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-rw-r--r--progs/demos/streaming_rect.c327
1 files changed, 0 insertions, 327 deletions
diff --git a/progs/demos/streaming_rect.c b/progs/demos/streaming_rect.c
deleted file mode 100644
index f65ac4ce36..0000000000
--- a/progs/demos/streaming_rect.c
+++ /dev/null
@@ -1,327 +0,0 @@
-/*
- * GL_ARB_pixel_buffer_object test
- *
- * Command line options:
- * -w WIDTH -h HEIGHT sets window size
- *
- */
-
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <GL/glew.h>
-#include <GL/glut.h>
-
-#include "readtex.h"
-
-
-#define ANIMATE 10
-#define PBO 11
-#define QUIT 100
-
-static GLuint DrawPBO;
-
-static GLboolean Animate = GL_TRUE;
-static GLboolean use_pbo = 1;
-static GLboolean whole_rect = 1;
-
-static GLfloat Drift = 0.0;
-static GLfloat drift_increment = 1/255.0;
-static GLfloat Xrot = 20.0, Yrot = 30.0;
-
-static GLuint Width = 1024;
-static GLuint Height = 512;
-
-
-static void Idle( void )
-{
- if (Animate) {
-
- Drift += drift_increment;
- if (Drift >= 1.0)
- Drift = 0.0;
-
- glutPostRedisplay();
- }
-}
-
-/*static int max( int a, int b ) { return a > b ? a : b; }*/
-
-#ifndef min
-static int min( int a, int b ) { return a < b ? a : b; }
-#endif
-
-static void DrawObject()
-{
- GLint size = Width * Height * 4;
-
- if (use_pbo) {
- /* XXX: This is extremely important - semantically makes the buffer
- * contents undefined, but in practice means that the driver can
- * release the old copy of the texture and allocate a new one
- * without waiting for outstanding rendering to complete.
- */
- glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_EXT, DrawPBO);
- glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_EXT, size, NULL, GL_STREAM_DRAW_ARB);
-
- {
- char *image = glMapBufferARB(GL_PIXEL_UNPACK_BUFFER_EXT, GL_WRITE_ONLY_ARB);
-
- printf("char %d\n", (unsigned char)(Drift * 255));
-
- memset(image, (unsigned char)(Drift * 255), size);
-
- glUnmapBufferARB(GL_PIXEL_UNPACK_BUFFER_EXT);
- }
-
-
- /* BGRA is required for most hardware paths:
- */
- glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA, Width, Height, 0,
- GL_BGRA, GL_UNSIGNED_BYTE, NULL);
- }
- else {
- static char *image = NULL;
-
- if (image == NULL)
- image = malloc(size);
-
- glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_EXT, 0);
-
- memset(image, (unsigned char)(Drift * 255), size);
-
- /* BGRA should be the fast path for regular uploads as well.
- */
- glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA, Width, Height, 0,
- GL_BGRA, GL_UNSIGNED_BYTE, image);
- }
-
- {
- int x,y,w,h;
-
- if (whole_rect) {
- x = y = 0;
- w = Width;
- h = Height;
- }
- else {
- x = y = 0;
- w = min(10, Width);
- h = min(10, Height);
- }
-
- glBegin(GL_QUADS);
-
- glTexCoord2f( x, y);
- glVertex2f( x, y );
-
- glTexCoord2f( x, y + h);
- glVertex2f( x, y + h);
-
- glTexCoord2f( x + w + .5, y + h);
- glVertex2f( x + w, y + h );
-
- glTexCoord2f( x + w, y + .5);
- glVertex2f( x + w, y );
-
- glEnd();
- }
-}
-
-
-
-static void Display( void )
-{
- static GLint T0 = 0;
- static GLint Frames = 0;
- GLint t;
-
- glClear( GL_COLOR_BUFFER_BIT );
-
- glPushMatrix();
- DrawObject();
- glPopMatrix();
-
- glutSwapBuffers();
-
- Frames++;
-
- t = glutGet(GLUT_ELAPSED_TIME);
- if (t - T0 >= 1000) {
- GLfloat seconds = (t - T0) / 1000.0;
-
- GLfloat fps = Frames / seconds;
- printf("%d frames in %6.3f seconds = %6.3f FPS\n", Frames, seconds, fps);
- fflush(stdout);
-
- drift_increment = 2.2 * seconds / Frames;
- T0 = t;
- Frames = 0;
- }
-}
-
-
-static void Reshape( int width, int height )
-{
- glViewport( 0, 0, width, height );
- glMatrixMode( GL_PROJECTION );
- glLoadIdentity();
-/* glFrustum( -1.0, 1.0, -1.0, 1.0, 10.0, 100.0 ); */
- gluOrtho2D( 0, width, height, 0 );
- glMatrixMode( GL_MODELVIEW );
- glLoadIdentity();
- glTranslatef(0.375, 0.375, 0);
-}
-
-
-static void ModeMenu(int entry)
-{
- if (entry==ANIMATE) {
- Animate = !Animate;
- }
- else if (entry==PBO) {
- use_pbo = !use_pbo;
- }
- else if (entry==QUIT) {
- exit(0);
- }
-
- glutPostRedisplay();
-}
-
-
-static void Key( unsigned char key, int x, int y )
-{
- (void) x;
- (void) y;
- switch (key) {
- case 27:
- exit(0);
- break;
- }
- glutPostRedisplay();
-}
-
-
-static void SpecialKey( int key, int x, int y )
-{
- float step = 3.0;
- (void) x;
- (void) y;
-
- switch (key) {
- case GLUT_KEY_UP:
- Xrot += step;
- break;
- case GLUT_KEY_DOWN:
- Xrot -= step;
- break;
- case GLUT_KEY_LEFT:
- Yrot += step;
- break;
- case GLUT_KEY_RIGHT:
- Yrot -= step;
- break;
- }
- glutPostRedisplay();
-}
-
-
-static void Init( int argc, char *argv[] )
-{
- const char *exten = (const char *) glGetString(GL_EXTENSIONS);
- GLuint texObj;
- GLint size;
-
-
- if (!strstr(exten, "GL_ARB_pixel_buffer_object")) {
- printf("Sorry, GL_ARB_pixel_buffer_object not supported by this renderer.\n");
- exit(1);
- }
-
- glGetIntegerv(GL_MAX_TEXTURE_SIZE, &size);
- printf("%d x %d max texture size\n", size, size);
-
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-
- /* allocate two texture objects */
- glGenTextures(1, &texObj);
-
- /* setup the texture objects */
- glActiveTextureARB(GL_TEXTURE0_ARB);
- glBindTexture(GL_TEXTURE_RECTANGLE_ARB, texObj);
-
- glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-
- glGenBuffersARB(1, &DrawPBO);
-
- glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_EXT, DrawPBO);
- glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_EXT,
- Width * Height * 4, NULL, GL_STREAM_DRAW);
-
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
-
- glEnable(GL_TEXTURE_RECTANGLE_ARB);
-
- glShadeModel(GL_SMOOTH);
- glClearColor(0.3, 0.3, 0.4, 1.0);
-
- if (argc > 1 && strcmp(argv[1], "-info")==0) {
- printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
- printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
- printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
- printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
- }
-}
-
-
-int main( int argc, char *argv[] )
-{
- GLint i;
-
- glutInit( &argc, argv );
-
- for (i = 1; i < argc; i++) {
- if (strcmp(argv[i], "-w") == 0) {
- Width = atoi(argv[i+1]);
- if (Width <= 0) {
- printf("Error, bad width\n");
- exit(1);
- }
- i++;
- }
- else if (strcmp(argv[i], "-h") == 0) {
- Height = atoi(argv[i+1]);
- if (Height <= 0) {
- printf("Error, bad height\n");
- exit(1);
- }
- i++;
- }
- }
-
- glutInitWindowSize( Width, Height );
- glutInitWindowPosition( 0, 0 );
- glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
- glutCreateWindow(argv[0] );
- glewInit();
-
- Init( argc, argv );
-
- glutReshapeFunc( Reshape );
- glutKeyboardFunc( Key );
- glutSpecialFunc( SpecialKey );
- glutDisplayFunc( Display );
- glutIdleFunc( Idle );
-
- glutCreateMenu(ModeMenu);
- glutAddMenuEntry("Toggle Animation", ANIMATE);
- glutAddMenuEntry("Toggle PBO", PBO);
- glutAddMenuEntry("Quit", QUIT);
- glutAttachMenu(GLUT_RIGHT_BUTTON);
-
- glutMainLoop();
- return 0;
-}
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