diff options
Diffstat (limited to 'src/mesa/drivers/x11/xm_buffer.c')
-rw-r--r-- | src/mesa/drivers/x11/xm_buffer.c | 48 |
1 files changed, 26 insertions, 22 deletions
diff --git a/src/mesa/drivers/x11/xm_buffer.c b/src/mesa/drivers/x11/xm_buffer.c index 747971a6c3..c1fa23328f 100644 --- a/src/mesa/drivers/x11/xm_buffer.c +++ b/src/mesa/drivers/x11/xm_buffer.c @@ -168,9 +168,6 @@ alloc_back_shm_ximage(XMesaBuffer b, GLuint width, GLuint height) static void alloc_back_buffer(XMesaBuffer b, GLuint width, GLuint height) { - if (width == 0 || height == 0) - return; - if (b->db_mode == BACK_XIMAGE) { /* Deallocate the old backxrb->ximage, if any */ if (b->backxrb->ximage) { @@ -186,6 +183,9 @@ alloc_back_buffer(XMesaBuffer b, GLuint width, GLuint height) b->backxrb->ximage = NULL; } + if (width == 0 || height == 0) + return; + /* Allocate new back buffer */ #ifdef XFree86Server /* Allocate a regular XImage for the back buffer. */ @@ -218,20 +218,20 @@ alloc_back_buffer(XMesaBuffer b, GLuint width, GLuint height) b->backxrb->pixmap = None; } else if (b->db_mode == BACK_PIXMAP) { - if (!width) - width = 1; - if (!height) - height = 1; - /* Free the old back pixmap */ if (b->backxrb->pixmap) { - XMesaFreePixmap(b->xm_visual->display, b->backxrb->pixmap); + XMesaFreePixmap(b->xm_visual->display, b->backxrb->pixmap); + b->backxrb->pixmap = 0; + } + + if (width > 0 && height > 0) { + /* Allocate new back pixmap */ + b->backxrb->pixmap = XMesaCreatePixmap(b->xm_visual->display, + b->frontxrb->drawable, + width, height, + GET_VISUAL_DEPTH(b->xm_visual)); } - /* Allocate new back pixmap */ - b->backxrb->pixmap = XMesaCreatePixmap(b->xm_visual->display, - b->frontxrb->drawable, - width, height, - GET_VISUAL_DEPTH(b->xm_visual)); + b->backxrb->ximage = NULL; } } @@ -250,6 +250,7 @@ xmesa_delete_renderbuffer(struct gl_renderbuffer *rb) /** * Reallocate renderbuffer storage for front color buffer. + * Called via gl_renderbuffer::AllocStorage() */ static GLboolean xmesa_alloc_front_storage(GLcontext *ctx, struct gl_renderbuffer *rb, @@ -260,6 +261,7 @@ xmesa_alloc_front_storage(GLcontext *ctx, struct gl_renderbuffer *rb, /* just clear these to be sure we don't accidentally use them */ xrb->origin1 = NULL; xrb->origin2 = NULL; + xrb->origin3 = NULL; xrb->origin4 = NULL; /* for the FLIP macro: */ @@ -275,6 +277,7 @@ xmesa_alloc_front_storage(GLcontext *ctx, struct gl_renderbuffer *rb, /** * Reallocate renderbuffer storage for back color buffer. + * Called via gl_renderbuffer::AllocStorage() */ static GLboolean xmesa_alloc_back_storage(GLcontext *ctx, struct gl_renderbuffer *rb, @@ -309,8 +312,12 @@ xmesa_alloc_back_storage(GLcontext *ctx, struct gl_renderbuffer *rb, xrb->origin4 = (GLuint *) xrb->ximage->data + xrb->width4 * (height - 1); } else { - /* this assertion will fail if we happend to run out of memory */ - /*assert(xrb->pixmap);*/ + /* out of memory or buffer size is 0 x 0 */ + xrb->width1 = xrb->width2 = xrb->width3 = xrb->width4 = 0; + xrb->origin1 = NULL; + xrb->origin2 = NULL; + xrb->origin3 = NULL; + xrb->origin4 = NULL; } return GL_TRUE; @@ -362,16 +369,13 @@ xmesa_delete_framebuffer(struct gl_framebuffer *fb) { XMesaBuffer b = XMESA_BUFFER(fb); -#ifdef XFree86Server - int client = 0; - if (b->frontxrb->drawable) - client = CLIENT_ID(b->frontxrb->drawable->id); -#endif - if (b->num_alloced > 0) { /* If no other buffer uses this X colormap then free the colors. */ if (!xmesa_find_buffer(b->display, b->cmap, b)) { #ifdef XFree86Server + int client = 0; + if (b->frontxrb->drawable) + client = CLIENT_ID(b->frontxrb->drawable->id); (void)FreeColors(b->cmap, client, b->num_alloced, b->alloced_colors, 0); #else |