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[SPIR-V] Vertex index writing to r0.x

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Triang3l
2020-11-03 23:31:52 +03:00
parent 6030a4cf72
commit 8665fa7517
4 changed files with 252 additions and 77 deletions
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33
src/xenia/gpu/spirv_shader_translator.h
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@@ -17,6 +17,7 @@
#include "third_party/glslang/SPIRV/SpvBuilder.h"
#include "xenia/gpu/shader_translator.h"
#include "xenia/gpu/xenos.h"
#include "xenia/ui/vulkan/vulkan_provider.h"
namespace xe {
@@ -24,6 +25,19 @@ namespace gpu {
class SpirvShaderTranslator : public ShaderTranslator {
public:
// IF SYSTEM CONSTANTS ARE CHANGED OR ADDED, THE FOLLOWING MUST BE UPDATED:
// - SystemConstantIndex enum.
// - Structure members in BeginTranslation.
struct SystemConstants {
xenos::Endian vertex_index_endian;
int32_t vertex_base_index;
};
// The minimum limit for maxPerStageDescriptorStorageBuffers is 4, and for
// maxStorageBufferRange it's 128 MB. These are the values of those limits on
// Arm Mali as of November 2020. Xenia needs 512 MB shared memory to be bound,
// therefore SSBOs must only be used for shared memory - all other storage
// resources must be images or texel buffers.
enum DescriptorSet : uint32_t {
// In order of update frequency.
// Very frequently changed, especially for UI draws, and for models drawn in
@@ -78,6 +92,17 @@ class SpirvShaderTranslator : public ShaderTranslator {
void ProcessAluInstruction(const ParsedAluInstruction& instr) override;
private:
// Builder helpers.
void SpirvCreateSelectionMerge(
spv::Id merge_block_id, spv::SelectionControlMask selection_control_mask =
spv::SelectionControlMaskNone) {
std::unique_ptr<spv::Instruction> selection_merge_op =
std::make_unique<spv::Instruction>(spv::OpSelectionMerge);
selection_merge_op->addIdOperand(merge_block_id);
selection_merge_op->addImmediateOperand(selection_control_mask);
builder_->getBuildPoint()->addInstruction(std::move(selection_merge_op));
}
// TODO(Triang3l): Depth-only pixel shader.
bool IsSpirvVertexOrTessEvalShader() const { return is_vertex_shader(); }
bool IsSpirvVertexShader() const {
@@ -176,6 +201,9 @@ class SpirvShaderTranslator : public ShaderTranslator {
spv::Id ProcessScalarAluOperation(const ParsedAluInstruction& instr,
bool& predicate_written);
// Perform endian swap of a uint scalar or vector.
spv::Id EndianSwap32Uint(spv::Id value, spv::Id endian);
Features features_;
std::unique_ptr<spv::Builder> builder_;
@@ -242,6 +270,11 @@ class SpirvShaderTranslator : public ShaderTranslator {
// components.
spv::Id const_float2_0_1_;
enum SystemConstantIndex : unsigned int {
kSystemConstantIndexVertexIndexEndian,
kSystemConstantIndexVertexBaseIndex,
};
spv::Id uniform_system_constants_;
spv::Id uniform_float_constants_;
spv::Id uniform_bool_loop_constants_;