/**
* @brief Uploads image data
* @param[in] name The name of the texture to use for this data
* @param[in] frame The frame data that is uploaded
* @param[in] width The width of the texture
* @param[in] height The height of the texture
* @return the texture number of the uploaded images
*/
int R_UploadData (const char *name, unsigned *frame, int width, int height)
{
image_t *img;
unsigned *scaled;
int scaledWidth, scaledHeight;
int samples = r_config.gl_compressed_solid_format ? r_config.gl_compressed_solid_format : r_config.gl_solid_format;
R_GetScaledTextureSize(width, height, &scaledWidth, &scaledHeight);
img = R_FindImage(name, it_pic);
if (img == r_noTexture)
Com_Error(ERR_FATAL, "Could not find the searched image: %s", name);
/* scan the texture for any non-255 alpha */
for (unsigned const* i = frame, * const end = i + scaledHeight * scaledWidth; i != end; ++i) {
if ((*i & 0xFF000000U) != 0xFF000000U) {
samples = r_config.gl_compressed_alpha_format ? r_config.gl_compressed_alpha_format : r_config.gl_alpha_format;
break;
}
}
if (scaledWidth != width || scaledHeight != height) { /* whereas others need to be scaled */
scaled = Mem_PoolAllocTypeN(unsigned, scaledWidth * scaledHeight, vid_imagePool);
R_ScaleTexture(frame, width, height, scaled, scaledWidth, scaledHeight);
} else {
/**
* @brief Uploads image data
* @param[in] name The name of the texture to use for this data
* @param[in] frame The frame data that is uploaded
* @param[in] width The width of the texture
* @param[in] height The height of the texture
* @return the texture number of the uploaded images
*/
int R_UploadData (const char *name, byte *frame, int width, int height)
{
image_t *img;
unsigned *scaled;
int scaledWidth, scaledHeight;
int samples = r_config.gl_compressed_solid_format ? r_config.gl_compressed_solid_format : r_config.gl_solid_format;
int i, c;
byte *scan;
R_GetScaledTextureSize(width, height, &scaledWidth, &scaledHeight);
img = R_FindImage(name, it_pic);
if (img == r_noTexture)
Com_Error(ERR_FATAL, "Could not find the searched image: %s", name);
/* scan the texture for any non-255 alpha */
c = scaledWidth * scaledHeight;
/* set scan to the first alpha byte */
for (i = 0, scan = ((byte *) frame) + 3; i < c; i++, scan += 4) {
if (*scan != 255) {
samples = r_config.gl_compressed_alpha_format ? r_config.gl_compressed_alpha_format : r_config.gl_alpha_format;
break;
}
}
if (scaledWidth != width || scaledHeight != height) { /* whereas others need to be scaled */
scaled = (unsigned *)Mem_PoolAllocExt(scaledWidth * scaledHeight * sizeof(unsigned), qfalse, vid_imagePool, 0);
R_ScaleTexture((unsigned *)frame, width, height, scaled, scaledWidth, scaledHeight);
} else {
scaled = (unsigned *)frame;
}
R_BindTexture(img->texnum);
if (img->upload_width == scaledWidth && img->upload_height == scaledHeight) {
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, scaledWidth, scaledHeight, GL_RGBA, GL_UNSIGNED_BYTE, scaled);
} else {
/* Reallocate the texture */
img->width = width;
img->height = height;
img->upload_width = scaledWidth;
img->upload_height = scaledHeight;
#ifdef HAVE_GLES
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, scaledWidth, scaledHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaled);
#else
glTexImage2D(GL_TEXTURE_2D, 0, samples, scaledWidth, scaledHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaled);
#endif
}
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
R_CheckError();
if (scaled != (unsigned *)frame)
Mem_Free(scaled);
return img->texnum;
}