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[D3D12] Fix cubemap coordinates

This commit is contained in:
Triang3l 2018-08-13 00:19:29 +03:00
parent 01a3bc32f7
commit 24c3bac898
1 changed files with 11 additions and 9 deletions
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20
src/xenia/gpu/hlsl_shader_translator.cc
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@ -111,7 +111,7 @@ std::vector<uint8_t> HlslShaderTranslator::CompleteTranslation() {
// Face is 4 for positive Z, 5 for negative Z
// From T and S, abs(2 * MA) needs to be subtracted also.
//
// The undo function accepts (s, t, face index).
// Undo accepts (s, t, face index).
if (cube_used_) {
source.Append(
"float4 XeCubeTo2D(float3 xe_cube_3d) {\n"
@ -133,28 +133,29 @@ std::vector<uint8_t> HlslShaderTranslator::CompleteTranslation() {
" xe_cube_2d.y *= sign(xe_cube_3d.z);\n"
" xe_cube_2d.w = 4.0;\n"
" }\n"
" xe_cube_2d.w += saturate(-sign(xe_cube_2d.y));\n"
" xe_cube_2d.z *= 2.0;\n"
" xe_cube_2d.xy -= abs(xe_cube_2d.zz);\n"
" xe_cube_2d.w += saturate(-sign(xe_cube_2d.z));\n"
" return xe_cube_2d;\n"
"}\n"
"\n"
"float3 XeCubeTo3D(float3 xe_cube_2d) {\n"
" xe_cube_2d.xy = (xe_cube_2d.xy * 2.0) + 1.0;\n"
" xe_cube_2d.xy = xe_cube_2d.xy * 2.0 - 1.0;\n"
" float3 xe_cube_3d;\n"
" uint xe_cube_face_index = uint(xe_cube_2d.z);\n"
" float xe_cube_ma_sign =\n"
" -(float(xe_cube_face_index & 1u) * 2.0 - 1.0);\n"
" uint xe_cube_ma_index = xe_cube_face_index >> 1u;\n"
" xe_cube_2d.z =\n"
" -(float(xe_cube_face_index & 1u) * 2.0 - 1.0);\n"
" if (xe_cube_ma_index == 0u) {\n"
" xe_cube_3d.x = xe_cube_2d.z;\n"
" xe_cube_3d.yz = -xe_cube_2d.yx;\n"
" xe_cube_3d.xz *= xe_cube_ma_sign;\n"
" xe_cube_3d.z *= xe_cube_2d.z;\n"
" } else if (xe_cube_ma_index == 1u) {\n"
" xe_cube_3d = xe_cube_2d.xzy;\n"
" xe_cube_3d.yz *= xe_cube_ma_sign;\n"
" xe_cube_3d.z *= xe_cube_2d.z;\n"
" } else {\n"
" xe_cube_3d.xz = xe_cube_2d.xz * xe_cube_ma_sign;\n"
" xe_cube_3d.xz = xe_cube_2d.xz;\n"
" xe_cube_3d.x *= xe_cube_2d.z;\n"
" xe_cube_3d.y = -xe_cube_2d.y;\n"
" }\n"
" return xe_cube_3d;\n"
@ -1512,7 +1513,8 @@ void HlslShaderTranslator::ProcessVectorAluInstruction(
"xe_pv = (dot(xe_src0.xy, xe_src1.xy) + xe_src2.x).xxxx;\n");
break;
case AluVectorOpcode::kCube:
EmitSourceDepth("xe_pv = XeCubeTo2D(xe_src0.xyz);\n");
// The operand index and the swizzle are correct!
EmitSourceDepth("xe_pv = XeCubeTo2D(xe_src1.yxz);\n");
cube_used_ = true;
break;
case AluVectorOpcode::kMax4: