AuroraMiddleware/SPIRV-Cross
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MSL: Simplify framebuffer fetch implementation.

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This commit is contained in:
Hans-Kristian Arntzen 2019-10-24 11:48:29 +02:00
parent 2ca725a78d
commit b433836b08
1 changed files with 9 additions and 13 deletions
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22
spirv_msl.cpp
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@ -6136,12 +6136,10 @@ void CompilerMSL::emit_texture_op(const Instruction &i)
// Use Metal's native frame-buffer fetch API for subpass inputs.
if (imgtype.image.dim == DimSubpassData)
{
SmallVector<uint32_t> inherited_expressions;
bool forward = false;
to_texture_op(i, &forward, inherited_expressions);
// Subpass inputs cannot be invalidated,
// so just forward the expression directly.
string expr = to_expression(img);
emit_op(result_type_id, id, expr, forward);
emit_op(result_type_id, id, expr, true);
return;
}
}
@ -7159,14 +7157,12 @@ string CompilerMSL::to_function_args(VariableID img, const SPIRType &imgtype, bo
break;
case DimSubpassData:
// Use Metal's native frame-buffer fetch API for subpass inputs.
if (!msl_options.is_ios() || !msl_options.ios_use_framebuffer_fetch_subpasses)
{
if (imgtype.image.ms)
tex_coords = "uint2(gl_FragCoord.xy)";
else
tex_coords = join("uint2(gl_FragCoord.xy), 0");
}
// If we're using Metal's native frame-buffer fetch API for subpass inputs,
// this path will not be hit.
if (imgtype.image.ms)
tex_coords = "uint2(gl_FragCoord.xy)";
else
tex_coords = join("uint2(gl_FragCoord.xy), 0");
break;
case Dim2D: