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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 "include/core/SkBitmap.h"
- #include "src/gpu/GrDataUtils.h"
- #include "tests/Test.h"
- class GrSurfaceContext;
- class GrSurfaceProxy;
- typedef uint32_t GrColor;
- // Ensure that reading back from 'srcContext' as RGBA 8888 matches 'expectedPixelValues
- void test_read_pixels(skiatest::Reporter*, GrSurfaceContext* srcContext,
- uint32_t expectedPixelValues[], const char* testName);
- // See if trying to write RGBA 8888 pixels to 'dstContext' matches matches the
- // expectation ('expectedToWork')
- void test_write_pixels(skiatest::Reporter*, GrSurfaceContext* srcContext, bool expectedToWork,
- const char* testName);
- // Ensure that the pixels can be copied from 'proxy' viewed as colorType, to an RGBA 8888
- // destination (both texture-backed and rendertarget-backed).
- void test_copy_from_surface(skiatest::Reporter*, GrContext*, GrSurfaceProxy* proxy,
- GrColorType colorType, uint32_t expectedPixelValues[],
- const char* testName);
- // Fills data with a red-green gradient
- void fill_pixel_data(int width, int height, GrColor* data);
- // Create a solid colored backend texture
- bool create_backend_texture(GrContext*, GrBackendTexture* backendTex,
- const SkImageInfo& ii, const SkColor4f& color,
- GrMipMapped, GrRenderable);
- void delete_backend_texture(GrContext*, const GrBackendTexture& backendTex);
- // Checks srcBuffer and dstBuffer contain the same colors
- bool does_full_buffer_contain_correct_color(const GrColor* srcBuffer, const GrColor* dstBuffer,
- int width, int height);
- // Encodes the bitmap into a data:/image/png;base64,... url suitable to view in a browser after
- // printing to a log. If false is returned, dst holds an error message instead of a URI.
- bool bitmap_to_base64_data_uri(const SkBitmap& bitmap, SkString* dst);
- /** Used by compare_pixels. */
- using ComparePixmapsErrorReporter = void(int x, int y, const float diffs[4]);
- /**
- * Compares pixels pointed to by 'a' with 'infoA' and rowBytesA to pixels pointed to by 'b' with
- * 'infoB' and 'rowBytesB'.
- *
- * If the infos have different dimensions error is called with negative coordinate values and
- * zero diffs and no comparisons are made.
- *
- * Before comparison pixels are converted to a common color type, alpha type, and color space.
- * The color type is always 32 bit float. The alpha type is premul if one of 'infoA' and 'infoB' is
- * premul and the other is unpremul. The color space is linear sRGB if 'infoA' and 'infoB' have
- * different colorspaces, otherwise their common color space is used.
- *
- * 'tolRGBA' expresses the allowed difference between pixels in the comparison space per channel. If
- * pixel components differ more than by 'tolRGBA' in absolute value in any channel then 'error' is
- * called with the coordinate and difference in the comparison space (B - A).
- *
- * The function quits after a single error is reported and returns false if 'error' was called and
- * true otherwise.
- */
- bool compare_pixels(const GrPixelInfo& infoA, const char* a, size_t rowBytesA,
- const GrPixelInfo& infoB, const char* b, size_t rowBytesB,
- const float tolRGBA[4], std::function<ComparePixmapsErrorReporter>& error);
- /** Convenience version of above that takes SkPixmap inputs. */
- bool compare_pixels(const SkPixmap& a, const SkPixmap& b, const float tolRGBA[4],
- std::function<ComparePixmapsErrorReporter>& error);
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