diff options
Diffstat (limited to 'progs/tests/fbotest3.c')
| -rw-r--r-- | progs/tests/fbotest3.c | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/progs/tests/fbotest3.c b/progs/tests/fbotest3.c deleted file mode 100644 index c176f82d2ba..00000000000 --- a/progs/tests/fbotest3.c +++ /dev/null @@ -1,231 +0,0 @@ -/* - * Test GL_EXT_framebuffer_object - * Like fbotest2.c but use a texture for the Z buffer / renderbuffer. - * Note: the Z texture is never resized so that limits what can be - * rendered if the window is resized. - * - * This tests a bug reported by Christoph Bumiller on 1 Feb 2010 - * on mesa3d-dev. - * - * XXX this should be made into a piglit test. - * - * Brian Paul - * 1 Feb 2010 - */ - - -#include <assert.h> -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#include <GL/glew.h> -#include <GL/glut.h> - - -static int Win = 0; -static int Width = 400, Height = 400; -static GLuint Tex = 0; -static GLuint MyFB, ColorRb, DepthRb; -static GLboolean Animate = GL_FALSE; -static GLfloat Rotation = 0.0; - - -static void -CheckError(int line) -{ - GLenum err = glGetError(); - if (err) { - printf("fbotest3: GL Error 0x%x at line %d\n", (int) err, line); - } -} - - -static void -Display( void ) -{ - GLubyte *buffer = malloc(Width * Height * 4); - GLenum status; - - CheckError(__LINE__); - - /* draw to user framebuffer */ - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, MyFB); - glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT); - glReadBuffer(GL_COLOR_ATTACHMENT0_EXT); - - status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); - if (status != GL_FRAMEBUFFER_COMPLETE_EXT) { - printf("fbotest3: Error: Framebuffer is incomplete!!!\n"); - } - - CheckError(__LINE__); - - glClearColor(0.5, 0.5, 1.0, 0.0); - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); - - glEnable(GL_DEPTH_TEST); - glEnable(GL_LIGHTING); - glEnable(GL_LIGHT0); - - glPushMatrix(); - glRotatef(30.0, 1, 0, 0); - glRotatef(Rotation, 0, 1, 0); - glutSolidTeapot(2.0); - glPopMatrix(); - - /* read from user framebuffer */ - glReadPixels(0, 0, Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer); - - /* draw to window */ - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - glDisable(GL_DEPTH_TEST); /* in case window has depth buffer */ - glWindowPos2iARB(0, 0); - glDrawPixels(Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer); - - free(buffer); - glutSwapBuffers(); - CheckError(__LINE__); -} - - -static void -Reshape( int width, int height ) -{ - float ar = (float) width / (float) height; - - glViewport( 0, 0, width, height ); - glMatrixMode( GL_PROJECTION ); - glLoadIdentity(); - glFrustum( -ar, ar, -1.0, 1.0, 5.0, 25.0 ); - - glMatrixMode( GL_MODELVIEW ); - glLoadIdentity(); - glTranslatef( 0.0, 0.0, -15.0 ); - - glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, ColorRb); - glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGB, width, height); - - Width = width; - Height = height; -} - - -static void -CleanUp(void) -{ - glDeleteFramebuffersEXT(1, &MyFB); - glDeleteRenderbuffersEXT(1, &ColorRb); - glDeleteRenderbuffersEXT(1, &DepthRb); - glDeleteTextures(1, &Tex); - assert(!glIsFramebufferEXT(MyFB)); - assert(!glIsRenderbufferEXT(ColorRb)); - assert(!glIsRenderbufferEXT(DepthRb)); - glutDestroyWindow(Win); - exit(0); -} - - -static void -Idle(void) -{ - Rotation = glutGet(GLUT_ELAPSED_TIME) * 0.1; - glutPostRedisplay(); -} - - -static void -Key( unsigned char key, int x, int y ) -{ - (void) x; - (void) y; - switch (key) { - case 'a': - Animate = !Animate; - if (Animate) - glutIdleFunc(Idle); - else - glutIdleFunc(NULL); - break; - case 27: - CleanUp(); - break; - } - glutPostRedisplay(); -} - - -static void -Init( void ) -{ - if (!glutExtensionSupported("GL_EXT_framebuffer_object")) { - printf("fbotest3: GL_EXT_framebuffer_object not found!\n"); - exit(0); - } - printf("fbotest3: GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - - /* create initial tex obj as an RGBA texture */ - glGenTextures(1, &Tex); - glBindTexture(GL_TEXTURE_2D, Tex); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, - GL_RGBA, GL_UNSIGNED_BYTE, NULL); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); - glEnable(GL_TEXTURE_2D); - - /* draw something to make sure the texture is used */ - glBegin(GL_POINTS); - glVertex2f(0, 0); - glEnd(); - - /* done w/ texturing */ - glDisable(GL_TEXTURE_2D); - - /* Create my Framebuffer Object */ - glGenFramebuffersEXT(1, &MyFB); - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, MyFB); - assert(glIsFramebufferEXT(MyFB)); - - /* Setup color renderbuffer */ - glGenRenderbuffersEXT(1, &ColorRb); - glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, ColorRb); - assert(glIsRenderbufferEXT(ColorRb)); - glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, - GL_RENDERBUFFER_EXT, ColorRb); - glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGB, Width, Height); - - /* Setup depth renderbuffer (a texture) */ - glGenRenderbuffersEXT(1, &DepthRb); - glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, DepthRb); - assert(glIsRenderbufferEXT(DepthRb)); - /* replace RGBA texture with Z texture */ - glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, Width, Height, 0, - GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL); - glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, - GL_TEXTURE_2D, Tex, 0); - - CheckError(__LINE__); - - /* restore to default */ - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - CheckError(__LINE__); -} - - -int -main( int argc, char *argv[] ) -{ - glutInit( &argc, argv ); - glutInitWindowPosition( 0, 0 ); - glutInitWindowSize(Width, Height); - glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE ); - Win = glutCreateWindow(argv[0]); - glewInit(); - glutReshapeFunc( Reshape ); - glutKeyboardFunc( Key ); - glutDisplayFunc( Display ); - if (Animate) - glutIdleFunc(Idle); - Init(); - glutMainLoop(); - return 0; -} |