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author | Eric Anholt <eric@anholt.net> | 2010-05-21 09:32:38 -0700 |
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committer | Eric Anholt <eric@anholt.net> | 2010-05-21 12:20:39 -0700 |
commit | 68fc4b415e322f6744299e39864fbc377c6eff74 (patch) | |
tree | 4bafffd8b0105174f3c5c0ae327a005be9145990 /progs/trivial/clear-fbo.c | |
parent | e4f4489e3fc0b36d72821b55794fb843b2b7fa5f (diff) | |
download | external_mesa3d-68fc4b415e322f6744299e39864fbc377c6eff74.zip external_mesa3d-68fc4b415e322f6744299e39864fbc377c6eff74.tar.gz external_mesa3d-68fc4b415e322f6744299e39864fbc377c6eff74.tar.bz2 |
Remove demos that have moved to git+ssh://git.freedesktop.org/git/mesa/demos.
The remaining programs are ones I've had difficulty finding a build
environment for to make the build system or are unit tests that should
probably live next to their code instead. Hopefully people can bring
over the build for remaining pieces they care about.
Diffstat (limited to 'progs/trivial/clear-fbo.c')
-rw-r--r-- | progs/trivial/clear-fbo.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/progs/trivial/clear-fbo.c b/progs/trivial/clear-fbo.c deleted file mode 100644 index 6435c90..0000000 --- a/progs/trivial/clear-fbo.c +++ /dev/null @@ -1,208 +0,0 @@ - -#include <assert.h> -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#include <string.h> - -#include <GL/glew.h> -#include <GL/glut.h> - - - -static int Width = 512, Height = 512; -static GLuint MyFB, MyRB; - - -#define CheckError() assert(glGetError() == 0) - -GLenum doubleBuffer; - -static void Init(void) -{ - fprintf(stderr, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - fprintf(stderr, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION)); - fprintf(stderr, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR)); - fflush(stderr); - - - if (!glutExtensionSupported("GL_EXT_framebuffer_object")) { - printf("GL_EXT_framebuffer_object not found!\n"); - exit(0); - } - - - glGenFramebuffersEXT(1, &MyFB); - glGenRenderbuffersEXT(1, &MyRB); - - { - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, MyFB); - - glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, MyRB); - - glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, - GL_RENDERBUFFER_EXT, MyRB); - - glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGB, Width, Height); - - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - } - -} - - - -static void -Reshape( int width, int height ) -{ - glViewport( 0, 0, width, height ); - glMatrixMode( GL_PROJECTION ); - glLoadIdentity(); - glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0); - glMatrixMode( GL_MODELVIEW ); - - Width = width; - Height = height; - glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGB, Width, Height); -} - -static void Key(unsigned char key, int x, int y) -{ - - switch (key) { - case 27: - exit(1); - default: - break; - } - - glutPostRedisplay(); -} - - - -static void Draw( void ) -{ - - /* draw to user framebuffer */ - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, MyFB); - glDrawBuffer(GL_COLOR_ATTACHMENT1_EXT); - glReadBuffer(GL_COLOR_ATTACHMENT1_EXT); - - - glViewport(0, 0, Width, Height); - CheckError(); - - glClearColor(0.5, 0.5, 1.0, 0.0); - glClear(GL_COLOR_BUFFER_BIT); - CheckError(); - - if (0) { - glBegin(GL_TRIANGLES); - glColor3f(0,0,.7); - glVertex3f( 0.9, -0.9, -30.0); - glColor3f(.8,0,0); - glVertex3f( 0.9, 0.9, -30.0); - glColor3f(0,.9,0); - glVertex3f(-0.9, 0.0, -30.0); - glEnd(); - } - - { - GLubyte *buffer = malloc(Width * Height * 4); - - /* read from user framebuffer */ - glReadPixels(0, 0, Width-60, Height-60, GL_RGBA, GL_UNSIGNED_BYTE, buffer); - CheckError(); - - /* draw to window */ - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - glViewport(0, 0, Width, Height); - - /* Try to clear the window, but will overwrite: - */ - glClearColor(0.8, 0.8, 0, 0.0); - glClear(GL_COLOR_BUFFER_BIT); - - glWindowPos2iARB(30, 30); - glDrawPixels(Width-60, Height-60, GL_RGBA, GL_UNSIGNED_BYTE, buffer); - - free(buffer); - } - - /* Bind normal framebuffer */ - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - glViewport(0, 0, Width, Height); - - if (0) { - glBegin(GL_TRIANGLES); - glColor3f(0,.7,0); - glVertex3f( 0.5, -0.5, -30.0); - glColor3f(0,0,.8); - glVertex3f( 0.5, 0.5, -30.0); - glColor3f(.9,0,0); - glVertex3f(-0.5, 0.0, -30.0); - glEnd(); - } - - if (doubleBuffer) - glutSwapBuffers(); - else - glFinish(); - - CheckError(); -} - - -static GLenum Args(int argc, char **argv) -{ - GLint i; - - doubleBuffer = GL_FALSE; - - for (i = 1; i < argc; i++) { - if (strcmp(argv[i], "-sb") == 0) { - doubleBuffer = GL_FALSE; - } else if (strcmp(argv[i], "-db") == 0) { - doubleBuffer = GL_TRUE; - } else { - fprintf(stderr, "%s (Bad option).\n", argv[i]); - return GL_FALSE; - } - } - return GL_TRUE; -} - - - -int -main( int argc, char *argv[] ) -{ - GLenum type; - - glutInit(&argc, argv); - - if (Args(argc, argv) == GL_FALSE) { - exit(1); - } - - glutInitWindowPosition(100, 0); glutInitWindowSize( Width, Height ); - - type = GLUT_RGB; - type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE; - glutInitDisplayMode(type); - - if (glutCreateWindow(argv[0]) == GL_FALSE) { - exit(1); - } - - glewInit(); - - Init(); - - glutReshapeFunc(Reshape); - glutKeyboardFunc(Key); - glutDisplayFunc(Draw); - glutMainLoop(); - return 0; -} |