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do the copy on the GPU

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This commit is contained in:
Samuliak 2024-07-06 09:58:20 +02:00
parent 80bd8f54c3
commit 42fc2bb490
3 changed files with 39 additions and 18 deletions
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3
include/renderer_mtl/renderer_mtl.hpp
View file

@ -51,6 +51,7 @@ class RendererMTL final : public Renderer {
MTL::SamplerState* nearestSampler;
MTL::SamplerState* linearSampler;
MTL::Texture* lightLUTTextureArray;
MTL::DepthStencilState* defaultDepthStencilState;
// Pipelines
MTL::RenderPipelineState* displayPipeline;
@ -104,5 +105,5 @@ class RendererMTL final : public Renderer {
Metal::Texture& getTexture(Metal::Texture& tex);
void setupTextureEnvState(MTL::RenderCommandEncoder* encoder);
void bindTexturesToSlots(MTL::RenderCommandEncoder* encoder);
void updateLightingLUT();
void updateLightingLUT(MTL::RenderCommandEncoder* encoder);
};

52
src/core/renderer_mtl/renderer_mtl.cpp
View file

@ -11,7 +11,7 @@ using namespace PICA;
CMRC_DECLARE(RendererMTL);
#define LIGHT_LUT_TEXTURE_WIDTH 256
const u16 LIGHT_LUT_TEXTURE_WIDTH = 256;
// HACK: redefinition...
PICA::ColorFmt ToColorFormat(u32 format) {
@ -117,8 +117,8 @@ void RendererMTL::initGraphicsContext(SDL_Window* window) {
textureDescriptor->setPixelFormat(MTL::PixelFormatR16Uint);
textureDescriptor->setWidth(LIGHT_LUT_TEXTURE_WIDTH);
textureDescriptor->setArrayLength(Lights::LUT_Count);
textureDescriptor->setUsage(MTL::TextureUsageShaderRead);
textureDescriptor->setStorageMode(MTL::StorageModeShared);
textureDescriptor->setUsage(MTL::TextureUsageShaderRead | MTL::TextureUsageShaderWrite);
textureDescriptor->setStorageMode(MTL::StorageModePrivate);
lightLUTTextureArray = device->newTexture(textureDescriptor);
textureDescriptor->release();
@ -224,12 +224,20 @@ void RendererMTL::initGraphicsContext(SDL_Window* window) {
drawPipelineCache.set(device, library, vertexDrawFunction, vertexDescriptor);
// Copy to LUT texture
MTL::Function* vertexCopyToLutTextureFunction = copyToLutTextureLibrary->newFunction(NS::String::string("vertexCopyToLutTexture", NS::ASCIIStringEncoding));
MTL::FunctionConstantValues* constants = MTL::FunctionConstantValues::alloc()->init();
constants->setConstantValue(&LIGHT_LUT_TEXTURE_WIDTH, MTL::DataTypeUShort, NS::UInteger(0));
error = nullptr;
MTL::Function* vertexCopyToLutTextureFunction = copyToLutTextureLibrary->newFunction(NS::String::string("vertexCopyToLutTexture", NS::ASCIIStringEncoding), constants, &error);
if (error) {
Helpers::panic("Error creating copy_to_lut_texture vertex function: %s", error->description()->cString(NS::ASCIIStringEncoding));
}
constants->release();
MTL::RenderPipelineDescriptor* copyToLutTexturePipelineDescriptor = MTL::RenderPipelineDescriptor::alloc()->init();
copyToLutTexturePipelineDescriptor->setVertexFunction(vertexDisplayFunction);
auto* copyToLutTextureColorAttachment = copyToLutTexturePipelineDescriptor->colorAttachments()->object(0);
copyToLutTextureColorAttachment->setPixelFormat(MTL::PixelFormat::PixelFormatBGRA8Unorm);
copyToLutTexturePipelineDescriptor->setVertexFunction(vertexCopyToLutTextureFunction);
// Disable rasterization
copyToLutTexturePipelineDescriptor->setRasterizationEnabled(false);
error = nullptr;
copyToLutTexturePipeline = device->newRenderPipelineState(copyToLutTexturePipelineDescriptor, &error);
@ -242,6 +250,10 @@ void RendererMTL::initGraphicsContext(SDL_Window* window) {
// Vertex buffer cache
vertexBufferCache.set(device);
// -------- Depth stencil state --------
MTL::DepthStencilDescriptor* depthStencilDescriptor = MTL::DepthStencilDescriptor::alloc()->init();
defaultDepthStencilState = device->newDepthStencilState(depthStencilDescriptor);
}
void RendererMTL::clearBuffer(u32 startAddress, u32 endAddress, u32 value, u32 control) {
@ -450,6 +462,12 @@ void RendererMTL::drawVertices(PICA::PrimType primType, std::span<const PICA::Ve
}
beginRenderPassIfNeeded(renderPassDescriptor, colorRenderTarget->texture, (depthStencilRenderTarget ? depthStencilRenderTarget->texture : nullptr));
// Update the LUT texture if necessary
if (gpu.lightingLUTDirty) {
updateLightingLUT(renderCommandEncoder);
}
renderCommandEncoder->setRenderPipelineState(pipeline);
renderCommandEncoder->setDepthStencilState(depthStencilState);
// If size is < 4KB, use inline vertex data, otherwise use a buffer
@ -460,11 +478,6 @@ void RendererMTL::drawVertices(PICA::PrimType primType, std::span<const PICA::Ve
renderCommandEncoder->setVertexBuffer(buffer.buffer, buffer.offset, VERTEX_BUFFER_BINDING_INDEX);
}
// Update the LUT texture if necessary
if (gpu.lightingLUTDirty) {
updateLightingLUT();
}
// Bind resources
setupTextureEnvState(renderCommandEncoder);
bindTexturesToSlots(renderCommandEncoder);
@ -600,7 +613,7 @@ void RendererMTL::bindTexturesToSlots(MTL::RenderCommandEncoder* encoder) {
encoder->setFragmentSamplerState(linearSampler, 3);
}
void RendererMTL::updateLightingLUT() {
void RendererMTL::updateLightingLUT(MTL::RenderCommandEncoder* encoder) {
gpu.lightingLUTDirty = false;
std::array<u16, GPU::LightingLutSize> u16_lightinglut;
@ -609,7 +622,14 @@ void RendererMTL::updateLightingLUT() {
u16_lightinglut[i] = value * 65535 / 4095;
}
for (int i = 0; i < Lights::LUT_Count; i++) {
lightLUTTextureArray->replaceRegion(MTL::Region(0, 0, LIGHT_LUT_TEXTURE_WIDTH, 1), 0, i, u16_lightinglut.data() + LIGHT_LUT_TEXTURE_WIDTH * i, 0, 0);
}
//for (int i = 0; i < Lights::LUT_Count; i++) {
// lightLUTTextureArray->replaceRegion(MTL::Region(0, 0, LIGHT_LUT_TEXTURE_WIDTH, 1), 0, i, u16_lightinglut.data() + LIGHT_LUT_TEXTURE_WIDTH * i, 0, 0);
//}
renderCommandEncoder->setRenderPipelineState(copyToLutTexturePipeline);
renderCommandEncoder->setDepthStencilState(defaultDepthStencilState);
renderCommandEncoder->setVertexTexture(lightLUTTextureArray, 0);
renderCommandEncoder->setVertexBytes(u16_lightinglut.data(), sizeof(u16_lightinglut), 0);
renderCommandEncoder->drawPrimitives(MTL::PrimitiveTypeTriangle, NS::UInteger(0), GPU::LightingLutSize);
}

2
src/host_shaders/metal_copy_to_lut_texture.metal
View file

@ -3,6 +3,6 @@ using namespace metal;
constant ushort lutTextureWidth [[function_constant(0)]];
vertex void vertexCopyToLutTexture(uint vid [[vertex_id]], constant ushort* data [[buffer(0)]], texture1d_array<ushort, access::write> out [[texture(0)]]) {
vertex void vertexCopyToLutTexture(uint vid [[vertex_id]], texture1d_array<ushort, access::write> out [[texture(0)]], constant ushort* data [[buffer(0)]]) {
out.write(data[vid], vid % lutTextureWidth, vid / lutTextureWidth);
}