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spv_shader_gen: Add clipping plane support

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This commit is contained in:
Wunkolo 2024-03-03 11:19:59 -08:00
parent edc9708e64
commit 77eb142304
2 changed files with 101 additions and 9 deletions
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102
src/video_core/shader/generator/spv_shader_gen.cpp
View File

@ -49,11 +49,24 @@ void VertexModule::DefineEntryPoint() {
const Id main_func{OpFunction(TypeVoid(), spv::FunctionControlMask::MaskNone, main_type)};
const Id interface_ids[] = {
ids.vert_in_position_id, ids.vert_in_color_id, ids.vert_in_texcoord0_id,
ids.vert_in_texcoord1_id, ids.vert_in_texcoord2_id, ids.vert_in_texcoord0_w_id,
ids.vert_in_normquat_id, ids.vert_in_view_id, ids.gl_position,
ids.vert_out_color_id, ids.vert_out_texcoord0_id, ids.vert_out_texcoord1_id,
ids.vert_out_texcoord2_id, ids.vert_out_texcoord0_w_id, ids.vert_out_normquat_id,
// Inputs
ids.vert_in_position_id,
ids.vert_in_color_id,
ids.vert_in_texcoord0_id,
ids.vert_in_texcoord1_id,
ids.vert_in_texcoord2_id,
ids.vert_in_texcoord0_w_id,
ids.vert_in_normquat_id,
ids.vert_in_view_id,
// Outputs
ids.gl_position,
ids.gl_clip_distance,
ids.vert_out_color_id,
ids.vert_out_texcoord0_id,
ids.vert_out_texcoord1_id,
ids.vert_out_texcoord2_id,
ids.vert_out_texcoord0_w_id,
ids.vert_out_normquat_id,
ids.vert_out_view_id,
};
@ -63,7 +76,7 @@ void VertexModule::DefineEntryPoint() {
void VertexModule::DefineInterface() {
// Define interface block
// Inputs
/// Inputs
ids.vert_in_position_id =
Name(DefineInput(ids.vec_ids.Get(4), ATTRIBUTE_POSITION), "vert_in_position");
ids.vert_in_color_id = Name(DefineInput(ids.vec_ids.Get(4), ATTRIBUTE_COLOR), "vert_in_color");
@ -79,7 +92,7 @@ void VertexModule::DefineInterface() {
Name(DefineInput(ids.vec_ids.Get(4), ATTRIBUTE_NORMQUAT), "vert_in_normquat");
ids.vert_in_view_id = Name(DefineInput(ids.vec_ids.Get(3), ATTRIBUTE_VIEW), "vert_in_view");
// Outputs
/// Outputs
ids.vert_out_color_id =
Name(DefineOutput(ids.vec_ids.Get(4), ATTRIBUTE_COLOR), "vert_out_color");
ids.vert_out_texcoord0_id =
@ -94,9 +107,31 @@ void VertexModule::DefineInterface() {
Name(DefineOutput(ids.vec_ids.Get(4), ATTRIBUTE_NORMQUAT), "vert_out_normquat");
ids.vert_out_view_id = Name(DefineOutput(ids.vec_ids.Get(3), ATTRIBUTE_VIEW), "vert_out_view");
// Built-ins
/// Uniforms
// vs_data
const Id type_vs_data = Name(TypeStruct(ids.u32_id, ids.vec_ids.Get(4)), "vs_data");
Decorate(type_vs_data, spv::Decoration::Block);
ids.ptr_vs_data = AddGlobalVariable(TypePointer(spv::StorageClass::Uniform, type_vs_data),
spv::StorageClass::Uniform);
Decorate(ids.ptr_vs_data, spv::Decoration::DescriptorSet, 0);
Decorate(ids.ptr_vs_data, spv::Decoration::Binding, 1);
MemberName(type_vs_data, 0, "enable_clip1");
MemberName(type_vs_data, 1, "clip_coef");
MemberDecorate(type_vs_data, 0, spv::Decoration::Offset, 0);
MemberDecorate(type_vs_data, 1, spv::Decoration::Offset, 16);
/// Built-ins
ids.gl_position = DefineVar(ids.vec_ids.Get(4), spv::StorageClass::Output);
Decorate(ids.gl_position, spv::Decoration::BuiltIn, spv::BuiltIn::Position);
ids.gl_clip_distance =
DefineVar(TypeArray(ids.f32_id, Constant(ids.u32_id, 2)), spv::StorageClass::Output);
Decorate(ids.gl_clip_distance, spv::Decoration::BuiltIn, spv::BuiltIn::ClipDistance);
}
Id VertexModule::WriteFuncSanitizeVertex() {
@ -165,6 +200,13 @@ Id VertexModule::WriteFuncSanitizeVertex() {
void VertexModule::Generate(Common::UniqueFunction<void, Sirit::Module&, const EmitterIDs&> proc) {
AddLabel(OpLabel());
ids.ptr_enable_clip1 = OpAccessChain(TypePointer(spv::StorageClass::Uniform, ids.u32_id),
ids.ptr_vs_data, Constant(ids.u32_id, 0));
ids.ptr_clip_coef = OpAccessChain(TypePointer(spv::StorageClass::Uniform, ids.vec_ids.Get(4)),
ids.ptr_vs_data, Constant(ids.u32_id, 1));
proc(*this, ids);
OpReturn();
OpFunctionEnd();
@ -178,7 +220,8 @@ void VertexModule::Generate(const PicaVSConfig& config, const Profile& profile)
std::vector<u32> GenerateTrivialVertexShader(bool use_clip_planes) {
VertexModule module;
module.Generate([](Sirit::Module& code, const VertexModule::EmitterIDs& ids) -> void {
module.Generate([use_clip_planes](Sirit::Module& code,
const VertexModule::EmitterIDs& ids) -> void {
const Id pos_sanitized =
code.OpFunctionCall(ids.vec_ids.Get(4), ids.sanitize_vertex,
code.OpLoad(ids.vec_ids.Get(4), ids.vert_in_position_id));
@ -203,6 +246,47 @@ std::vector<u32> GenerateTrivialVertexShader(bool use_clip_planes) {
code.OpStore(ids.vert_out_normquat_id,
code.OpLoad(ids.vec_ids.Get(4), ids.vert_in_normquat_id));
code.OpStore(ids.vert_out_view_id, code.OpLoad(ids.vec_ids.Get(3), ids.vert_in_view_id));
if (use_clip_planes) {
code.OpStore(code.OpAccessChain(code.TypePointer(spv::StorageClass::Output, ids.f32_id),
ids.gl_clip_distance, code.Constant(ids.u32_id, 0)),
neg_z);
const Id enable_clip1 =
code.OpINotEqual(ids.bool_id, code.OpLoad(ids.u32_id, ids.ptr_enable_clip1),
code.Constant(ids.u32_id, 0));
{
const Id true_label = code.OpLabel();
const Id false_label = code.OpLabel();
const Id end_label = code.OpLabel();
code.OpSelectionMerge(end_label, spv::SelectionControlMask::MaskNone);
code.OpBranchConditional(enable_clip1, true_label, false_label);
{
code.AddLabel(true_label);
code.OpStore(
code.OpAccessChain(code.TypePointer(spv::StorageClass::Output, ids.f32_id),
ids.gl_clip_distance, code.Constant(ids.u32_id, 1)),
code.OpDot(ids.f32_id, code.OpLoad(ids.vec_ids.Get(4), ids.ptr_clip_coef),
pos_sanitized));
code.OpBranch(end_label);
}
{
code.AddLabel(false_label);
code.OpStore(
code.OpAccessChain(code.TypePointer(spv::StorageClass::Output, ids.f32_id),
ids.gl_clip_distance, code.Constant(ids.u32_id, 1)),
code.ConstantNull(ids.f32_id));
code.OpBranch(end_label);
}
code.AddLabel(end_label);
}
}
});
return module.Assemble();
}

8
src/video_core/shader/generator/spv_shader_gen.h
View File

@ -100,8 +100,16 @@ public:
Id vert_out_normquat_id{};
Id vert_out_view_id{};
// Uniforms
// vs_data
Id ptr_vs_data;
Id ptr_enable_clip1;
Id ptr_clip_coef;
// Built-ins
Id gl_position;
Id gl_clip_distance;
// Functions
Id sanitize_vertex;