static void texcache_setuptexture(int32_t *doalloc, GLuint *glpic)
{
if (*doalloc&1)
{
bglGenTextures(1,glpic); //# of textures (make OpenGL allocate structure)
*doalloc |= 2; // prevents bglGenTextures being called again if we fail in here
}
bglBindTexture(GL_TEXTURE_2D,*glpic);
}
//pitch must equal xsiz*4
uint32_t gloadtex(int32_t *picbuf, int32_t xsiz, int32_t ysiz, int32_t is8bit, int32_t dapal)
{
const char *const cptr = &britable[gammabrightness ? 0 : curbrightness][0];
// Correct for GL's RGB order; also apply gamma here:
const coltype *const pic = (const coltype *)picbuf;
coltype *pic2 = (coltype *)Xmalloc(xsiz*ysiz*sizeof(coltype));
if (!is8bit)
{
for (int32_t i=xsiz*ysiz-1; i>=0; i--)
{
pic2[i].b = cptr[pic[i].r];
pic2[i].g = cptr[pic[i].g];
pic2[i].r = cptr[pic[i].b];
pic2[i].a = 255;
}
}
else
{
if (palookup[dapal] == NULL)
dapal = 0;
for (int32_t i=xsiz*ysiz-1; i>=0; i--)
{
const int32_t ii = palookup[dapal][pic[i].a];
pic2[i].b = cptr[curpalette[ii].b];
pic2[i].g = cptr[curpalette[ii].g];
pic2[i].r = cptr[curpalette[ii].r];
pic2[i].a = 255;
}
}
uint32_t rtexid;
bglGenTextures(1, (GLuint *) &rtexid);
bglBindTexture(GL_TEXTURE_2D, rtexid);
bglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
bglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
bglTexImage2D(GL_TEXTURE_2D, 0, 4, xsiz, ysiz, 0, GL_RGBA, GL_UNSIGNED_BYTE, (char *) pic2);
Bfree(pic2);
return rtexid;
}
