inline void VL_glFogCoordPointer( GLenum type, GLsizei stride, GLvoid* pointer )
{
if (glFogCoordPointer)
glFogCoordPointer(type,stride,pointer);
else
if (glFogCoordPointerEXT)
glFogCoordPointerEXT(type,stride,pointer);
else
VL_UNSUPPORTED_FUNC();
}
inline void VL_glFogCoordPointer( GLenum type, GLsizei stride, GLvoid* pointer )
{
#ifdef GL_VERSION_1_4_DEPRECATED
if (glFogCoordPointer)
glFogCoordPointer(type,stride,pointer);
else
#endif
if (glFogCoordPointerEXT)
glFogCoordPointerEXT(type,stride,pointer);
else
VL_UNSUPPORTED_FUNC();
}
static void
Init(void)
{
static const GLubyte teximage[2][2][4] = {
{ { 255, 255, 255, 255}, { 128, 128, 128, 255} },
{ { 128, 128, 128, 255}, { 255, 255, 255, 255} }
};
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
if (!GLEW_EXT_fog_coord) {
printf("GL_EXT_fog_coord not supported!\n");
}
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0,
GL_RGBA, GL_UNSIGNED_BYTE, teximage);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glClearColor(0.1f, 0.1f, 0.1f, 0.0f);
glDepthFunc(GL_LEQUAL);
glEnable(GL_DEPTH_TEST);
glShadeModel(GL_SMOOTH);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
glFogfv(GL_FOG_COLOR, fogColor);
glHint(GL_FOG_HINT, GL_NICEST);
fogCoord = SetFogCoord(GL_TRUE); /* try to enable fog_coord */
fogMode = SetFogMode(1);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, vertex_pointer);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, 0, texcoord_pointer);
if (GLEW_EXT_fog_coord) {
glEnableClientState(GL_FOG_COORDINATE_ARRAY_EXT);
glFogCoordPointerEXT(GL_FLOAT, 0, fogcoord_pointer);
}
Reset();
}
static void va_render ()
{
GLint i;
for (i = 0; i < sizeof (attribs) / sizeof (*attribs); i++) {
struct ATTRIB_DATA *att = &attribs[i];
switch (att->dispatch)
{
case C:
glColorPointer (4, GL_FLOAT, 0, att->data);
glEnable (GL_COLOR_ARRAY);
break;
case S:
glSecondaryColorPointerEXT (4, GL_FLOAT, 0, att->data);
glEnable (GL_SECONDARY_COLOR_ARRAY_EXT);
break;
case N:
glNormalPointer (GL_FLOAT, 0, att->data);
glEnable (GL_NORMAL_ARRAY);
break;
case V:
glVertexPointer (4, GL_FLOAT, 0, att->data);
glEnable (GL_VERTEX_ARRAY);
break;
case T:
assert (att->index >= 0 && att->index < 8);
glClientActiveTextureARB (GL_TEXTURE0_ARB + att->index);
glTexCoordPointer (4, GL_FLOAT, 0, att->data);
glEnable (GL_TEXTURE_COORD_ARRAY);
break;
case F:
glFogCoordPointerEXT (GL_FLOAT, 0, att->data);
glEnable (GL_FOG_COORDINATE_ARRAY_EXT);
break;
case A:
assert (att->index > 0 && att->index < 16);
glVertexAttribPointerARB (att->index, 4, GL_FLOAT, GL_FALSE, 0, att->data);
glEnableVertexAttribArrayARB (att->index);
break;
default:
assert (0);
}
}
glDrawArrays (GL_POINTS, 0, 1);
for (i = 0; i < sizeof (attribs) / sizeof (*attribs); i++) {
struct ATTRIB_DATA *att = &attribs[i];
switch (att->dispatch)
{
case C:
glDisable (GL_COLOR_ARRAY);
break;
case S:
glDisable (GL_SECONDARY_COLOR_ARRAY_EXT);
break;
case N:
glDisable (GL_NORMAL_ARRAY);
break;
case V:
glDisable (GL_VERTEX_ARRAY);
break;
case T:
glClientActiveTextureARB (GL_TEXTURE0_ARB + att->index);
glDisable (GL_TEXTURE_COORD_ARRAY);
break;
case F:
glDisable (GL_FOG_COORDINATE_ARRAY_EXT);
break;
case A:
glDisableVertexAttribArrayARB (att->index);
break;
default:
assert (0);
}
}
}
