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[D3D12] Non-adaptive quad tessellation

This commit is contained in:
Triang3l 2020-04-19 23:11:52 +03:00
parent e6068e0d64
commit f83809f7a1
3 changed files with 48 additions and 0 deletions
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1
src/xenia/gpu/d3d12/d3d12_command_processor.cc
View File

@ -1358,6 +1358,7 @@ bool D3D12CommandProcessor::IssueDraw(PrimitiveType primitive_type,
case PrimitiveType::kTrianglePatch:
primitive_topology = D3D_PRIMITIVE_TOPOLOGY_3_CONTROL_POINT_PATCHLIST;
break;
case PrimitiveType::kQuadList:
case PrimitiveType::kQuadPatch:
primitive_topology = D3D_PRIMITIVE_TOPOLOGY_4_CONTROL_POINT_PATCHLIST;
break;

13
src/xenia/gpu/d3d12/pipeline_cache.cc
View File

@ -769,6 +769,19 @@ Shader::HostVertexShaderType PipelineCache::GetHostVertexShaderTypeIfValid()
break;
}
break;
case PrimitiveType::kQuadList:
switch (tessellation_mode) {
// Also supported by quad strips according to:
// https://www.khronos.org/registry/OpenGL/extensions/AMD/AMD_vertex_shader_tessellator.txt
// Would need to convert those to quad lists, but haven't seen any games
// using tessellated strips so far.
case xenos::TessellationMode::kContinuous:
// - Defender - retro screen and beams in the main menu - kQuadList.
return Shader::HostVertexShaderType::kQuadDomainConstant;
default:
break;
}
break;
case PrimitiveType::kTrianglePatch:
if (tessellation_mode == xenos::TessellationMode::kAdaptive) {
// - Banjo-Kazooie: Nuts & Bolts - water.

34
src/xenia/gpu/dxbc_shader_translator.cc
View File

@ -530,6 +530,40 @@ void DxbcShaderTranslator::StartVertexOrDomainShader() {
}
break;
case Shader::HostVertexShaderType::kQuadDomainConstant:
assert_true(register_count() >= 2);
if (register_count() >= 1) {
// Copy the domain location to r0.xy.
DxbcOpMov(uses_register_dynamic_addressing() ? DxbcDest::X(0, 0, 0b0011)
: DxbcDest::R(0, 0b0011),
DxbcSrc::VDomain());
// Control point indices according to the shader from the main menu of
// Defender, which starts from `cndeq r2, c255.xxxy, r1.xyzz, r0.zzzz`,
// where c255.x is 0, and c255.y is 1.
// r0.z for (1 - r0.x) * (1 - r0.y)
// r1.x for r0.x * (1 - r0.y)
// r1.y for r0.x * r0.y
// r1.z for (1 - r0.x) * r0.y
DxbcOpMov(
uses_register_dynamic_addressing() ? DxbcDest::X(0, 0, 0b0100)
: DxbcDest::R(0, 0b0100),
DxbcSrc::VICP(0, uint32_t(InOutRegister::kDSInControlPointIndex),
DxbcSrc::kXXXX));
if (register_count() >= 2) {
DxbcDest r1_dest(uses_register_dynamic_addressing()
? DxbcDest::X(0, 1)
: DxbcDest::R(1));
for (uint32_t i = 0; i < 3; ++i) {
DxbcOpMov(
r1_dest.Mask(1 << i),
DxbcSrc::VICP(1 + i,
uint32_t(InOutRegister::kDSInControlPointIndex),
DxbcSrc::kXXXX));
}
}
}
break;
case Shader::HostVertexShaderType::kQuadDomainAdaptive:
assert_true(register_count() >= 2);
if (register_count() >= 1) {