morph3d \
multiarb \
occlude \
- osdemo \
paltex \
pixeltex \
pointblast \
shadowtex.o: shadowtex.c showbuffer.h
$(CC) -c -I$(INCDIR) $(CFLAGS) shadowtex.c
-# special case: need the -lOSMesa library:
-osdemo: osdemo.c
- $(CC) -I$(INCDIR) $(CFLAGS) osdemo.c $(OSMESA_LIBS) -o $@
-
-# another special case: need the -lOSMesa16 library:
-osdemo16: osdemo16.c
- $(CC) -I$(INCDIR) $(CFLAGS) osdemo16.c $(OSMESA16_LIBS) -o $@
-
-# another special case: need the -lOSMesa32 library:
-osdemo32: osdemo32.c
- $(CC) -I$(INCDIR) $(CFLAGS) osdemo32.c $(OSMESA32_LIBS) -o $@
-
-
-
clean:
-rm -f $(PROGS)
-rm -f *.o *~
+++ /dev/null
-
-/*
- * Demo of off-screen Mesa rendering
- *
- * See Mesa/include/GL/osmesa.h for documentation of the OSMesa functions.
- *
- * If you want to render BIG images you'll probably have to increase
- * MAX_WIDTH and MAX_HEIGHT in src/config.h.
- *
- * This program is in the public domain.
- *
- * Brian Paul
- *
- * PPM output provided by Joerg Schmalzl.
- * ASCII PPM output added by Brian Paul.
- *
- * Usage: osdemo [-perf] [filename]
- *
- * -perf: Redraws the image 1000 times, displaying the FPS every 5 secs.
- * filename: file to store the TGA or PPM output
- */
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "GL/osmesa.h"
-#include "GL/glut.h"
-
-
-#define SAVE_TARGA
-
-
-#define WIDTH 400
-#define HEIGHT 400
-
-static GLint T0 = 0;
-static GLint Frames = 0;
-static int perf = 0;
-
-static void render_image( void )
-{
- GLfloat light_ambient[] = { 0.0, 0.0, 0.0, 1.0 };
- GLfloat light_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat light_specular[] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat light_position[] = { 1.0, 1.0, 1.0, 0.0 };
- GLfloat red_mat[] = { 1.0, 0.2, 0.2, 1.0 };
- GLfloat green_mat[] = { 0.2, 1.0, 0.2, 1.0 };
- GLfloat blue_mat[] = { 0.2, 0.2, 1.0, 1.0 };
-
-
- glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
- glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
- glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
- glLightfv(GL_LIGHT0, GL_POSITION, light_position);
-
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
- glEnable(GL_DEPTH_TEST);
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glOrtho(-2.5, 2.5, -2.5, 2.5, -10.0, 10.0);
- glMatrixMode(GL_MODELVIEW);
-
- glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
-
- glPushMatrix();
- glRotatef(20.0, 1.0, 0.0, 0.0);
-
- glPushMatrix();
- glTranslatef(-0.75, 0.5, 0.0);
- glRotatef(90.0, 1.0, 0.0, 0.0);
- glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red_mat );
- glutSolidTorus(0.275, 0.85, 20, 20);
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(-0.75, -0.5, 0.0);
- glRotatef(270.0, 1.0, 0.0, 0.0);
- glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, green_mat );
- glutSolidCone(1.0, 2.0, 16, 1);
- glPopMatrix();
-
-#ifdef GL_HP_occlusion_test
- if (perf == 0) {
- GLboolean bRet;
- glDepthMask(GL_FALSE);
- glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE);
- glEnable(GL_OCCLUSION_TEST_HP);
- glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
-
- glPushMatrix();
- glTranslatef(0.75, 0.0, -1.0);
- glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
- glutSolidSphere(1.0, 20, 20);
- glPopMatrix();
-
- glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
- printf("Occlusion test 1 (result should be 1): %d\n",bRet);
-
- glDepthMask(GL_TRUE);
- glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
- glDisable(GL_OCCLUSION_TEST_HP);
- }
-#endif
-
- glPushMatrix();
- glTranslatef(0.75, 0.0, -1.0);
- glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
- glutSolidSphere(1.0, 20, 20);
- glPopMatrix();
-
-#ifdef GL_HP_occlusion_test
- if (perf == 0){
- GLboolean bRet;
-
- glDepthMask(GL_FALSE);
- glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE);
- glEnable(GL_OCCLUSION_TEST_HP);
- glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
-
- /* draw a sphere inside the previous sphere */
- glPushMatrix();
- glTranslatef(0.75, 0.0, -1.0);
- glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
- glutSolidSphere(0.5, 20, 20);
- glPopMatrix();
-
- glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
- printf("Occlusion test 2 (result should be 0): %d\n",bRet);
-
- glDepthMask(GL_TRUE);
- glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
- glDisable(GL_OCCLUSION_TEST_HP);
- }
-#endif
-
- glPopMatrix();
-
- /* This is very important!!!
- * Make sure buffered commands are finished!!!
- */
- glFinish();
-
- Frames++;
- if (perf) {
- GLint t = glutGet(GLUT_ELAPSED_TIME);
- if (t - T0 >= 5000) {
- GLfloat seconds = (t - T0) / 1000.0;
- GLfloat fps = Frames / seconds;
- printf("%d frames in %6.3f seconds = %6.3f FPS\n", Frames, seconds, fps);
- T0 = t;
- Frames = 0;
- }
- }
-}
-
-
-#ifdef SAVE_TARGA
-
-static void
-write_targa(const char *filename, const GLubyte *buffer, int width, int height)
-{
- FILE *f = fopen( filename, "w" );
- if (f) {
- int i, x, y;
- const GLubyte *ptr = buffer;
- printf ("osdemo, writing tga file \n");
- fputc (0x00, f); /* ID Length, 0 => No ID */
- fputc (0x00, f); /* Color Map Type, 0 => No color map included */
- fputc (0x02, f); /* Image Type, 2 => Uncompressed, True-color Image */
- fputc (0x00, f); /* Next five bytes are about the color map entries */
- fputc (0x00, f); /* 2 bytes Index, 2 bytes length, 1 byte size */
- fputc (0x00, f);
- fputc (0x00, f);
- fputc (0x00, f);
- fputc (0x00, f); /* X-origin of Image */
- fputc (0x00, f);
- fputc (0x00, f); /* Y-origin of Image */
- fputc (0x00, f);
- fputc (WIDTH & 0xff, f); /* Image Width */
- fputc ((WIDTH>>8) & 0xff, f);
- fputc (HEIGHT & 0xff, f); /* Image Height */
- fputc ((HEIGHT>>8) & 0xff, f);
- fputc (0x18, f); /* Pixel Depth, 0x18 => 24 Bits */
- fputc (0x20, f); /* Image Descriptor */
- fclose(f);
- f = fopen( filename, "ab" ); /* reopen in binary append mode */
- for (y=height-1; y>=0; y--) {
- for (x=0; x<width; x++) {
- i = (y*width + x) * 4;
- fputc(ptr[i+2], f); /* write blue */
- fputc(ptr[i+1], f); /* write green */
- fputc(ptr[i], f); /* write red */
- }
- }
- }
-}
-
-#else
-
-static void
-write_ppm(const char *filename, const GLubyte *buffer, int width, int height)
-{
- const int binary = 0;
- FILE *f = fopen( filename, "w" );
- if (f) {
- int i, x, y;
- const GLubyte *ptr = buffer;
- if (binary) {
- fprintf(f,"P6\n");
- fprintf(f,"# ppm-file created by osdemo.c\n");
- fprintf(f,"%i %i\n", width,height);
- fprintf(f,"255\n");
- fclose(f);
- f = fopen( filename, "ab" ); /* reopen in binary append mode */
- for (y=height-1; y>=0; y--) {
- for (x=0; x<width; x++) {
- i = (y*width + x) * 4;
- fputc(ptr[i], f); /* write red */
- fputc(ptr[i+1], f); /* write green */
- fputc(ptr[i+2], f); /* write blue */
- }
- }
- }
- else {
- /*ASCII*/
- int counter = 0;
- fprintf(f,"P3\n");
- fprintf(f,"# ascii ppm file created by osdemo.c\n");
- fprintf(f,"%i %i\n", width, height);
- fprintf(f,"255\n");
- for (y=height-1; y>=0; y--) {
- for (x=0; x<width; x++) {
- i = (y*width + x) * 4;
- fprintf(f, " %3d %3d %3d", ptr[i], ptr[i+1], ptr[i+2]);
- counter++;
- if (counter % 5 == 0)
- fprintf(f, "\n");
- }
- }
- }
- fclose(f);
- }
-}
-
-#endif
-
-
-
-int main( int argc, char *argv[] )
-{
- void *buffer;
- int i;
- char *filename = NULL;
-
- /* Create an RGBA-mode context */
-#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
- /* specify Z, stencil, accum sizes */
- OSMesaContext ctx = OSMesaCreateContextExt( OSMESA_RGBA, 16, 0, 0, NULL );
-#else
- OSMesaContext ctx = OSMesaCreateContext( OSMESA_RGBA, NULL );
-#endif
- if (!ctx) {
- printf("OSMesaCreateContext failed!\n");
- return 0;
- }
-
- for ( i=1; i<argc; i++ ) {
- if (argv[i][0] != '-') filename = argv[i];
- if (strcmp(argv[i], "-perf")==0) perf = 1;
- }
-
- /* Allocate the image buffer */
- buffer = malloc( WIDTH * HEIGHT * 4 * sizeof(GLubyte) );
- if (!buffer) {
- printf("Alloc image buffer failed!\n");
- return 0;
- }
-
- /* Bind the buffer to the context and make it current */
- if (!OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_BYTE, WIDTH, HEIGHT )) {
- printf("OSMesaMakeCurrent failed!\n");
- return 0;
- }
-
-
- {
- int z, s, a;
- glGetIntegerv(GL_DEPTH_BITS, &z);
- glGetIntegerv(GL_STENCIL_BITS, &s);
- glGetIntegerv(GL_ACCUM_RED_BITS, &a);
- printf("Depth=%d Stencil=%d Accum=%d\n", z, s, a);
- }
-
- render_image();
- if (perf)
- for(i=0; i< 1000; i++)
- render_image();
-
- if (filename != NULL) {
-#ifdef SAVE_TARGA
- write_targa(filename, buffer, WIDTH, HEIGHT);
-#else
- write_ppm(filename, buffer, WIDTH, HEIGHT);
-#endif
- }
- else {
- printf("Specify a filename if you want to make an image file\n");
- }
-
- printf("all done\n");
-
- /* free the image buffer */
- free( buffer );
-
- /* destroy the context */
- OSMesaDestroyContext( ctx );
-
- return 0;
-}
+++ /dev/null
-/*
- * Demo of off-screen Mesa rendering with 16-bit color channels.
- * This requires the libOSMesa16.so library.
- *
- * Compile with something like this:
- *
- * gcc osdemo16.c -I../../include -L../../lib -lglut -lGLU -lOSMesa16 -lm -o osdemo16
- */
-
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include "GL/osmesa.h"
-#include "GL/glut.h"
-
-
-#define SAVE_TARGA
-
-
-#define WIDTH 400
-#define HEIGHT 400
-
-
-
-static void render_image( void )
-{
- GLfloat light_ambient[] = { 0.0, 0.0, 0.0, 1.0 };
- GLfloat light_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat light_specular[] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat light_position[] = { 1.0, 1.0, 1.0, 0.0 };
- GLfloat red_mat[] = { 1.0, 0.2, 0.2, 1.0 };
- GLfloat green_mat[] = { 0.2, 1.0, 0.2, 0.5 };
- GLfloat blue_mat[] = { 0.2, 0.2, 1.0, 1.0 };
- GLfloat white_mat[] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat purple_mat[] = { 1.0, 0.2, 1.0, 1.0 };
- GLUquadricObj *qobj = gluNewQuadric();
-
- glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
- glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
- glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
- glLightfv(GL_LIGHT0, GL_POSITION, light_position);
-
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
- glEnable(GL_DEPTH_TEST);
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glOrtho(-2.5, 2.5, -2.5, 2.5, -10.0, 10.0);
- glMatrixMode(GL_MODELVIEW);
-
- glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
-
- glPushMatrix();
- glRotatef(20.0, 1.0, 0.0, 0.0);
-
-#if 0
- glPushMatrix();
- glTranslatef(-0.75, 0.5, 0.0);
- glRotatef(90.0, 1.0, 0.0, 0.0);
- glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red_mat );
- glutSolidTorus(0.275, 0.85, 20, 20);
- glPopMatrix();
-#endif
-
- /* red square */
- glPushMatrix();
- glTranslatef(0.0, -0.5, 0.0);
- glRotatef(90, 1, 0.5, 0);
- glScalef(3, 3, 3);
- glDisable(GL_LIGHTING);
- glColor4f(1, 0, 0, 0.5);
- glBegin(GL_POLYGON);
- glVertex2f(-1, -1);
- glVertex2f( 1, -1);
- glVertex2f( 1, 1);
- glVertex2f(-1, 1);
- glEnd();
- glEnable(GL_LIGHTING);
- glPopMatrix();
-
-#if 0
- /* green square */
- glPushMatrix();
- glTranslatef(0.0, 0.5, 0.1);
- glDisable(GL_LIGHTING);
- glColor3f(0, 1, 0);
- glBegin(GL_POLYGON);
- glVertex2f(-1, -1);
- glVertex2f( 1, -1);
- glVertex2f( 1, 1);
- glVertex2f(-1, 1);
- glEnd();
- glEnable(GL_LIGHTING);
- glPopMatrix();
-
- /* blue square */
- glPushMatrix();
- glTranslatef(0.75, 0.5, 0.3);
- glDisable(GL_LIGHTING);
- glColor3f(0, 0, 0.5);
- glBegin(GL_POLYGON);
- glVertex2f(-1, -1);
- glVertex2f( 1, -1);
- glVertex2f( 1, 1);
- glVertex2f(-1, 1);
- glEnd();
- glEnable(GL_LIGHTING);
- glPopMatrix();
-#endif
- glPushMatrix();
- glTranslatef(-0.75, -0.5, 0.0);
- glRotatef(270.0, 1.0, 0.0, 0.0);
- glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, green_mat );
- glColor4f(0,1,0,0.5);
- glEnable(GL_BLEND);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- gluCylinder(qobj, 1.0, 0.0, 2.0, 16, 1);
- glDisable(GL_BLEND);
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(0.75, 1.0, 1.0);
- glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
- gluSphere(qobj, 1.0, 20, 20);
- glPopMatrix();
-
- glPopMatrix();
-
- /* This is very important!!!
- * Make sure buffered commands are finished!!!
- */
- glFinish();
-
- gluDeleteQuadric(qobj);
-
- {
- GLint 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("channel sizes: %d %d %d %d\n", r, g, b, a);
- }
-}
-
-
-
-static void
-write_targa(const char *filename, const GLushort *buffer, int width, int height)
-{
- FILE *f = fopen( filename, "w" );
- if (f) {
- int i, x, y;
- const GLushort *ptr = buffer;
- printf ("osdemo, writing tga file \n");
- fputc (0x00, f); /* ID Length, 0 => No ID */
- fputc (0x00, f); /* Color Map Type, 0 => No color map included */
- fputc (0x02, f); /* Image Type, 2 => Uncompressed, True-color Image */
- fputc (0x00, f); /* Next five bytes are about the color map entries */
- fputc (0x00, f); /* 2 bytes Index, 2 bytes length, 1 byte size */
- fputc (0x00, f);
- fputc (0x00, f);
- fputc (0x00, f);
- fputc (0x00, f); /* X-origin of Image */
- fputc (0x00, f);
- fputc (0x00, f); /* Y-origin of Image */
- fputc (0x00, f);
- fputc (WIDTH & 0xff, f); /* Image Width */
- fputc ((WIDTH>>8) & 0xff, f);
- fputc (HEIGHT & 0xff, f); /* Image Height */
- fputc ((HEIGHT>>8) & 0xff, f);
- fputc (0x18, f); /* Pixel Depth, 0x18 => 24 Bits */
- fputc (0x20, f); /* Image Descriptor */
- fclose(f);
- f = fopen( filename, "ab" ); /* reopen in binary append mode */
- for (y=height-1; y>=0; y--) {
- for (x=0; x<width; x++) {
- i = (y*width + x) * 4;
- /* just write 8 high bits */
- fputc(ptr[i+2] >> 8, f); /* write blue */
- fputc(ptr[i+1] >> 8, f); /* write green */
- fputc(ptr[i] >> 8, f); /* write red */
- }
- }
- }
-}
-
-
-static void
-write_ppm(const char *filename, const GLushort *buffer, int width, int height)
-{
- const int binary = 0;
- FILE *f = fopen( filename, "w" );
- if (f) {
- int i, x, y;
- const GLushort *ptr = buffer;
- if (binary) {
- fprintf(f,"P6\n");
- fprintf(f,"# ppm-file created by osdemo.c\n");
- fprintf(f,"%i %i\n", width,height);
- fprintf(f,"255\n");
- fclose(f);
- f = fopen( filename, "ab" ); /* reopen in binary append mode */
- for (y=height-1; y>=0; y--) {
- for (x=0; x<width; x++) {
- i = (y*width + x) * 4;
- /* just write 8 high bits */
- fputc(ptr[i] >> 8, f); /* write red */
- fputc(ptr[i+1] >> 8, f); /* write green */
- fputc(ptr[i+2] >> 8, f); /* write blue */
- }
- }
- }
- else {
- /*ASCII*/
- int counter = 0;
- fprintf(f,"P3\n");
- fprintf(f,"# ascii ppm file created by osdemo.c\n");
- fprintf(f,"%i %i\n", width, height);
- fprintf(f,"255\n");
- for (y=height-1; y>=0; y--) {
- for (x=0; x<width; x++) {
- i = (y*width + x) * 4;
- /* just write 8 high bits */
- fprintf(f, " %3d %3d %3d", ptr[i] >> 8, ptr[i+1] >> 8, ptr[i+2] >> 8);
- counter++;
- if (counter % 5 == 0)
- fprintf(f, "\n");
- }
- }
- }
- fclose(f);
- }
-}
-
-
-
-int main( int argc, char *argv[] )
-{
- GLushort *buffer;
-
- /* Create an RGBA-mode context */
-#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
- /* specify Z, stencil, accum sizes */
- OSMesaContext ctx = OSMesaCreateContextExt( GL_RGBA, 16, 0, 0, NULL );
-#else
- OSMesaContext ctx = OSMesaCreateContext( GL_RGBA, NULL );
-#endif
- if (!ctx) {
- printf("OSMesaCreateContext failed!\n");
- return 0;
- }
-
- /* Allocate the image buffer */
- buffer = (GLushort *) malloc( WIDTH * HEIGHT * 4 * sizeof(GLushort));
- if (!buffer) {
- printf("Alloc image buffer failed!\n");
- return 0;
- }
-
- /* Bind the buffer to the context and make it current */
- if (!OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_SHORT, WIDTH, HEIGHT )) {
- printf("OSMesaMakeCurrent failed!\n");
- return 0;
- }
-
- render_image();
-
- if (argc>1) {
-#ifdef SAVE_TARGA
- write_targa(argv[1], buffer, WIDTH, HEIGHT);
-#else
- write_ppm(argv[1], buffer, WIDTH, HEIGHT);
-#endif
- }
- else {
- printf("Specify a filename if you want to make an image file\n");
- }
-
- printf("all done\n");
-
- /* free the image buffer */
- free( buffer );
-
- /* destroy the context */
- OSMesaDestroyContext( ctx );
-
- return 0;
-}
+++ /dev/null
-/*
- * Demo of off-screen Mesa rendering with 32-bit float color channels.
- * This requires the libOSMesa32.so library.
- *
- * Compile with something like this:
- *
- * gcc osdemo32.c -I../../include -L../../lib -lglut -lGLU -lOSMesa32 -lm -o osdemo32
- */
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include "GL/osmesa.h"
-#include "GL/glut.h"
-
-
-#define SAVE_TARGA
-
-
-#define WIDTH 400
-#define HEIGHT 400
-
-
-
-static void render_image( void )
-{
- GLfloat light_ambient[] = { 0.0, 0.0, 0.0, 1.0 };
- GLfloat light_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat light_specular[] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat light_position[] = { 1.0, 1.0, 1.0, 0.0 };
- GLfloat red_mat[] = { 1.0, 0.2, 0.2, 1.0 };
- GLfloat green_mat[] = { 0.2, 1.0, 0.2, 0.5 };
- GLfloat blue_mat[] = { 0.2, 0.2, 1.0, 1.0 };
- GLfloat white_mat[] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat purple_mat[] = { 1.0, 0.2, 1.0, 1.0 };
- GLUquadricObj *qobj = gluNewQuadric();
-
- glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
- glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
- glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
- glLightfv(GL_LIGHT0, GL_POSITION, light_position);
-
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
- glEnable(GL_DEPTH_TEST);
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glOrtho(-2.5, 2.5, -2.5, 2.5, -10.0, 10.0);
- glMatrixMode(GL_MODELVIEW);
-
- glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
-
- glPushMatrix();
- glRotatef(20.0, 1.0, 0.0, 0.0);
-
-#if 0
- glPushMatrix();
- glTranslatef(-0.75, 0.5, 0.0);
- glRotatef(90.0, 1.0, 0.0, 0.0);
- glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red_mat );
- glutSolidTorus(0.275, 0.85, 20, 20);
- glPopMatrix();
-#endif
-
- /* red square */
- glPushMatrix();
- glTranslatef(0.0, -0.5, 0.0);
- glRotatef(90, 1, 0.5, 0);
- glScalef(3, 3, 3);
- glDisable(GL_LIGHTING);
- glColor4f(1, 0, 0, 0.5);
- glBegin(GL_POLYGON);
- glVertex2f(-1, -1);
- glVertex2f( 1, -1);
- glVertex2f( 1, 1);
- glVertex2f(-1, 1);
- glEnd();
- glEnable(GL_LIGHTING);
- glPopMatrix();
-
-#if 0
- /* green square */
- glPushMatrix();
- glTranslatef(0.0, 0.5, 0.1);
- glDisable(GL_LIGHTING);
- glColor3f(0, 1, 0);
- glBegin(GL_POLYGON);
- glVertex2f(-1, -1);
- glVertex2f( 1, -1);
- glVertex2f( 1, 1);
- glVertex2f(-1, 1);
- glEnd();
- glEnable(GL_LIGHTING);
- glPopMatrix();
-
- /* blue square */
- glPushMatrix();
- glTranslatef(0.75, 0.5, 0.3);
- glDisable(GL_LIGHTING);
- glColor3f(0, 0, 0.5);
- glBegin(GL_POLYGON);
- glVertex2f(-1, -1);
- glVertex2f( 1, -1);
- glVertex2f( 1, 1);
- glVertex2f(-1, 1);
- glEnd();
- glEnable(GL_LIGHTING);
- glPopMatrix();
-#endif
- glPushMatrix();
- glTranslatef(-0.75, -0.5, 0.0);
- glRotatef(270.0, 1.0, 0.0, 0.0);
- glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, green_mat );
- glColor4f(0,1,0,0.5);
- glEnable(GL_BLEND);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- gluCylinder(qobj, 1.0, 0.0, 2.0, 16, 1);
- glDisable(GL_BLEND);
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(0.75, 1.0, 1.0);
- glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
- gluSphere(qobj, 1.0, 20, 20);
- glPopMatrix();
-
- glPopMatrix();
-
- /* This is very important!!!
- * Make sure buffered commands are finished!!!
- */
- glFinish();
-
- gluDeleteQuadric(qobj);
-
- {
- GLint 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("channel sizes: %d %d %d %d\n", r, g, b, a);
- }
-}
-
-
-
-static void
-write_targa(const char *filename, const GLfloat *buffer, int width, int height)
-{
- FILE *f = fopen( filename, "w" );
- if (f) {
- int i, x, y;
- const GLfloat *ptr = buffer;
- printf ("osdemo, writing tga file \n");
- fputc (0x00, f); /* ID Length, 0 => No ID */
- fputc (0x00, f); /* Color Map Type, 0 => No color map included */
- fputc (0x02, f); /* Image Type, 2 => Uncompressed, True-color Image */
- fputc (0x00, f); /* Next five bytes are about the color map entries */
- fputc (0x00, f); /* 2 bytes Index, 2 bytes length, 1 byte size */
- fputc (0x00, f);
- fputc (0x00, f);
- fputc (0x00, f);
- fputc (0x00, f); /* X-origin of Image */
- fputc (0x00, f);
- fputc (0x00, f); /* Y-origin of Image */
- fputc (0x00, f);
- fputc (WIDTH & 0xff, f); /* Image Width */
- fputc ((WIDTH>>8) & 0xff, f);
- fputc (HEIGHT & 0xff, f); /* Image Height */
- fputc ((HEIGHT>>8) & 0xff, f);
- fputc (0x18, f); /* Pixel Depth, 0x18 => 24 Bits */
- fputc (0x20, f); /* Image Descriptor */
- fclose(f);
- f = fopen( filename, "ab" ); /* reopen in binary append mode */
- for (y=height-1; y>=0; y--) {
- for (x=0; x<width; x++) {
- int r, g, b;
- i = (y*width + x) * 4;
- r = (int) (ptr[i+0] * 255.0);
- g = (int) (ptr[i+1] * 255.0);
- b = (int) (ptr[i+2] * 255.0);
- if (r > 255) r = 255;
- if (g > 255) g = 255;
- if (b > 255) b = 255;
- fputc(b, f); /* write blue */
- fputc(g, f); /* write green */
- fputc(r, f); /* write red */
- }
- }
- }
-}
-
-
-static void
-write_ppm(const char *filename, const GLfloat *buffer, int width, int height)
-{
- const int binary = 0;
- FILE *f = fopen( filename, "w" );
- if (f) {
- int i, x, y;
- const GLfloat *ptr = buffer;
- if (binary) {
- fprintf(f,"P6\n");
- fprintf(f,"# ppm-file created by osdemo.c\n");
- fprintf(f,"%i %i\n", width,height);
- fprintf(f,"255\n");
- fclose(f);
- f = fopen( filename, "ab" ); /* reopen in binary append mode */
- for (y=height-1; y>=0; y--) {
- for (x=0; x<width; x++) {
- int r, g, b;
- i = (y*width + x) * 4;
- r = (int) (ptr[i+0] * 255.0);
- g = (int) (ptr[i+1] * 255.0);
- b = (int) (ptr[i+2] * 255.0);
- if (r > 255) r = 255;
- if (g > 255) g = 255;
- if (b > 255) b = 255;
- fputc(r, f); /* write red */
- fputc(g, f); /* write green */
- fputc(b, f); /* write blue */
- }
- }
- }
- else {
- /*ASCII*/
- int counter = 0;
- fprintf(f,"P3\n");
- fprintf(f,"# ascii ppm file created by osdemo.c\n");
- fprintf(f,"%i %i\n", width, height);
- fprintf(f,"255\n");
- for (y=height-1; y>=0; y--) {
- for (x=0; x<width; x++) {
- int r, g, b;
- i = (y*width + x) * 4;
- r = (int) (ptr[i+0] * 255.0);
- g = (int) (ptr[i+1] * 255.0);
- b = (int) (ptr[i+2] * 255.0);
- if (r > 255) r = 255;
- if (g > 255) g = 255;
- if (b > 255) b = 255;
- fprintf(f, " %3d %3d %3d", r, g, b);
- counter++;
- if (counter % 5 == 0)
- fprintf(f, "\n");
- }
- }
- }
- fclose(f);
- }
-}
-
-
-
-int main( int argc, char *argv[] )
-{
- GLfloat *buffer;
-
- /* Create an RGBA-mode context */
-#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
- /* specify Z, stencil, accum sizes */
- OSMesaContext ctx = OSMesaCreateContextExt( GL_RGBA, 16, 0, 0, NULL );
-#else
- OSMesaContext ctx = OSMesaCreateContext( GL_RGBA, NULL );
-#endif
- if (!ctx) {
- printf("OSMesaCreateContext failed!\n");
- return 0;
- }
-
- /* Allocate the image buffer */
- buffer = (GLfloat *) malloc( WIDTH * HEIGHT * 4 * sizeof(GLfloat));
- if (!buffer) {
- printf("Alloc image buffer failed!\n");
- return 0;
- }
-
- /* Bind the buffer to the context and make it current */
- if (!OSMesaMakeCurrent( ctx, buffer, GL_FLOAT, WIDTH, HEIGHT )) {
- printf("OSMesaMakeCurrent failed!\n");
- return 0;
- }
-
- render_image();
-
- if (argc>1) {
-#ifdef SAVE_TARGA
- write_targa(argv[1], buffer, WIDTH, HEIGHT);
-#else
- write_ppm(argv[1], buffer, WIDTH, HEIGHT);
-#endif
- }
- else {
- printf("Specify a filename if you want to make an image file\n");
- }
-
- printf("all done\n");
-
- /* free the image buffer */
- free( buffer );
-
- /* destroy the context */
- OSMesaDestroyContext( ctx );
-
- return 0;
-}
--- /dev/null
+# progs/demos/Makefile
+
+TOP = ../..
+include $(TOP)/configs/current
+
+INCDIR = $(TOP)/include
+
+OSMESA_LIBS = -L$(LIB_DIR) -lglut -lOSMesa -lGLU -lGL $(APP_LIB_DEPS)
+
+OSMESA16_LIBS = -L$(LIB_DIR) -lglut -lOSMesa16 -lGLU -lGL $(APP_LIB_DEPS)
+
+OSMESA32_LIBS = -L$(LIB_DIR) -lglut -lOSMesa32 -lGLU -lGL $(APP_LIB_DEPS)
+
+LIB_DEP = $(LIB_DIR)/$(GL_LIB_NAME) $(LIB_DIR)/$(GLU_LIB_NAME) $(LIB_DIR)/$(GLUT_LIB_NAME)
+
+PROGS = \
+ osdemo
+
+
+##### RULES #####
+
+.SUFFIXES:
+.SUFFIXES: .c
+
+
+# make executable from .c file:
+.c: $(LIB_DEP) readtex.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $< readtex.o $(APP_LIB_DEPS) -o $@
+
+
+##### TARGETS #####
+
+default: readtex.o $(PROGS)
+
+
+readtex.c: $(TOP)/progs/util/readtex.c
+ cp $< .
+
+readtex.h: $(TOP)/progs/util/readtex.h
+ cp $< .
+
+readtex.o: readtex.c readtex.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) readtex.c
+
+
+showbuffer.c: $(TOP)/progs/util/showbuffer.c
+ cp $< .
+
+showbuffer.h: $(TOP)/progs/util/showbuffer.h
+ cp $< .
+
+showbuffer.o: showbuffer.c showbuffer.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) showbuffer.c
+
+
+# special case: need the -lOSMesa library:
+osdemo: osdemo.c
+ $(CC) -I$(INCDIR) $(CFLAGS) osdemo.c $(OSMESA_LIBS) -o $@
+
+# another special case: need the -lOSMesa16 library:
+osdemo16: osdemo16.c
+ $(CC) -I$(INCDIR) $(CFLAGS) osdemo16.c $(OSMESA16_LIBS) -o $@
+
+# another special case: need the -lOSMesa32 library:
+osdemo32: osdemo32.c
+ $(CC) -I$(INCDIR) $(CFLAGS) osdemo32.c $(OSMESA32_LIBS) -o $@
+
+
+
+clean:
+ -rm -f $(PROGS)
+ -rm -f *.o *~
+ -rm -f readtex.[ch] showbuffer.[ch]
--- /dev/null
+
+/*
+ * Demo of off-screen Mesa rendering
+ *
+ * See Mesa/include/GL/osmesa.h for documentation of the OSMesa functions.
+ *
+ * If you want to render BIG images you'll probably have to increase
+ * MAX_WIDTH and MAX_HEIGHT in src/config.h.
+ *
+ * This program is in the public domain.
+ *
+ * Brian Paul
+ *
+ * PPM output provided by Joerg Schmalzl.
+ * ASCII PPM output added by Brian Paul.
+ *
+ * Usage: osdemo [-perf] [filename]
+ *
+ * -perf: Redraws the image 1000 times, displaying the FPS every 5 secs.
+ * filename: file to store the TGA or PPM output
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "GL/osmesa.h"
+#include "GL/glut.h"
+
+
+#define SAVE_TARGA
+
+
+#define WIDTH 400
+#define HEIGHT 400
+
+static GLint T0 = 0;
+static GLint Frames = 0;
+static int perf = 0;
+
+static void render_image( void )
+{
+ GLfloat light_ambient[] = { 0.0, 0.0, 0.0, 1.0 };
+ GLfloat light_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
+ GLfloat light_specular[] = { 1.0, 1.0, 1.0, 1.0 };
+ GLfloat light_position[] = { 1.0, 1.0, 1.0, 0.0 };
+ GLfloat red_mat[] = { 1.0, 0.2, 0.2, 1.0 };
+ GLfloat green_mat[] = { 0.2, 1.0, 0.2, 1.0 };
+ GLfloat blue_mat[] = { 0.2, 0.2, 1.0, 1.0 };
+
+
+ glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
+ glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
+ glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
+ glLightfv(GL_LIGHT0, GL_POSITION, light_position);
+
+ glEnable(GL_LIGHTING);
+ glEnable(GL_LIGHT0);
+ glEnable(GL_DEPTH_TEST);
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(-2.5, 2.5, -2.5, 2.5, -10.0, 10.0);
+ glMatrixMode(GL_MODELVIEW);
+
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+ glPushMatrix();
+ glRotatef(20.0, 1.0, 0.0, 0.0);
+
+ glPushMatrix();
+ glTranslatef(-0.75, 0.5, 0.0);
+ glRotatef(90.0, 1.0, 0.0, 0.0);
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red_mat );
+ glutSolidTorus(0.275, 0.85, 20, 20);
+ glPopMatrix();
+
+ glPushMatrix();
+ glTranslatef(-0.75, -0.5, 0.0);
+ glRotatef(270.0, 1.0, 0.0, 0.0);
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, green_mat );
+ glutSolidCone(1.0, 2.0, 16, 1);
+ glPopMatrix();
+
+#ifdef GL_HP_occlusion_test
+ if (perf == 0) {
+ GLboolean bRet;
+ glDepthMask(GL_FALSE);
+ glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE);
+ glEnable(GL_OCCLUSION_TEST_HP);
+ glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
+
+ glPushMatrix();
+ glTranslatef(0.75, 0.0, -1.0);
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
+ glutSolidSphere(1.0, 20, 20);
+ glPopMatrix();
+
+ glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
+ printf("Occlusion test 1 (result should be 1): %d\n",bRet);
+
+ glDepthMask(GL_TRUE);
+ glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
+ glDisable(GL_OCCLUSION_TEST_HP);
+ }
+#endif
+
+ glPushMatrix();
+ glTranslatef(0.75, 0.0, -1.0);
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
+ glutSolidSphere(1.0, 20, 20);
+ glPopMatrix();
+
+#ifdef GL_HP_occlusion_test
+ if (perf == 0){
+ GLboolean bRet;
+
+ glDepthMask(GL_FALSE);
+ glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE);
+ glEnable(GL_OCCLUSION_TEST_HP);
+ glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
+
+ /* draw a sphere inside the previous sphere */
+ glPushMatrix();
+ glTranslatef(0.75, 0.0, -1.0);
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
+ glutSolidSphere(0.5, 20, 20);
+ glPopMatrix();
+
+ glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
+ printf("Occlusion test 2 (result should be 0): %d\n",bRet);
+
+ glDepthMask(GL_TRUE);
+ glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
+ glDisable(GL_OCCLUSION_TEST_HP);
+ }
+#endif
+
+ glPopMatrix();
+
+ /* This is very important!!!
+ * Make sure buffered commands are finished!!!
+ */
+ glFinish();
+
+ Frames++;
+ if (perf) {
+ GLint t = glutGet(GLUT_ELAPSED_TIME);
+ if (t - T0 >= 5000) {
+ GLfloat seconds = (t - T0) / 1000.0;
+ GLfloat fps = Frames / seconds;
+ printf("%d frames in %6.3f seconds = %6.3f FPS\n", Frames, seconds, fps);
+ T0 = t;
+ Frames = 0;
+ }
+ }
+}
+
+
+#ifdef SAVE_TARGA
+
+static void
+write_targa(const char *filename, const GLubyte *buffer, int width, int height)
+{
+ FILE *f = fopen( filename, "w" );
+ if (f) {
+ int i, x, y;
+ const GLubyte *ptr = buffer;
+ printf ("osdemo, writing tga file \n");
+ fputc (0x00, f); /* ID Length, 0 => No ID */
+ fputc (0x00, f); /* Color Map Type, 0 => No color map included */
+ fputc (0x02, f); /* Image Type, 2 => Uncompressed, True-color Image */
+ fputc (0x00, f); /* Next five bytes are about the color map entries */
+ fputc (0x00, f); /* 2 bytes Index, 2 bytes length, 1 byte size */
+ fputc (0x00, f);
+ fputc (0x00, f);
+ fputc (0x00, f);
+ fputc (0x00, f); /* X-origin of Image */
+ fputc (0x00, f);
+ fputc (0x00, f); /* Y-origin of Image */
+ fputc (0x00, f);
+ fputc (WIDTH & 0xff, f); /* Image Width */
+ fputc ((WIDTH>>8) & 0xff, f);
+ fputc (HEIGHT & 0xff, f); /* Image Height */
+ fputc ((HEIGHT>>8) & 0xff, f);
+ fputc (0x18, f); /* Pixel Depth, 0x18 => 24 Bits */
+ fputc (0x20, f); /* Image Descriptor */
+ fclose(f);
+ f = fopen( filename, "ab" ); /* reopen in binary append mode */
+ for (y=height-1; y>=0; y--) {
+ for (x=0; x<width; x++) {
+ i = (y*width + x) * 4;
+ fputc(ptr[i+2], f); /* write blue */
+ fputc(ptr[i+1], f); /* write green */
+ fputc(ptr[i], f); /* write red */
+ }
+ }
+ }
+}
+
+#else
+
+static void
+write_ppm(const char *filename, const GLubyte *buffer, int width, int height)
+{
+ const int binary = 0;
+ FILE *f = fopen( filename, "w" );
+ if (f) {
+ int i, x, y;
+ const GLubyte *ptr = buffer;
+ if (binary) {
+ fprintf(f,"P6\n");
+ fprintf(f,"# ppm-file created by osdemo.c\n");
+ fprintf(f,"%i %i\n", width,height);
+ fprintf(f,"255\n");
+ fclose(f);
+ f = fopen( filename, "ab" ); /* reopen in binary append mode */
+ for (y=height-1; y>=0; y--) {
+ for (x=0; x<width; x++) {
+ i = (y*width + x) * 4;
+ fputc(ptr[i], f); /* write red */
+ fputc(ptr[i+1], f); /* write green */
+ fputc(ptr[i+2], f); /* write blue */
+ }
+ }
+ }
+ else {
+ /*ASCII*/
+ int counter = 0;
+ fprintf(f,"P3\n");
+ fprintf(f,"# ascii ppm file created by osdemo.c\n");
+ fprintf(f,"%i %i\n", width, height);
+ fprintf(f,"255\n");
+ for (y=height-1; y>=0; y--) {
+ for (x=0; x<width; x++) {
+ i = (y*width + x) * 4;
+ fprintf(f, " %3d %3d %3d", ptr[i], ptr[i+1], ptr[i+2]);
+ counter++;
+ if (counter % 5 == 0)
+ fprintf(f, "\n");
+ }
+ }
+ }
+ fclose(f);
+ }
+}
+
+#endif
+
+
+
+int main( int argc, char *argv[] )
+{
+ void *buffer;
+ int i;
+ char *filename = NULL;
+
+ /* Create an RGBA-mode context */
+#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
+ /* specify Z, stencil, accum sizes */
+ OSMesaContext ctx = OSMesaCreateContextExt( OSMESA_RGBA, 16, 0, 0, NULL );
+#else
+ OSMesaContext ctx = OSMesaCreateContext( OSMESA_RGBA, NULL );
+#endif
+ if (!ctx) {
+ printf("OSMesaCreateContext failed!\n");
+ return 0;
+ }
+
+ for ( i=1; i<argc; i++ ) {
+ if (argv[i][0] != '-') filename = argv[i];
+ if (strcmp(argv[i], "-perf")==0) perf = 1;
+ }
+
+ /* Allocate the image buffer */
+ buffer = malloc( WIDTH * HEIGHT * 4 * sizeof(GLubyte) );
+ if (!buffer) {
+ printf("Alloc image buffer failed!\n");
+ return 0;
+ }
+
+ /* Bind the buffer to the context and make it current */
+ if (!OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_BYTE, WIDTH, HEIGHT )) {
+ printf("OSMesaMakeCurrent failed!\n");
+ return 0;
+ }
+
+
+ {
+ int z, s, a;
+ glGetIntegerv(GL_DEPTH_BITS, &z);
+ glGetIntegerv(GL_STENCIL_BITS, &s);
+ glGetIntegerv(GL_ACCUM_RED_BITS, &a);
+ printf("Depth=%d Stencil=%d Accum=%d\n", z, s, a);
+ }
+
+ render_image();
+ if (perf)
+ for(i=0; i< 1000; i++)
+ render_image();
+
+ if (filename != NULL) {
+#ifdef SAVE_TARGA
+ write_targa(filename, buffer, WIDTH, HEIGHT);
+#else
+ write_ppm(filename, buffer, WIDTH, HEIGHT);
+#endif
+ }
+ else {
+ printf("Specify a filename if you want to make an image file\n");
+ }
+
+ printf("all done\n");
+
+ /* free the image buffer */
+ free( buffer );
+
+ /* destroy the context */
+ OSMesaDestroyContext( ctx );
+
+ return 0;
+}
--- /dev/null
+/*
+ * Demo of off-screen Mesa rendering with 16-bit color channels.
+ * This requires the libOSMesa16.so library.
+ *
+ * Compile with something like this:
+ *
+ * gcc osdemo16.c -I../../include -L../../lib -lglut -lGLU -lOSMesa16 -lm -o osdemo16
+ */
+
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "GL/osmesa.h"
+#include "GL/glut.h"
+
+
+#define SAVE_TARGA
+
+
+#define WIDTH 400
+#define HEIGHT 400
+
+
+
+static void render_image( void )
+{
+ GLfloat light_ambient[] = { 0.0, 0.0, 0.0, 1.0 };
+ GLfloat light_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
+ GLfloat light_specular[] = { 1.0, 1.0, 1.0, 1.0 };
+ GLfloat light_position[] = { 1.0, 1.0, 1.0, 0.0 };
+ GLfloat red_mat[] = { 1.0, 0.2, 0.2, 1.0 };
+ GLfloat green_mat[] = { 0.2, 1.0, 0.2, 0.5 };
+ GLfloat blue_mat[] = { 0.2, 0.2, 1.0, 1.0 };
+ GLfloat white_mat[] = { 1.0, 1.0, 1.0, 1.0 };
+ GLfloat purple_mat[] = { 1.0, 0.2, 1.0, 1.0 };
+ GLUquadricObj *qobj = gluNewQuadric();
+
+ glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
+ glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
+ glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
+ glLightfv(GL_LIGHT0, GL_POSITION, light_position);
+
+ glEnable(GL_LIGHTING);
+ glEnable(GL_LIGHT0);
+ glEnable(GL_DEPTH_TEST);
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(-2.5, 2.5, -2.5, 2.5, -10.0, 10.0);
+ glMatrixMode(GL_MODELVIEW);
+
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+ glPushMatrix();
+ glRotatef(20.0, 1.0, 0.0, 0.0);
+
+#if 0
+ glPushMatrix();
+ glTranslatef(-0.75, 0.5, 0.0);
+ glRotatef(90.0, 1.0, 0.0, 0.0);
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red_mat );
+ glutSolidTorus(0.275, 0.85, 20, 20);
+ glPopMatrix();
+#endif
+
+ /* red square */
+ glPushMatrix();
+ glTranslatef(0.0, -0.5, 0.0);
+ glRotatef(90, 1, 0.5, 0);
+ glScalef(3, 3, 3);
+ glDisable(GL_LIGHTING);
+ glColor4f(1, 0, 0, 0.5);
+ glBegin(GL_POLYGON);
+ glVertex2f(-1, -1);
+ glVertex2f( 1, -1);
+ glVertex2f( 1, 1);
+ glVertex2f(-1, 1);
+ glEnd();
+ glEnable(GL_LIGHTING);
+ glPopMatrix();
+
+#if 0
+ /* green square */
+ glPushMatrix();
+ glTranslatef(0.0, 0.5, 0.1);
+ glDisable(GL_LIGHTING);
+ glColor3f(0, 1, 0);
+ glBegin(GL_POLYGON);
+ glVertex2f(-1, -1);
+ glVertex2f( 1, -1);
+ glVertex2f( 1, 1);
+ glVertex2f(-1, 1);
+ glEnd();
+ glEnable(GL_LIGHTING);
+ glPopMatrix();
+
+ /* blue square */
+ glPushMatrix();
+ glTranslatef(0.75, 0.5, 0.3);
+ glDisable(GL_LIGHTING);
+ glColor3f(0, 0, 0.5);
+ glBegin(GL_POLYGON);
+ glVertex2f(-1, -1);
+ glVertex2f( 1, -1);
+ glVertex2f( 1, 1);
+ glVertex2f(-1, 1);
+ glEnd();
+ glEnable(GL_LIGHTING);
+ glPopMatrix();
+#endif
+ glPushMatrix();
+ glTranslatef(-0.75, -0.5, 0.0);
+ glRotatef(270.0, 1.0, 0.0, 0.0);
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, green_mat );
+ glColor4f(0,1,0,0.5);
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ gluCylinder(qobj, 1.0, 0.0, 2.0, 16, 1);
+ glDisable(GL_BLEND);
+ glPopMatrix();
+
+ glPushMatrix();
+ glTranslatef(0.75, 1.0, 1.0);
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
+ gluSphere(qobj, 1.0, 20, 20);
+ glPopMatrix();
+
+ glPopMatrix();
+
+ /* This is very important!!!
+ * Make sure buffered commands are finished!!!
+ */
+ glFinish();
+
+ gluDeleteQuadric(qobj);
+
+ {
+ GLint 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("channel sizes: %d %d %d %d\n", r, g, b, a);
+ }
+}
+
+
+
+static void
+write_targa(const char *filename, const GLushort *buffer, int width, int height)
+{
+ FILE *f = fopen( filename, "w" );
+ if (f) {
+ int i, x, y;
+ const GLushort *ptr = buffer;
+ printf ("osdemo, writing tga file \n");
+ fputc (0x00, f); /* ID Length, 0 => No ID */
+ fputc (0x00, f); /* Color Map Type, 0 => No color map included */
+ fputc (0x02, f); /* Image Type, 2 => Uncompressed, True-color Image */
+ fputc (0x00, f); /* Next five bytes are about the color map entries */
+ fputc (0x00, f); /* 2 bytes Index, 2 bytes length, 1 byte size */
+ fputc (0x00, f);
+ fputc (0x00, f);
+ fputc (0x00, f);
+ fputc (0x00, f); /* X-origin of Image */
+ fputc (0x00, f);
+ fputc (0x00, f); /* Y-origin of Image */
+ fputc (0x00, f);
+ fputc (WIDTH & 0xff, f); /* Image Width */
+ fputc ((WIDTH>>8) & 0xff, f);
+ fputc (HEIGHT & 0xff, f); /* Image Height */
+ fputc ((HEIGHT>>8) & 0xff, f);
+ fputc (0x18, f); /* Pixel Depth, 0x18 => 24 Bits */
+ fputc (0x20, f); /* Image Descriptor */
+ fclose(f);
+ f = fopen( filename, "ab" ); /* reopen in binary append mode */
+ for (y=height-1; y>=0; y--) {
+ for (x=0; x<width; x++) {
+ i = (y*width + x) * 4;
+ /* just write 8 high bits */
+ fputc(ptr[i+2] >> 8, f); /* write blue */
+ fputc(ptr[i+1] >> 8, f); /* write green */
+ fputc(ptr[i] >> 8, f); /* write red */
+ }
+ }
+ }
+}
+
+
+static void
+write_ppm(const char *filename, const GLushort *buffer, int width, int height)
+{
+ const int binary = 0;
+ FILE *f = fopen( filename, "w" );
+ if (f) {
+ int i, x, y;
+ const GLushort *ptr = buffer;
+ if (binary) {
+ fprintf(f,"P6\n");
+ fprintf(f,"# ppm-file created by osdemo.c\n");
+ fprintf(f,"%i %i\n", width,height);
+ fprintf(f,"255\n");
+ fclose(f);
+ f = fopen( filename, "ab" ); /* reopen in binary append mode */
+ for (y=height-1; y>=0; y--) {
+ for (x=0; x<width; x++) {
+ i = (y*width + x) * 4;
+ /* just write 8 high bits */
+ fputc(ptr[i] >> 8, f); /* write red */
+ fputc(ptr[i+1] >> 8, f); /* write green */
+ fputc(ptr[i+2] >> 8, f); /* write blue */
+ }
+ }
+ }
+ else {
+ /*ASCII*/
+ int counter = 0;
+ fprintf(f,"P3\n");
+ fprintf(f,"# ascii ppm file created by osdemo.c\n");
+ fprintf(f,"%i %i\n", width, height);
+ fprintf(f,"255\n");
+ for (y=height-1; y>=0; y--) {
+ for (x=0; x<width; x++) {
+ i = (y*width + x) * 4;
+ /* just write 8 high bits */
+ fprintf(f, " %3d %3d %3d", ptr[i] >> 8, ptr[i+1] >> 8, ptr[i+2] >> 8);
+ counter++;
+ if (counter % 5 == 0)
+ fprintf(f, "\n");
+ }
+ }
+ }
+ fclose(f);
+ }
+}
+
+
+
+int main( int argc, char *argv[] )
+{
+ GLushort *buffer;
+
+ /* Create an RGBA-mode context */
+#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
+ /* specify Z, stencil, accum sizes */
+ OSMesaContext ctx = OSMesaCreateContextExt( GL_RGBA, 16, 0, 0, NULL );
+#else
+ OSMesaContext ctx = OSMesaCreateContext( GL_RGBA, NULL );
+#endif
+ if (!ctx) {
+ printf("OSMesaCreateContext failed!\n");
+ return 0;
+ }
+
+ /* Allocate the image buffer */
+ buffer = (GLushort *) malloc( WIDTH * HEIGHT * 4 * sizeof(GLushort));
+ if (!buffer) {
+ printf("Alloc image buffer failed!\n");
+ return 0;
+ }
+
+ /* Bind the buffer to the context and make it current */
+ if (!OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_SHORT, WIDTH, HEIGHT )) {
+ printf("OSMesaMakeCurrent failed!\n");
+ return 0;
+ }
+
+ render_image();
+
+ if (argc>1) {
+#ifdef SAVE_TARGA
+ write_targa(argv[1], buffer, WIDTH, HEIGHT);
+#else
+ write_ppm(argv[1], buffer, WIDTH, HEIGHT);
+#endif
+ }
+ else {
+ printf("Specify a filename if you want to make an image file\n");
+ }
+
+ printf("all done\n");
+
+ /* free the image buffer */
+ free( buffer );
+
+ /* destroy the context */
+ OSMesaDestroyContext( ctx );
+
+ return 0;
+}
--- /dev/null
+/*
+ * Demo of off-screen Mesa rendering with 32-bit float color channels.
+ * This requires the libOSMesa32.so library.
+ *
+ * Compile with something like this:
+ *
+ * gcc osdemo32.c -I../../include -L../../lib -lglut -lGLU -lOSMesa32 -lm -o osdemo32
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "GL/osmesa.h"
+#include "GL/glut.h"
+
+
+#define SAVE_TARGA
+
+
+#define WIDTH 400
+#define HEIGHT 400
+
+
+
+static void render_image( void )
+{
+ GLfloat light_ambient[] = { 0.0, 0.0, 0.0, 1.0 };
+ GLfloat light_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
+ GLfloat light_specular[] = { 1.0, 1.0, 1.0, 1.0 };
+ GLfloat light_position[] = { 1.0, 1.0, 1.0, 0.0 };
+ GLfloat red_mat[] = { 1.0, 0.2, 0.2, 1.0 };
+ GLfloat green_mat[] = { 0.2, 1.0, 0.2, 0.5 };
+ GLfloat blue_mat[] = { 0.2, 0.2, 1.0, 1.0 };
+ GLfloat white_mat[] = { 1.0, 1.0, 1.0, 1.0 };
+ GLfloat purple_mat[] = { 1.0, 0.2, 1.0, 1.0 };
+ GLUquadricObj *qobj = gluNewQuadric();
+
+ glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
+ glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
+ glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
+ glLightfv(GL_LIGHT0, GL_POSITION, light_position);
+
+ glEnable(GL_LIGHTING);
+ glEnable(GL_LIGHT0);
+ glEnable(GL_DEPTH_TEST);
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(-2.5, 2.5, -2.5, 2.5, -10.0, 10.0);
+ glMatrixMode(GL_MODELVIEW);
+
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+ glPushMatrix();
+ glRotatef(20.0, 1.0, 0.0, 0.0);
+
+#if 0
+ glPushMatrix();
+ glTranslatef(-0.75, 0.5, 0.0);
+ glRotatef(90.0, 1.0, 0.0, 0.0);
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red_mat );
+ glutSolidTorus(0.275, 0.85, 20, 20);
+ glPopMatrix();
+#endif
+
+ /* red square */
+ glPushMatrix();
+ glTranslatef(0.0, -0.5, 0.0);
+ glRotatef(90, 1, 0.5, 0);
+ glScalef(3, 3, 3);
+ glDisable(GL_LIGHTING);
+ glColor4f(1, 0, 0, 0.5);
+ glBegin(GL_POLYGON);
+ glVertex2f(-1, -1);
+ glVertex2f( 1, -1);
+ glVertex2f( 1, 1);
+ glVertex2f(-1, 1);
+ glEnd();
+ glEnable(GL_LIGHTING);
+ glPopMatrix();
+
+#if 0
+ /* green square */
+ glPushMatrix();
+ glTranslatef(0.0, 0.5, 0.1);
+ glDisable(GL_LIGHTING);
+ glColor3f(0, 1, 0);
+ glBegin(GL_POLYGON);
+ glVertex2f(-1, -1);
+ glVertex2f( 1, -1);
+ glVertex2f( 1, 1);
+ glVertex2f(-1, 1);
+ glEnd();
+ glEnable(GL_LIGHTING);
+ glPopMatrix();
+
+ /* blue square */
+ glPushMatrix();
+ glTranslatef(0.75, 0.5, 0.3);
+ glDisable(GL_LIGHTING);
+ glColor3f(0, 0, 0.5);
+ glBegin(GL_POLYGON);
+ glVertex2f(-1, -1);
+ glVertex2f( 1, -1);
+ glVertex2f( 1, 1);
+ glVertex2f(-1, 1);
+ glEnd();
+ glEnable(GL_LIGHTING);
+ glPopMatrix();
+#endif
+ glPushMatrix();
+ glTranslatef(-0.75, -0.5, 0.0);
+ glRotatef(270.0, 1.0, 0.0, 0.0);
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, green_mat );
+ glColor4f(0,1,0,0.5);
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ gluCylinder(qobj, 1.0, 0.0, 2.0, 16, 1);
+ glDisable(GL_BLEND);
+ glPopMatrix();
+
+ glPushMatrix();
+ glTranslatef(0.75, 1.0, 1.0);
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
+ gluSphere(qobj, 1.0, 20, 20);
+ glPopMatrix();
+
+ glPopMatrix();
+
+ /* This is very important!!!
+ * Make sure buffered commands are finished!!!
+ */
+ glFinish();
+
+ gluDeleteQuadric(qobj);
+
+ {
+ GLint 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("channel sizes: %d %d %d %d\n", r, g, b, a);
+ }
+}
+
+
+
+static void
+write_targa(const char *filename, const GLfloat *buffer, int width, int height)
+{
+ FILE *f = fopen( filename, "w" );
+ if (f) {
+ int i, x, y;
+ const GLfloat *ptr = buffer;
+ printf ("osdemo, writing tga file \n");
+ fputc (0x00, f); /* ID Length, 0 => No ID */
+ fputc (0x00, f); /* Color Map Type, 0 => No color map included */
+ fputc (0x02, f); /* Image Type, 2 => Uncompressed, True-color Image */
+ fputc (0x00, f); /* Next five bytes are about the color map entries */
+ fputc (0x00, f); /* 2 bytes Index, 2 bytes length, 1 byte size */
+ fputc (0x00, f);
+ fputc (0x00, f);
+ fputc (0x00, f);
+ fputc (0x00, f); /* X-origin of Image */
+ fputc (0x00, f);
+ fputc (0x00, f); /* Y-origin of Image */
+ fputc (0x00, f);
+ fputc (WIDTH & 0xff, f); /* Image Width */
+ fputc ((WIDTH>>8) & 0xff, f);
+ fputc (HEIGHT & 0xff, f); /* Image Height */
+ fputc ((HEIGHT>>8) & 0xff, f);
+ fputc (0x18, f); /* Pixel Depth, 0x18 => 24 Bits */
+ fputc (0x20, f); /* Image Descriptor */
+ fclose(f);
+ f = fopen( filename, "ab" ); /* reopen in binary append mode */
+ for (y=height-1; y>=0; y--) {
+ for (x=0; x<width; x++) {
+ int r, g, b;
+ i = (y*width + x) * 4;
+ r = (int) (ptr[i+0] * 255.0);
+ g = (int) (ptr[i+1] * 255.0);
+ b = (int) (ptr[i+2] * 255.0);
+ if (r > 255) r = 255;
+ if (g > 255) g = 255;
+ if (b > 255) b = 255;
+ fputc(b, f); /* write blue */
+ fputc(g, f); /* write green */
+ fputc(r, f); /* write red */
+ }
+ }
+ }
+}
+
+
+static void
+write_ppm(const char *filename, const GLfloat *buffer, int width, int height)
+{
+ const int binary = 0;
+ FILE *f = fopen( filename, "w" );
+ if (f) {
+ int i, x, y;
+ const GLfloat *ptr = buffer;
+ if (binary) {
+ fprintf(f,"P6\n");
+ fprintf(f,"# ppm-file created by osdemo.c\n");
+ fprintf(f,"%i %i\n", width,height);
+ fprintf(f,"255\n");
+ fclose(f);
+ f = fopen( filename, "ab" ); /* reopen in binary append mode */
+ for (y=height-1; y>=0; y--) {
+ for (x=0; x<width; x++) {
+ int r, g, b;
+ i = (y*width + x) * 4;
+ r = (int) (ptr[i+0] * 255.0);
+ g = (int) (ptr[i+1] * 255.0);
+ b = (int) (ptr[i+2] * 255.0);
+ if (r > 255) r = 255;
+ if (g > 255) g = 255;
+ if (b > 255) b = 255;
+ fputc(r, f); /* write red */
+ fputc(g, f); /* write green */
+ fputc(b, f); /* write blue */
+ }
+ }
+ }
+ else {
+ /*ASCII*/
+ int counter = 0;
+ fprintf(f,"P3\n");
+ fprintf(f,"# ascii ppm file created by osdemo.c\n");
+ fprintf(f,"%i %i\n", width, height);
+ fprintf(f,"255\n");
+ for (y=height-1; y>=0; y--) {
+ for (x=0; x<width; x++) {
+ int r, g, b;
+ i = (y*width + x) * 4;
+ r = (int) (ptr[i+0] * 255.0);
+ g = (int) (ptr[i+1] * 255.0);
+ b = (int) (ptr[i+2] * 255.0);
+ if (r > 255) r = 255;
+ if (g > 255) g = 255;
+ if (b > 255) b = 255;
+ fprintf(f, " %3d %3d %3d", r, g, b);
+ counter++;
+ if (counter % 5 == 0)
+ fprintf(f, "\n");
+ }
+ }
+ }
+ fclose(f);
+ }
+}
+
+
+
+int main( int argc, char *argv[] )
+{
+ GLfloat *buffer;
+
+ /* Create an RGBA-mode context */
+#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
+ /* specify Z, stencil, accum sizes */
+ OSMesaContext ctx = OSMesaCreateContextExt( GL_RGBA, 16, 0, 0, NULL );
+#else
+ OSMesaContext ctx = OSMesaCreateContext( GL_RGBA, NULL );
+#endif
+ if (!ctx) {
+ printf("OSMesaCreateContext failed!\n");
+ return 0;
+ }
+
+ /* Allocate the image buffer */
+ buffer = (GLfloat *) malloc( WIDTH * HEIGHT * 4 * sizeof(GLfloat));
+ if (!buffer) {
+ printf("Alloc image buffer failed!\n");
+ return 0;
+ }
+
+ /* Bind the buffer to the context and make it current */
+ if (!OSMesaMakeCurrent( ctx, buffer, GL_FLOAT, WIDTH, HEIGHT )) {
+ printf("OSMesaMakeCurrent failed!\n");
+ return 0;
+ }
+
+ render_image();
+
+ if (argc>1) {
+#ifdef SAVE_TARGA
+ write_targa(argv[1], buffer, WIDTH, HEIGHT);
+#else
+ write_ppm(argv[1], buffer, WIDTH, HEIGHT);
+#endif
+ }
+ else {
+ printf("Specify a filename if you want to make an image file\n");
+ }
+
+ printf("all done\n");
+
+ /* free the image buffer */
+ free( buffer );
+
+ /* destroy the context */
+ OSMesaDestroyContext( ctx );
+
+ return 0;
+}
projects / mesa.git / commitdiff