static GLboolean
add_depth_stencil_renderbuffer(struct gl_context *ctx,
struct gl_framebuffer *fb)
{
struct gl_renderbuffer *rb;
assert(fb->Attachment[BUFFER_DEPTH].Renderbuffer == NULL);
assert(fb->Attachment[BUFFER_STENCIL].Renderbuffer == NULL);
rb = _swrast_new_soft_renderbuffer(ctx, 0);
if (!rb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating depth+stencil buffer");
return GL_FALSE;
}
rb->InternalFormat = GL_DEPTH_STENCIL;
rb->AllocStorage = soft_renderbuffer_storage;
_mesa_attach_and_own_rb(fb, BUFFER_DEPTH, rb);
_mesa_attach_and_reference_rb(fb, BUFFER_STENCIL, rb);
return GL_TRUE;
}
/**
* Bind an OSMesaContext to an image buffer. The image buffer is just a
* block of memory which the client provides. Its size must be at least
* as large as width*height*sizeof(type). Its address should be a multiple
* of 4 if using RGBA mode.
*
* Image data is stored in the order of glDrawPixels: row-major order
* with the lower-left image pixel stored in the first array position
* (ie. bottom-to-top).
*
* If the context's viewport hasn't been initialized yet, it will now be
* initialized to (0,0,width,height).
*
* If both the context and the buffer are null, the current context will be
* unbound.
*
* Input: osmesa - the rendering context
* buffer - the image buffer memory
* type - data type for pixel components
* Normally, only GL_UNSIGNED_BYTE and GL_UNSIGNED_SHORT_5_6_5
* are supported. But if Mesa's been compiled with CHAN_BITS==16
* then type may be GL_UNSIGNED_SHORT or GL_UNSIGNED_BYTE. And if
* Mesa's been build with CHAN_BITS==32 then type may be GL_FLOAT,
* GL_UNSIGNED_SHORT or GL_UNSIGNED_BYTE.
* width, height - size of image buffer in pixels, at least 1
* Return: GL_TRUE if success, GL_FALSE if error because of invalid osmesa,
* invalid buffer address, invalid type, width<1, height<1,
* width>internal limit or height>internal limit.
*/
GLAPI GLboolean GLAPIENTRY
OSMesaMakeCurrent( OSMesaContext osmesa, void *buffer, GLenum type,
GLsizei width, GLsizei height )
{
if (!osmesa && !buffer) {
return _mesa_make_current(NULL, NULL, NULL);
}
if (!osmesa || !buffer ||
width < 1 || height < 1 ||
width > SWRAST_MAX_WIDTH || height > SWRAST_MAX_HEIGHT) {
return GL_FALSE;
}
if (osmesa->format == OSMESA_RGB_565 && type != GL_UNSIGNED_SHORT_5_6_5) {
return GL_FALSE;
}
#if 0
if (!(type == GL_UNSIGNED_BYTE ||
(type == GL_UNSIGNED_SHORT && CHAN_BITS >= 16) ||
(type == GL_FLOAT && CHAN_BITS == 32))) {
/* i.e. is sizeof(type) * 8 > CHAN_BITS? */
return GL_FALSE;
}
#endif
osmesa_update_state( &osmesa->mesa, 0 );
/* Call this periodically to detect when the user has begun using
* GL rendering from multiple threads.
*/
_glapi_check_multithread();
/* Create a front/left color buffer which wraps the user-provided buffer.
* There is no back color buffer.
* If the user tries to use a 8, 16 or 32-bit/channel buffer that
* doesn't match what Mesa was compiled for (CHAN_BITS) the
* _mesa_attach_and_reference_rb() function will create a "wrapper"
* renderbuffer that converts rendering from CHAN_BITS to the
* user-requested channel size.
*/
if (!osmesa->srb) {
osmesa->srb = new_osmesa_renderbuffer(&osmesa->mesa, osmesa->format, type);
_mesa_remove_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT);
_mesa_attach_and_reference_rb(osmesa->gl_buffer, BUFFER_FRONT_LEFT,
&osmesa->srb->Base);
assert(osmesa->srb->Base.RefCount == 2);
}
osmesa->DataType = type;
/* Set renderbuffer fields. Set width/height = 0 to force
* osmesa_renderbuffer_storage() being called by _mesa_resize_framebuffer()
*/
osmesa->srb->Buffer = buffer;
osmesa->srb->Base.Width = osmesa->srb->Base.Height = 0;
/* Set the framebuffer's size. This causes the
* osmesa_renderbuffer_storage() function to get called.
*/
_mesa_resize_framebuffer(&osmesa->mesa, osmesa->gl_buffer, width, height);
_mesa_make_current( &osmesa->mesa, osmesa->gl_buffer, osmesa->gl_buffer );
/* Remove renderbuffer attachment, then re-add. This installs the
* renderbuffer adaptor/wrapper if needed (for bpp conversion).
*/
_mesa_remove_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT);
_mesa_attach_and_reference_rb(osmesa->gl_buffer, BUFFER_FRONT_LEFT,
&osmesa->srb->Base);
/* this updates the visual's red/green/blue/alphaBits fields */
_mesa_update_framebuffer_visual(&osmesa->mesa, osmesa->gl_buffer);
/* update the framebuffer size */
_mesa_resize_framebuffer(&osmesa->mesa, osmesa->gl_buffer, width, height);
return GL_TRUE;
}
