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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrGLProgram.h"
#include "GrAllocator.h"
#include "GrProcessor.h"
#include "GrCoordTransform.h"
#include "GrGLGeometryProcessor.h"
#include "GrGLProcessor.h"
#include "GrGLXferProcessor.h"
#include "GrGLGpu.h"
#include "GrGLPathRendering.h"
#include "GrGLShaderVar.h"
#include "GrGLSL.h"
#include "GrPipeline.h"
#include "GrXferProcessor.h"
#include "SkXfermode.h"
#define GL_CALL(X) GR_GL_CALL(fGpu->glInterface(), X)
#define GL_CALL_RET(R, X) GR_GL_CALL_RET(fGpu->glInterface(), R, X)
///////////////////////////////////////////////////////////////////////////////////////////////////
GrGLProgram::GrGLProgram(GrGLGpu* gpu,
const GrProgramDesc& desc,
const BuiltinUniformHandles& builtinUniforms,
GrGLuint programID,
const UniformInfoArray& uniforms,
GrGLInstalledGeoProc* geometryProcessor,
GrGLInstalledXferProc* xferProcessor,
GrGLInstalledFragProcs* fragmentProcessors)
: fColor(GrColor_ILLEGAL)
, fCoverage(0)
, fDstCopyTexUnit(-1)
, fBuiltinUniformHandles(builtinUniforms)
, fProgramID(programID)
, fGeometryProcessor(geometryProcessor)
, fXferProcessor(xferProcessor)
, fFragmentProcessors(SkRef(fragmentProcessors))
, fDesc(desc)
, fGpu(gpu)
, fProgramDataManager(gpu, uniforms) {
this->initSamplerUniforms();
}
GrGLProgram::~GrGLProgram() {
if (fProgramID) {
GL_CALL(DeleteProgram(fProgramID));
}
}
void GrGLProgram::abandon() {
fProgramID = 0;
}
void GrGLProgram::initSamplerUniforms() {
GL_CALL(UseProgram(fProgramID));
GrGLint texUnitIdx = 0;
this->initSamplers(fGeometryProcessor.get(), &texUnitIdx);
if (fXferProcessor.get()) {
this->initSamplers(fXferProcessor.get(), &texUnitIdx);
}
int numProcs = fFragmentProcessors->fProcs.count();
for (int i = 0; i < numProcs; i++) {
this->initSamplers(fFragmentProcessors->fProcs[i], &texUnitIdx);
}
}
template <class Proc>
void GrGLProgram::initSamplers(Proc* ip, int* texUnitIdx) {
SkTArray<typename Proc::Sampler, true>& samplers = ip->fSamplers;
int numSamplers = samplers.count();
for (int s = 0; s < numSamplers; ++s) {
SkASSERT(samplers[s].fUniform.isValid());
fProgramDataManager.setSampler(samplers[s].fUniform, *texUnitIdx);
samplers[s].fTextureUnit = (*texUnitIdx)++;
}
}
template <class Proc>
void GrGLProgram::bindTextures(const Proc* ip, const GrProcessor& processor) {
const SkTArray<typename Proc::Sampler, true>& samplers = ip->fSamplers;
int numSamplers = samplers.count();
SkASSERT(numSamplers == processor.numTextures());
for (int s = 0; s < numSamplers; ++s) {
SkASSERT(samplers[s].fTextureUnit >= 0);
const GrTextureAccess& textureAccess = processor.textureAccess(s);
fGpu->bindTexture(samplers[s].fTextureUnit,
textureAccess.getParams(),
static_cast<GrGLTexture*>(textureAccess.getTexture()));
}
}
///////////////////////////////////////////////////////////////////////////////
void GrGLProgram::setData(const GrPrimitiveProcessor& primProc, const GrPipeline& pipeline,
const GrBatchTracker& batchTracker) {
this->setRenderTargetState(primProc, pipeline);
// we set the textures, and uniforms for installed processors in a generic way, but subclasses
// of GLProgram determine how to set coord transforms
fGeometryProcessor->fGLProc->setData(fProgramDataManager, primProc, batchTracker);
this->bindTextures(fGeometryProcessor.get(), primProc);
const GrXferProcessor& xp = *pipeline.getXferProcessor();
fXferProcessor->fGLProc->setData(fProgramDataManager, xp);
this->bindTextures(fXferProcessor.get(), xp);
this->setFragmentData(primProc, pipeline);
// Some of GrGLProgram subclasses need to update state here
this->didSetData();
}
void GrGLProgram::setFragmentData(const GrPrimitiveProcessor& primProc,
const GrPipeline& pipeline) {
int numProcessors = fFragmentProcessors->fProcs.count();
for (int e = 0; e < numProcessors; ++e) {
const GrPendingFragmentStage& stage = pipeline.getFragmentStage(e);
const GrProcessor& processor = *stage.processor();
fFragmentProcessors->fProcs[e]->fGLProc->setData(fProgramDataManager, processor);
this->setTransformData(primProc,
stage,
e,
fFragmentProcessors->fProcs[e]);
this->bindTextures(fFragmentProcessors->fProcs[e], processor);
}
}
void GrGLProgram::setTransformData(const GrPrimitiveProcessor& primProc,
const GrPendingFragmentStage& processor,
int index,
GrGLInstalledFragProc* ip) {
GrGLGeometryProcessor* gp =
static_cast<GrGLGeometryProcessor*>(fGeometryProcessor.get()->fGLProc.get());
gp->setTransformData(primProc, fProgramDataManager, index,
processor.processor()->coordTransforms());
}
void GrGLProgram::setRenderTargetState(const GrPrimitiveProcessor& primProc,
const GrPipeline& pipeline) {
// Load the RT height uniform if it is needed to y-flip gl_FragCoord.
if (fBuiltinUniformHandles.fRTHeightUni.isValid() &&
fRenderTargetState.fRenderTargetSize.fHeight != pipeline.getRenderTarget()->height()) {
fProgramDataManager.set1f(fBuiltinUniformHandles.fRTHeightUni,
SkIntToScalar(pipeline.getRenderTarget()->height()));
}
// call subclasses to set the actual view matrix
this->onSetRenderTargetState(primProc, pipeline);
}
void GrGLProgram::onSetRenderTargetState(const GrPrimitiveProcessor&,
const GrPipeline& pipeline) {
const GrRenderTarget* rt = pipeline.getRenderTarget();
SkISize size;
size.set(rt->width(), rt->height());
if (fRenderTargetState.fRenderTargetOrigin != rt->origin() ||
fRenderTargetState.fRenderTargetSize != size) {
fRenderTargetState.fRenderTargetSize = size;
fRenderTargetState.fRenderTargetOrigin = rt->origin();
GrGLfloat rtAdjustmentVec[4];
fRenderTargetState.getRTAdjustmentVec(rtAdjustmentVec);
fProgramDataManager.set4fv(fBuiltinUniformHandles.fRTAdjustmentUni, 1, rtAdjustmentVec);
}
}
/////////////////////////////////////////////////////////////////////////////////////////
GrGLNvprProgram::GrGLNvprProgram(GrGLGpu* gpu,
const GrProgramDesc& desc,
const BuiltinUniformHandles& builtinUniforms,
GrGLuint programID,
const UniformInfoArray& uniforms,
GrGLInstalledGeoProc* primProc,
GrGLInstalledXferProc* xferProcessor,
GrGLInstalledFragProcs* fragmentProcessors)
: INHERITED(gpu, desc, builtinUniforms, programID, uniforms, primProc,
xferProcessor, fragmentProcessors) {
}
void GrGLNvprProgram::didSetData() {
GrGLPathProcessor* pathProc =
static_cast<GrGLPathProcessor*>(fGeometryProcessor.get()->fGLProc.get());
pathProc->didSetData(fGpu->glPathRendering());
}
void GrGLNvprProgram::setTransformData(const GrPrimitiveProcessor& primProc,
const GrPendingFragmentStage& proc,
int index,
GrGLInstalledFragProc* ip) {
GrGLPathProcessor* pathProc =
static_cast<GrGLPathProcessor*>(fGeometryProcessor.get()->fGLProc.get());
pathProc->setTransformData(primProc, index, proc.processor()->coordTransforms(),
fGpu->glPathRendering(), fProgramID);
}
void GrGLNvprProgram::onSetRenderTargetState(const GrPrimitiveProcessor& primProc,
const GrPipeline& pipeline) {
SkASSERT(!primProc.willUseGeoShader() && primProc.numAttribs() == 0);
const GrRenderTarget* rt = pipeline.getRenderTarget();
SkISize size;
size.set(rt->width(), rt->height());
fGpu->glPathRendering()->setProjectionMatrix(primProc.viewMatrix(),
size, rt->origin());
}
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