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recompiler: fixed fragment shader built-in attribute access (#1676)

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* recompiler: fixed fragment shader built-in attribute access

* handle en/addr separately

* handle other registers as well
This commit is contained in:
Vladislav Mikhalin 2024-12-07 02:20:09 +03:00 • committed by GitHub
parent e1ecfb8dd1
commit 8eacb88a86
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GPG key ID: B5690EEEBB952194
4 changed files with 101 additions and 9 deletions
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75
src/shader_recompiler/frontend/translate/translate.cpp
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@ -53,15 +53,74 @@ void Translator::EmitPrologue() {
}
break;
case Stage::Fragment:
// https://github.com/chaotic-cx/mesa-mirror/blob/72326e15/src/amd/vulkan/radv_shader_args.c#L258
// The first two VGPRs are used for i/j barycentric coordinates. In the vast majority of
// cases it will be only those two, but if shader is using both e.g linear and perspective
// inputs it can be more For now assume that this isn't the case.
dst_vreg = IR::VectorReg::V2;
for (u32 i = 0; i < 4; i++) {
ir.SetVectorReg(dst_vreg++, ir.GetAttribute(IR::Attribute::FragCoord, i));
dst_vreg = IR::VectorReg::V0;
if (runtime_info.fs_info.addr_flags.persp_sample_ena) {
++dst_vreg; // I
++dst_vreg; // J
}
if (runtime_info.fs_info.addr_flags.persp_center_ena) {
++dst_vreg; // I
++dst_vreg; // J
}
if (runtime_info.fs_info.addr_flags.persp_centroid_ena) {
++dst_vreg; // I
++dst_vreg; // J
}
if (runtime_info.fs_info.addr_flags.persp_pull_model_ena) {
++dst_vreg; // I/W
++dst_vreg; // J/W
++dst_vreg; // 1/W
}
if (runtime_info.fs_info.addr_flags.linear_sample_ena) {
++dst_vreg; // I
++dst_vreg; // J
}
if (runtime_info.fs_info.addr_flags.linear_center_ena) {
++dst_vreg; // I
++dst_vreg; // J
}
if (runtime_info.fs_info.addr_flags.linear_centroid_ena) {
++dst_vreg; // I
++dst_vreg; // J
}
if (runtime_info.fs_info.addr_flags.line_stipple_tex_ena) {
++dst_vreg;
}
if (runtime_info.fs_info.addr_flags.pos_x_float_ena) {
if (runtime_info.fs_info.en_flags.pos_x_float_ena) {
ir.SetVectorReg(dst_vreg++, ir.GetAttribute(IR::Attribute::FragCoord, 0));
} else {
ir.SetVectorReg(dst_vreg++, ir.Imm32(0.0f));
}
}
if (runtime_info.fs_info.addr_flags.pos_y_float_ena) {
if (runtime_info.fs_info.en_flags.pos_y_float_ena) {
ir.SetVectorReg(dst_vreg++, ir.GetAttribute(IR::Attribute::FragCoord, 1));
} else {
ir.SetVectorReg(dst_vreg++, ir.Imm32(0.0f));
}
}
if (runtime_info.fs_info.addr_flags.pos_z_float_ena) {
if (runtime_info.fs_info.en_flags.pos_z_float_ena) {
ir.SetVectorReg(dst_vreg++, ir.GetAttribute(IR::Attribute::FragCoord, 2));
} else {
ir.SetVectorReg(dst_vreg++, ir.Imm32(0.0f));
}
}
if (runtime_info.fs_info.addr_flags.pos_w_float_ena) {
if (runtime_info.fs_info.en_flags.pos_w_float_ena) {
ir.SetVectorReg(dst_vreg++, ir.GetAttribute(IR::Attribute::FragCoord, 3));
} else {
ir.SetVectorReg(dst_vreg++, ir.Imm32(0.0f));
}
}
if (runtime_info.fs_info.addr_flags.front_face_ena) {
if (runtime_info.fs_info.en_flags.front_face_ena) {
ir.SetVectorReg(dst_vreg++, ir.GetAttributeU32(IR::Attribute::IsFrontFace));
} else {
ir.SetVectorReg(dst_vreg++, ir.Imm32(0));
}
}
ir.SetVectorReg(dst_vreg++, ir.GetAttributeU32(IR::Attribute::IsFrontFace));
break;
case Stage::Compute:
ir.SetVectorReg(dst_vreg++, ir.GetAttributeU32(IR::Attribute::LocalInvocationId, 0));