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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "GrDrawContext.h"
#include "gl/GrGLGpu.h"
#include "gl/GrGLUtil.h"
#include "gl/SkGLContext.h"
static void test_read_pixels(skiatest::Reporter* reporter, GrContext* context,
GrTexture* rectangleTexture, uint32_t expectedPixelValues[]) {
int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
SkAutoTMalloc<uint32_t> pixels(pixelCnt);
memset(pixels.get(), 0, sizeof(uint32_t)*pixelCnt);
bool read = rectangleTexture->readPixels(0, 0, rectangleTexture->width(),
rectangleTexture->height(), kRGBA_8888_GrPixelConfig,
pixels.get());
if (!read) {
ERRORF(reporter, "Error reading rectangle texture.");
}
for (int i = 0; i < pixelCnt; ++i) {
if (pixels.get()[i] != expectedPixelValues[i]) {
ERRORF(reporter, "Error, rectangle texture pixel value %d should be 0x%08x,"
" got 0x%08x.", i, expectedPixelValues[i], pixels.get()[i]);
break;
}
}
}
static void test_write_pixels(skiatest::Reporter* reporter, GrContext* context,
GrTexture* rectangleTexture) {
int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
SkAutoTMalloc<uint32_t> pixels(pixelCnt);
for (int y = 0; y < rectangleTexture->width(); ++y) {
for (int x = 0; x < rectangleTexture->height(); ++x) {
pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(x, y, x + y, x * y);
}
}
bool write = rectangleTexture->writePixels(0, 0, rectangleTexture->width(),
rectangleTexture->height(), kRGBA_8888_GrPixelConfig,
pixels.get());
if (!write) {
ERRORF(reporter, "Error writing to rectangle texture.");
}
test_read_pixels(reporter, context, rectangleTexture, pixels.get());
}
static void test_copy_surface_src(skiatest::Reporter* reporter, GrContext* context,
GrTexture* rectangleTexture, uint32_t expectedPixelValues[]) {
GrSurfaceDesc copyDstDesc;
copyDstDesc.fConfig = kRGBA_8888_GrPixelConfig;
copyDstDesc.fWidth = rectangleTexture->width();
copyDstDesc.fHeight = rectangleTexture->height();
copyDstDesc.fFlags = kRenderTarget_GrSurfaceFlag;
SkAutoTUnref<GrTexture> dst(context->textureProvider()->createTexture(copyDstDesc, true));
context->copySurface(dst, rectangleTexture);
test_read_pixels(reporter, context, dst, expectedPixelValues);
}
static void test_copy_surface_dst(skiatest::Reporter* reporter, GrContext* context,
GrTexture* rectangleTexture) {
int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
SkAutoTMalloc<uint32_t> pixels(pixelCnt);
for (int y = 0; y < rectangleTexture->width(); ++y) {
for (int x = 0; x < rectangleTexture->height(); ++x) {
pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(y, x, x * y, x *+ y);
}
}
GrSurfaceDesc copySrcDesc;
copySrcDesc.fConfig = kRGBA_8888_GrPixelConfig;
copySrcDesc.fWidth = rectangleTexture->width();
copySrcDesc.fHeight = rectangleTexture->height();
copySrcDesc.fFlags = kRenderTarget_GrSurfaceFlag;
SkAutoTUnref<GrTexture> src(context->textureProvider()->createTexture(copySrcDesc, true,
pixels.get(), 0));
context->copySurface(rectangleTexture, src);
test_read_pixels(reporter, context, rectangleTexture, pixels.get());
}
static void test_clear(skiatest::Reporter* reporter, GrContext* context,
GrTexture* rectangleTexture) {
if (rectangleTexture->asRenderTarget()) {
SkAutoTUnref<GrDrawContext> dc(context->drawContext(rectangleTexture->asRenderTarget()));
if (!dc) {
ERRORF(reporter, "Could not get GrDrawContext for rectangle texture.");
return;
}
// Clear the whole thing.
GrColor color0 = GrColorPackRGBA(0xA, 0xB, 0xC, 0xD);
dc->clear(nullptr, color0, false);
int w = rectangleTexture->width();
int h = rectangleTexture->height();
int pixelCnt = w * h;
SkAutoTMalloc<uint32_t> expectedPixels(pixelCnt);
// The clear color is a GrColor, our readback is to kRGBA_8888, which may be different.
uint32_t expectedColor0 = 0;
uint8_t* expectedBytes0 = SkTCast<uint8_t*>(&expectedColor0);
expectedBytes0[0] = GrColorUnpackR(color0);
expectedBytes0[1] = GrColorUnpackG(color0);
expectedBytes0[2] = GrColorUnpackB(color0);
expectedBytes0[3] = GrColorUnpackA(color0);
for (int i = 0; i < rectangleTexture->width() * rectangleTexture->height(); ++i) {
expectedPixels.get()[i] = expectedColor0;
}
// Clear the the top to a different color.
GrColor color1 = GrColorPackRGBA(0x1, 0x2, 0x3, 0x4);
SkIRect rect = SkIRect::MakeWH(w, h/2);
dc->clear(&rect, color1, false);
uint32_t expectedColor1 = 0;
uint8_t* expectedBytes1 = SkTCast<uint8_t*>(&expectedColor1);
expectedBytes1[0] = GrColorUnpackR(color1);
expectedBytes1[1] = GrColorUnpackG(color1);
expectedBytes1[2] = GrColorUnpackB(color1);
expectedBytes1[3] = GrColorUnpackA(color1);
for (int y = 0; y < h/2; ++y) {
for (int x = 0; x < w; ++x) {
expectedPixels.get()[y * h + x] = expectedColor1;
}
}
test_read_pixels(reporter, context, rectangleTexture, expectedPixels.get());
}
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(RectangleTexture, reporter, context, glContext) {
static const int kWidth = 13;
static const int kHeight = 13;
GrColor pixels[kWidth * kHeight];
for (int y = 0; y < kHeight; ++y) {
for (int x = 0; x < kWidth; ++x) {
pixels[y * kWidth + x] = y * kWidth + x;
}
}
for (int origin = 0; origin < 2; ++origin) {
GrGLuint rectTexID = glContext->createTextureRectangle(kWidth, kHeight, GR_GL_RGBA,
GR_GL_RGBA, GR_GL_UNSIGNED_BYTE,
pixels);
if (!rectTexID) {
return;
}
// Let GrContext know that we messed with the GL context directly.
context->resetContext();
// Wrap the rectangle texture ID in a GrTexture
GrGLTextureInfo rectangleInfo;
rectangleInfo.fID = rectTexID;
rectangleInfo.fTarget = GR_GL_TEXTURE_RECTANGLE;
GrBackendTextureDesc rectangleDesc;
rectangleDesc.fFlags = kRenderTarget_GrBackendTextureFlag;
rectangleDesc.fConfig = kRGBA_8888_GrPixelConfig;
rectangleDesc.fWidth = kWidth;
rectangleDesc.fHeight = kHeight;
rectangleDesc.fOrigin = origin ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin;
rectangleDesc.fTextureHandle = reinterpret_cast<GrBackendObject>(&rectangleInfo);
GrColor refPixels[kWidth * kHeight];
bool flipRef = rectangleDesc.fOrigin == kBottomLeft_GrSurfaceOrigin;
for (int y = 0; y < kHeight; ++y) {
for (int x = 0; x < kWidth; ++x) {
int y0 = flipRef ? kHeight - y - 1 : y;
refPixels[y * kWidth + x] = pixels[y0 * kWidth + x];
}
}
SkAutoTUnref<GrTexture> rectangleTexture(
context->textureProvider()->wrapBackendTexture(rectangleDesc));
if (!rectangleTexture) {
ERRORF(reporter, "Error wrapping rectangle texture in GrTexture.");
GR_GL_CALL(glContext->gl(), DeleteTextures(1, &rectTexID));
continue;
}
test_read_pixels(reporter, context, rectangleTexture, refPixels);
test_copy_surface_src(reporter, context, rectangleTexture, refPixels);
test_copy_surface_dst(reporter, context, rectangleTexture);
test_write_pixels(reporter, context, rectangleTexture);
test_clear(reporter, context, rectangleTexture);
GR_GL_CALL(glContext->gl(), DeleteTextures(1, &rectTexID));
}
}
#endif
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