зеркало из https://github.com/AvaloniaUI/angle.git
Add swizzle tests.
Change-Id: If04bc249b9da8306896c89c28bb057c2cf4da511 Reviewed-on: https://chromium-review.googlesource.com/181771 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shannon Woods <shannonwoods@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>
This commit is contained in:
Geoff Lang
Родитель
d701ea12e5
Коммит
2c254d8f0e
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#include "ANGLETest.h"
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#include <vector>
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class SwizzleTest : public ANGLETest
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{
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protected:
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SwizzleTest()
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{
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setWindowWidth(128);
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setWindowHeight(128);
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setConfigRedBits(8);
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setConfigGreenBits(8);
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setConfigBlueBits(8);
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setConfigAlphaBits(8);
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setClientVersion(3);
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GLenum swizzles[] =
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{
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GL_RED,
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GL_GREEN,
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GL_BLUE,
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GL_ALPHA,
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GL_ZERO,
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GL_ONE,
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};
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for (int r = 0; r < 6; r++)
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{
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for (int g = 0; g < 6; g++)
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{
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for (int b = 0; b < 6; b++)
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{
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for (int a = 0; a < 6; a++)
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{
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swizzlePermutation permutation;
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permutation.swizzleRed = swizzles[r];
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permutation.swizzleGreen = swizzles[g];
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permutation.swizzleBlue = swizzles[b];
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permutation.swizzleAlpha = swizzles[a];
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mPermutations.push_back(permutation);
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}
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}
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}
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}
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}
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virtual void SetUp()
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{
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ANGLETest::SetUp();
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const std::string vertexShaderSource = SHADER_SOURCE
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(
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precision highp float;
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attribute vec4 position;
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varying vec2 texcoord;
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void main()
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{
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gl_Position = position;
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texcoord = (position.xy * 0.5) + 0.5;
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}
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);
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const std::string fragmentShaderSource = SHADER_SOURCE
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(
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precision highp float;
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uniform sampler2D tex;
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varying vec2 texcoord;
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void main()
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{
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gl_FragColor = texture2D(tex, texcoord);
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}
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);
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mProgram = compileProgram(vertexShaderSource, fragmentShaderSource);
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if (mProgram == 0)
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{
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FAIL() << "shader compilation failed.";
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}
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mTextureUniformLocation = glGetUniformLocation(mProgram, "tex");
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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}
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virtual void TearDown()
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{
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glDeleteProgram(mProgram);
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glDeleteTextures(1, &mTexture);
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ANGLETest::TearDown();
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}
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template <typename T>
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void init2DTexture(GLenum internalFormat, GLenum dataFormat, GLenum dataType, const T* data)
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{
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glGenTextures(1, &mTexture);
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glBindTexture(GL_TEXTURE_2D, mTexture);
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glTexStorage2D(GL_TEXTURE_2D, 1, internalFormat, 1, 1);
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glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 1, 1, dataFormat, dataType, data);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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}
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void init2DCompressedTexture(GLenum internalFormat, GLsizei width, GLsizei height, GLsizei dataSize, const GLubyte* data)
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{
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glGenTextures(1, &mTexture);
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glBindTexture(GL_TEXTURE_2D, mTexture);
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glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, width, height, 0, dataSize, data);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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}
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GLubyte getExpectedValue(GLenum swizzle, GLubyte unswizzled[4])
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{
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switch (swizzle)
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{
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case GL_RED: return unswizzled[0];
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case GL_GREEN: return unswizzled[1];
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case GL_BLUE: return unswizzled[2];
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case GL_ALPHA: return unswizzled[3];
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case GL_ZERO: return 0;
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case GL_ONE: return 255;
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default: return 0;
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}
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}
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void runTest2D()
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{
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glUseProgram(mProgram);
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glBindTexture(GL_TEXTURE_2D, mTexture);
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glUniform1i(mTextureUniformLocation, 0);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_RED);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_GREEN);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_BLUE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_ALPHA);
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glClear(GL_COLOR_BUFFER_BIT);
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drawQuad(mProgram, "position", 0.5f);
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GLubyte unswizzled[4];
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glReadPixels(0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &unswizzled);
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for (size_t i = 0; i < mPermutations.size(); i++)
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{
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const swizzlePermutation& permutation = mPermutations[i];
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, permutation.swizzleRed);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, permutation.swizzleGreen);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, permutation.swizzleBlue);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, permutation.swizzleAlpha);
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glClear(GL_COLOR_BUFFER_BIT);
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drawQuad(mProgram, "position", 0.5f);
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EXPECT_PIXEL_EQ(0, 0,
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getExpectedValue(permutation.swizzleRed, unswizzled),
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getExpectedValue(permutation.swizzleGreen, unswizzled),
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getExpectedValue(permutation.swizzleBlue, unswizzled),
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getExpectedValue(permutation.swizzleAlpha, unswizzled));
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}
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}
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GLuint mProgram;
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GLint mTextureUniformLocation;
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GLuint mTexture;
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struct swizzlePermutation
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{
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GLenum swizzleRed;
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GLenum swizzleGreen;
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GLenum swizzleBlue;
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GLenum swizzleAlpha;
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};
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std::vector<swizzlePermutation> mPermutations;
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};
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TEST_F(SwizzleTest, rgba8_2d)
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{
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GLubyte data[] = { 1, 64, 128, 200 };
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init2DTexture(GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, data);
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runTest2D();
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}
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TEST_F(SwizzleTest, rgb8_2d)
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{
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GLubyte data[] = { 77, 66, 55 };
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init2DTexture(GL_RGB8, GL_RGB, GL_UNSIGNED_BYTE, data);
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runTest2D();
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}
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TEST_F(SwizzleTest, rg8_2d)
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{
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GLubyte data[] = { 11, 99 };
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init2DTexture(GL_RG8, GL_RG, GL_UNSIGNED_BYTE, data);
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runTest2D();
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}
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TEST_F(SwizzleTest, r8_2d)
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{
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GLubyte data[] = { 2 };
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init2DTexture<GLubyte>(GL_R8, GL_RED, GL_UNSIGNED_BYTE, data);
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runTest2D();
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}
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TEST_F(SwizzleTest, rgba32f_2d)
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{
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GLfloat data[] = { 0.25f, 0.5f, 0.75f, 0.8f };
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init2DTexture(GL_RGBA32F, GL_RGBA, GL_FLOAT, data);
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runTest2D();
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}
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TEST_F(SwizzleTest, rgb32f_2d)
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{
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GLfloat data[] = { 0.1f, 0.2f, 0.3f };
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init2DTexture(GL_RGB32F, GL_RGB, GL_FLOAT, data);
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runTest2D();
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}
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TEST_F(SwizzleTest, rg32f_2d)
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{
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GLfloat data[] = { 0.9f, 0.1f };
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init2DTexture(GL_RG32F, GL_RG, GL_FLOAT, data);
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runTest2D();
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}
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TEST_F(SwizzleTest, r32f_2d)
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{
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GLfloat data[] = { 0.5f };
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init2DTexture(GL_R32F, GL_RED, GL_FLOAT, data);
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runTest2D();
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}
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TEST_F(SwizzleTest, d32f_2d)
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{
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GLfloat data[] = { 0.5f };
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init2DTexture(GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT, GL_FLOAT, data);
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runTest2D();
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}
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TEST_F(SwizzleTest, d16_2d)
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{
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GLushort data[] = { 0xFF };
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init2DTexture(GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, data);
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runTest2D();
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}
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TEST_F(SwizzleTest, d24_2d)
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{
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GLuint data[] = { 0xFFFF };
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init2DTexture(GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, data);
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runTest2D();
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}
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#include "media/pixel.inl"
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TEST_F(SwizzleTest, compressed_dxt_2d)
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{
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init2DCompressedTexture(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, pixel_0_width, pixel_0_height, pixel_0_size, pixel_0_data);
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runTest2D();
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}
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