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also test 3D textures (press '2'/'3' to toggle)

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This commit is contained in:
Brian Paul
2006-05-19 16:42:01 +00:00
parent 083f8111aa
commit 5ec34f0ff9
1 changed files with 44 additions and 8 deletions
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52
progs/tests/packedpixels.c
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@@ -106,6 +106,9 @@ static const struct name_format IntFormats[] = {
#define NUM_INT_FORMATS (sizeof(IntFormats) / sizeof(IntFormats[0]))
static GLuint CurFormat = 0;
static GLboolean Test3D = GL_FALSE;
static void
PrintString(const char *s)
@@ -167,8 +170,25 @@ MakeTexture(const struct pixel_format *format, GLenum intFormat, GLboolean swap)
else {
abort();
}
glTexImage2D(GL_TEXTURE_2D, 0, intFormat, 4, 4, 0,
format->format, format->type, texBuffer);
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 (glGetError()) {
printf("GL Error for %s\n", format->name);
@@ -196,15 +216,21 @@ Draw(void)
MakeTexture(Formats + i, IntFormats[CurFormat].format, swap);
glEnable(GL_TEXTURE_2D);
if (Test3D)
glEnable(GL_TEXTURE_3D);
else
glEnable(GL_TEXTURE_2D);
glBegin(GL_POLYGON);
glTexCoord2f(0, 0); glVertex2f(0, 0);
glTexCoord2f(1, 0); glVertex2f(w, 0);
glTexCoord2f(1, 1); glVertex2f(w, h);
glTexCoord2f(0, 1); glVertex2f(0, h);
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();
glDisable(GL_TEXTURE_2D);
if (Test3D)
glDisable(GL_TEXTURE_3D);
else
glDisable(GL_TEXTURE_2D);
glColor3f(0, 0, 0);
glRasterPos2i(8, 6);
PrintString(Formats[i].name);
@@ -263,6 +289,14 @@ Key(unsigned char key, int x, int y)
if (CurFormat == NUM_INT_FORMATS)
CurFormat = 0;
break;
case '2':
Test3D = GL_FALSE;
printf("Using 2D textures\n");
break;
case '3':
Test3D = GL_TRUE;
printf("Using 3D textures\n");
break;
case 27:
exit(0);
break;
@@ -278,6 +312,8 @@ Init(void)
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);
}