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metal: avoid redundant resource binding calls.

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This commit is contained in:
Alex Szpakowski
2021-04-03 13:49:29 -03:00
parent 4ddb7e2cf7
commit 8c88d645a3
6 changed files with 128 additions and 71 deletions
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src/modules/graphics/metal/Graphics.mm
+109 -50
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@@ -145,6 +145,57 @@ static inline id<MTLBuffer> getMTLBuffer(love::graphics::Resource *res)
return res ? (__bridge id<MTLBuffer>)(void *) res->getHandle() : nil;
}
static inline void setBuffer(id<MTLRenderCommandEncoder> encoder, Graphics::RenderEncoderBindings &bindings, ShaderStage::StageType stage, int index, id<MTLBuffer> buffer, size_t offset)
{
void *b = (__bridge void *)buffer;
auto &binding = bindings.buffers[index][stage];
if (binding.buffer != b)
{
binding.buffer = b;
binding.offset = offset;
if (stage == ShaderStage::STAGE_VERTEX)
[encoder setVertexBuffer:buffer offset:offset atIndex:index];
else if (stage == ShaderStage::STAGE_PIXEL)
[encoder setFragmentBuffer:buffer offset:offset atIndex:index];
}
else if (binding.offset != offset)
{
binding.offset = offset;
if (stage == ShaderStage::STAGE_VERTEX)
[encoder setVertexBufferOffset:offset atIndex:index];
else if (stage == ShaderStage::STAGE_PIXEL)
[encoder setFragmentBufferOffset:offset atIndex:index];
}
}
static inline void setTexture(id<MTLRenderCommandEncoder> encoder, Graphics::RenderEncoderBindings &bindings, ShaderStage::StageType stage, int index, id<MTLTexture> texture)
{
void *t = (__bridge void *)texture;
auto &binding = bindings.textures[index][stage];
if (binding != t)
{
binding = t;
if (stage == ShaderStage::STAGE_VERTEX)
[encoder setVertexTexture:texture atIndex:index];
else if (stage == ShaderStage::STAGE_PIXEL)
[encoder setFragmentTexture:texture atIndex:index];
}
}
static inline void setSampler(id<MTLRenderCommandEncoder> encoder, Graphics::RenderEncoderBindings &bindings, ShaderStage::StageType stage, int index, id<MTLSamplerState> sampler)
{
void *s = (__bridge void *)sampler;
auto &binding = bindings.samplers[index][stage];
if (binding != s)
{
binding = s;
if (stage == ShaderStage::STAGE_VERTEX)
[encoder setVertexSamplerState:sampler atIndex:index];
else if (stage == ShaderStage::STAGE_PIXEL)
[encoder setFragmentSamplerState:sampler atIndex:index];
}
}
love::graphics::Graphics *createInstance()
{
love::graphics::Graphics *instance = nullptr;
@@ -182,6 +233,7 @@ Graphics::Graphics()
, windowHasStencil(false)
, requestedBackbufferMSAA(0)
, attachmentStoreActions()
, renderBindings()
, uniformBufferOffset(0)
, defaultAttributesBuffer(nullptr)
, defaultTextures()
@@ -226,6 +278,35 @@ Graphics::Graphics()
defaultTextures[i]->replacePixels(defaultpixel, sizeof(defaultpixel), 0, 0, r, false);
}
if (batchedDrawState.vb[0] == nullptr)
{
// Initial sizes that should be good enough for most cases. It will
// resize to fit if needed, later.
batchedDrawState.vb[0] = CreateStreamBuffer(device, BUFFERUSAGE_VERTEX, 1024 * 1024 * 1);
batchedDrawState.vb[1] = CreateStreamBuffer(device, BUFFERUSAGE_VERTEX, 256 * 1024 * 1);
batchedDrawState.indexBuffer = CreateStreamBuffer(device, BUFFERUSAGE_INDEX, sizeof(uint16) * LOVE_UINT16_MAX);
}
createQuadIndexBuffer();
// We always need a default shader.
for (int i = 0; i < Shader::STANDARD_MAX_ENUM; i++)
{
auto stype = (Shader::StandardShader) i;
if (!Shader::standardShaders[i])
{
std::vector<std::string> stages;
stages.push_back(Shader::getDefaultCode(stype, ShaderStage::STAGE_VERTEX));
stages.push_back(Shader::getDefaultCode(stype, ShaderStage::STAGE_PIXEL));
Shader::standardShaders[i] = newShader(stages);
}
}
// A shader should always be active, but the default shader shouldn't be
// returned by getShader(), so we don't do setShader(defaultShader).
if (!Shader::current)
Shader::standardShaders[Shader::STANDARD_DEFAULT]->attach();
auto window = Module::getInstance<love::window::Window>(M_WINDOW);
if (window != nullptr)
@@ -347,38 +428,9 @@ bool Graphics::setMode(void *context, int width, int height, int pixelwidth, int
created = true;
if (batchedDrawState.vb[0] == nullptr)
{
// Initial sizes that should be good enough for most cases. It will
// resize to fit if needed, later.
batchedDrawState.vb[0] = CreateStreamBuffer(device, BUFFERUSAGE_VERTEX, 1024 * 1024 * 1);
batchedDrawState.vb[1] = CreateStreamBuffer(device, BUFFERUSAGE_VERTEX, 256 * 1024 * 1);
batchedDrawState.indexBuffer = CreateStreamBuffer(device, BUFFERUSAGE_INDEX, sizeof(uint16) * LOVE_UINT16_MAX);
}
createQuadIndexBuffer();
// Restore the graphics state.
restoreState(states.back());
// We always need a default shader.
for (int i = 0; i < Shader::STANDARD_MAX_ENUM; i++)
{
auto stype = (Shader::StandardShader) i;
if (!Shader::standardShaders[i])
{
std::vector<std::string> stages;
stages.push_back(Shader::getDefaultCode(stype, ShaderStage::STAGE_VERTEX));
stages.push_back(Shader::getDefaultCode(stype, ShaderStage::STAGE_PIXEL));
Shader::standardShaders[i] = newShader(stages);
}
}
// A shader should always be active, but the default shader shouldn't be
// returned by getShader(), so we don't do setShader(defaultShader).
if (!Shader::current)
Shader::standardShaders[Shader::STANDARD_DEFAULT]->attach();
return true;
}}
@@ -441,7 +493,7 @@ void Graphics::submitCommandBuffer()
}
}
static inline void setAttachment(const Graphics::RenderTarget &rt, MTLRenderPassAttachmentDescriptor *desc, MTLStoreAction &storeaction)
static inline void setAttachment(const Graphics::RenderTarget &rt, MTLRenderPassAttachmentDescriptor *desc, MTLStoreAction &storeaction, bool setload = true)
{
bool isvolume = rt.texture->getTextureType() == TEXTURE_VOLUME;
@@ -450,8 +502,12 @@ static inline void setAttachment(const Graphics::RenderTarget &rt, MTLRenderPass
desc.slice = isvolume ? 0 : rt.slice;
desc.depthPlane = isvolume ? rt.slice : 0;
// Default to load until clear or discard is called.
desc.loadAction = MTLLoadActionLoad;
if (setload)
{
// Default to load until clear or discard is called.
desc.loadAction = MTLLoadActionLoad;
}
desc.storeAction = MTLStoreActionUnknown;
storeaction = MTLStoreActionStore;
@@ -504,14 +560,16 @@ id<MTLRenderCommandEncoder> Graphics::useRenderEncoder()
passDesc.colorAttachments[0].depthPlane = 0;
RenderTarget rt(backbufferDepthStencil);
setAttachment(rt, passDesc.depthAttachment, attachmentStoreActions.depth);
setAttachment(rt, passDesc.stencilAttachment, attachmentStoreActions.stencil);
setAttachment(rt, passDesc.depthAttachment, attachmentStoreActions.depth, false);
setAttachment(rt, passDesc.stencilAttachment, attachmentStoreActions.stencil, false);
attachmentStoreActions.depth = MTLStoreActionDontCare;
attachmentStoreActions.stencil = MTLStoreActionDontCare;
}
renderEncoder = [useCommandBuffer() renderCommandEncoderWithDescriptor:passDesc];
renderBindings = {};
for (int i = 0; i < MAX_COLOR_RENDER_TARGETS; i++)
{
passDesc.colorAttachments[0].texture = nil;
@@ -524,7 +582,7 @@ id<MTLRenderCommandEncoder> Graphics::useRenderEncoder()
passDesc.stencilAttachment.resolveTexture = nil;
id<MTLBuffer> defaultbuffer = getMTLBuffer(defaultAttributesBuffer);
[renderEncoder setVertexBuffer:defaultbuffer offset:0 atIndex:DEFAULT_VERTEX_BUFFER_BINDING];
setBuffer(renderEncoder, renderBindings, ShaderStage::STAGE_VERTEX, DEFAULT_VERTEX_BUFFER_BINDING, defaultbuffer, 0);
dirtyRenderState = STATEBIT_ALL;
}
@@ -850,8 +908,9 @@ void Graphics::applyShaderUniforms(id<MTLRenderCommandEncoder> renderEncoder, lo
id<MTLBuffer> buffer = getMTLBuffer(uniformBuffer);
int uniformindex = Shader::getUniformBufferBinding();
[renderEncoder setVertexBuffer:buffer offset:uniformBufferOffset atIndex:uniformindex];
[renderEncoder setFragmentBuffer:buffer offset:uniformBufferOffset atIndex:uniformindex];
auto &bindings = renderBindings;
setBuffer(renderEncoder, bindings, ShaderStage::STAGE_VERTEX, uniformindex, buffer, uniformBufferOffset);
setBuffer(renderEncoder, bindings, ShaderStage::STAGE_PIXEL, uniformindex, buffer, uniformBufferOffset);
uniformBufferOffset += alignUp(size, alignment);
@@ -873,25 +932,25 @@ void Graphics::applyShaderUniforms(id<MTLRenderCommandEncoder> renderEncoder, lo
sampler = getMTLSampler(maintex);
}
uint8 texindex = b.texturestages[ShaderStage::STAGE_VERTEX];
uint8 sampindex = b.samplerstages[ShaderStage::STAGE_VERTEX];
uint8 texindex = b.textureStages[ShaderStage::STAGE_VERTEX];
uint8 sampindex = b.samplerStages[ShaderStage::STAGE_VERTEX];
if (texindex != LOVE_UINT8_MAX)
[renderEncoder setVertexTexture:texture atIndex:texindex];
setTexture(renderEncoder, bindings, ShaderStage::STAGE_VERTEX, texindex, texture);
if (sampindex != LOVE_UINT8_MAX)
[renderEncoder setVertexSamplerState:sampler atIndex:sampindex];
setSampler(renderEncoder, bindings, ShaderStage::STAGE_VERTEX, sampindex, sampler);
texindex = b.texturestages[ShaderStage::STAGE_PIXEL];
sampindex = b.samplerstages[ShaderStage::STAGE_PIXEL];
texindex = b.textureStages[ShaderStage::STAGE_PIXEL];
sampindex = b.samplerStages[ShaderStage::STAGE_PIXEL];
if (texindex != LOVE_UINT8_MAX)
[renderEncoder setFragmentTexture:texture atIndex:texindex];
setTexture(renderEncoder, bindings, ShaderStage::STAGE_PIXEL, texindex, texture);
if (sampindex != LOVE_UINT8_MAX)
[renderEncoder setFragmentSamplerState:sampler atIndex:sampindex];
setSampler(renderEncoder, bindings, ShaderStage::STAGE_PIXEL, sampindex, sampler);
}
}
static void setVertexBuffers(id<MTLRenderCommandEncoder> encoder, const BufferBindings *buffers)
static void setVertexBuffers(id<MTLRenderCommandEncoder> encoder, const BufferBindings *buffers, Graphics::RenderEncoderBindings &bindings)
{
uint32 allbits = buffers->useBits;
uint32 i = 0;
@@ -903,7 +962,7 @@ static void setVertexBuffers(id<MTLRenderCommandEncoder> encoder, const BufferBi
{
auto b = buffers->info[i];
id<MTLBuffer> buffer = getMTLBuffer(b.buffer);
[encoder setVertexBuffer:buffer offset:b.offset atIndex:i + VERTEX_BUFFER_BINDING_START];
setBuffer(encoder, bindings, ShaderStage::STAGE_VERTEX, i + VERTEX_BUFFER_BINDING_START, buffer, b.offset);
}
i++;
@@ -920,7 +979,7 @@ void Graphics::draw(const DrawCommand &cmd)
[encoder setCullMode:MTLCullModeNone];
setVertexBuffers(encoder, cmd.buffers);
setVertexBuffers(encoder, cmd.buffers, renderBindings);
[encoder drawPrimitives:getMTLPrimitiveType(cmd.primitiveType)
vertexStart:cmd.vertexStart
@@ -937,7 +996,7 @@ void Graphics::draw(const DrawIndexedCommand &cmd)
[encoder setCullMode:MTLCullModeNone];
setVertexBuffers(encoder, cmd.buffers);
setVertexBuffers(encoder, cmd.buffers, renderBindings);
auto indexType = cmd.indexType == INDEX_UINT32 ? MTLIndexTypeUInt32 : MTLIndexTypeUInt16;
@@ -961,7 +1020,7 @@ void Graphics::drawQuads(int start, int count, const VertexAttributes &attribute
[encoder setCullMode:MTLCullModeNone];
setVertexBuffers(encoder, &buffers);
setVertexBuffers(encoder, &buffers, renderBindings);
id<MTLBuffer> ib = getMTLBuffer(quadIndexBuffer);