1) == float2x2(1) ? 3 : -3;"
"sk_FragColor.x = float2x2(1) == float2x2(0) ? 4 : -4;"
"sk_FragColor.x = float2x2(1) == float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 5 : -5;"
"sk_FragColor.x = float2x2(2) == float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 6 : -6;"
"sk_FragColor.x = float3x2(2) == float3x2(float2(2.0, 0.0), float2(0.0, 2.0), float2(0.0))"
"? 7 : -7;"
"sk_FragColor.x = float2x2(1) != float2x2(1) ? 8 : -8;"
"sk_FragColor.x = float2x2(1) != float2x2(0) ? 9 : -9;"
"sk_FragColor.x = float3x3(float3(1.0, 0.0, 0.0), float3(0.0, 1.0, 0.0), "
"float3(0.0, 0.0, 0.0)) == float3x3(float2x2(1.0)) ? 10 : -10;"
"sk_FragColor.x = float2x2(float3x3(1.0)) == float2x2(1.0) ? 11 : -11;"
"sk_FragColor.x = float2x2(float4(1.0, 0.0, 0.0, 1.0)) == float2x2(1.0) ? 12 : -12;"
"sk_FragColor.x = float2x2(1.0, 0.0, float2(0.0, 1.0)) == float2x2(1.0) ? 13 : -13;"
"sk_FragColor.x = float2x2(float2(1.0, 0.0), 0.0, 1.0) == float2x2(1.0) ? 14 : -14;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = 1.0;\n"
" sk_FragColor.x = -2.0;\n"
" sk_FragColor.x = 3.0;\n"
" sk_FragColor.x = -4.0;\n"
" sk_FragColor.x = 5.0;\n"
" sk_FragColor.x = -6.0;\n"
" sk_FragColor.x = 7.0;\n"
" sk_FragColor.x = -8.0;\n"
" sk_FragColor.x = 9.0;\n"
" sk_FragColor.x = 10.0;\n"
" sk_FragColor.x = 11.0;\n"
" sk_FragColor.x = 12.0;\n"
" sk_FragColor.x = 13.0;\n"
" sk_FragColor.x = 14.0;\n"
"}\n");
}
DEF_TEST(SkSLConstantIf, r) {
test(r,
"void main() {"
"int x;"
"if (true) x = 1;"
"if (2 > 1) x = 2; else x = 3;"
"if (1 > 2) x = 4; else x = 5;"
"if (false) x = 6;"
"sk_FragColor.r = x;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = 5.0;\n"
"}\n");
}
DEF_TEST(SkSLCaps, r) {
test(r,
"void main() {"
"int x = 0;"
"int y = 0;"
"int z = 0;"
"if (sk_Caps.externalTextureSupport) x = 1;"
"if (sk_Caps.fbFetchSupport) y = 1;"
"if (sk_Caps.canUseAnyFunctionInShader) z = 1;"
"sk_FragColor = half4(x, y, z, 0.0);"
"}",
*SkSL::ShaderCapsFactory::VariousCaps(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(1.0, 0.0, 0.0, 0.0);\n"
"}\n");
}
DEF_TEST(SkSLTexture, r) {
test(r,
"uniform sampler1D one;"
"uniform sampler2D two;"
"void main() {"
"float4 a = sample(one, 0);"
"float4 b = sample(two, float2(0));"
"float4 c = sample(one, float2(0));"
"float4 d = sample(two, float3(0));"
"sk_FragColor = half4(half(a.x), half(b.x), half(c.x), half(d.x));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"uniform sampler1D one;\n"
"uniform sampler2D two;\n"
"void main() {\n"
" vec4 a = texture(one, 0.0);\n"
" vec4 b = texture(two, vec2(0.0));\n"
" vec4 c = textureProj(one, vec2(0.0));\n"
" vec4 d = textureProj(two, vec3(0.0));\n"
" sk_FragColor = vec4(a.x, b.x, c.x, d.x);\n"
"}\n");
test(r,
"uniform sampler1D one;"
"uniform sampler2D two;"
"void main() {"
"float4 a = sample(one, 0);"
"float4 b = sample(two, float2(0));"
"float4 c = sample(one, float2(0));"
"float4 d = sample(two, float3(0));"
"sk_FragColor = half4(half(a.x), half(b.x), half(c.x), half(d.x));"
"}",
*SkSL::ShaderCapsFactory::Version110(),
"#version 110\n"
"uniform sampler1D one;\n"
"uniform sampler2D two;\n"
"void main() {\n"
" vec4 a = texture1D(one, 0.0);\n"
" vec4 b = texture2D(two, vec2(0.0));\n"
" vec4 c = texture1DProj(one, vec2(0.0));\n"
" vec4 d = texture2DProj(two, vec3(0.0));\n"
" gl_FragColor = vec4(a.x, b.x, c.x, d.x);\n"
"}\n");
}
DEF_TEST(SkSLSharpen, r) {
SkSL::Program::Settings settings;
settings.fSharpenTextures = true;
sk_sp<GrShaderCaps> caps = SkSL::ShaderCapsFactory::Default();
settings.fCaps = caps.get();
SkSL::Program::Inputs inputs;
test(r,
"uniform sampler1D one;"
"uniform sampler2D two;"
"void main() {"
"float4 a = sample(one, 0);"
"float4 b = sample(two, float2(0));"
"float4 c = sample(one, float2(0));"
"float4 d = sample(two, float3(0));"
"sk_FragColor = half4(half(a.x), half(b.x), half(c.x), half(d.x));"
"}",
settings,
"#version 400\n"
"out vec4 sk_FragColor;\n"
"uniform sampler1D one;\n"
"uniform sampler2D two;\n"
"void main() {\n"
" vec4 a = texture(one, 0.0, -0.5);\n"
" vec4 b = texture(two, vec2(0.0), -0.5);\n"
" vec4 c = textureProj(one, vec2(0.0), -0.5);\n"
" vec4 d = textureProj(two, vec3(0.0), -0.5);\n"
" sk_FragColor = vec4(a.x, b.x, c.x, d.x);\n"
"}\n",
&inputs);
caps = SkSL::ShaderCapsFactory::Version110();
settings.fCaps = caps.get();
test(r,
"uniform sampler1D one;"
"uniform sampler2D two;"
"void main() {"
"float4 a = sample(one, 0);"
"float4 b = sample(two, float2(0));"
"float4 c = sample(one, float2(0));"
"float4 d = sample(two, float3(0));"
"sk_FragColor = half4(half(a.x), half(b.x), half(c.x), half(d.x));"
"}",
settings,
"#version 110\n"
"uniform sampler1D one;\n"
"uniform sampler2D two;\n"
"void main() {\n"
" vec4 a = texture1D(one, 0.0, -0.5);\n"
" vec4 b = texture2D(two, vec2(0.0), -0.5);\n"
" vec4 c = texture1DProj(one, vec2(0.0), -0.5);\n"
" vec4 d = texture2DProj(two, vec3(0.0), -0.5);\n"
" gl_FragColor = vec4(a.x, b.x, c.x, d.x);\n"
"}\n",
&inputs);
}
DEF_TEST(SkSLOffset, r) {
test(r,
"struct Test {"
"layout(offset = 0) int x;"
"layout(offset = 4) int y;"
"int z;"
"} test;"
"void main() {"
"Test t;"
"t.x = 0;"
"sk_FragColor.r = half(t.x);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" struct Test {\n"
" layout (offset = 0) int x;\n"
" layout (offset = 4) int y;\n"
" int z;\n"
" } t;\n"
" t.x = 0;\n"
" sk_FragColor.x = float(t.x);\n"
"}\n");
}
DEF_TEST(SkSLFragCoord, r) {
SkSL::Program::Settings settings;
settings.fFlipY = true;
sk_sp<GrShaderCaps> caps = SkSL::ShaderCapsFactory::FragCoordsOld();
settings.fCaps = caps.get();
SkSL::Program::Inputs inputs;
test(r,
"void main() { sk_FragColor.xy = half2(sk_FragCoord.xy); }",
settings,
"#version 110\n"
"#extension GL_ARB_fragment_coord_conventions : require\n"
"layout(origin_upper_left) in vec4 gl_FragCoord;\n"
"void main() {\n"
" gl_FragColor.xy = gl_FragCoord.xy;\n"
"}\n",
&inputs);
REPORTER_ASSERT(r, !inputs.fRTHeight);
caps = SkSL::ShaderCapsFactory::FragCoordsNew();
settings.fCaps = caps.get();
test(r,
"void main() { sk_FragColor.xy = half2(sk_FragCoord.xy); }",
settings,
"#version 400\n"
"layout(origin_upper_left) in vec4 gl_FragCoord;\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.xy = gl_FragCoord.xy;\n"
"}\n",
&inputs);
REPORTER_ASSERT(r, !inputs.fRTHeight);
caps = SkSL::ShaderCapsFactory::Default();
settings.fCaps = caps.get();
test(r,
"void main() { sk_FragColor.xy = half2(sk_FragCoord.xy); }",
settings,
"#version 400\n"
"uniform float u_skRTHeight;\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" vec4 sk_FragCoord = vec4(gl_FragCoord.x, u_skRTHeight - gl_FragCoord.y, "
"gl_FragCoord.z, gl_FragCoord.w);\n"
" sk_FragColor.xy = sk_FragCoord.xy;\n"
"}\n",
&inputs);
REPORTER_ASSERT(r, inputs.fRTHeight);
settings.fFlipY = false;
test(r,
"void main() { sk_FragColor.xy = half2(sk_FragCoord.xy); }",
settings,
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.xy = gl_FragCoord.xy;\n"
"}\n",
&inputs);
REPORTER_ASSERT(r, !inputs.fRTHeight);
test(r,
"in float4 pos; void main() { sk_Position = pos; }",
*SkSL::ShaderCapsFactory::CannotUseFragCoord(),
"#version 400\n"
"out vec4 sk_FragCoord_Workaround;\n"
"in vec4 pos;\n"
"void main() {\n"
" sk_FragCoord_Workaround = (gl_Position = pos);\n"
"}\n",
SkSL::Program::kVertex_Kind);
test(r,
"uniform float4 sk_RTAdjust; in float4 pos; void main() { sk_Position = pos; }",
*SkSL::ShaderCapsFactory::CannotUseFragCoord(),
"#version 400\n"
"out vec4 sk_FragCoord_Workaround;\n"
"uniform vec4 sk_RTAdjust;\n"
"in vec4 pos;\n"
"void main() {\n"
" sk_FragCoord_Workaround = (gl_Position = pos);\n"
" gl_Position = vec4(gl_Position.xy * sk_RTAdjust.xz + gl_Position.ww * sk_RTAdjust.yw,"
" 0.0, gl_Position.w);\n"
"}\n",
SkSL::Program::kVertex_Kind);
test(r,
"void main() { sk_FragColor.xy = half2(sk_FragCoord.xy); }",
*SkSL::ShaderCapsFactory::CannotUseFragCoord(),
"#version 400\n"
"in vec4 sk_FragCoord_Workaround;\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float sk_FragCoord_InvW = 1. / sk_FragCoord_Workaround.w;\n"
" vec4 sk_FragCoord_Resolved = vec4(sk_FragCoord_Workaround.xyz * "
"sk_FragCoord_InvW, sk_FragCoord_InvW);\n"
" sk_FragCoord_Resolved.xy = floor(sk_FragCoord_Resolved.xy) + vec2(.5);\n"
" sk_FragColor.xy = sk_FragCoord_Resolved.xy;\n"
"}\n");
}
DEF_TEST(SkSLWidthAndHeight, r) {
SkSL::Program::Settings settings;
sk_sp<GrShaderCaps> caps = SkSL::ShaderCapsFactory::Default();
settings.fCaps = caps.get();
SkSL::Program::Inputs inputs;
test(r,
"void main() { sk_FragColor.r = half(sk_FragCoord.x / sk_Width); }",
settings,
"#version 400\n"
"uniform float u_skRTWidth;\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = gl_FragCoord.x / u_skRTWidth;\n"
"}\n",
&inputs);
REPORTER_ASSERT(r, inputs.fRTWidth);
REPORTER_ASSERT(r, !inputs.fRTHeight);
test(r,
"void main() { sk_FragColor.r = half(sk_FragCoord.y / sk_Height); }",
settings,
"#version 400\n"
"uniform float u_skRTHeight;\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor.x = gl_FragCoord.y / u_skRTHeight;\n"
"}\n",
&inputs);
REPORTER_ASSERT(r, !inputs.fRTWidth);
REPORTER_ASSERT(r, inputs.fRTHeight);
}
DEF_TEST(SkSLClockwise, r) {
test(r,
"void main() { sk_FragColor = half4(sk_Clockwise ? +1 : -1); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(float(gl_FrontFacing ? 1 : -1));\n"
"}\n");
}
DEF_TEST(SkSLSampleMask, r) {
test(r,
"void main() { sk_SampleMask[0] |= 8; }",
*SkSL::ShaderCapsFactory::SampleMaskSupport(),
"#version 400\n"
"void main() {\n"
" gl_SampleMask[0] |= 8;\n"
"}\n");
}
DEF_TEST(SkSLVertexID, r) {
test(r,
"out int id; void main() { id = sk_VertexID; }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out int id;\n"
"void main() {\n"
" id = gl_VertexID;\n"
"}\n",
SkSL::Program::kVertex_Kind);
}
DEF_TEST(SkSLInstanceID, r) {
test(r,
"out int id; void main() { id = sk_InstanceID; }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out int id;\n"
"void main() {\n"
" id = gl_InstanceID;\n"
"}\n",
SkSL::Program::kVertex_Kind);
}
DEF_TEST(SkSLClipDistance, r) {
test(r,
"void main() { sk_ClipDistance[0] = 0; }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"void main() {\n"
" gl_ClipDistance[0] = 0.0;\n"
"}\n",
SkSL::Program::kVertex_Kind);
test(r,
"void main() { sk_FragColor = half4(half(sk_ClipDistance[0])); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(gl_ClipDistance[0]);\n"
"}\n");
}
DEF_TEST(SkSLArrayTypes, r) {
test(r,
"void main() { float2 x[2] = float2[2](float2(1), float2(2));"
"float2[2] y = float2[2](float2(3), float2(4));"
"sk_FragColor = half4(half2(x[0]), half2(y[1])); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(vec2[2](vec2(1.0), vec2(2.0))[0], "
"vec2[2](vec2(3.0), vec2(4.0))[1]);\n"
"}\n");
}
DEF_TEST(SkSLArrayIndexTypes, r) {
test(r,
"void main() { float array[4] = float[4](1, 2, 3, 4);\n"
"short x = 0;\n ushort y = 1;\n int z = 2;\n uint w = 3;\n"
"sk_FragColor = half4(half(array[x]), half(array[y]), half(array[z]), half(array[w])); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(float[4](1.0, 2.0, 3.0, 4.0)[0], "
"float[4](1.0, 2.0, 3.0, 4.0)[1], "
"float[4](1.0, 2.0, 3.0, 4.0)[2], "
"float[4](1.0, 2.0, 3.0, 4.0)[3]);\n"
"}\n");
}
DEF_TEST(SkSLGeometry, r) {
test(r,
"layout(points) in;"
"layout(invocations = 2) in;"
"layout(line_strip, max_vertices = 2) out;"
"void main() {"
"sk_Position = sk_in[0].sk_Position + float4(-0.5, 0, 0, sk_InvocationID);"
"EmitVertex();"
"sk_Position = sk_in[0].sk_Position + float4(0.5, 0, 0, sk_InvocationID);"
"EmitVertex();"
"EndPrimitive();"
"}",
*SkSL::ShaderCapsFactory::GeometryShaderSupport(),
"#version 400\n"
"layout (points) in ;\n"
"layout (invocations = 2) in ;\n"
"layout (line_strip, max_vertices = 2) out ;\n"
"void main() {\n"
" gl_Position = gl_in[0].gl_Position + vec4(-0.5, 0.0, 0.0, float(gl_InvocationID));\n"
" EmitVertex();\n"
" gl_Position = gl_in[0].gl_Position + vec4(0.5, 0.0, 0.0, float(gl_InvocationID));\n"
" EmitVertex();\n"
" EndPrimitive();\n"
"}\n",
SkSL::Program::kGeometry_Kind);
}
DEF_TEST(SkSLSwitch, r) {
// basic "does a switch even work" test
test(r,
"void main() {"
" float x;"
" switch (int(sqrt(1))) {"
" case 0:"
" x = 0.0;"
" break;"
" case 1:"
" x = 1.0;"
" break;"
" default:"
" x = 2.0;"
" }"
" sk_FragColor = half4(half(x));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float x;\n"
" switch (int(sqrt(1.0))) {\n"
" case 0:\n"
" x = 0.0;\n"
" break;\n"
" case 1:\n"
" x = 1.0;\n"
" break;\n"
" default:\n"
" x = 2.0;\n"
" }\n"
" sk_FragColor = vec4(x);\n"
"}\n");
// dead code inside of switch
test(r,
"void main() {"
" float x;"
" switch (int(sqrt(2))) {"
" case 0:"
" x = 0.0;"
" case 1:"
" x = 1.0;"
" default:"
" x = 2.0;"
" }"
" sk_FragColor = half4(half(x));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" switch (int(sqrt(2.0))) {\n"
" case 0:\n"
" ;\n"
" case 1:\n"
" ;\n"
" default:\n"
" ;\n"
" }\n"
" sk_FragColor = vec4(2.0);\n"
"}\n");
// non-static test w/ fallthrough
test(r,
"void main() {"
" float x = 0.0;"
" switch (int(sqrt(3))) {"
" case 0:"
" x = 0.0;"
" case 1:"
" x = 1.0;"
" }"
" sk_FragColor = half4(half(x));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float x = 0.0;\n"
" switch (int(sqrt(3.0))) {\n"
" case 0:\n"
" x = 0.0;\n"
" case 1:\n"
" x = 1.0;\n"
" }\n"
" sk_FragColor = vec4(x);\n"
"}\n");
// static test w/ fallthrough
test(r,
"void main() {"
" float x = 0.0;"
" switch (0) {"
" case 0:"
" x = 0.0;"
" case 1:"
" x = 1.0;"
" }"
" sk_FragColor = half4(half(x));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(1.0);\n"
"}\n");
// static test w/ fallthrough, different entry point
test(r,
"void main() {"
" float x = 0.0;"
" switch (1) {"
" case 0:"
" x = 0.0;"
" case 1:"
" x = 1.0;"
" }"
" sk_FragColor = half4(half(x));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(1.0);\n"
"}\n");
// static test w/ break
test(r,
"void main() {"
" float x = 0.0;"
" switch (0) {"
" case 0:"
" x = 0.0;"
" break;"
" case 1:"
" x = 1.0;"
" }"
" sk_FragColor = half4(half(x));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(0.0);\n"
"}\n");
// static test w/ static conditional break
test(r,
"void main() {"
" float x = 0.0;"
" switch (0) {"
" case 0:"
" x = 0.0;"
" if (x < 1) break;"
" case 1:"
" x = 1.0;"
" }"
" sk_FragColor = half4(half(x));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(0.0);\n"
"}\n");
// static test w/ non-static conditional break
test(r,
"void main() {"
" float x = 0.0;"
" switch (0) {"
" case 0:"
" x = 0.0;"
" if (x < sqrt(1)) break;"
" case 1:"
" x = 1.0;"
" }"
" sk_FragColor = half4(half(x));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float x = 0.0;\n"
" switch (0) {\n"
" case 0:\n"
" x = 0.0;\n"
" if (0.0 < sqrt(1.0)) break;\n"
" case 1:\n"
" x = 1.0;\n"
" }\n"
" sk_FragColor = vec4(x);\n"
"}\n");
// static test w/ break in a block
test(r,
"void main() {"
" float x = 0.0;"
" switch (0) {"
" case 0: {"
" x = 0.0;"
" sk_FragColor = half4(half(x));"
" break;"
" }"
" case 1:"
" x = 1.0;"
" }"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" {\n"
" {\n"
" sk_FragColor = vec4(0.0);\n"
" }\n"
" }\n"
"}\n");
// static test w/ static conditional break in a block
test(r,
"void main() {"
" float x = 0.0;"
" switch (0) {"
" case 0:"
" x = 0.0;"
" if (x < 1) { sk_FragColor = half4(half(x)); break; }"
" case 1:"
" x = 1.0;"
" }"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" {\n"
" {\n"
" sk_FragColor = vec4(0.0);\n"
" }\n"
" }\n"
"}\n");
// static test w/ non-static conditional break in a block
test(r,
"void main() {"
" float x = 0.0;"
" switch (0) {"
" case 0:"
" x = 0.0;"
" if (x < sqrt(1)) { sk_FragColor = half4(half(x)); break; }"
" case 1:"
" x = 1.0;"
" }"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" switch (0) {\n"
" case 0:\n"
" ;\n"
" if (0.0 < sqrt(1.0)) {\n"
" sk_FragColor = vec4(0.0);\n"
" break;\n"
" }\n"
" case 1:\n"
" ;\n"
" }\n"
"}\n");
}
DEF_TEST(SkSLRectangleTexture, r) {
test(r,
"uniform sampler2D test;"
"void main() {"
" sk_FragColor = sample(test, float2(0.5));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"uniform sampler2D test;\n"
"void main() {\n"
" sk_FragColor = texture(test, vec2(0.5));\n"
"}\n");
test(r,
"uniform sampler2DRect test;"
"void main() {"
" sk_FragColor = sample(test, float2(0.5));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"uniform sampler2DRect test;\n"
"void main() {\n"
" sk_FragColor = texture(test, vec2(0.5));\n"
"}\n");
test(r,
"uniform sampler2DRect test;"
"void main() {"
" sk_FragColor = sample(test, float3(0.5));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"uniform sampler2DRect test;\n"
"void main() {\n"
" sk_FragColor = texture(test, vec3(0.5));\n"
"}\n");
}
DEF_TEST(SkSLUnusedVars, r) {
test(r,
"void main() {"
"float a = 1, b = 2, c = 3;"
"float d = c;"
"float e = d;"
"b++;"
"d++;"
"sk_FragColor = half4(half(b), half(b), half(d), half(d));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float b = 2.0;\n"
" float d = 3.0;\n"
" b++;\n"
" d++;\n"
" sk_FragColor = vec4(b, b, d, d);\n"
"}\n");
}
DEF_TEST(SkSLMultipleAssignments, r) {
test(r,
"void main() {"
"float x;"
"float y;"
"int z;"
"x = y = z = 1;"
"sk_FragColor = half4(z);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(1.0);\n"
"}\n");
}
DEF_TEST(SkSLComplexDelete, r) {
test(r,
"uniform float4x4 colorXform;"
"uniform sampler2D sampler;"
"void main() {"
"float4 tmpColor;"
"sk_FragColor = half4(1.0) * (tmpColor = sample(sampler, float2(1)) , "
"half4(colorXform != float4x4(1.0) ? float4(clamp((float4x4(colorXform) * "
"float4(tmpColor.xyz, 1.0)).xyz, "
"0.0, tmpColor.w), tmpColor.w) : tmpColor));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"uniform mat4 colorXform;\n"
"uniform sampler2D sampler;\n"
"void main() {\n"
" vec4 tmpColor;\n"
" sk_FragColor = (tmpColor = texture(sampler, vec2(1.0)) , colorXform != mat4(1.0) ? "
"vec4(clamp((colorXform * vec4(tmpColor.xyz, 1.0)).xyz, 0.0, tmpColor.w), tmpColor.w) : "
"tmpColor);\n"
"}\n");
}
DEF_TEST(SkSLDependentInitializers, r) {
test(r,
"void main() {"
"float x = 0.5, y = x * 2;"
"sk_FragColor = half4(half(y));"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(1.0);\n"
"}\n");
}
DEF_TEST(SkSLDeadLoopVar, r) {
test(r,
"void main() {"
"for (int x = 0; x < 4; ) {"
"break;"
"}"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"void main() {\n"
" for (; true; ) {\n"
" break;\n"
" }\n"
"}\n"
);
}
DEF_TEST(SkSLGeometryShaders, r) {
test(r,
"layout(points) in;"
"layout(invocations = 2) in;"
"layout(line_strip, max_vertices = 2) out;"
"void test() {"
"sk_Position = sk_in[0].sk_Position + float4(0.5, 0, 0, sk_InvocationID);"
"EmitVertex();"
"}"
"void main() {"
"test();"
"sk_Position = sk_in[0].sk_Position + float4(-0.5, 0, 0, sk_InvocationID);"
"EmitVertex();"
"}",
*SkSL::ShaderCapsFactory::NoGSInvocationsSupport(),
"#version 400\n"
"int sk_InvocationID;\n"
"layout (points) in ;\n"
"layout (line_strip, max_vertices = 4) out ;\n"
"void _invoke() {\n"
" {\n"
" gl_Position = gl_in[0].gl_Position + vec4(0.5, 0.0, 0.0, float(sk_InvocationID));\n"
" EmitVertex();\n"
" }\n"
"\n"
" gl_Position = gl_in[0].gl_Position + vec4(-0.5, 0.0, 0.0, float(sk_InvocationID));\n"
" EmitVertex();\n"
"}\n"
"void main() {\n"
" for (sk_InvocationID = 0;sk_InvocationID < 2; sk_InvocationID++) {\n"
" _invoke();\n"
" EndPrimitive();\n"
" }\n"
"}\n",
SkSL::Program::kGeometry_Kind);
test(r,
"layout(points, invocations = 2) in;"
"layout(invocations = 3) in;"
"layout(line_strip, max_vertices = 2) out;"
"void main() {"
"sk_Position = sk_in[0].sk_Position + float4(-0.5, 0, 0, sk_InvocationID);"
"EmitVertex();"
"EndPrimitive();"
"}",
*SkSL::ShaderCapsFactory::GSInvocationsExtensionString(),
"#version 400\n"
"#extension GL_ARB_gpu_shader5 : require\n"
"layout (points, invocations = 2) in ;\n"
"layout (invocations = 3) in ;\n"
"layout (line_strip, max_vertices = 2) out ;\n"
"void main() {\n"
" gl_Position = gl_in[0].gl_Position + vec4(-0.5, 0.0, 0.0, float(gl_InvocationID));\n"
" EmitVertex();\n"
" EndPrimitive();\n"
"}\n",
SkSL::Program::kGeometry_Kind);
test(r,
"layout(points, invocations = 2) in;"
"layout(invocations = 3) in;"
"layout(line_strip, max_vertices = 2) out;"
"void main() {"
"sk_Position = sk_in[0].sk_Position + float4(-0.5, 0, 0, sk_InvocationID);"
"EmitVertex();"
"EndPrimitive();"
"}",
*SkSL::ShaderCapsFactory::GeometryShaderExtensionString(),
"#version 310es\n"
"#extension GL_EXT_geometry_shader : require\n"
"layout (points, invocations = 2) in ;\n"
"layout (invocations = 3) in ;\n"
"layout (line_strip, max_vertices = 2) out ;\n"
"void main() {\n"
" gl_Position = gl_in[0].gl_Position + vec4(-0.5, 0.0, 0.0, float(gl_InvocationID));\n"
" EmitVertex();\n"
" EndPrimitive();\n"
"}\n",
SkSL::Program::kGeometry_Kind);
}
DEF_TEST(SkSLTypePrecision, r) {
test(r,
"float f = 1;"
"half h = 2;"
"float d = 3;"
"float2 f2 = float2(1, 2);"
"half3 h3 = half3(1, 2, 3);"
"float4 d4 = float4(1, 2, 3, 4);"
"float2x2 f22 = float2x2(1, 2, 3, 4);"
"half2x4 h24 = half2x4(1, 2, 3, 4, 5, 6, 7, 8);"
"float4x2 d42 = float4x2(1, 2, 3, 4, 5, 6, 7, 8);"
"void main() {"
"sk_FragColor.r = half(f + h + d + f2.x + h3.x + d4.x + f22[0][0] + h24[0][0] + "
"d42[0][0]);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"float f = 1.0;\n"
"float h = 2.0;\n"
"float d = 3.0;\n"
"vec2 f2 = vec2(1.0, 2.0);\n"
"vec3 h3 = vec3(1.0, 2.0, 3.0);\n"
"vec4 d4 = vec4(1.0, 2.0, 3.0, 4.0);\n"
"mat2 f22 = mat2(1.0, 2.0, 3.0, 4.0);\n"
"mat2x4 h24 = mat2x4(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0);\n"
"mat4x2 d42 = mat4x2(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0);\n"
"void main() {\n"
" sk_FragColor.x = (((((((f + h) + d) + f2.x) + h3.x) + d4.x) + "
"f22[0][0]) + h24[0][0]) + d42[0][0];\n"
"}\n");
test(r,
"float f = 1;"
"half h = 2;"
"float2 f2 = float2(1, 2);"
"half3 h3 = half3(1, 2, 3);"
"float2x2 f22 = float2x2(1, 2, 3, 4);"
"half2x4 h24 = half2x4(1, 2, 3, 4, 5, 6, 7, 8);"
"void main() {"
"sk_FragColor.r = half(f + h + f2.x + h3.x + f22[0][0] + h24[0][0]);"
"}",
*SkSL::ShaderCapsFactory::UsesPrecisionModifiers(),
"#version 400\n"
"precision mediump float;\n"
"precision mediump sampler2D;\n"
"out mediump vec4 sk_FragColor;\n"
"highp float f = 1.0;\n"
"mediump float h = 2.0;\n"
"highp vec2 f2 = vec2(1.0, 2.0);\n"
"mediump vec3 h3 = vec3(1.0, 2.0, 3.0);\n"
"highp mat2 f22 = mat2(1.0, 2.0, 3.0, 4.0);\n"
"mediump mat2x4 h24 = mat2x4(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0);\n"
"void main() {\n"
" sk_FragColor.x = ((((f + h) + f2.x) + h3.x) + f22[0][0]) + h24[0][0];\n"
"}\n");
}
DEF_TEST(SkSLNumberConversions, r) {
test(r,
"short s = short(sqrt(1));"
"int i = int(sqrt(1));"
"ushort us = ushort(sqrt(1));"
"uint ui = uint(sqrt(1));"
"half h = half(sqrt(1));"
"float f = sqrt(1);"
"short s2s = s;"
"short i2s = short(i);"
"short us2s = short(us);"
"short ui2s = short(ui);"
"short h2s = short(h);"
"short f2s = short(f);"
"int s2i = s;"
"int i2i = i;"
"int us2i = int(us);"
"int ui2i = int(ui);"
"int h2i = int(h);"
"int f2i = int(f);"
"ushort s2us = ushort(s);"
"ushort i2us = ushort(i);"
"ushort us2us = us;"
"ushort ui2us = ushort(ui);"
"ushort h2us = ushort(h);"
"ushort f2us = ushort(f);"
"uint s2ui = uint(s);"
"uint i2ui = uint(i);"
"uint us2ui = us;"
"uint ui2ui = ui;"
"uint h2ui = uint(h);"
"uint f2ui = uint(f);"
"float s2f = s;"
"float i2f = i;"
"float us2f = us;"
"float ui2f = ui;"
"float h2f = h;"
"float f2f = f;"
"void main() {"
"sk_FragColor.r = half(s + i + us + half(ui) + h + f + s2s + i2s + us2s + ui2s + h2s + "
"f2s + s2i + i2i + us2i + ui2i + h2i + f2i + s2us + i2us + us2us);"
"sk_FragColor.r += half(ui2us + h2us + f2us + half(s2ui) + half(i2ui) + half(us2ui) + "
"half(ui2ui) + half(h2ui) + half(f2ui) + s2f + i2f + us2f + ui2f + "
"h2f + f2f);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"int s = int(sqrt(1.0));\n"
"int i = int(sqrt(1.0));\n"
"uint us = uint(sqrt(1.0));\n"
"uint ui = uint(sqrt(1.0));\n"
"float h = sqrt(1.0);\n"
"float f = sqrt(1.0);\n"
"int s2s = s;\n"
"int i2s = i;\n"
"int us2s = int(us);\n"
"int ui2s = int(ui);\n"
"int h2s = int(h);\n"
"int f2s = int(f);\n"
"int s2i = s;\n"
"int i2i = i;\n"
"int us2i = int(us);\n"
"int ui2i = int(ui);\n"
"int h2i = int(h);\n"
"int f2i = int(f);\n"
"uint s2us = uint(s);\n"
"uint i2us = uint(i);\n"
"uint us2us = us;\n"
"uint ui2us = ui;\n"
"uint h2us = uint(h);\n"
"uint f2us = uint(f);\n"
"uint s2ui = uint(s);\n"
"uint i2ui = uint(i);\n"
"uint us2ui = us;\n"
"uint ui2ui = ui;\n"
"uint h2ui = uint(h);\n"
"uint f2ui = uint(f);\n"
"float s2f = float(s);\n"
"float i2f = float(i);\n"
"float us2f = float(us);\n"
"float ui2f = float(ui);\n"
"float h2f = h;\n"
"float f2f = f;\n"
"void main() {\n"
" sk_FragColor.x = (((((((((((((((((float((s + i) + int(us)) + float(ui)) + h) + f) + "
"float(s2s)) + float(i2s)) + float(us2s)) + float(ui2s)) + float(h2s)) + float(f2s)) + "
"float(s2i)) + float(i2i)) + float(us2i)) + float(ui2i)) + float(h2i)) + float(f2i)) + "
"float(s2us)) + float(i2us)) + float(us2us);\n"
" sk_FragColor.x += (((((((((((float((ui2us + h2us) + f2us) + float(s2ui)) + "
"float(i2ui)) + float(us2ui)) + float(ui2ui)) + float(h2ui)) + float(f2ui)) + s2f) + "
"i2f) + us2f) + ui2f) + h2f) + f2f;\n"
"}\n");
}
DEF_TEST(SkSLForceHighPrecision, r) {
test(r,
"void main() {\n half x = half(sqrt(1));\n half4 y = half4(x);\n sk_FragColor = y;\n }",
*SkSL::ShaderCapsFactory::UsesPrecisionModifiers(),
"#version 400\n"
"precision mediump float;\n"
"precision mediump sampler2D;\n"
"out mediump vec4 sk_FragColor;\n"
"void main() {\n"
" mediump float x = sqrt(1.0);\n"
" mediump vec4 y = vec4(x);\n"
" sk_FragColor = y;\n"
"}\n");
SkSL::Program::Settings settings;
settings.fForceHighPrecision = true;
sk_sp<GrShaderCaps> caps = SkSL::ShaderCapsFactory::UsesPrecisionModifiers();
settings.fCaps = caps.get();
SkSL::Program::Inputs inputs;
test(r,
"void main() { half x = half(sqrt(1)); half4 y = half4(x); sk_FragColor = y; }",
settings,
"#version 400\n"
"precision mediump float;\n"
"precision mediump sampler2D;\n"
"out mediump vec4 sk_FragColor;\n"
"void main() {\n"
" highp float x = sqrt(1.0);\n"
" highp vec4 y = vec4(x);\n"
" sk_FragColor = y;\n"
"}\n",
&inputs);
}
DEF_TEST(SkSLNormalization, r) {
test(r,
"uniform float4 sk_RTAdjust; void main() { sk_Position = half4(1); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"uniform vec4 sk_RTAdjust;\n"
"void main() {\n"
" gl_Position = vec4(1.0);\n"
" gl_Position = vec4(gl_Position.xy * sk_RTAdjust.xz + gl_Position.ww * "
"sk_RTAdjust.yw, 0.0, gl_Position.w);\n"
"}\n",
SkSL::Program::kVertex_Kind);
test(r,
"uniform float4 sk_RTAdjust;"
"layout(points) in;"
"layout(invocations = 2) in;"
"layout(line_strip, max_vertices = 2) out;"
"void main() {"
"sk_Position = sk_in[0].sk_Position + float4(-0.5, 0, 0, sk_InvocationID);"
"EmitVertex();"
"sk_Position = sk_in[0].sk_Position + float4(0.5, 0, 0, sk_InvocationID);"
"EmitVertex();"
"EndPrimitive();"
"}",
*SkSL::ShaderCapsFactory::GeometryShaderSupport(),
"#version 400\n"
"uniform vec4 sk_RTAdjust;\n"
"layout (points) in ;\n"
"layout (invocations = 2) in ;\n"
"layout (line_strip, max_vertices = 2) out ;\n"
"void main() {\n"
" gl_Position = gl_in[0].gl_Position + vec4(-0.5, 0.0, 0.0, float(gl_InvocationID));\n"
" {\n"
" gl_Position = vec4(gl_Position.xy * sk_RTAdjust.xz + gl_Position.ww * "
"sk_RTAdjust.yw, 0.0, gl_Position.w);\n"
" EmitVertex();\n"
" }\n"
" gl_Position = gl_in[0].gl_Position + vec4(0.5, 0.0, 0.0, float(gl_InvocationID));\n"
" {\n"
" gl_Position = vec4(gl_Position.xy * sk_RTAdjust.xz + gl_Position.ww * "
"sk_RTAdjust.yw, 0.0, gl_Position.w);\n"
" EmitVertex();\n"
" }\n"
" EndPrimitive();\n"
"}\n",
SkSL::Program::kGeometry_Kind);
}
DEF_TEST(SkSLTernaryLValue, r) {
test(r,
"void main() { int r, g; (true ? r : g) = 1; (false ? r : g) = 0; "
"sk_FragColor = half4(r, g, 1, 1); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(1.0, 0.0, 1.0, 1.0);\n"
"}\n");
test(r,
"void main() { half r, g; (true ? r : g) = half(sqrt(1)); (false ? r : g) = half(sqrt(0));"
"sk_FragColor = half4(r, g, 1, 1); }",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float r, g;\n"
" r = sqrt(1.0);\n"
" g = sqrt(0.0);\n"
" sk_FragColor = vec4(r, g, 1.0, 1.0);\n"
"}\n");
test(r,
"void main() {"
"half r, g;"
"(sqrt(1) > 0 ? r : g) = half(sqrt(1));"
"(sqrt(0) > 0 ? r : g) = half(sqrt(0));"
"sk_FragColor = half4(r, g, 1, 1);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float r, g;\n"
" sqrt(1.0) > 0.0 ? r : g = sqrt(1.0);\n"
" sqrt(0.0) > 0.0 ? r : g = sqrt(0.0);\n"
" sk_FragColor = vec4(r, g, 1.0, 1.0);\n"
"}\n");
}
DEF_TEST(SkSLIncompleteShortIntPrecision, r) {
test(r,
"uniform sampler2D tex;"
"in float2 texcoord;"
"in short2 offset;"
"void main() {"
" short scalar = offset.y;"
" sk_FragColor = sample(tex, texcoord + float2(offset * scalar));"
"}",
*SkSL::ShaderCapsFactory::UsesPrecisionModifiers(),
"#version 400\n"
"precision mediump float;\n"
"precision mediump sampler2D;\n"
"out mediump vec4 sk_FragColor;\n"
"uniform sampler2D tex;\n"
"in highp vec2 texcoord;\n"
"in mediump ivec2 offset;\n"
"void main() {\n"
" mediump int scalar = offset.y;\n"
" sk_FragColor = texture(tex, texcoord + vec2(offset * scalar));\n"
"}\n",
SkSL::Program::kFragment_Kind);
test(r,
"uniform sampler2D tex;"
"in float2 texcoord;"
"in short2 offset;"
"void main() {"
" short scalar = offset.y;"
" sk_FragColor = sample(tex, texcoord + float2(offset * scalar));"
"}",
*SkSL::ShaderCapsFactory::IncompleteShortIntPrecision(),
"#version 310es\n"
"precision mediump float;\n"
"precision mediump sampler2D;\n"
"out mediump vec4 sk_FragColor;\n"
"uniform sampler2D tex;\n"
"in highp vec2 texcoord;\n"
"in highp ivec2 offset;\n"
"void main() {\n"
" highp int scalar = offset.y;\n"
" sk_FragColor = texture(tex, texcoord + vec2(offset * scalar));\n"
"}\n",
SkSL::Program::kFragment_Kind);
}
DEF_TEST(SkSLFrExp, r) {
test(r,
"void main() {"
" int exp;"
" float foo = frexp(0.5, exp);"
" sk_FragColor = half4(exp);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" int exp;\n"
" float foo = frexp(0.5, exp);\n"
" sk_FragColor = vec4(float(exp));\n"
"}\n");
}
DEF_TEST(SkSLWorkaroundAddAndTrueToLoopCondition, r) {
test(r,
"void main() {"
" int c = 0;"
" for (int i = 0; i < 4 || c < 10; ++i) {"
" c += 1;"
" }"
"}",
*SkSL::ShaderCapsFactory::AddAndTrueToLoopCondition(),
"#version 400\n"
"void main() {\n"
" int c = 0;\n"
" for (int i = 0;(i < 4 || c < 10) && true; ++i) {\n"
" c += 1;\n"
" }\n"
"}\n",
SkSL::Program::kFragment_Kind
);
}
DEF_TEST(SkSLWorkaroundUnfoldShortCircuitAsTernary, r) {
test(r,
"uniform bool x;"
"uniform bool y;"
"uniform int i;"
"uniform int j;"
"void main() {"
" bool andXY = x && y;"
" bool orXY = x || y;"
" bool combo = (x && y) || (x || y);"
" bool prec = (i + j == 3) && y;"
" while (andXY && orXY && combo && prec) {"
" sk_FragColor = half4(0);"
" break;"
" }"
"}",
*SkSL::ShaderCapsFactory::UnfoldShortCircuitAsTernary(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"uniform bool x;\n"
"uniform bool y;\n"
"uniform int i;\n"
"uniform int j;\n"
"void main() {\n"
" bool andXY = x ? y : false;\n"
" bool orXY = x ? true : y;\n"
" bool combo = (x ? y : false) ? true : (x ? true : y);\n"
" bool prec = i + j == 3 ? y : false;\n"
" while (((andXY ? orXY : false) ? combo : false) ? prec : false) {\n"
" sk_FragColor = vec4(0.0);\n"
" break;\n"
" }\n"
"}\n",
SkSL::Program::kFragment_Kind
);
}
DEF_TEST(SkSLWorkaroundEmulateAbsIntFunction, r) {
test(r,
"uniform int i;"
"uniform float f;"
"void main() {"
" float output = abs(f) + abs(i);"
" sk_FragColor = half4(half(output));"
"}",
*SkSL::ShaderCapsFactory::EmulateAbsIntFunction(),
"#version 400\n"
"int _absemulation(int x) {\n"
" return x * sign(x);\n"
"}\n"
"out vec4 sk_FragColor;\n"
"uniform int i;\n"
"uniform float f;\n"
"void main() {\n"
" float output = abs(f) + float(_absemulation(i));\n"
" sk_FragColor = vec4(output);\n"
"}\n",
SkSL::Program::kFragment_Kind
);
}
DEF_TEST(SkSLWorkaroundRewriteDoWhileLoops, r) {
test(r,
"void main() {"
" int i = 0;"
" do {"
" ++i;"
" do {"
" i++;"
" } while (true);"
" } while (i < 10);"
" sk_FragColor = half4(i);"
"}",
*SkSL::ShaderCapsFactory::RewriteDoWhileLoops(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" int i = 0;\n"
" bool _tmpLoopSeenOnce0 = false;\n"
" while (true) {\n"
" if (_tmpLoopSeenOnce0) {\n"
" if (!(i < 10)) {\n"
" break;\n"
" }\n"
" }\n"
" _tmpLoopSeenOnce0 = true;\n"
" {\n"
" ++i;\n"
" bool _tmpLoopSeenOnce1 = false;\n"
" while (true) {\n"
" if (_tmpLoopSeenOnce1) {\n"
" if (!true) {\n"
" break;\n"
" }\n"
" }\n"
" _tmpLoopSeenOnce1 = true;\n"
" {\n"
" i++;\n"
" }\n"
" }\n"
" }\n"
" }\n"
" sk_FragColor = vec4(float(i));\n"
"}\n",
SkSL::Program::kFragment_Kind
);
}
DEF_TEST(SkSLWorkaroundRemovePowWithConstantExponent, r) {
test(r,
"uniform float x;"
"uniform float y;"
"void main() {"
" float z = pow(x + 1.0, y + 2.0);"
" sk_FragColor = half4(half(z));"
"}",
*SkSL::ShaderCapsFactory::RemovePowWithConstantExponent(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"uniform float x;\n"
"uniform float y;\n"
"void main() {\n"
" float z = exp2((y + 2.0) * log2(x + 1.0));\n"
" sk_FragColor = vec4(z);\n"
"}\n",
SkSL::Program::kFragment_Kind
);
}
DEF_TEST(SkSLSwizzleLTRB, r) {
test(r,
"void main() {"
" sk_FragColor = sk_FragColor.BRTL;"
"}",
*SkSL::ShaderCapsFactory::RemovePowWithConstantExponent(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = sk_FragColor.wzyx;\n"
"}\n",
SkSL::Program::kFragment_Kind
);
}
DEF_TEST(SkSLSwizzleConstants, r) {
test(r,
"void main() {"
" half4 v = half4(half(sqrt(1)));"
" sk_FragColor = half4(v.x, 1, 1, 1);"
" sk_FragColor = half4(v.xy, 1, 1);"
" sk_FragColor = half4(v.x1, 1, 1);"
" sk_FragColor = half4(v.0y, 1, 1);"
" sk_FragColor = half4(v.xyz, 1);"
" sk_FragColor = half4(v.xy1, 1);"
" sk_FragColor = half4(v.x0z, 1);"
" sk_FragColor = half4(v.x10, 1);"
" sk_FragColor = half4(v.1yz, 1);"
" sk_FragColor = half4(v.0y1, 1);"
" sk_FragColor = half4(v.11z, 1);"
" sk_FragColor = v.xyzw;"
" sk_FragColor = v.xyz1;"
" sk_FragColor = v.xy0w;"
" sk_FragColor = v.xy10;"
" sk_FragColor = v.x1zw;"
" sk_FragColor = v.x0z1;"
" sk_FragColor = v.x11w;"
" sk_FragColor = v.x101;"
" sk_FragColor = v.1yzw;"
" sk_FragColor = v.0yz1;"
" sk_FragColor = v.0y1w;"
" sk_FragColor = v.1y11;"
" sk_FragColor = v.00zw;"
" sk_FragColor = v.00z1;"
" sk_FragColor = v.011w;"
"}",
*SkSL::ShaderCapsFactory::RemovePowWithConstantExponent(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" vec4 v = vec4(sqrt(1.0));\n"
" sk_FragColor = vec4(v.x, 1.0, 1.0, 1.0);\n"
" sk_FragColor = vec4(v.xy, 1.0, 1.0);\n"
" sk_FragColor = vec4(vec2(v.x, 1), 1.0, 1.0);\n"
" sk_FragColor = vec4(vec2(0, v.y), 1.0, 1.0);\n"
" sk_FragColor = vec4(v.xyz, 1.0);\n"
" sk_FragColor = vec4(vec3(v.xy, 1), 1.0);\n"
" sk_FragColor = vec4(vec3(v.xz, 0).xzy, 1.0);\n"
" sk_FragColor = vec4(vec3(v.x, 1, 0), 1.0);\n"
" sk_FragColor = vec4(vec3(1, v.yz), 1.0);\n"
" sk_FragColor = vec4(vec3(v.y, 0, 1).yxz, 1.0);\n"
" sk_FragColor = vec4(vec3(1, 1, v.z), 1.0);\n"
" sk_FragColor = v;\n"
" sk_FragColor = vec4(v.xyz, 1);\n"
" sk_FragColor = vec4(v.xyw, 0).xywz;\n"
" sk_FragColor = vec4(v.xy, 1, 0);\n"
" sk_FragColor = vec4(v.xzw, 1).xwyz;\n"
" sk_FragColor = vec4(v.xz, 0, 1).xzyw;\n"
" sk_FragColor = vec4(v.xw, 1, 1).xzwy;\n"
" sk_FragColor = vec4(v.x, 1, 0, 1);\n"
" sk_FragColor = vec4(1, v.yzw);\n"
" sk_FragColor = vec4(v.yz, 0, 1).zxyw;\n"
" sk_FragColor = vec4(v.yw, 0, 1).zxwy;\n"
" sk_FragColor = vec4(v.y, 1, 1, 1).yxzw;\n"
" sk_FragColor = vec4(0, 0, v.zw);\n"
" sk_FragColor = vec4(v.z, 0, 0, 1).yzxw;\n"
" sk_FragColor = vec4(0, 1, 1, v.w);\n"
"}\n",
SkSL::Program::kFragment_Kind
);
}
DEF_TEST(SkSLSwizzleOpt, r) {
test(r,
"void main() {"
" half v = half(sqrt(1));"
" sk_FragColor = half4(v).rgba;"
" sk_FragColor = half4(v).rgb0.abgr;"
" sk_FragColor = half4(v).rgba.00ra;"
" sk_FragColor = half4(v).rgba.rrra.00ra.11ab;"
" sk_FragColor = half4(v).abga.gb11;"
" sk_FragColor = half4(v).abgr.abgr;"
" sk_FragColor = half4(half4(v).rrrr.bb, 1, 1);"
" sk_FragColor = half4(half4(v).ba.grgr);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float v = sqrt(1.0);\n"
" sk_FragColor = vec4(v);\n"
" sk_FragColor = vec4(0, vec4(v).zyx);\n"
" sk_FragColor = vec4(0, 0, vec4(v).xw);\n"
" sk_FragColor = vec4(1, 1, vec4(v).wx);\n"
" sk_FragColor = vec4(vec4(v).zy, 1, 1);\n"
" sk_FragColor = vec4(v);\n"
" sk_FragColor = vec4(vec4(v).xx, 1.0, 1.0);\n"
" sk_FragColor = vec4(v).wzwz;\n"
"}\n",
SkSL::Program::kFragment_Kind
);
}
DEF_TEST(SkSLSwizzleScalar, r) {
test(r,
"void main() {"
" half x = half(sqrt(4));"
" sk_FragColor = x.xx01;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float x = sqrt(4.0);\n"
" sk_FragColor = vec4(vec2(x), 0, 1);\n"
"}\n");
test(r,
"void main() {"
" sk_FragColor = half(sqrt(4)).xx01;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(vec2(sqrt(4.0)), 0, 1);\n"
"}\n");
test(r,
"void main() {"
" sk_FragColor = half(sqrt(4)).0x01;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(0, sqrt(4.0), 0, 1);\n"
"}\n");
test(r,
"void main() {"
" sk_FragColor = half(sqrt(4)).0x0x;"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" float _tmpSwizzle0 = sqrt(4.0);\n"
" sk_FragColor = vec4(0, _tmpSwizzle0, 0, _tmpSwizzle0);\n"
"\n"
"}\n");
}
DEF_TEST(SkSLStackingVectorCasts, r) {
test(r,
"void main() {"
" if (half4(0, 0, 1, 1) == half4(int4(0, 0, 1, 1)))"
" sk_FragColor = half4(0, 1, 0, 1);"
" else"
" sk_FragColor = half4(1, 0, 0, 1);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
"}\n");
test(r,
"void main() {"
" if (half4(int4(0, 0, 1, 1)) == half4(int4(half4(0, 0, 1, 1))))"
" sk_FragColor = half4(0, 1, 0, 1);"
" else"
" sk_FragColor = half4(1, 0, 0, 1);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
"}\n");
}
DEF_TEST(SkSLCastsRoundTowardZero, r) {
test(r,
"void main() {"
" if (half4(int4(0, 0, 1, 2)) == half4(int4(half4(0.01, 0.99, 1.49, 2.75))))"
" sk_FragColor = half4(0, 1, 0, 1);"
" else"
" sk_FragColor = half4(1, 0, 0, 1);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
"}\n");
test(r,
"void main() {"
" if (half4(int4(0, 0, -1, -2)) == half4(int4(half4(-0.01, -0.99, -1.49, -2.75))))"
" sk_FragColor = half4(0, 1, 0, 1);"
" else"
" sk_FragColor = half4(1, 0, 0, 1);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
"}\n");
}
DEF_TEST(SkSLNegatedVectorLiteral, r) {
test(r,
"void main() {"
" if (half4(1) == half4(-half2(-1), half2(1)))"
" sk_FragColor = half4(0, 1, 0, 1);"
" else"
" sk_FragColor = half4(1, 0, 0, 1);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"out vec4 sk_FragColor;\n"
"void main() {\n"
" sk_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
"}\n");
}
DEF_TEST(SkSLDiscard, r) {
test(r,
"void main() {"
"half x;"
" @switch (1) {"
" case 0: x = 0; break;"
" default: x = 1; discard;"
" }"
" sk_FragColor = half4(x);"
"}",
*SkSL::ShaderCapsFactory::Default(),
"#version 400\n"
"void main() {\n"
" float x;\n"
" {\n"
" x = 1.0;\n"
" discard;\n"
" }\n"
"}\n");
}
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