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implement pipeline cache

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This commit is contained in:
Samuliak 2024-07-03 09:36:23 +02:00
parent 1ba54b44fb
commit 9241306d4d
4 changed files with 157 additions and 98 deletions
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83
include/renderer_mtl/mtl_pipeline_cache.hpp Normal file
View file

@ -0,0 +1,83 @@
#pragma once
#include "pica_to_mtl.hpp"
using namespace PICA;
namespace Metal {
struct PipelineHash {
ColorFmt colorFmt;
DepthFmt depthFmt;
};
// Bind the vertex buffer to binding 30 so that it doesn't occupy the lower indices
#define VERTEX_BUFFER_BINDING_INDEX 30
// This pipeline only caches the pipeline with all of its color and depth attachment variations
class PipelineCache {
public:
PipelineCache() = default;
~PipelineCache() {
clear();
vertexDescriptor->release();
vertexFunction->release();
fragmentFunction->release();
}
void set(MTL::Device* dev, MTL::Function* vert, MTL::Function* frag, MTL::VertexDescriptor* vertDesc) {
device = dev;
vertexFunction = vert;
fragmentFunction = frag;
vertexDescriptor = vertDesc;
}
MTL::RenderPipelineState* get(PipelineHash hash) {
u8 intHash = (u8)hash.colorFmt << 4 | (u8)hash.depthFmt;
auto& pipeline = pipelineCache[intHash];
if (!pipeline) {
MTL::RenderPipelineDescriptor* desc = MTL::RenderPipelineDescriptor::alloc()->init();
desc->setVertexFunction(vertexFunction);
desc->setFragmentFunction(fragmentFunction);
desc->setVertexDescriptor(vertexDescriptor);
auto colorAttachment = desc->colorAttachments()->object(0);
colorAttachment->setPixelFormat(toMTLPixelFormatColor(hash.colorFmt));
colorAttachment->setBlendingEnabled(true);
colorAttachment->setSourceRGBBlendFactor(MTL::BlendFactorSourceAlpha);
colorAttachment->setDestinationRGBBlendFactor(MTL::BlendFactorOneMinusSourceAlpha);
colorAttachment->setSourceAlphaBlendFactor(MTL::BlendFactorSourceAlpha);
colorAttachment->setDestinationAlphaBlendFactor(MTL::BlendFactorOneMinusSourceAlpha);
desc->setDepthAttachmentPixelFormat(toMTLPixelFormatDepth(hash.depthFmt));
NS::Error* error = nullptr;
pipeline = device->newRenderPipelineState(desc, &error);
if (error) {
Helpers::panic("Error creating draw pipeline state: %s", error->description()->cString(NS::ASCIIStringEncoding));
}
desc->release();
}
return pipeline;
}
void clear() {
for (auto& pair : pipelineCache) {
pair.second->release();
}
pipelineCache.clear();
}
private:
std::unordered_map<u8, MTL::RenderPipelineState*> pipelineCache;
MTL::Device* device;
MTL::Function* vertexFunction;
MTL::Function* fragmentFunction;
MTL::VertexDescriptor* vertexDescriptor;
};
} // namespace Metal

29
include/renderer_mtl/pica_to_mtl.hpp
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@ -3,28 +3,25 @@
#include <Metal/Metal.hpp>
#include "PICA/regs.hpp"
// HACK: both functions return a hardcoded format for now, since render pipeline needs to know the format at creation time
namespace PICA {
inline MTL::PixelFormat toMTLPixelFormatColor(ColorFmt format) {
return MTL::PixelFormatRGBA8Unorm;
//switch (format) {
//case ColorFmt::RGBA8: return MTL::PixelFormatRGBA8Unorm;
//case ColorFmt::RGB8: return MTL::PixelFormatRGBA8Unorm; // TODO: return the correct format
//case ColorFmt::RGBA5551: return MTL::PixelFormatBGR5A1Unorm;
//case ColorFmt::RGB565: return MTL::PixelFormatB5G6R5Unorm; // TODO: check if this is correct
//case ColorFmt::RGBA4: return MTL::PixelFormatABGR4Unorm; // TODO: check if this is correct
//}
switch (format) {
case ColorFmt::RGBA8: return MTL::PixelFormatRGBA8Unorm;
case ColorFmt::RGB8: return MTL::PixelFormatRGBA8Unorm; // TODO: return the correct format
case ColorFmt::RGBA5551: return MTL::PixelFormatBGR5A1Unorm;
case ColorFmt::RGB565: return MTL::PixelFormatB5G6R5Unorm; // TODO: check if this is correct
case ColorFmt::RGBA4: return MTL::PixelFormatABGR4Unorm; // TODO: check if this is correct
}
}
inline MTL::PixelFormat toMTLPixelFormatDepth(DepthFmt format) {
return MTL::PixelFormatDepth24Unorm_Stencil8;
//switch (format) {
//case DepthFmt::Depth16: return MTL::PixelFormatDepth16Unorm;
//case DepthFmt::Unknown1: return MTL::PixelFormatInvalid;
//case DepthFmt::Depth24: return MTL::PixelFormatDepth32Float; // TODO: is this okay?
//case DepthFmt::Depth24Stencil8: return MTL::PixelFormatDepth24Unorm_Stencil8;
//}
switch (format) {
case DepthFmt::Depth16: return MTL::PixelFormatDepth16Unorm;
case DepthFmt::Unknown1: return MTL::PixelFormatInvalid;
case DepthFmt::Depth24: return MTL::PixelFormatDepth32Float; // TODO: is this okay?
case DepthFmt::Depth24Stencil8: return MTL::PixelFormatDepth24Unorm_Stencil8;
}
}
} // namespace PICA

5
include/renderer_mtl/renderer_mtl.hpp
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@ -4,6 +4,7 @@
#include "renderer.hpp"
#include "texture.hpp"
#include "render_target.hpp"
#include "mtl_pipeline_cache.hpp"
// HACK: use the OpenGL cache
#include "../renderer_gl/surface_cache.hpp"
@ -38,14 +39,14 @@ class RendererMTL final : public Renderer {
SurfaceCache<Metal::ColorRenderTarget, 16, true> colorRenderTargetCache;
SurfaceCache<Metal::DepthStencilRenderTarget, 16, true> depthStencilRenderTargetCache;
SurfaceCache<Metal::Texture, 256, true> textureCache;
Metal::PipelineCache blitPipelineCache;
Metal::PipelineCache drawPipelineCache;
// Helpers
MTL::SamplerState* basicSampler;
// Pipelines
MTL::RenderPipelineState* displayPipeline;
MTL::RenderPipelineState* blitPipeline;
MTL::RenderPipelineState* drawPipeline;
// Active state
MTL::CommandBuffer* commandBuffer = nullptr;

48
src/core/renderer_mtl/renderer_mtl.cpp
View file

@ -10,9 +10,6 @@ using namespace PICA;
CMRC_DECLARE(RendererMTL);
// Bind the vertex buffer to binding 30 so that it doesn't occupy the lower indices
#define VERTEX_BUFFER_BINDING_INDEX 30
// HACK: redefinition...
PICA::ColorFmt ToColorFormat(u32 format) {
switch (format) {
@ -131,34 +128,12 @@ void RendererMTL::initGraphicsContext(SDL_Window* window) {
MTL::Function* vertexBlitFunction = library->newFunction(NS::String::string("vertexBlit", NS::ASCIIStringEncoding));
MTL::Function* fragmentBlitFunction = library->newFunction(NS::String::string("fragmentBlit", NS::ASCIIStringEncoding));
MTL::RenderPipelineDescriptor* blitPipelineDescriptor = MTL::RenderPipelineDescriptor::alloc()->init();
blitPipelineDescriptor->setVertexFunction(vertexBlitFunction);
blitPipelineDescriptor->setFragmentFunction(fragmentBlitFunction);
auto* blitColorAttachment = blitPipelineDescriptor->colorAttachments()->object(0);
blitColorAttachment->setPixelFormat(MTL::PixelFormat::PixelFormatBGRA8Unorm);
error = nullptr;
blitPipeline = device->newRenderPipelineState(blitPipelineDescriptor, &error);
if (error) {
Helpers::panic("Error creating blit pipeline state: %s", error->description()->cString(NS::ASCIIStringEncoding));
}
blitPipelineCache.set(device, vertexBlitFunction, fragmentBlitFunction, nullptr);
// Draw
MTL::Function* vertexDrawFunction = library->newFunction(NS::String::string("vertexDraw", NS::ASCIIStringEncoding));
MTL::Function* fragmentDrawFunction = library->newFunction(NS::String::string("fragmentDraw", NS::ASCIIStringEncoding));
MTL::RenderPipelineDescriptor* drawPipelineDescriptor = MTL::RenderPipelineDescriptor::alloc()->init();
drawPipelineDescriptor->setVertexFunction(vertexDrawFunction);
drawPipelineDescriptor->setFragmentFunction(fragmentDrawFunction);
auto* drawColorAttachment = drawPipelineDescriptor->colorAttachments()->object(0);
drawColorAttachment->setPixelFormat(MTL::PixelFormatRGBA8Unorm);
drawColorAttachment->setBlendingEnabled(true);
drawColorAttachment->setSourceRGBBlendFactor(MTL::BlendFactorSourceAlpha);
drawColorAttachment->setDestinationRGBBlendFactor(MTL::BlendFactorOneMinusSourceAlpha);
drawColorAttachment->setSourceAlphaBlendFactor(MTL::BlendFactorSourceAlpha);
drawColorAttachment->setDestinationAlphaBlendFactor(MTL::BlendFactorOneMinusSourceAlpha);
// -------- Vertex descriptor --------
MTL::VertexDescriptor* vertexDescriptor = MTL::VertexDescriptor::alloc()->init();
@ -214,13 +189,8 @@ void RendererMTL::initGraphicsContext(SDL_Window* window) {
vertexBufferLayout->setStride(sizeof(Vertex));
vertexBufferLayout->setStepFunction(MTL::VertexStepFunctionPerVertex);
vertexBufferLayout->setStepRate(1);
drawPipelineDescriptor->setVertexDescriptor(vertexDescriptor);
error = nullptr;
drawPipeline = device->newRenderPipelineState(drawPipelineDescriptor, &error);
if (error) {
Helpers::panic("Error creating draw pipeline state: %s", error->description()->cString(NS::ASCIIStringEncoding));
}
drawPipelineCache.set(device, vertexDrawFunction, fragmentDrawFunction, vertexDescriptor);
}
void RendererMTL::clearBuffer(u32 startAddress, u32 endAddress, u32 value, u32 control) {
@ -295,6 +265,10 @@ void RendererMTL::displayTransfer(u32 inputAddr, u32 outputAddr, u32 inputSize,
colorAttachment->setClearColor(MTL::ClearColor{0.0, 0.0, 0.0, 1.0});
colorAttachment->setStoreAction(MTL::StoreActionStore);
// Pipeline
Metal::PipelineHash hash{destFramebuffer->format, DepthFmt::Unknown1};
auto blitPipeline = blitPipelineCache.get(hash);
MTL::RenderCommandEncoder* renderCommandEncoder = commandBuffer->renderCommandEncoder(renderPassDescriptor);
renderCommandEncoder->setRenderPipelineState(blitPipeline);
renderCommandEncoder->setFragmentTexture(srcFramebuffer->texture, 0);
@ -313,17 +287,21 @@ void RendererMTL::textureCopy(u32 inputAddr, u32 outputAddr, u32 totalBytes, u32
void RendererMTL::drawVertices(PICA::PrimType primType, std::span<const PICA::Vertex> vertices) {
createCommandBufferIfNeeded();
MTL::Texture* renderTarget = getColorRenderTarget(colourBufferLoc, colourBufferFormat, fbSize[0], fbSize[1])->texture;
auto renderTarget = getColorRenderTarget(colourBufferLoc, colourBufferFormat, fbSize[0], fbSize[1]);
// TODO: don't begin a new render pass every time
MTL::RenderPassDescriptor* renderPassDescriptor = MTL::RenderPassDescriptor::alloc()->init();
MTL::RenderPassColorAttachmentDescriptor* colorAttachment = renderPassDescriptor->colorAttachments()->object(0);
colorAttachment->setTexture(renderTarget);
colorAttachment->setTexture(renderTarget->texture);
colorAttachment->setLoadAction(MTL::LoadActionLoad);
colorAttachment->setStoreAction(MTL::StoreActionStore);
// Pipeline
Metal::PipelineHash hash{renderTarget->format, PICA::DepthFmt::Unknown1};
MTL::RenderPipelineState* pipeline = drawPipelineCache.get(hash);
MTL::RenderCommandEncoder* renderCommandEncoder = commandBuffer->renderCommandEncoder(renderPassDescriptor);
renderCommandEncoder->setRenderPipelineState(drawPipeline);
renderCommandEncoder->setRenderPipelineState(pipeline);
// If size is < 4KB, use inline vertex data, otherwise use a buffer
if (vertices.size_bytes() < 4 * 1024) {
renderCommandEncoder->setVertexBytes(vertices.data(), vertices.size_bytes(), VERTEX_BUFFER_BINDING_INDEX);