summaryrefslogtreecommitdiff
path: root/progs/tests/packedpixels.c
diff options
context:
space:
mode:
Diffstat (limited to 'progs/tests/packedpixels.c')
-rw-r--r--progs/tests/packedpixels.c377
1 files changed, 0 insertions, 377 deletions
diff --git a/progs/tests/packedpixels.c b/progs/tests/packedpixels.c
deleted file mode 100644
index 34df95549a..0000000000
--- a/progs/tests/packedpixels.c
+++ /dev/null
@@ -1,377 +0,0 @@
-/*
- * Test packed pixel formats for textures.
- * Brian Paul
- * 12 May 2004
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <string.h>
-#include <GL/glew.h>
-#include <GL/glut.h>
-
-
-struct pixel_format {
- const char *name;
- GLenum format;
- GLenum type;
- GLint bytes;
- GLuint redTexel, greenTexel; /* with approx 51% alpha, when applicable */
-};
-
-static const struct pixel_format Formats[] = {
-
- { "GL_RGBA/GL_UNSIGNED_INT_8_8_8_8",
- GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, 4, 0xff000080, 0x00ff0080 },
- { "GL_RGBA/GL_UNSIGNED_INT_8_8_8_8_REV",
- GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, 4, 0x800000ff, 0x8000ff00 },
- { "GL_RGBA/GL_UNSIGNED_INT_10_10_10_2",
- GL_RGBA, GL_UNSIGNED_INT_10_10_10_2, 4, 0xffc00002, 0x3ff002 },
- { "GL_RGBA/GL_UNSIGNED_INT_2_10_10_10_REV",
- GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, 4, 0xc00003ff, 0xc00ffc00 },
- { "GL_RGBA/GL_UNSIGNED_SHORT_4_4_4_4",
- GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, 2, 0xf008, 0x0f08 },
- { "GL_RGBA/GL_UNSIGNED_SHORT_4_4_4_4_REV",
- GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4_REV, 2, 0x800f, 0x80f0 },
- { "GL_RGBA/GL_UNSIGNED_SHORT_5_5_5_1",
- GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, 2, 0xf801, 0x7c1 },
- { "GL_RGBA/GL_UNSIGNED_SHORT_1_5_5_5_REV",
- GL_RGBA, GL_UNSIGNED_SHORT_1_5_5_5_REV, 2, 0x801f, 0x83e0 },
-
- { "GL_BGRA/GL_UNSIGNED_INT_8_8_8_8",
- GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, 4, 0x0000ff80, 0x00ff0080 },
- { "GL_BGRA/GL_UNSIGNED_INT_8_8_8_8_REV",
- GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, 4, 0x80ff0000, 0x8000ff00 },
- { "GL_BGRA/GL_UNSIGNED_SHORT_4_4_4_4",
- GL_BGRA, GL_UNSIGNED_SHORT_4_4_4_4, 2, 0x00f8, 0x0f08 },
- { "GL_BGRA/GL_UNSIGNED_SHORT_4_4_4_4_REV",
- GL_BGRA, GL_UNSIGNED_SHORT_4_4_4_4_REV, 2, 0x8f00, 0x80f0 },
- { "GL_BGRA/GL_UNSIGNED_SHORT_5_5_5_1",
- GL_BGRA, GL_UNSIGNED_SHORT_5_5_5_1, 2, 0x3f, 0x7c1 },
- { "GL_BGRA/GL_UNSIGNED_SHORT_1_5_5_5_REV",
- GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5_REV, 2, 0xfc00, 0x83e0 },
-
- { "GL_ABGR_EXT/GL_UNSIGNED_INT_8_8_8_8",
- GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8, 4, 0x800000ff, 0x8000ff00 },
- { "GL_ABGR_EXT/GL_UNSIGNED_INT_8_8_8_8_REV",
- GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, 4, 0xff000080, 0x00ff0080 },
- { "GL_ABGR_EXT/GL_UNSIGNED_SHORT_4_4_4_4",
- GL_ABGR_EXT, GL_UNSIGNED_SHORT_4_4_4_4, 2, 0x800f, 0x80f0 },
- { "GL_ABGR_EXT/GL_UNSIGNED_SHORT_4_4_4_4_REV",
- GL_ABGR_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV, 2, 0xf008, 0x0f08 },
- { "GL_ABGR_EXT/GL_UNSIGNED_SHORT_5_5_5_1",
- GL_ABGR_EXT, GL_UNSIGNED_SHORT_5_5_5_1, 2, 0xf801, 0xf83e },
- { "GL_ABGR_EXT/GL_UNSIGNED_SHORT_1_5_5_5_REV",
- GL_ABGR_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV, 2, 0x800f, 0x7c0f },
-
- { "GL_RGB/GL_UNSIGNED_SHORT_5_6_5",
- GL_RGB, GL_UNSIGNED_SHORT_5_6_5, 2, 0xf800, 0x7e0 },
- { "GL_RGB/GL_UNSIGNED_SHORT_5_6_5_REV",
- GL_RGB, GL_UNSIGNED_SHORT_5_6_5_REV, 2, 0x1f, 0x7e0 },
- { "GL_RGB/GL_UNSIGNED_BYTE_3_3_2",
- GL_RGB, GL_UNSIGNED_BYTE_3_3_2, 1, 0xe0, 0x1c },
- { "GL_RGB/GL_UNSIGNED_BYTE_2_3_3_REV",
- GL_RGB, GL_UNSIGNED_BYTE_2_3_3_REV, 1, 0x7, 0x38 },
-
- { NULL, 0, 0, 0, 0, 0 }
-};
-
-
-struct name_format {
- const char *name;
- GLenum format;
-};
-
-static const struct name_format IntFormats[] = {
- { "GL_RGBA", GL_RGBA },
- { "GL_RGBA2", GL_RGBA2 },
- { "GL_RGBA4", GL_RGBA4 },
- { "GL_RGB5_A1", GL_RGB5_A1 },
- { "GL_RGBA8", GL_RGBA8 },
- { "GL_RGBA12", GL_RGBA12 },
- { "GL_RGBA16", GL_RGBA16 },
- { "GL_RGB10_A2", GL_RGB10_A2 },
-
- { "GL_RGB", GL_RGB },
- { "GL_R3_G3_B2", GL_R3_G3_B2 },
- { "GL_RGB4", GL_RGB4 },
- { "GL_RGB5", GL_RGB5 },
- { "GL_RGB8", GL_RGB8 },
- { "GL_RGB10", GL_RGB10 },
- { "GL_RGB12", GL_RGB12 },
- { "GL_RGB16", GL_RGB16 },
-
-};
-
-#define NUM_INT_FORMATS (sizeof(IntFormats) / sizeof(IntFormats[0]))
-static GLuint CurFormat = 0;
-
-static GLboolean Test3D = GL_FALSE;
-static GLboolean Blend = GL_FALSE;
-
-
-static void
-PrintString(const char *s)
-{
- while (*s) {
- glutBitmapCharacter(GLUT_BITMAP_8_BY_13, (int) *s);
- s++;
- }
-}
-
-
-static void
-MakeTexture(const struct pixel_format *format, GLenum intFormat, GLboolean swap)
-{
- GLubyte texBuffer[1000];
- int i;
-
- glPixelStorei(GL_UNPACK_SWAP_BYTES, swap);
-
- if (format->bytes == 1) {
- for (i = 0; i < 8; i++) {
- texBuffer[i] = format->redTexel;
- }
- for (i = 8; i < 16; i++) {
- texBuffer[i] = format->greenTexel;
- }
- }
- else if (format->bytes == 2) {
- GLushort *us = (GLushort *) texBuffer;
- for (i = 0; i < 8; i++) {
- us[i] = format->redTexel;
- }
- for (i = 8; i < 16; i++) {
- us[i] = format->greenTexel;
- }
- if (swap) {
- for (i = 0; i < 16; i++)
- us[i] = (us[i] << 8) | (us[i] >> 8);
- }
- }
- else if (format->bytes == 4) {
- GLuint *ui = (GLuint *) texBuffer;
- for (i = 0; i < 8; i++) {
- ui[i] = format->redTexel;
- }
- for (i = 8; i < 16; i++) {
- ui[i] = format->greenTexel;
- }
- if (swap) {
- for (i = 0; i < 16; i++) {
- GLuint b = ui[i];
- ui[i] = (b >> 24)
- | ((b >> 8) & 0xff00)
- | ((b << 8) & 0xff0000)
- | ((b << 24) & 0xff000000);
- }
- }
- }
- else {
- abort();
- }
-
- if (Test3D) {
- /* 4 x 4 x 4 texture, undefined data */
- glTexImage3D(GL_TEXTURE_3D, 0, intFormat, 4, 4, 4, 0,
- format->format, format->type, NULL);
- /* fill in Z=1 and Z=2 slices with the real texture data */
- glTexSubImage3D(GL_TEXTURE_3D, 0,
- 0, 0, 1, /* offset */
- 4, 4, 1, /* size */
- format->format, format->type, texBuffer);
- glTexSubImage3D(GL_TEXTURE_3D, 0,
- 0, 0, 2, /* offset */
- 4, 4, 1, /* size */
- format->format, format->type, texBuffer);
- }
- else {
- glTexImage2D(GL_TEXTURE_2D, 0, intFormat, 4, 4, 0,
- format->format, format->type, texBuffer);
- }
-
- if (0) {
- GLint r, g, b, a, l, i;
- glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_RED_SIZE, &r);
- glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_GREEN_SIZE, &g);
- glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_BLUE_SIZE, &b);
- glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_ALPHA_SIZE, &a);
- glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_LUMINANCE_SIZE, &l);
- glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_INTENSITY_SIZE, &i);
- printf("IntFormat: 0x%x R %d G %d B %d A %d L %d I %d\n",
- intFormat, r, g, b, a, l, i);
- glGetError();
- }
-
- if (glGetError()) {
- printf("GL Error for %s\n", format->name);
- memset(texBuffer, 255, 1000);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 4, 4, 0,
- GL_RGB, GL_UNSIGNED_BYTE, texBuffer);
- }
-}
-
-
-
-static void
-Draw(void)
-{
- char s[1000];
- int w = 350, h = 20;
- int i, swap;
-
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- for (swap = 0; swap < 2; swap++) {
- for (i = 0; Formats[i].name; i++) {
- glPushMatrix();
- glTranslatef(swap * (w + 2), i * (h + 2), 0);
-
- MakeTexture(Formats + i, IntFormats[CurFormat].format, swap);
-
- if (Test3D)
- glEnable(GL_TEXTURE_3D);
- else
- glEnable(GL_TEXTURE_2D);
-
- if (Blend)
- glEnable(GL_BLEND);
-
- glBegin(GL_POLYGON);
- glTexCoord3f(0, 0, 0.5); glVertex2f(0, 0);
- glTexCoord3f(1, 0, 0.5); glVertex2f(w, 0);
- glTexCoord3f(1, 1, 0.5); glVertex2f(w, h);
- glTexCoord3f(0, 1, 0.5); glVertex2f(0, h);
- glEnd();
-
- if (Test3D)
- glDisable(GL_TEXTURE_3D);
- else
- glDisable(GL_TEXTURE_2D);
-
- glDisable(GL_BLEND);
-
- glColor3f(0, 0, 0);
- glRasterPos2i(8, 6);
- PrintString(Formats[i].name);
-
- glPopMatrix();
- }
- }
-
- glPushMatrix();
- glTranslatef(2, i * (h + 2), 0);
- glColor3f(1, 1, 1);
- glRasterPos2i(8, 6);
- PrintString("Normal");
- glRasterPos2i(w + 2, 6);
- PrintString("Byte Swapped");
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(2, (i + 1) * (h + 2), 0);
- glRasterPos2i(8, 6);
- sprintf(s, "Internal Texture Format [f/F]: %s (%d of %lu)",
- IntFormats[CurFormat].name, CurFormat + 1, (unsigned long) NUM_INT_FORMATS);
- PrintString(s);
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(2, (i + 2) * (h + 2), 0);
- glRasterPos2i(8, 6);
- if (Test3D)
- PrintString("Target [2/3]: GL_TEXTURE_3D");
- else
- PrintString("Target [2/3]: GL_TEXTURE_2D");
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(2, (i + 3) * (h + 2), 0);
- glRasterPos2i(8, 6);
- if (Blend)
- PrintString("Blend: Yes");
- else
- PrintString("Blend: No");
- glPopMatrix();
-
- glutSwapBuffers();
-}
-
-
-static void
-Reshape(int width, int height)
-{
- glViewport(0, 0, width, height);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glOrtho(0, width, 0, height, -1, 1);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-}
-
-
-static void
-Key(unsigned char key, int x, int y)
-{
- (void) x;
- (void) y;
- switch (key) {
- case 'b':
- Blend = !Blend;
- break;
- case 'F':
- if (CurFormat == 0)
- CurFormat = NUM_INT_FORMATS - 1;
- else
- CurFormat--;
- break;
- case 'f':
- CurFormat++;
- if (CurFormat == NUM_INT_FORMATS)
- CurFormat = 0;
- break;
- case '2':
- Test3D = GL_FALSE;
- break;
- case '3':
- Test3D = GL_TRUE;
- break;
- case 27:
- exit(0);
- break;
- }
- glutPostRedisplay();
-}
-
-
-static void
-Init(void)
-{
- printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
- printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-}
-
-
-int
-main(int argc, char *argv[])
-{
- glutInit(&argc, argv);
- glutInitWindowPosition(0, 0);
- glutInitWindowSize(700, 800);
- glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
- glutCreateWindow(argv[0]);
- glewInit();
- glutReshapeFunc(Reshape);
- glutKeyboardFunc(Key);
- glutDisplayFunc(Draw);
- Init();
- glutMainLoop();
- return 0;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 13:42:14 +0000