summaryrefslogtreecommitdiff
path: root/progs/miniglx/manytex.c
diff options
context:
space:
mode:
Diffstat (limited to 'progs/miniglx/manytex.c')
-rw-r--r--progs/miniglx/manytex.c381
1 files changed, 0 insertions, 381 deletions
diff --git a/progs/miniglx/manytex.c b/progs/miniglx/manytex.c
deleted file mode 100644
index 74b06649f6..0000000000
--- a/progs/miniglx/manytex.c
+++ /dev/null
@@ -1,381 +0,0 @@
-
-/*
- * test handling of many texture maps
- * Also tests texture priority and residency.
- *
- * Brian Paul
- * August 2, 2000
- */
-
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-#include <GL/glut.h>
-
-
-static GLint NumTextures = 20;
-static GLuint *TextureID = NULL;
-static GLint *TextureWidth = NULL, *TextureHeight = NULL;
-static GLboolean *TextureResidency = NULL;
-static GLint TexWidth = 128, TexHeight = 128;
-static GLfloat Zrot = 0;
-static GLboolean Anim = GL_TRUE;
-static GLint WinWidth = 500, WinHeight = 400;
-static GLboolean MipMap = GL_FALSE;
-static GLboolean LinearFilter = GL_FALSE;
-static GLboolean RandomSize = GL_FALSE;
-static GLint Rows, Columns;
-static GLint LowPriorityCount = 0;
-
-
-static void Idle( void )
-{
- Zrot += 1.0;
- glutPostRedisplay();
-}
-
-
-static void Display( void )
-{
- GLfloat spacing = WinWidth / Columns;
- GLfloat size = spacing * 0.4;
- GLint i;
-
- /* test residency */
- if (0)
- {
- GLboolean b;
- GLint i, resident;
- b = glAreTexturesResident(NumTextures, TextureID, TextureResidency);
- if (b) {
- printf("all resident\n");
- }
- else {
- resident = 0;
- for (i = 0; i < NumTextures; i++) {
- if (TextureResidency[i]) {
- resident++;
- }
- }
- printf("%d of %d texture resident\n", resident, NumTextures);
- }
- }
-
- /* render the textured quads */
- glClear( GL_COLOR_BUFFER_BIT );
- for (i = 0; i < NumTextures; i++) {
- GLint row = i / Columns;
- GLint col = i % Columns;
- GLfloat x = col * spacing + spacing * 0.5;
- GLfloat y = row * spacing + spacing * 0.5;
-
- GLfloat maxDim = (TextureWidth[i] > TextureHeight[i])
- ? TextureWidth[i] : TextureHeight[i];
- GLfloat w = TextureWidth[i] / maxDim;
- GLfloat h = TextureHeight[i] / maxDim;
-
- glPushMatrix();
- glTranslatef(x, y, 0.0);
- glRotatef(Zrot, 0, 0, 1);
- glScalef(size, size, 1);
-
- glBindTexture(GL_TEXTURE_2D, TextureID[i]);
- glBegin(GL_POLYGON);
-#if 0
- glTexCoord2f(0, 0); glVertex2f(-1, -1);
- glTexCoord2f(1, 0); glVertex2f( 1, -1);
- glTexCoord2f(1, 1); glVertex2f( 1, 1);
- glTexCoord2f(0, 1); glVertex2f(-1, 1);
-#else
- glTexCoord2f(0, 0); glVertex2f(-w, -h);
- glTexCoord2f(1, 0); glVertex2f( w, -h);
- glTexCoord2f(1, 1); glVertex2f( w, h);
- glTexCoord2f(0, 1); glVertex2f(-w, h);
-#endif
- glEnd();
- glPopMatrix();
- }
-
- glutSwapBuffers();
-}
-
-
-static void Reshape( int width, int height )
-{
- WinWidth = width;
- WinHeight = height;
- glViewport( 0, 0, width, height );
- glMatrixMode( GL_PROJECTION );
- glLoadIdentity();
- glOrtho(0, width, 0, height, -1, 1);
- glMatrixMode( GL_MODELVIEW );
- glLoadIdentity();
-}
-
-
-/*
- * Return a random int in [min, max].
- */
-static int RandomInt(int min, int max)
-{
- int i = rand();
- int j = i % (max - min + 1);
- return min + j;
-}
-
-
-
-static void Init( void )
-{
- GLint i;
-
- if (RandomSize) {
- printf("Creating %d %s random-size textures, ", NumTextures,
- MipMap ? "Mipmapped" : "non-Mipmapped");
- }
- else {
- printf("Creating %d %s %d x %d textures, ", NumTextures,
- MipMap ? "Mipmapped" : "non-Mipmapped",
- TexWidth, TexHeight);
- }
-
- if (LinearFilter) {
- printf("bilinear filtering\n");
- }
- else {
- printf("nearest filtering\n");
- }
-
-
- /* compute number of rows and columns of rects */
- {
- GLfloat area = (GLfloat) (WinWidth * WinHeight) / (GLfloat) NumTextures;
- GLfloat edgeLen = sqrt(area);
-
- Columns = WinWidth / edgeLen;
- Rows = (NumTextures + Columns - 1) / Columns;
- printf("Rows: %d Cols: %d\n", Rows, Columns);
- }
-
-
- if (!TextureID) {
- TextureID = (GLuint *) malloc(sizeof(GLuint) * NumTextures);
- assert(TextureID);
- glGenTextures(NumTextures, TextureID);
- }
-
- if (!TextureResidency) {
- TextureResidency = (GLboolean *) malloc(sizeof(GLboolean) * NumTextures);
- assert(TextureResidency);
- }
-
- if (!TextureWidth) {
- TextureWidth = (GLint *) malloc(sizeof(GLint) * NumTextures);
- assert(TextureWidth);
- }
- if (!TextureHeight) {
- TextureHeight = (GLint *) malloc(sizeof(GLint) * NumTextures);
- assert(TextureHeight);
- }
-
- for (i = 0; i < NumTextures; i++) {
- GLubyte color[4];
- GLubyte *texImage;
- GLint j, row, col;
-
- row = i / Columns;
- col = i % Columns;
-
- glBindTexture(GL_TEXTURE_2D, TextureID[i]);
-
- if (i < LowPriorityCount)
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_PRIORITY, 0.5F);
-
- if (RandomSize) {
-#if 0
- int k = (glutGet(GLUT_ELAPSED_TIME) % 7) + 2;
- TexWidth = 1 << k;
- TexHeight = 1 << k;
-#else
- TexWidth = 1 << RandomInt(2, 7);
- TexHeight = 1 << RandomInt(2, 7);
- printf("Random size of %3d: %d x %d\n", i, TexWidth, TexHeight);
-#endif
- }
-
- TextureWidth[i] = TexWidth;
- TextureHeight[i] = TexHeight;
-
- texImage = (GLubyte*) malloc(4 * TexWidth * TexHeight * sizeof(GLubyte));
- assert(texImage);
-
- /* determine texture color */
- color[0] = (GLint) (255.0 * ((float) col / (Columns - 1)));
- color[1] = 127;
- color[2] = (GLint) (255.0 * ((float) row / (Rows - 1)));
- color[3] = 255;
-
- /* fill in solid-colored teximage */
- for (j = 0; j < TexWidth * TexHeight; j++) {
- texImage[j*4+0] = color[0];
- texImage[j*4+1] = color[1];
- texImage[j*4+2] = color[2];
- texImage[j*4+3] = color[3];
- }
-
- if (MipMap) {
- GLint level = 0;
- GLint w = TexWidth, h = TexHeight;
- while (1) {
- glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, w, h, 0,
- GL_RGBA, GL_UNSIGNED_BYTE, texImage);
- if (w == 1 && h == 1)
- break;
- if (w > 1)
- w /= 2;
- if (h > 1)
- h /= 2;
- level++;
- /*printf("%d: %d x %d\n", level, w, h);*/
- }
- if (LinearFilter) {
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
- GL_LINEAR_MIPMAP_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- }
- else {
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
- GL_NEAREST_MIPMAP_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- }
- }
- else {
- /* Set corners to white */
- int k = 0;
- texImage[k+0] = texImage[k+1] = texImage[k+2] = texImage[k+3] = 255;
- k = (TexWidth - 1) * 4;
- texImage[k+0] = texImage[k+1] = texImage[k+2] = texImage[k+3] = 255;
- k = (TexWidth * TexHeight - TexWidth) * 4;
- texImage[k+0] = texImage[k+1] = texImage[k+2] = texImage[k+3] = 255;
- k = (TexWidth * TexHeight - 1) * 4;
- texImage[k+0] = texImage[k+1] = texImage[k+2] = texImage[k+3] = 255;
-
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, TexWidth, TexHeight, 0,
- GL_RGBA, GL_UNSIGNED_BYTE, texImage);
- if (LinearFilter) {
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- }
- else {
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- }
- }
-
- free(texImage);
- }
-
- glEnable(GL_TEXTURE_2D);
-}
-
-
-static void Key( unsigned char key, int x, int y )
-{
- const GLfloat step = 3.0;
- (void) x;
- (void) y;
- switch (key) {
- case 'a':
- Anim = !Anim;
- if (Anim)
- glutIdleFunc(Idle);
- else
- glutIdleFunc(NULL);
- break;
- case 's':
- Idle();
- break;
- case 'z':
- Zrot -= step;
- break;
- case 'Z':
- Zrot += step;
- break;
- case ' ':
- Init();
- break;
- case 27:
- exit(0);
- break;
- }
- glutPostRedisplay();
-}
-
-
-int main( int argc, char *argv[] )
-{
- GLint i;
-
- glutInit( &argc, argv );
- glutInitWindowPosition( 0, 0 );
- glutInitWindowSize( WinWidth, WinHeight );
- glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
- glutCreateWindow(argv[0]);
- glutReshapeFunc( Reshape );
- glutKeyboardFunc( Key );
- glutDisplayFunc( Display );
- if (Anim)
- glutIdleFunc(Idle);
-
- for (i = 1; i < argc; i++) {
- if (strcmp(argv[i], "-n") == 0) {
- NumTextures = atoi(argv[i+1]);
- if (NumTextures <= 0) {
- printf("Error, bad number of textures\n");
- return 1;
- }
- i++;
- }
- else if (strcmp(argv[i], "-mipmap") == 0) {
- MipMap = GL_TRUE;
- }
- else if (strcmp(argv[i], "-linear") == 0) {
- LinearFilter = GL_TRUE;
- }
- else if (strcmp(argv[i], "-size") == 0) {
- TexWidth = atoi(argv[i+1]);
- TexHeight = atoi(argv[i+2]);
- assert(TexWidth >= 1);
- assert(TexHeight >= 1);
- i += 2;
- }
- else if (strcmp(argv[i], "-randomsize") == 0) {
- RandomSize = GL_TRUE;
- }
- else if (strcmp(argv[i], "-lowpri") == 0) {
- LowPriorityCount = atoi(argv[i+1]);
- i++;
- }
- else {
- printf("Usage:\n");
- printf(" manytex [options]\n");
- printf("Options:\n");
- printf(" -n <number of texture objects>\n");
- printf(" -size <width> <height> - specify texture size\n");
- printf(" -randomsize - use random size textures\n");
- printf(" -mipmap - generate mipmaps\n");
- printf(" -linear - use linear filtering instead of nearest\n");
- printf(" -lowpri <n> - Set lower priority on <n> textures\n");
- return 0;
- }
- }
-
- Init();
-
- glutMainLoop();
-
- return 0;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 01:04:41 +0000