diff options
| author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2021-07-25 22:26:23 -0300 |
|---|---|---|
| committer | Fernando Sahmkow <fsahmkow27@gmail.com> | 2021-11-16 22:11:28 +0100 |
| commit | 656adee630cb1de738ed4dc6cf1cbc35af40f64f (patch) | |
| tree | 5c5ec069a136655476180ce03fc24ccd911b3871 /src/shader_recompiler/backend/spirv/emit_spirv_image.cpp | |
| parent | 01379c5e3cd1181c7c7d37a672364fbcad627fb0 (diff) | |
spirv: Implement rescaling patching
Diffstat (limited to 'src/shader_recompiler/backend/spirv/emit_spirv_image.cpp')
| -rw-r--r-- | src/shader_recompiler/backend/spirv/emit_spirv_image.cpp | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp index 2f925cc3e7..7d7c0627ec 100644 --- a/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp +++ b/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp @@ -470,8 +470,30 @@ void EmitImageWrite(EmitContext& ctx, IR::Inst* inst, const IR::Value& index, Id ctx.OpImageWrite(Image(ctx, index, info), coords, color); } -Id EmitIsTextureScaled([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] const IR::Value& index) { - return ctx.false_value; +Id EmitIsTextureScaled(EmitContext& ctx, const IR::Value& index) { + const Id push_constant_u32{ctx.TypePointer(spv::StorageClass::PushConstant, ctx.U32[1])}; + const Id member_index{ctx.Const(ctx.rescaling_textures_member_index)}; + Id bit{}; + if (index.IsImmediate()) { + // Use BitwiseAnd instead of BitfieldExtract for better codegen on Nvidia OpenGL. + // LOP32I.NZ is used to set the predicate rather than BFE+ISETP. + const u32 index_value{index.U32()}; + const Id word_index{ctx.Const(index_value / 32)}; + const Id bit_index_mask{ctx.Const(1u << (index_value % 32))}; + const Id pointer{ctx.OpAccessChain(push_constant_u32, ctx.rescaling_push_constants, + member_index, word_index)}; + const Id word{ctx.OpLoad(ctx.U32[1], pointer)}; + bit = ctx.OpBitwiseAnd(ctx.U32[1], word, bit_index_mask); + } else { + const Id index_value{ctx.Def(index)}; + const Id word_index{ctx.OpShiftRightArithmetic(ctx.U32[1], index_value, ctx.Const(5u))}; + const Id pointer{ctx.OpAccessChain(push_constant_u32, ctx.rescaling_push_constants, + member_index, word_index)}; + const Id word{ctx.OpLoad(ctx.U32[1], pointer)}; + const Id bit_index{ctx.OpBitwiseAnd(ctx.U32[1], index_value, ctx.Const(31u))}; + bit = ctx.OpBitFieldUExtract(ctx.U32[1], index_value, bit_index, ctx.Const(1u)); + } + return ctx.OpINotEqual(ctx.U1, bit, ctx.u32_zero_value); } } // namespace Shader::Backend::SPIRV |