bool GrDrawTarget::checkDraw(const GrPipelineBuilder& pipelineBuilder,
const GrGeometryProcessor* gp,
GrPrimitiveType type,
int startVertex,
int startIndex,
int vertexCount,
int indexCount) const {
#ifdef SK_DEBUG
const GeometrySrcState& geoSrc = fGeoSrcStateStack.back();
int maxVertex = startVertex + vertexCount;
int maxValidVertex;
switch (geoSrc.fVertexSrc) {
case kNone_GeometrySrcType:
SkFAIL("Attempting to draw without vertex src.");
case kReserved_GeometrySrcType: // fallthrough
maxValidVertex = geoSrc.fVertexCount;
break;
case kBuffer_GeometrySrcType:
maxValidVertex = static_cast<int>(geoSrc.fVertexBuffer->gpuMemorySize() /
geoSrc.fVertexSize);
break;
}
if (maxVertex > maxValidVertex) {
SkFAIL("Drawing outside valid vertex range.");
}
if (indexCount > 0) {
int maxIndex = startIndex + indexCount;
int maxValidIndex;
switch (geoSrc.fIndexSrc) {
case kNone_GeometrySrcType:
SkFAIL("Attempting to draw indexed geom without index src.");
case kReserved_GeometrySrcType: // fallthrough
maxValidIndex = geoSrc.fIndexCount;
break;
case kBuffer_GeometrySrcType:
maxValidIndex = static_cast<int>(geoSrc.fIndexBuffer->gpuMemorySize() /
sizeof(uint16_t));
break;
}
if (maxIndex > maxValidIndex) {
SkFAIL("Index reads outside valid index range.");
}
}
SkASSERT(pipelineBuilder.getRenderTarget());
if (gp) {
int numTextures = gp->numTextures();
for (int t = 0; t < numTextures; ++t) {
GrTexture* texture = gp->texture(t);
SkASSERT(texture->asRenderTarget() != pipelineBuilder.getRenderTarget());
}
}
for (int s = 0; s < pipelineBuilder.numColorFragmentStages(); ++s) {
const GrProcessor* effect = pipelineBuilder.getColorFragmentStage(s).processor();
int numTextures = effect->numTextures();
for (int t = 0; t < numTextures; ++t) {
GrTexture* texture = effect->texture(t);
SkASSERT(texture->asRenderTarget() != pipelineBuilder.getRenderTarget());
}
}
for (int s = 0; s < pipelineBuilder.numCoverageFragmentStages(); ++s) {
const GrProcessor* effect = pipelineBuilder.getCoverageFragmentStage(s).processor();
int numTextures = effect->numTextures();
for (int t = 0; t < numTextures; ++t) {
GrTexture* texture = effect->texture(t);
SkASSERT(texture->asRenderTarget() != pipelineBuilder.getRenderTarget());
}
}
#endif
if (NULL == pipelineBuilder.getRenderTarget()) {
return false;
}
return true;
}
