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* Copyright 2018 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrMtlPipelineState_DEFINED
#define GrMtlPipelineState_DEFINED
#include "include/private/GrTypesPriv.h"
#include "src/gpu/GrStencilSettings.h"
#include "src/gpu/glsl/GrGLSLProgramBuilder.h"
#include "src/gpu/mtl/GrMtlBuffer.h"
#include "src/gpu/mtl/GrMtlPipelineStateDataManager.h"
#import <Metal/Metal.h>
class GrMtlGpu;
class GrMtlPipelineStateDataManager;
class GrMtlSampler;
class GrMtlTexture;
class GrPipeline;
* Wraps a MTLRenderPipelineState object and also contains more info about the pipeline as needed
* by Ganesh
class GrMtlPipelineState {
using UniformInfoArray = GrMtlPipelineStateDataManager::UniformInfoArray;
using UniformHandle = GrGLSLProgramDataManager::UniformHandle;
GrMtlGpu* gpu,
id<MTLRenderPipelineState> pipelineState,
MTLPixelFormat pixelFormat,
const GrGLSLBuiltinUniformHandles& builtinUniformHandles,
const UniformInfoArray& uniforms,
uint32_t uniformBufferSize,
uint32_t numSamplers,
std::unique_ptr<GrGLSLPrimitiveProcessor> geometryProcessor,
std::unique_ptr<GrGLSLXferProcessor> xferProcessor,
std::vector<std::unique_ptr<GrGLSLFragmentProcessor>> fpImpls);
id<MTLRenderPipelineState> mtlPipelineState() { return fPipelineState; }
void setData(const GrRenderTarget*, const GrProgramInfo&);
void setTextures(const GrPrimitiveProcessor&, const GrPipeline&, const GrSurfaceProxy* const[]);
void bindTextures(id<MTLRenderCommandEncoder> renderCmdEncoder);
void setDrawState(id<MTLRenderCommandEncoder>,
const GrSwizzle& writeSwizzle,
const GrXferProcessor&);
static void SetDynamicScissorRectState(id<MTLRenderCommandEncoder> renderCmdEncoder,
const GrRenderTarget* renderTarget,
GrSurfaceOrigin rtOrigin,
SkIRect scissorRect);
bool doesntSampleAttachment(const MTLRenderPassAttachmentDescriptor*) const;
* We use the RT's size and origin to adjust from Skia device space to Metal normalized device
* space and to make device space positions have the correct origin for processors that require
* them.
struct RenderTargetState {
SkISize fRenderTargetSize;
GrSurfaceOrigin fRenderTargetOrigin;
RenderTargetState() { this->invalidate(); }
void invalidate() {
fRenderTargetSize.fWidth = -1;
fRenderTargetSize.fHeight = -1;
fRenderTargetOrigin = (GrSurfaceOrigin)-1;
* Gets a float4 that adjusts the position from Skia device coords to Metals normalized
* device coords. Assuming the transformed position, pos, is a homogeneous float3, the vec,
* v, is applied as such:
* pos.x = dot(v.xy, pos.xz)
* pos.y = dot(, pos.yz)
void getRTAdjustmentVec(float* destVec) {
destVec[0] = 2.f / fRenderTargetSize.fWidth;
destVec[1] = -1.f;
if (kBottomLeft_GrSurfaceOrigin == fRenderTargetOrigin) {
destVec[2] = -2.f / fRenderTargetSize.fHeight;
destVec[3] = 1.f;
} else {
destVec[2] = 2.f / fRenderTargetSize.fHeight;
destVec[3] = -1.f;
void setRenderTargetState(const GrRenderTarget*, GrSurfaceOrigin);
void bindUniforms(id<MTLRenderCommandEncoder>);
void setBlendConstants(id<MTLRenderCommandEncoder>, const GrSwizzle&, const GrXferProcessor&);
void setDepthStencilState(id<MTLRenderCommandEncoder> renderCmdEncoder);
struct SamplerBindings {
GrMtlSampler* fSampler;
id<MTLTexture> fTexture;
SamplerBindings(GrSamplerState state, GrTexture* texture, GrMtlGpu*);
GrMtlGpu* fGpu;
id<MTLRenderPipelineState> fPipelineState;
MTLPixelFormat fPixelFormat;
RenderTargetState fRenderTargetState;
GrGLSLBuiltinUniformHandles fBuiltinUniformHandles;
GrStencilSettings fStencil;
int fNumSamplers;
SkTArray<SamplerBindings> fSamplerBindings;
std::unique_ptr<GrGLSLPrimitiveProcessor> fGeometryProcessor;
std::unique_ptr<GrGLSLXferProcessor> fXferProcessor;
std::vector<std::unique_ptr<GrGLSLFragmentProcessor>> fFPImpls;
GrMtlPipelineStateDataManager fDataManager;