GLvoid APIENTRY GLDSA_CompressedTextureSubImage2D(GLuint texture, GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format,
GLsizei imageSize, const GLvoid *data)
{
GL_BindMultiTexture(glDsaState.texunit, target, texture);
qglCompressedTexSubImage2DARB(target, level, xoffset, yoffset, width, height, format, imageSize, data);
}
/*
========================
idImage::SubImageUpload
========================
*/
void idImage::SubImageUpload( int mipLevel, int x, int y, int z, int width, int height, const void * pic, int pixelPitch ) const {
assert( x >= 0 && y >= 0 && mipLevel >= 0 && width >= 0 && height >= 0 && mipLevel < opts.numLevels );
int compressedSize = 0;
if ( IsCompressed() ) {
assert( !(x&3) && !(y&3) );
// compressed size may be larger than the dimensions due to padding to quads
int quadW = ( width + 3 ) & ~3;
int quadH = ( height + 3 ) & ~3;
compressedSize = quadW * quadH * BitsForFormat( opts.format ) / 8;
int padW = ( opts.width + 3 ) & ~3;
int padH = ( opts.height + 3 ) & ~3;
(void)padH;
(void)padW;
assert( x + width <= padW && y + height <= padH );
// upload the non-aligned value, OpenGL understands that there
// will be padding
if ( x + width > opts.width ) {
width = opts.width - x;
}
if ( y + height > opts.height ) {
height = opts.height - x;
}
} else {
assert( x + width <= opts.width && y + height <= opts.height );
}
int target;
int uploadTarget;
if ( opts.textureType == TT_2D ) {
target = GL_TEXTURE_2D;
uploadTarget = GL_TEXTURE_2D;
} else if ( opts.textureType == TT_CUBIC ) {
target = GL_TEXTURE_CUBE_MAP_EXT;
uploadTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_X_EXT + z;
} else {
assert( !"invalid opts.textureType" );
target = GL_TEXTURE_2D;
uploadTarget = GL_TEXTURE_2D;
}
qglBindTexture( target, texnum );
if ( pixelPitch != 0 ) {
qglPixelStorei( GL_UNPACK_ROW_LENGTH, pixelPitch );
}
if ( opts.format == FMT_RGB565 ) {
glPixelStorei( GL_UNPACK_SWAP_BYTES, GL_TRUE );
}
#ifdef DEBUG
GL_CheckErrors();
#endif
if ( IsCompressed() ) {
qglCompressedTexSubImage2DARB( uploadTarget, mipLevel, x, y, width, height, internalFormat, compressedSize, pic );
} else {
// make sure the pixel store alignment is correct so that lower mips get created
// properly for odd shaped textures - this fixes the mip mapping issues with
// fonts
int unpackAlignment = width * BitsForFormat( (textureFormat_t)opts.format ) / 8;
if ( ( unpackAlignment & 3 ) == 0 ) {
qglPixelStorei( GL_UNPACK_ALIGNMENT, 4 );
} else {
qglPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
}
qglTexSubImage2D( uploadTarget, mipLevel, x, y, width, height, dataFormat, dataType, pic );
}
#ifdef DEBUG
GL_CheckErrors();
#endif
if ( opts.format == FMT_RGB565 ) {
glPixelStorei( GL_UNPACK_SWAP_BYTES, GL_FALSE );
}
if ( pixelPitch != 0 ) {
qglPixelStorei( GL_UNPACK_ROW_LENGTH, 0 );
}
}
