diff options
Diffstat (limited to 'progs')
| -rw-r--r-- | progs/tests/getteximage.c | 136 |
1 files changed, 86 insertions, 50 deletions
diff --git a/progs/tests/getteximage.c b/progs/tests/getteximage.c index efd77db60e..71f29b4ac8 100644 --- a/progs/tests/getteximage.c +++ b/progs/tests/getteximage.c @@ -15,7 +15,7 @@ static int Win; static void -TestGetTexImage(void) +TestGetTexImage(GLboolean npot) { GLuint iter; GLubyte *data = (GLubyte *) malloc(1024 * 1024 * 4); @@ -27,8 +27,8 @@ TestGetTexImage(void) for (iter = 0; iter < 8; iter++) { GLint p = (iter % 8) + 3; - GLint w = (1 << p); - GLint h = (1 << p); + GLint w = npot ? (p * 20) : (1 << p); + GLint h = npot ? (p * 10) : (1 << p); GLuint i; GLint level = 0; @@ -83,63 +83,94 @@ ColorsEqual(const GLubyte ref[4], const GLubyte act[4]) static void -TestGetTexImageRTT(void) +TestGetTexImageRTT(GLboolean npot) { GLuint iter; - GLuint fb, tex; - GLint w = 512; - GLint h = 256; - GLint level = 0; - - glGenTextures(1, &tex); - glGenFramebuffersEXT(1, &fb); - - glBindTexture(GL_TEXTURE_2D, tex); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, - GL_RGBA, GL_UNSIGNED_BYTE, NULL); - - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb); - glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, - GL_TEXTURE_2D, tex, level); printf("Render to texture + glGetTexImage:\n"); - printf(" Testing %d x %d tex image\n", w, h); + for (iter = 0; iter < 8; iter++) { - GLubyte color[4]; - GLubyte *data2 = (GLubyte *) malloc(w * h * 4); - GLuint i; - /* random clear color */ - for (i = 0; i < 4; i++) { - color[i] = rand() % 256; + GLuint fb, tex; + GLint w, h; + GLint level = 0; + + if (npot) { + w = 200 + iter * 40; + h = 200 + iter * 12; + } + else { + w = 4 << iter; + h = 4 << iter; } - glClearColor(color[0] / 255.0, - color[1] / 255.0, - color[2] / 255.0, - color[3] / 255.0); + glGenTextures(1, &tex); + glGenFramebuffersEXT(1, &fb); - glClear(GL_COLOR_BUFFER_BIT); + glBindTexture(GL_TEXTURE_2D, tex); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, + GL_RGBA, GL_UNSIGNED_BYTE, NULL); - /* get */ - glGetTexImage(GL_TEXTURE_2D, level, GL_RGBA, GL_UNSIGNED_BYTE, data2); + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb); + glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, + GL_TEXTURE_2D, tex, level); - /* compare */ - for (i = 0; i < w * h; i += 4) { - if (!ColorsEqual(color, data2 + i * 4)) { - printf("Render to texture failure!\n"); - abort(); + glViewport(0, 0, w, h); + + printf(" Testing %d x %d tex image\n", w, h); + { + static const GLubyte blue[4] = {0, 0, 255, 255}; + GLubyte color[4]; + GLubyte *data2 = (GLubyte *) malloc(w * h * 4); + GLuint i; + + /* random clear color */ + for (i = 0; i < 4; i++) { + color[i] = rand() % 256; + } + + glClearColor(color[0] / 255.0, + color[1] / 255.0, + color[2] / 255.0, + color[3] / 255.0); + + glClear(GL_COLOR_BUFFER_BIT); + + /* draw polygon over top half, in blue */ + glColor4ubv(blue); + glRectf(0, 0.5, 1.0, 1.0); + + /* get */ + glGetTexImage(GL_TEXTURE_2D, level, GL_RGBA, GL_UNSIGNED_BYTE, data2); + + /* compare */ + for (i = 0; i < w * h; i += 4) { + if (i < w * h / 2) { + /* lower half */ + if (!ColorsEqual(color, data2 + i * 4)) { + printf("Render to texture failure (expected clear color)!\n"); + abort(); + } + } + else { + /* upper half */ + if (!ColorsEqual(blue, data2 + i * 4)) { + printf("Render to texture failure (expected blue)!\n"); + abort(); + } + } } + + free(data2); } - free(data2); - } + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); + glDeleteFramebuffersEXT(1, &fb); + glDeleteTextures(1, &tex); - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - glDeleteFramebuffersEXT(1, &fb); - glDeleteTextures(1, &tex); + } printf("Passed\n"); } @@ -152,11 +183,16 @@ Draw(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - TestGetTexImage(); + TestGetTexImage(GL_FALSE); + if (glutExtensionSupported("GL_ARB_texture_non_power_of_two")) + TestGetTexImage(GL_TRUE); if (glutExtensionSupported("GL_EXT_framebuffer_object") || - glutExtensionSupported("GL_ARB_framebuffer_object")) - TestGetTexImageRTT(); + glutExtensionSupported("GL_ARB_framebuffer_object")) { + TestGetTexImageRTT(GL_FALSE); + if (glutExtensionSupported("GL_ARB_texture_non_power_of_two")) + TestGetTexImageRTT(GL_TRUE); + } glutDestroyWindow(Win); exit(0); @@ -171,10 +207,10 @@ Reshape(int width, int height) glViewport(0, 0, width, height); glMatrixMode(GL_PROJECTION); glLoadIdentity(); - glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0); + glOrtho(0, 1, 0, 1, -1, 1); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); - glTranslatef(0.0, 0.0, -15.0); + glTranslatef(0.0, 0.0, 0.0); } |