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GLSL: Support NV barycentrics.

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This commit is contained in:
Hans-Kristian Arntzen 2019-06-13 11:33:19 +02:00
parent 05ea055096
commit 707312b83a
4 changed files with 77 additions and 0 deletions
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19
reference/opt/shaders/frag/barycentric-nv.frag Normal file
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@ -0,0 +1,19 @@
#version 450
#extension GL_NV_fragment_shader_barycentric : require
layout(binding = 0, std430) readonly buffer Vertices
{
vec2 uvs[];
} _19;
layout(location = 0) out vec2 value;
void main()
{
int _23 = 3 * gl_PrimitiveID;
int _32 = _23 + 1;
int _39 = _23 + 2;
value = ((_19.uvs[_23] * gl_BaryCoordNV.x) + (_19.uvs[_32] * gl_BaryCoordNV.y)) + (_19.uvs[_39] * gl_BaryCoordNV.z);
value += (((_19.uvs[_23] * gl_BaryCoordNoPerspNV.x) + (_19.uvs[_32] * gl_BaryCoordNoPerspNV.y)) + (_19.uvs[_39] * gl_BaryCoordNoPerspNV.z));
}

20
reference/shaders/frag/barycentric-nv.frag Normal file
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#version 450
#extension GL_NV_fragment_shader_barycentric : require
layout(binding = 0, std430) readonly buffer Vertices
{
vec2 uvs[];
} _19;
layout(location = 0) out vec2 value;
void main()
{
int prim = gl_PrimitiveID;
vec2 uv0 = _19.uvs[(3 * prim) + 0];
vec2 uv1 = _19.uvs[(3 * prim) + 1];
vec2 uv2 = _19.uvs[(3 * prim) + 2];
value = ((uv0 * gl_BaryCoordNV.x) + (uv1 * gl_BaryCoordNV.y)) + (uv2 * gl_BaryCoordNV.z);
value += (((uv0 * gl_BaryCoordNoPerspNV.x) + (uv1 * gl_BaryCoordNoPerspNV.y)) + (uv2 * gl_BaryCoordNoPerspNV.z));
}

18
shaders/frag/barycentric-nv.frag Normal file
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#version 450
#extension GL_NV_fragment_shader_barycentric : require
layout(location = 0) out vec2 value;
layout(set = 0, binding = 0) readonly buffer Vertices
{
vec2 uvs[];
};
void main () {
int prim = gl_PrimitiveID;
vec2 uv0 = uvs[3 * prim + 0];
vec2 uv1 = uvs[3 * prim + 1];
vec2 uv2 = uvs[3 * prim + 2];
value = gl_BaryCoordNV.x * uv0 + gl_BaryCoordNV.y * uv1 + gl_BaryCoordNV.z * uv2;
value += gl_BaryCoordNoPerspNV.x * uv0 + gl_BaryCoordNoPerspNV.y * uv1 + gl_BaryCoordNoPerspNV.z * uv2;
}

20
spirv_glsl.cpp
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@ -6156,6 +6156,26 @@ string CompilerGLSL::builtin_to_glsl(BuiltIn builtin, StorageClass storage)
case BuiltInIncomingRayFlagsNV: case BuiltInIncomingRayFlagsNV:
return "gl_IncomingRayFlagsNV"; return "gl_IncomingRayFlagsNV";
case BuiltInBaryCoordNV:
{
if (options.es && options.version < 320)
SPIRV_CROSS_THROW("gl_BaryCoordNV requires ESSL 320.");
else if (!options.es && options.version < 450)
SPIRV_CROSS_THROW("gl_BaryCoordNV requires GLSL 450.");
require_extension_internal("GL_NV_fragment_shader_barycentric");
return "gl_BaryCoordNV";
}
case BuiltInBaryCoordNoPerspNV:
{
if (options.es && options.version < 320)
SPIRV_CROSS_THROW("gl_BaryCoordNoPerspNV requires ESSL 320.");
else if (!options.es && options.version < 450)
SPIRV_CROSS_THROW("gl_BaryCoordNoPerspNV requires GLSL 450.");
require_extension_internal("GL_NV_fragment_shader_barycentric");
return "gl_BaryCoordNoPerspNV";
}
case BuiltInFragStencilRefEXT: case BuiltInFragStencilRefEXT:
{ {
if (!options.es) if (!options.es)