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427 lines
16 KiB
427 lines
16 KiB
/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkTypes.h"
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#include "Test.h"
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#include <array>
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#include <vector>
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#include "GrCaps.h"
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#include "GrContext.h"
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#include "GrContextPriv.h"
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#include "GrGeometryProcessor.h"
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#include "GrGpuCommandBuffer.h"
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#include "GrMemoryPool.h"
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#include "GrOpFlushState.h"
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#include "GrRenderTargetContext.h"
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#include "GrRenderTargetContextPriv.h"
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#include "GrResourceKey.h"
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#include "GrResourceProvider.h"
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#include "SkBitmap.h"
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#include "SkMakeUnique.h"
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#include "glsl/GrGLSLFragmentShaderBuilder.h"
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#include "glsl/GrGLSLGeometryProcessor.h"
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#include "glsl/GrGLSLVarying.h"
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#include "glsl/GrGLSLVertexGeoBuilder.h"
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GR_DECLARE_STATIC_UNIQUE_KEY(gIndexBufferKey);
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static constexpr int kBoxSize = 2;
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static constexpr int kBoxCountY = 8;
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static constexpr int kBoxCountX = 8;
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static constexpr int kBoxCount = kBoxCountY * kBoxCountX;
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static constexpr int kImageWidth = kBoxCountY * kBoxSize;
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static constexpr int kImageHeight = kBoxCountX * kBoxSize;
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static constexpr int kIndexPatternRepeatCount = 3;
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constexpr uint16_t kIndexPattern[6] = {0, 1, 2, 1, 2, 3};
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class DrawMeshHelper {
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public:
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DrawMeshHelper(GrOpFlushState* state) : fState(state) {}
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sk_sp<const GrBuffer> getIndexBuffer();
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template<typename T> sk_sp<const GrBuffer> makeVertexBuffer(const SkTArray<T>& data) {
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return this->makeVertexBuffer(data.begin(), data.count());
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}
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template<typename T> sk_sp<const GrBuffer> makeVertexBuffer(const std::vector<T>& data) {
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return this->makeVertexBuffer(data.data(), data.size());
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}
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template<typename T> sk_sp<const GrBuffer> makeVertexBuffer(const T* data, int count);
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void drawMesh(const GrMesh& mesh);
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private:
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GrOpFlushState* fState;
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};
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struct Box {
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float fX, fY;
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GrColor fColor;
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* This is a GPU-backend specific test. It tries to test all possible usecases of GrMesh. The test
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* works by drawing checkerboards of colored boxes, reading back the pixels, and comparing with
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* expected results. The boxes are drawn on integer boundaries and the (opaque) colors are chosen
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* from the set (r,g,b) = (0,255)^3, so the GPU renderings ought to produce exact matches.
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*/
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static void run_test(GrContext* context, const char* testName, skiatest::Reporter*,
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const sk_sp<GrRenderTargetContext>&, const SkBitmap& gold,
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std::function<void(DrawMeshHelper*)> testFn);
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DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrMeshTest, reporter, ctxInfo) {
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GrContext* context = ctxInfo.grContext();
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const GrBackendFormat format =
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context->contextPriv().caps()->getBackendFormatFromColorType(kRGBA_8888_SkColorType);
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sk_sp<GrRenderTargetContext> rtc(context->contextPriv().makeDeferredRenderTargetContext(
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format, SkBackingFit::kExact, kImageWidth, kImageHeight, kRGBA_8888_GrPixelConfig,
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nullptr));
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if (!rtc) {
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ERRORF(reporter, "could not create render target context.");
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return;
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}
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SkTArray<Box> boxes;
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SkTArray<std::array<Box, 4>> vertexData;
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SkBitmap gold;
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// ---- setup ----------
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SkPaint paint;
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paint.setBlendMode(SkBlendMode::kSrc);
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gold.allocN32Pixels(kImageWidth, kImageHeight);
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SkCanvas goldCanvas(gold);
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for (int y = 0; y < kBoxCountY; ++y) {
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for (int x = 0; x < kBoxCountX; ++x) {
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int c = y + x;
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int rgb[3] = {-(c & 1) & 0xff, -((c >> 1) & 1) & 0xff, -((c >> 2) & 1) & 0xff};
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const Box box = boxes.push_back() = {
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float(x * kBoxSize),
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float(y * kBoxSize),
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GrColorPackRGBA(rgb[0], rgb[1], rgb[2], 255)
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};
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std::array<Box, 4>& boxVertices = vertexData.push_back();
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for (int i = 0; i < 4; ++i) {
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boxVertices[i] = {
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box.fX + (i / 2) * kBoxSize,
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box.fY + (i % 2) * kBoxSize,
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box.fColor
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};
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}
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paint.setARGB(255, rgb[0], rgb[1], rgb[2]);
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goldCanvas.drawRect(SkRect::MakeXYWH(box.fX, box.fY, kBoxSize, kBoxSize), paint);
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}
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}
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goldCanvas.flush();
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// ---- tests ----------
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#define VALIDATE(buff) \
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do { \
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if (!buff) { \
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ERRORF(reporter, #buff " is null."); \
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return; \
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} \
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} while (0)
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run_test(context, "setNonIndexedNonInstanced", reporter, rtc, gold,
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[&](DrawMeshHelper* helper) {
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SkTArray<Box> expandedVertexData;
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for (int i = 0; i < kBoxCount; ++i) {
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for (int j = 0; j < 6; ++j) {
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expandedVertexData.push_back(vertexData[i][kIndexPattern[j]]);
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}
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}
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// Draw boxes one line at a time to exercise base vertex.
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auto vbuff = helper->makeVertexBuffer(expandedVertexData);
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VALIDATE(vbuff);
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for (int y = 0; y < kBoxCountY; ++y) {
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GrMesh mesh(GrPrimitiveType::kTriangles);
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mesh.setNonIndexedNonInstanced(kBoxCountX * 6);
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mesh.setVertexData(vbuff, y * kBoxCountX * 6);
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helper->drawMesh(mesh);
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}
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});
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run_test(context, "setIndexed", reporter, rtc, gold, [&](DrawMeshHelper* helper) {
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auto ibuff = helper->getIndexBuffer();
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VALIDATE(ibuff);
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auto vbuff = helper->makeVertexBuffer(vertexData);
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VALIDATE(vbuff);
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int baseRepetition = 0;
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int i = 0;
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// Start at various repetitions within the patterned index buffer to exercise base index.
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while (i < kBoxCount) {
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GR_STATIC_ASSERT(kIndexPatternRepeatCount >= 3);
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int repetitionCount = SkTMin(3 - baseRepetition, kBoxCount - i);
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GrMesh mesh(GrPrimitiveType::kTriangles);
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mesh.setIndexed(ibuff, repetitionCount * 6, baseRepetition * 6, baseRepetition * 4,
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(baseRepetition + repetitionCount) * 4 - 1, GrPrimitiveRestart::kNo);
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mesh.setVertexData(vbuff, (i - baseRepetition) * 4);
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helper->drawMesh(mesh);
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baseRepetition = (baseRepetition + 1) % 3;
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i += repetitionCount;
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}
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});
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run_test(context, "setIndexedPatterned", reporter, rtc, gold, [&](DrawMeshHelper* helper) {
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auto ibuff = helper->getIndexBuffer();
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VALIDATE(ibuff);
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auto vbuff = helper->makeVertexBuffer(vertexData);
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VALIDATE(vbuff);
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// Draw boxes one line at a time to exercise base vertex. setIndexedPatterned does not
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// support a base index.
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for (int y = 0; y < kBoxCountY; ++y) {
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GrMesh mesh(GrPrimitiveType::kTriangles);
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mesh.setIndexedPatterned(ibuff, 6, 4, kBoxCountX, kIndexPatternRepeatCount);
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mesh.setVertexData(vbuff, y * kBoxCountX * 4);
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helper->drawMesh(mesh);
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}
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});
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for (bool indexed : {false, true}) {
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if (!context->contextPriv().caps()->instanceAttribSupport()) {
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break;
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}
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run_test(context, indexed ? "setIndexedInstanced" : "setInstanced",
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reporter, rtc, gold, [&](DrawMeshHelper* helper) {
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auto idxbuff = indexed ? helper->getIndexBuffer() : nullptr;
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auto instbuff = helper->makeVertexBuffer(boxes);
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VALIDATE(instbuff);
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auto vbuff = helper->makeVertexBuffer(std::vector<float>{0,0, 0,1, 1,0, 1,1});
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VALIDATE(vbuff);
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auto vbuff2 = helper->makeVertexBuffer( // for testing base vertex.
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std::vector<float>{-1,-1, -1,-1, 0,0, 0,1, 1,0, 1,1});
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VALIDATE(vbuff2);
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// Draw boxes one line at a time to exercise base instance, base vertex, and null vertex
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// buffer. setIndexedInstanced intentionally does not support a base index.
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for (int y = 0; y < kBoxCountY; ++y) {
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GrMesh mesh(indexed ? GrPrimitiveType::kTriangles
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: GrPrimitiveType::kTriangleStrip);
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if (indexed) {
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VALIDATE(idxbuff);
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mesh.setIndexedInstanced(idxbuff, 6, instbuff, kBoxCountX, y * kBoxCountX,
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GrPrimitiveRestart::kNo);
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} else {
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mesh.setInstanced(instbuff, kBoxCountX, y * kBoxCountX, 4);
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}
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switch (y % 3) {
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case 0:
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if (context->contextPriv().caps()->shaderCaps()->vertexIDSupport()) {
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if (y % 2) {
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// We don't need this call because it's the initial state of GrMesh.
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mesh.setVertexData(nullptr);
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}
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break;
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}
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// Fallthru.
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case 1:
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mesh.setVertexData(vbuff);
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break;
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case 2:
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mesh.setVertexData(vbuff2, 2);
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break;
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}
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helper->drawMesh(mesh);
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}
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});
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class GrMeshTestOp : public GrDrawOp {
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public:
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DEFINE_OP_CLASS_ID
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static std::unique_ptr<GrDrawOp> Make(GrContext* context,
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std::function<void(DrawMeshHelper*)> testFn) {
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GrOpMemoryPool* pool = context->contextPriv().opMemoryPool();
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return pool->allocate<GrMeshTestOp>(testFn);
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}
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private:
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friend class GrOpMemoryPool; // for ctor
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GrMeshTestOp(std::function<void(DrawMeshHelper*)> testFn)
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: INHERITED(ClassID())
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, fTestFn(testFn) {
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this->setBounds(SkRect::MakeIWH(kImageWidth, kImageHeight),
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HasAABloat::kNo, IsZeroArea::kNo);
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}
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const char* name() const override { return "GrMeshTestOp"; }
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FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; }
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GrProcessorSet::Analysis finalize(const GrCaps&, const GrAppliedClip*) override {
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return GrProcessorSet::EmptySetAnalysis();
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}
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void onPrepare(GrOpFlushState*) override {}
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void onExecute(GrOpFlushState* state, const SkRect& chainBounds) override {
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DrawMeshHelper helper(state);
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fTestFn(&helper);
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}
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std::function<void(DrawMeshHelper*)> fTestFn;
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typedef GrDrawOp INHERITED;
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};
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class GrMeshTestProcessor : public GrGeometryProcessor {
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public:
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GrMeshTestProcessor(bool instanced, bool hasVertexBuffer)
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: INHERITED(kGrMeshTestProcessor_ClassID) {
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if (instanced) {
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fInstanceLocation = {"location", kFloat2_GrVertexAttribType, kHalf2_GrSLType};
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fInstanceColor = {"color", kUByte4_norm_GrVertexAttribType, kHalf4_GrSLType};
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this->setInstanceAttributes(&fInstanceLocation, 2);
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if (hasVertexBuffer) {
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fVertexPosition = {"vertex", kFloat2_GrVertexAttribType, kHalf2_GrSLType};
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this->setVertexAttributes(&fVertexPosition, 1);
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}
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} else {
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fVertexPosition = {"vertex", kFloat2_GrVertexAttribType, kHalf2_GrSLType};
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fVertexColor = {"color", kUByte4_norm_GrVertexAttribType, kHalf4_GrSLType};
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this->setVertexAttributes(&fVertexPosition, 2);
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}
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}
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const char* name() const override { return "GrMeshTest Processor"; }
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const Attribute& inColor() const {
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return fVertexColor.isInitialized() ? fVertexColor : fInstanceColor;
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}
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void getGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder* b) const final {
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b->add32(fInstanceLocation.isInitialized());
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b->add32(fVertexPosition.isInitialized());
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}
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GrGLSLPrimitiveProcessor* createGLSLInstance(const GrShaderCaps&) const final;
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private:
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Attribute fVertexPosition;
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Attribute fVertexColor;
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Attribute fInstanceLocation;
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Attribute fInstanceColor;
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friend class GLSLMeshTestProcessor;
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typedef GrGeometryProcessor INHERITED;
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};
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class GLSLMeshTestProcessor : public GrGLSLGeometryProcessor {
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void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor&,
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FPCoordTransformIter&& transformIter) final {}
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void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) final {
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const GrMeshTestProcessor& mp = args.fGP.cast<GrMeshTestProcessor>();
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GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler;
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varyingHandler->emitAttributes(mp);
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varyingHandler->addPassThroughAttribute(mp.inColor(), args.fOutputColor);
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GrGLSLVertexBuilder* v = args.fVertBuilder;
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if (!mp.fInstanceLocation.isInitialized()) {
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v->codeAppendf("float2 vertex = %s;", mp.fVertexPosition.name());
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} else {
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if (mp.fVertexPosition.isInitialized()) {
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v->codeAppendf("float2 offset = %s;", mp.fVertexPosition.name());
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} else {
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v->codeAppend ("float2 offset = float2(sk_VertexID / 2, sk_VertexID % 2);");
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}
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v->codeAppendf("float2 vertex = %s + offset * %i;", mp.fInstanceLocation.name(),
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kBoxSize);
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}
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gpArgs->fPositionVar.set(kFloat2_GrSLType, "vertex");
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GrGLSLFPFragmentBuilder* f = args.fFragBuilder;
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f->codeAppendf("%s = half4(1);", args.fOutputCoverage);
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}
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};
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GrGLSLPrimitiveProcessor* GrMeshTestProcessor::createGLSLInstance(const GrShaderCaps&) const {
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return new GLSLMeshTestProcessor;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template<typename T>
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sk_sp<const GrBuffer> DrawMeshHelper::makeVertexBuffer(const T* data, int count) {
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return sk_sp<const GrBuffer>(
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fState->resourceProvider()->createBuffer(
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count * sizeof(T), kVertex_GrBufferType, kDynamic_GrAccessPattern,
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GrResourceProvider::Flags::kRequireGpuMemory, data));
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}
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sk_sp<const GrBuffer> DrawMeshHelper::getIndexBuffer() {
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GR_DEFINE_STATIC_UNIQUE_KEY(gIndexBufferKey);
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return fState->resourceProvider()->findOrCreatePatternedIndexBuffer(
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kIndexPattern, 6, kIndexPatternRepeatCount, 4, gIndexBufferKey);
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}
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void DrawMeshHelper::drawMesh(const GrMesh& mesh) {
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GrPipeline pipeline(GrScissorTest::kDisabled, SkBlendMode::kSrc);
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GrMeshTestProcessor mtp(mesh.isInstanced(), mesh.hasVertexData());
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fState->rtCommandBuffer()->draw(mtp, pipeline, nullptr, nullptr, &mesh, 1,
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SkRect::MakeIWH(kImageWidth, kImageHeight));
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}
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static void run_test(GrContext* context, const char* testName, skiatest::Reporter* reporter,
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const sk_sp<GrRenderTargetContext>& rtc, const SkBitmap& gold,
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std::function<void(DrawMeshHelper*)> testFn) {
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const int w = gold.width(), h = gold.height(), rowBytes = gold.rowBytes();
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const uint32_t* goldPx = reinterpret_cast<const uint32_t*>(gold.getPixels());
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if (h != rtc->height() || w != rtc->width()) {
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ERRORF(reporter, "[%s] expectation and rtc not compatible (?).", testName);
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return;
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}
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if (sizeof(uint32_t) * kImageWidth != gold.rowBytes()) {
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ERRORF(reporter, "unexpected row bytes in gold image.", testName);
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return;
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}
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SkAutoSTMalloc<kImageHeight * kImageWidth, uint32_t> resultPx(h * rowBytes);
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rtc->clear(nullptr, SkPMColor4f::FromBytes_RGBA(0xbaaaaaad),
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GrRenderTargetContext::CanClearFullscreen::kYes);
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rtc->priv().testingOnly_addDrawOp(GrMeshTestOp::Make(context, testFn));
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rtc->readPixels(gold.info(), resultPx, rowBytes, 0, 0, 0);
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for (int y = 0; y < h; ++y) {
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for (int x = 0; x < w; ++x) {
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uint32_t expected = goldPx[y * kImageWidth + x];
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uint32_t actual = resultPx[y * kImageWidth + x];
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if (expected != actual) {
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ERRORF(reporter, "[%s] pixel (%i,%i): got 0x%x expected 0x%x",
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testName, x, y, actual, expected);
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return;
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}
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}
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}
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}
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