TEST_P(CopyTexImageTest, SubImageRGBToL)
{
// TODO (geofflang): Figure out why CopyTex[Sub]Image doesn't work with
// RGB->L on older Intel chips
if (isIntel() && getPlatformRenderer() == EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE)
{
std::cout << "Test skipped on Intel OpenGL." << std::endl;
return;
}
GLfloat color0[] = {
0.25f, 1.0f, 0.75f, 0.5f,
};
GLuint fbo0 = createFramebuffer(GL_RGB, GL_UNSIGNED_BYTE, color0);
GLuint tex = createTextureFromCopyTexImage(fbo0, GL_LUMINANCE);
GLfloat color1[] = {
0.5f, 0.25f, 1.0f, 0.75f,
};
GLuint fbo1 = createFramebuffer(GL_RGB, GL_UNSIGNED_BYTE, color1);
copyTextureWithCopyTexSubImage(fbo1, tex, 2, 4, 5, 6, 8, 8);
GLubyte expected0[] = {
64, 64, 64, 255,
};
verifyResults(tex, expected0, 0, 0);
GLubyte expected1[] = {
127, 127, 127, 255,
};
verifyResults(tex, expected1, 7, 7);
}
TEST_P(CopyTexImageTest, RGBAToA)
{
GLfloat color[] = {
0.25f, 1.0f, 0.75f, 0.5f,
};
GLuint fbo = createFramebuffer(GL_RGBA, GL_UNSIGNED_BYTE, color);
GLuint tex = createTextureFromCopyTexImage(fbo, GL_ALPHA);
GLubyte expected[] = {
0, 0, 0, 127,
};
verifyResults(tex, expected, 0, 0);
}
TEST_P(CopyTexImageTest, RGBToL)
{
GLfloat color[] = {
0.25f, 1.0f, 0.75f, 0.5f,
};
GLuint fbo = createFramebuffer(GL_RGB, GL_UNSIGNED_BYTE, color);
GLuint tex = createTextureFromCopyTexImage(fbo, GL_LUMINANCE);
GLubyte expected[] = {
64, 64, 64, 255,
};
verifyResults(tex, expected, 0, 0);
}
// The test verifies that glCopyTexSubImage2D generates a GL_INVALID_OPERATION error
// when the read buffer is GL_NONE.
// Reference: GLES 3.0.4, Section 3.8.5 Alternate Texture Image Specification Commands
TEST_P(CopyTexImageTestES3, ReadBufferIsNone)
{
GLfloat color[] = {
0.25f, 1.0f, 0.75f, 0.5f,
};
GLuint fbo = createFramebuffer(GL_RGBA, GL_UNSIGNED_BYTE, color);
GLuint tex = createTextureFromCopyTexImage(fbo, GL_RGBA);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glBindTexture(GL_TEXTURE_2D, tex);
glReadBuffer(GL_NONE);
EXPECT_GL_NO_ERROR();
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, 4, 4);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glDeleteFramebuffers(1, &fbo);
glDeleteTextures(1, &tex);
}
TEST_P(CopyTexImageTest, SubImageRGBToL)
{
GLfloat color0[] = {
0.25f, 1.0f, 0.75f, 0.5f,
};
GLuint fbo0 = createFramebuffer(GL_RGB, GL_UNSIGNED_BYTE, color0);
GLuint tex = createTextureFromCopyTexImage(fbo0, GL_LUMINANCE);
GLfloat color1[] = {
0.5f, 0.25f, 1.0f, 0.75f,
};
GLuint fbo1 = createFramebuffer(GL_RGB, GL_UNSIGNED_BYTE, color1);
copyTextureWithCopyTexSubImage(fbo1, tex, 2, 4, 5, 6, 8, 8);
GLubyte expected0[] = {
64, 64, 64, 255,
};
verifyResults(tex, expected0, 0, 0);
GLubyte expected1[] = {
127, 127, 127, 255,
};
verifyResults(tex, expected1, 7, 7);
}