5f16ed4c58
MSL does not support the unary "-" operator on matrix types. Similarly the SPIR-V OpFNegate/OpSNegate operations only work on scalar and vector type. * An expression such as "-<mat>" is now transformed to "-1.0 * <mat>" when generating MSL. * The same expression now generates a component-wise negation in SPIR-V, matching what glslang outputs for GLSL. * A unary "+" is now treated as NOP for MSL, matching the SPIR-V backend. An expression such as "+<expr>" is now evaluated as "<expr>". * The shared/Negation.sksl has been moved to folding/ as much of its contents exercise constant-folding of comparison expressions. * The shared/UnaryPositiveNegative.sksl test has been extended to exercise scalar and matrix types. NOTE: The SPIR-V backend changes have caused a minor re-ordering of SSA IDs generated when writing out a prefix-expression. The affected gold files have been updated. Bug: skia:12627, skia:12992 Change-Id: Iec5cdafc591aed7e49b3b52bda42a02661380bab Reviewed-on: https://skia-review.googlesource.com/c/skia/+/513976 Auto-Submit: Arman Uguray <armansito@google.com> Reviewed-by: John Stiles <johnstiles@google.com> Commit-Queue: Arman Uguray <armansito@google.com>
24 lines
601 B
GLSL
24 lines
601 B
GLSL
|
|
out vec4 sk_FragColor;
|
|
uniform vec4 colorGreen;
|
|
uniform vec4 colorRed;
|
|
bool test_ivec_b() {
|
|
int one = 1;
|
|
const int two = 2;
|
|
bool ok = true;
|
|
ok = ok && -ivec2(-one, one + one) == -ivec2(one - two, 2);
|
|
return ok;
|
|
}
|
|
bool test_mat_b() {
|
|
bool ok = true;
|
|
return ok;
|
|
}
|
|
vec4 main() {
|
|
const float _0_one = 1.0;
|
|
float _1_two = 2.0;
|
|
bool _4_ok = true;
|
|
_4_ok = _4_ok && -vec4(_1_two) == vec4(-_1_two, vec3(-_1_two));
|
|
_4_ok = _4_ok && vec2(1.0, -2.0) == -vec2(_0_one - _1_two, _1_two);
|
|
return (_4_ok && test_ivec_b()) && test_mat_b() ? colorGreen : colorRed;
|
|
}
|