Attachment 10022 Details for Bug 10999 – the case

the case

paletted_tex1.c (text/plain), 3.95 KB, created by Wei Wang on 2007-05-18 18:13:59 UTC

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Creator: Wei Wang

Created: 2007-05-18 18:13:59 UTC

Size: 3.95 KB

patch

obsolete

>
>/* Wei Wang <wei.z.wang@intel.com> */
>
>#include <stdlib.h>
>#include <GL/glut.h>
>#include <string.h>
>#include <stdio.h>
>#include <unistd.h>
>#include <stdlib.h>
>
>#define WIN_WIDTH   128
>#define WIN_HEIGHT  128
>#define SKIP_ROWS   0
>#define SKIP_PIXELS 0
>#define BITMAP_TOTAL_W  8*2
>#define BITMAP_TOTAL_H  8*2
>#define ALIGN 1
>
>typedef struct _bitmap_t {
>	GLint total_w;
>	GLint total_h;
>	GLubyte *data;
>} bitmap_t;
>
>/* Global Vars */
>static bitmap_t mybitmap;
>static bitmap_t output_bitmap;
>static GLint row_len;
>
>static GLfloat i2rMapF[] = {1,1};
>static GLfloat i2gMapF[] = {1,0};
>static GLfloat i2bMapF[] = {1,0};
>static GLfloat i2aMapF[] = {1,1};
>
>void print_bitmap_data(bitmap_t *bitmap)
>{
>	int i, j;
>	printf("\n--------Dumping Bitmap Data--------\n");
>	for (i = 0; i < bitmap->total_h; i++) {
>		printf("[%.2X]  ", i);
>		for (j = 0; j < (bitmap->total_w/8); j++) {
>			printf("%.2X ", bitmap->data[(bitmap->total_w/8) * i + j]);
>		}
>		printf("\n");
>	}
>	printf("\n-----------------------------------\n");
>}
>
>
>
>int gen_bitmap(bitmap_t *bitmap, GLint totalW, GLint totalH)
>{
>	GLint total_width, total_height;
>	GLint i, j;
>	GLubyte *data = NULL;
>	int tmp;
>
>	total_width = 8 * ((totalW + 7) / 8);
>	total_height = totalH;
>
>	data = (GLubyte *)malloc(total_width/8 * total_height);
>	if (! data)
>		return -1;
>
>	for (i = 0; i < total_height; i++) {
>		for (j = 0; j < (total_width/8); j++) {
>			data[(total_width/8) * i + j] = (GLubyte) rand();
>		}
>	}
>
>	bitmap->data = data;
>	bitmap->total_w = total_width;
>	bitmap->total_h = total_height;
>
>	return 0;
>}
>
>
>
>void destroy_bitmap(bitmap_t *bitmap)
>{
>	if (bitmap->data)
>		free(bitmap->data);
>}
>
>
>void zero_bitmap_data(bitmap_t *bitmap)
>{
>	memset(bitmap->data, 0, bitmap->total_w/8 * bitmap->total_h);
>}
>
>
>void display(void)
>{
>
>	glClear (GL_COLOR_BUFFER_BIT);
>
>	print_bitmap_data(&mybitmap);
>
>	glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
>	glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
>	glPixelStorei(GL_UNPACK_ROW_LENGTH, row_len);
>	glPixelStorei(GL_UNPACK_ALIGNMENT, ALIGN);
>	glPixelStorei(GL_UNPACK_SKIP_ROWS, SKIP_ROWS);
>	glPixelStorei(GL_UNPACK_SKIP_PIXELS, SKIP_PIXELS);
>
>	/* only draw the bitmap picture */
>        glRasterPos2f(0.25, 0.25);
>        glDrawPixels(mybitmap.total_w, mybitmap.total_h, 
>			GL_COLOR_INDEX, GL_BITMAP, mybitmap.data);
>
>	glTexImage2D(GL_TEXTURE_2D, 0, GL_COLOR_INDEX1_EXT, mybitmap.total_w,
>			mybitmap.total_h, 0, GL_COLOR_INDEX, GL_BITMAP, 
>			mybitmap.data);
>	zero_bitmap_data(&output_bitmap);
>	glGetTexImage(GL_TEXTURE_2D, 0, GL_COLOR_INDEX, GL_BITMAP, 
>		      output_bitmap.data);
>	print_bitmap_data(&output_bitmap);
>	glPopClientAttrib();
>
>	glFlush ();
>
>	destroy_bitmap(&mybitmap);
>	destroy_bitmap(&output_bitmap);
>}
>
>
>
>
>
>void init (void)
>{
>
>	if (strstr(glGetString(GL_EXTENSIONS), "GL_EXT_paletted_texture") == NULL) {
>		fprintf(stderr, "E: GL_EXT_paletted_texture is not supported.\n");
>		exit(0);
>	}
>
>	glMatrixMode(GL_PROJECTION);
>	glLoadIdentity();
>	glTranslatef(-1.0, -1.0, 0.0);
>	glScalef(2.0/WIN_WIDTH, 2.0/WIN_HEIGHT, 1.0);
>
>	glDisable(GL_DITHER);
>	glClearColor (1.0, 0.0, 1.0, 1.0);
>	glShadeModel (GL_FLAT);
>
>	gen_bitmap(&mybitmap, BITMAP_TOTAL_W, BITMAP_TOTAL_H);
>	gen_bitmap(&output_bitmap, BITMAP_TOTAL_W, BITMAP_TOTAL_H);
>
>	row_len = BITMAP_TOTAL_W;
>
>	glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 8, i2rMapF);
>	glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 8, i2gMapF);
>	glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 8, i2bMapF);
>	glPixelMapfv(GL_PIXEL_MAP_I_TO_A, 8, i2aMapF);
>}
>
>
>
>
>
>
>
>static void key(unsigned char k, int x, int y)
>{
>	switch (k) {
>	case 27:  /* Escape */
>		exit(0);
>		break;
>	default:
>		break;
>	}
>	glutPostRedisplay();
>}
>
>
>
>int main(int argc, char** argv)
>{
>	glutInit(&argc, argv);
>	glutInitDisplayMode (GLUT_SINGLE | GLUT_RGBA);
>	glutInitWindowSize (100, 100);
>	glutCreateWindow (argv[0]);
>	init ();
>	glutDisplayFunc(display);
>	glutKeyboardFunc(key);
>	glutMainLoop();
>	return 0;
>}

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Attachments on bug 10999: 10022

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