int crdlm_pointers_Bitmap( struct instanceBitmap *instance, GLsizei width, GLsizei height, GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove, const GLubyte *bitmap, CRClientState *c)
{
unsigned int size = ((int)((width + 7) / 8)) * height;
/* glBitmap can be called with a NULL size 0 bitmap, say for
* an empty glyph that only moves the current raster position.
* crMemcpy will raise an exception with a NULL source pointer, even if
* the size to copy is 0. So make sure we don't ram into this.
* Also, the bitmap isn't necessarily just sitting in memory; the PixelStore
* client-side state affects how it is read from memory. It's easiest to just
* use the utility.
*/
if (instance && size > 0) {
crBitmapCopy(width, height, instance->bitmap, bitmap,
&c->unpack);
}
return size;
}
void PACK_APIENTRY crPackBitmap(GLsizei width, GLsizei height,
GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
const GLubyte *bitmap, const CRPixelPackState *unpack )
{
const int noimagedata = (bitmap == NULL) || crStateIsBufferBound(GL_PIXEL_UNPACK_BUFFER_ARB);
unsigned char *data_ptr;
int data_length = 0;
GLubyte *destBitmap = NULL;
int packet_length =
sizeof( width ) +
sizeof( height ) +
sizeof( xorig ) +
sizeof( yorig ) +
sizeof( xmove ) +
sizeof( ymove ) +
sizeof( GLuint ) + sizeof(GLint);
if (!noimagedata)
{
data_length = CEIL8(width) * height / 8;
packet_length += data_length;
}
data_ptr = (unsigned char *) crPackAlloc( packet_length );
WRITE_DATA( 0, GLsizei, width );
WRITE_DATA( 4, GLsizei, height );
WRITE_DATA( 8, GLfloat, xorig );
WRITE_DATA( 12, GLfloat, yorig );
WRITE_DATA( 16, GLfloat, xmove );
WRITE_DATA( 20, GLfloat, ymove );
WRITE_DATA( 24, GLuint, noimagedata );
WRITE_DATA( 28, GLint, (GLint) (uintptr_t) bitmap);
if (!noimagedata)
crBitmapCopy(width, height, (GLubyte *)(data_ptr + 32), bitmap, unpack);
crHugePacket( CR_BITMAP_OPCODE, data_ptr );
crPackFree( data_ptr );
}
