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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkTypes.h"
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "GrColor.h"
#include "GrGeometryProcessor.h"
#include "GrGpuCommandBuffer.h"
#include "GrOpFlushState.h"
#include "GrRenderTargetContext.h"
#include "GrRenderTargetContextPriv.h"
#include "GrResourceProvider.h"
#include "SkMakeUnique.h"
#include "glsl/GrGLSLVertexGeoBuilder.h"
#include "glsl/GrGLSLFragmentShaderBuilder.h"
#include "glsl/GrGLSLGeometryProcessor.h"
#include "glsl/GrGLSLVarying.h"
/**
* This is a GPU-backend specific test for dynamic pipeline state. It draws boxes using dynamic
* scissor rectangles then reads back the result to verify a successful test.
*/
using ScissorState = GrPipeline::ScissorState;
static constexpr int kScreenSize = 6;
static constexpr int kNumMeshes = 4;
static constexpr int kScreenSplitX = kScreenSize/2;
static constexpr int kScreenSplitY = kScreenSize/2;
static const GrPipeline::DynamicState kDynamicStates[kNumMeshes] = {
{SkIRect::MakeLTRB(0, 0, kScreenSplitX, kScreenSplitY)},
{SkIRect::MakeLTRB(0, kScreenSplitY, kScreenSplitX, kScreenSize)},
{SkIRect::MakeLTRB(kScreenSplitX, 0, kScreenSize, kScreenSplitY)},
{SkIRect::MakeLTRB(kScreenSplitX, kScreenSplitY, kScreenSize, kScreenSize)},
};
static const GrColor kMeshColors[kNumMeshes] {
GrColorPackRGBA(255, 0, 0, 255),
GrColorPackRGBA(0, 255, 0, 255),
GrColorPackRGBA(0, 0, 255, 255),
GrColorPackRGBA(0, 0, 0, 255)
};
struct Vertex {
float fX;
float fY;
GrColor fColor;
};
class GrPipelineDynamicStateTestProcessor : public GrGeometryProcessor {
public:
GrPipelineDynamicStateTestProcessor()
: INHERITED(kGrPipelineDynamicStateTestProcessor_ClassID)
, fVertex(this->addVertexAttrib("vertex", kHalf2_GrVertexAttribType))
, fColor(this->addVertexAttrib("color", kUByte4_norm_GrVertexAttribType)) {}
const char* name() const override { return "GrPipelineDynamicStateTest Processor"; }
void getGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const final {}
GrGLSLPrimitiveProcessor* createGLSLInstance(const GrShaderCaps&) const final;
protected:
const Attribute& fVertex;
const Attribute& fColor;
friend class GLSLPipelineDynamicStateTestProcessor;
typedef GrGeometryProcessor INHERITED;
};
class GLSLPipelineDynamicStateTestProcessor : public GrGLSLGeometryProcessor {
void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor&,
FPCoordTransformIter&& transformIter) final {}
void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) final {
const GrPipelineDynamicStateTestProcessor& mp =
args.fGP.cast<GrPipelineDynamicStateTestProcessor>();
GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler;
varyingHandler->emitAttributes(mp);
varyingHandler->addPassThroughAttribute(&mp.fColor, args.fOutputColor);
GrGLSLVertexBuilder* v = args.fVertBuilder;
v->codeAppendf("float2 vertex = %s;", mp.fVertex.fName);
gpArgs->fPositionVar.set(kFloat2_GrSLType, "vertex");
GrGLSLPPFragmentBuilder* f = args.fFragBuilder;
f->codeAppendf("%s = half4(1);", args.fOutputCoverage);
}
};
GrGLSLPrimitiveProcessor*
GrPipelineDynamicStateTestProcessor::createGLSLInstance(const GrShaderCaps&) const {
return new GLSLPipelineDynamicStateTestProcessor;
}
class GrPipelineDynamicStateTestOp : public GrDrawOp {
public:
DEFINE_OP_CLASS_ID
GrPipelineDynamicStateTestOp(ScissorState scissorState, sk_sp<const GrBuffer> vbuff)
: INHERITED(ClassID())
, fScissorState(scissorState)
, fVertexBuffer(std::move(vbuff)) {
this->setBounds(SkRect::MakeIWH(kScreenSize, kScreenSize),
HasAABloat::kNo, IsZeroArea::kNo);
}
private:
const char* name() const override { return "GrPipelineDynamicStateTestOp"; }
FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; }
RequiresDstTexture finalize(const GrCaps&, const GrAppliedClip*,
GrPixelConfigIsClamped) override {
return RequiresDstTexture::kNo;
}
bool onCombineIfPossible(GrOp* other, const GrCaps& caps) override { return false; }
void onPrepare(GrOpFlushState*) override {}
void onExecute(GrOpFlushState* state) override {
GrRenderTargetProxy* proxy = state->drawOpArgs().fProxy;
GrPipeline pipeline(proxy, fScissorState, SkBlendMode::kSrc);
SkSTArray<kNumMeshes, GrMesh> meshes;
for (int i = 0; i < kNumMeshes; ++i) {
GrMesh& mesh = meshes.emplace_back(GrPrimitiveType::kTriangleStrip);
mesh.setNonIndexedNonInstanced(4);
mesh.setVertexData(fVertexBuffer.get(), 4 * i);
}
state->rtCommandBuffer()->draw(pipeline, GrPipelineDynamicStateTestProcessor(),
meshes.begin(), kDynamicStates, 4,
SkRect::MakeIWH(kScreenSize, kScreenSize));
}
ScissorState fScissorState;
const sk_sp<const GrBuffer> fVertexBuffer;
typedef GrDrawOp INHERITED;
};
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrPipelineDynamicStateTest, reporter, ctxInfo) {
GrContext* const context = ctxInfo.grContext();
GrResourceProvider* rp = context->resourceProvider();
sk_sp<GrRenderTargetContext> rtc(
context->makeDeferredRenderTargetContext(SkBackingFit::kExact, kScreenSize, kScreenSize,
kRGBA_8888_GrPixelConfig, nullptr));
if (!rtc) {
ERRORF(reporter, "could not create render target context.");
return;
}
constexpr float d = (float) kScreenSize;
Vertex vdata[kNumMeshes * 4] = {
{0, 0, kMeshColors[0]},
{0, d, kMeshColors[0]},
{d, 0, kMeshColors[0]},
{d, d, kMeshColors[0]},
{0, 0, kMeshColors[1]},
{0, d, kMeshColors[1]},
{d, 0, kMeshColors[1]},
{d, d, kMeshColors[1]},
{0, 0, kMeshColors[2]},
{0, d, kMeshColors[2]},
{d, 0, kMeshColors[2]},
{d, d, kMeshColors[2]},
{0, 0, kMeshColors[3]},
{0, d, kMeshColors[3]},
{d, 0, kMeshColors[3]},
{d, d, kMeshColors[3]}
};
sk_sp<const GrBuffer> vbuff(rp->createBuffer(sizeof(vdata), kVertex_GrBufferType,
kDynamic_GrAccessPattern,
GrResourceProvider::kNoPendingIO_Flag |
GrResourceProvider::kRequireGpuMemory_Flag,
vdata));
if (!vbuff) {
ERRORF(reporter, "vbuff is null.");
return;
}
uint32_t resultPx[kScreenSize * kScreenSize];
for (ScissorState scissorState : {ScissorState::kEnabled, ScissorState::kDisabled}) {
rtc->clear(nullptr, 0xbaaaaaad, GrRenderTargetContext::CanClearFullscreen::kYes);
rtc->priv().testingOnly_addDrawOp(
skstd::make_unique<GrPipelineDynamicStateTestOp>(scissorState, vbuff));
rtc->readPixels(SkImageInfo::Make(kScreenSize, kScreenSize,
kRGBA_8888_SkColorType, kPremul_SkAlphaType),
resultPx, 4 * kScreenSize, 0, 0, 0);
for (int y = 0; y < kScreenSize; ++y) {
for (int x = 0; x < kScreenSize; ++x) {
int expectedColorIdx;
if (ScissorState::kEnabled == scissorState) {
expectedColorIdx = (x < kScreenSplitX ? 0 : 2) + (y < kScreenSplitY ? 0 : 1);
} else {
expectedColorIdx = kNumMeshes - 1;
}
uint32_t expected = kMeshColors[expectedColorIdx];
uint32_t actual = resultPx[y * kScreenSize + x];
if (expected != actual) {
ERRORF(reporter, "[scissor=%s] pixel (%i,%i): got 0x%x expected 0x%x",
ScissorState::kEnabled == scissorState ? "enabled" : "disabled", x, y,
actual, expected);
return;
}
}
}
}
}
#endif
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