diff options
Diffstat (limited to 'progs/tests/fbotest1.c')
-rw-r--r-- | progs/tests/fbotest1.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/progs/tests/fbotest1.c b/progs/tests/fbotest1.c deleted file mode 100644 index a95fdff74c3..00000000000 --- a/progs/tests/fbotest1.c +++ /dev/null @@ -1,212 +0,0 @@ -/* - * Test GL_EXT_framebuffer_object - * - * Brian Paul - * 7 Feb 2005 - */ - - -#include <assert.h> -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#include <GL/glew.h> -#include <GL/glut.h> - -static int Win; -static int Width = 400, Height = 400; -static GLuint MyFB, MyRB; - - -static void -CheckError(int line) -{ - GLenum err = glGetError(); - if (err) { - printf("GL Error 0x%x at line %d\n", (int) err, line); - } -} - - -static void -Display( void ) -{ - GLubyte *buffer = malloc(Width * Height * 4); - GLenum status; - - /* 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("Framebuffer incomplete!!!\n"); - } - - glClearColor(0.5, 0.5, 1.0, 0.0); - glClear( GL_COLOR_BUFFER_BIT ); - - glBegin(GL_POLYGON); - glColor3f(1, 0, 0); - glVertex2f(-1, -1); - glColor3f(0, 1, 0); - glVertex2f(1, -1); - glColor3f(0, 0, 1); - glVertex2f(0, 1); - glEnd(); - - /* read from user framebuffer */ - glReadPixels(0, 0, Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer); - - /* draw to window */ - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - glWindowPos2iARB(0, 0); - glDrawPixels(Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer); - - free(buffer); - glutSwapBuffers(); - CheckError(__LINE__); -} - - -static void -Reshape( int width, int height ) -{ -#if 0 - float ar = (float) width / (float) height; -#endif - glViewport( 0, 0, width, height ); - glMatrixMode( GL_PROJECTION ); - glLoadIdentity(); -#if 0 - glFrustum( -ar, ar, -1.0, 1.0, 5.0, 25.0 ); -#else - glOrtho(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0 ); -#endif - glMatrixMode( GL_MODELVIEW ); - glLoadIdentity(); - glTranslatef( 0.0, 0.0, -15.0 ); - Width = width; - Height = height; - glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGB, Width, Height); -} - - -static void -CleanUp(void) -{ - glDeleteFramebuffersEXT(1, &MyFB); - glDeleteRenderbuffersEXT(1, &MyRB); - assert(!glIsFramebufferEXT(MyFB)); - assert(!glIsRenderbufferEXT(MyRB)); - glutDestroyWindow(Win); - exit(0); -} - - -static void -Key( unsigned char key, int x, int y ) -{ - (void) x; - (void) y; - switch (key) { - case 27: - CleanUp(); - break; - } - glutPostRedisplay(); -} - - -static void -Init( void ) -{ - GLboolean ARB_fbo = glutExtensionSupported("GL_ARB_framebuffer_object"); - GLint i; - - if (!glutExtensionSupported("GL_EXT_framebuffer_object")) { - printf("GL_EXT_framebuffer_object not found!\n"); - exit(0); - } - printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - - glGenFramebuffersEXT(1, &MyFB); - assert(MyFB); - assert(!glIsFramebufferEXT(MyFB)); - if (!ARB_fbo) { - glDeleteFramebuffersEXT(1, &MyFB); - assert(!glIsFramebufferEXT(MyFB)); - } - /* Note, continue to use MyFB below */ - - glGenRenderbuffersEXT(1, &MyRB); - assert(MyRB); - assert(!glIsRenderbufferEXT(MyRB)); - if (!ARB_fbo) { - glDeleteRenderbuffersEXT(1, &MyRB); - assert(!glIsRenderbufferEXT(MyRB)); - MyRB = 42; /* an arbitrary ID */ - } - - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, MyFB); - assert(glIsFramebufferEXT(MyFB)); - glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, MyRB); - assert(glIsRenderbufferEXT(MyRB)); - - glGetIntegerv(GL_RENDERBUFFER_BINDING_EXT, &i); - assert(i == MyRB); - - glGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, &i); - assert(i == MyFB); - - CheckError(__LINE__); - glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, - GL_RENDERBUFFER_EXT, MyRB); - - glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGB, Width, Height); - - CheckError(__LINE__); - - { - GLint r, g, b, a; - glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT, - GL_RENDERBUFFER_RED_SIZE_EXT, &r); - glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT, - GL_RENDERBUFFER_GREEN_SIZE_EXT, &g); - glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT, - GL_RENDERBUFFER_BLUE_SIZE_EXT, &b); - glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT, - GL_RENDERBUFFER_ALPHA_SIZE_EXT, &a); - CheckError(__LINE__); - printf("renderbuffer RGBA sizes = %d %d %d %d\n", r, g, b, a); - - glGetIntegerv(GL_RED_BITS, &r); - glGetIntegerv(GL_GREEN_BITS, &g); - glGetIntegerv(GL_BLUE_BITS, &b); - glGetIntegerv(GL_ALPHA_BITS, &a); - printf("Visual RGBA sizes = %d %d %d %d\n", r, g, b, a); - } - - /* 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 ); - Init(); - glutMainLoop(); - return 0; -} |