AuroraMiddleware/SPIRV-Cross
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Fix textureGrad compilation for legacy targets

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textureGrad isn't part of core GL2 or GLES2. In desktop GL, it's
provided by GL_ARB_shader_texture_lod and is called texture2DGradARB; in
ES, it's provided by GL_EXT_shader_texture_lod and is called
texture2DGradEXT.

This change rewrites textureGrad similarly to textureProj as per above.
This commit is contained in:
Arseny Kapoulkine 2018-05-23 14:05:38 -07:00
parent c74dc4578a
commit 91fd41816f
1 changed files with 2 additions and 2 deletions
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4
spirv_glsl.cpp
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@ -3452,7 +3452,7 @@ string CompilerGLSL::legacy_tex_op(const std::string &op, const SPIRType &imgtyp
bool use_explicit_lod = check_explicit_lod_allowed(lod);
if (op == "textureLod" || op == "textureProjLod")
if (op == "textureLod" || op == "textureProjLod" || op == "textureGrad")
{
if (is_legacy_es())
{
@ -3475,7 +3475,7 @@ string CompilerGLSL::legacy_tex_op(const std::string &op, const SPIRType &imgtyp
else if (op == "textureProj")
return join("texture", type, "Proj");
else if (op == "textureGrad")
return join("texture", type, "Grad");
return join("texture", type, is_legacy_es() ? "GradEXT" : is_legacy_desktop() ? "GradARB" : "Grad");
else if (op == "textureProjLod")
{
if (use_explicit_lod)