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[Fix, Test] (BackendLoader, DirectVulkan, ShaderTranspiler): report GL_MAX_CLIP_DISTANCES from the backend's real clip-distance capability

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swung0x48
2026-08-20 15:25:29 -04:00
parent 9bde0e500f
commit 4fc3531d0d
10 changed files with 194 additions and 7 deletions
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MobileGL/MG_Util/ShaderTranspiler/ShaderCompiler.cpp
+8 -1
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@@ -82,7 +82,6 @@ namespace MobileGL {
Resources.maxFragmentInputVectors = 15;
Resources.minProgramTexelOffset = -8;
Resources.maxProgramTexelOffset = 7;
Resources.maxClipDistances = 8;
Resources.maxComputeUniformComponents = MAX_COMPUTE_UNIFORM_COMPONENTS;
Resources.maxComputeTextureImageUnits = 16;
Resources.maxComputeImageUniforms = 8;
@@ -173,6 +172,14 @@ namespace MobileGL {
Resources.maxComputeImageUniforms = dynamicParameters.MaxComputeImageUniforms;
Resources.maxCombinedImageUniforms = dynamicParameters.MaxCombinedImageUniforms;
Resources.maxComputeTextureImageUnits = dynamicParameters.MaxComputeTextureImageUnits;
// Load-bearing, not cosmetic. glslang rejects gl_ClipDistance[i] for
// i >= maxClipDistances (ParseHelper.cpp) and expands gl_MaxClipDistances from the
// same number, so tracking the backend limit is what turns "the program links,
// the backend's shader compile fails somewhere the frontend never surfaces, and
// the draw renders nothing" into an honest glCompileShader error with a log. It is
// also what makes glGetIntegerv(GL_MAX_CLIP_DISTANCES) and gl_MaxClipDistances
// agree, which KHR-GLxx.clip_distance.coverage compares directly.
Resources.maxClipDistances = dynamicParameters.MaxClipDistances;
// The compute work-group limits are the env's, not the backend parameters': they
// are the only ones that come from a REAL indexed driver query, which