#include <stdlib.h>
#include <math.h>
#include <string.h>
+#include <GL/glew.h>
#include <GL/glut.h>
GLenum format;
GLenum type;
GLint bytes;
- GLuint redTexel, greenTexel;
+ 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, 0xff000000, 0x00ff0000 },
+ 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, 0x000000ff, 0x0000ff00 },
+ 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, 0xffc00000, 0x3ff000 },
+ 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, 0x3ff, 0xffc00 },
+ 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, 0xf000, 0x0f00 },
+ 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, 0x000f, 0x00f0 },
+ 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, 0xf800, 0x7c0 },
+ 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, 0x1f, 0x3e0 },
+ 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, 0x0000ff00, 0x00ff0000 },
+ 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, 0x00ff0000, 0x0000ff00 },
+ 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, 0x00f0, 0x0f00 },
+ 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, 0x0f00, 0x00f0 },
+ 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, 0x3e, 0x7c0 },
+ 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, 0x7c00, 0x3e0 },
+ 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, 0x000000ff, 0x0000ff00 },
+ 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, 0xff000000, 0x00ff0000 },
+ 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, 0x000f, 0x00f0 },
+ 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, 0xf000, 0x0f00 },
+ 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, 0x1, 0x3e },
+ 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, 0x8000, 0x7c00 },
+ 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 },
#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)
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 (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);
MakeTexture(Formats + i, IntFormats[CurFormat].format, swap);
- glEnable(GL_TEXTURE_2D);
+ if (Test3D)
+ glEnable(GL_TEXTURE_3D);
+ else
+ glEnable(GL_TEXTURE_2D);
+
+ if (Blend)
+ glEnable(GL_BLEND);
+
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);
+
+ glDisable(GL_BLEND);
+
glColor3f(0, 0, 0);
glRasterPos2i(8, 6);
PrintString(Formats[i].name);
glPushMatrix();
glTranslatef(2, (i + 1) * (h + 2), 0);
glRasterPos2i(8, 6);
- sprintf(s, "Internal Texture Format [f/F]: %s (%d of %d)",
+ sprintf(s, "Internal Texture Format [f/F]: %s (%d of %lu)",
IntFormats[CurFormat].name, CurFormat + 1, NUM_INT_FORMATS);
+ 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();
}
(void) x;
(void) y;
switch (key) {
+ case 'b':
+ Blend = !Blend;
+ break;
case 'F':
if (CurFormat == 0)
CurFormat = NUM_INT_FORMATS - 1;
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;
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);
}
glutInitWindowSize(700, 800);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow(argv[0]);
+ glewInit();
glutReshapeFunc(Reshape);
glutKeyboardFunc(Key);
glutDisplayFunc(Draw);
projects / mesa.git / blobdiff