/**
* Query the current drawable size and notify the binding context.
*/
void
xmesa_check_buffer_size(XMesaBuffer b)
{
if (b->type == PBUFFER)
return;
xmesa_get_window_size(b->xm_visual->display, b, &b->width, &b->height);
xmesa_notify_invalid_buffer(b);
}
/**
* For GLX_EXT_texture_from_pixmap
*/
XMesaBuffer
XMesaCreatePixmapTextureBuffer(XMesaVisual v, XMesaPixmap p,
XMesaColormap cmap,
int format, int target, int mipmap)
{
GET_CURRENT_CONTEXT(ctx);
XMesaBuffer b;
GLuint width, height;
assert(v);
b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap);
if (!b)
return NULL;
/* get pixmap size, update framebuffer/renderbuffer dims */
xmesa_get_window_size(v->display, b, &width, &height);
_mesa_resize_framebuffer(NULL, &(b->mesa_buffer), width, height);
if (target == 0) {
/* examine dims */
if (ctx->Extensions.ARB_texture_non_power_of_two) {
target = GLX_TEXTURE_2D_EXT;
}
else if ( _mesa_bitcount(width) == 1
&& _mesa_bitcount(height) == 1) {
/* power of two size */
if (height == 1) {
target = GLX_TEXTURE_1D_EXT;
}
else {
target = GLX_TEXTURE_2D_EXT;
}
}
else if (ctx->Extensions.NV_texture_rectangle) {
target = GLX_TEXTURE_RECTANGLE_EXT;
}
else {
/* non power of two textures not supported */
XMesaDestroyBuffer(b);
return 0;
}
}
b->TextureTarget = target;
b->TextureFormat = format;
b->TextureMipmap = mipmap;
if (!initialize_visual_and_buffer(v, b, (XMesaDrawable) p, cmap)) {
xmesa_free_buffer(b);
return NULL;
}
return b;
}
/**
* Query the current window size and update the corresponding struct gl_framebuffer
* and all attached renderbuffers.
* Called when:
* 1. the first time a buffer is bound to a context.
* 2. from glViewport to poll for window size changes
* 3. from the XMesaResizeBuffers() API function.
* Note: it's possible (and legal) for xmctx to be NULL. That can happen
* when resizing a buffer when no rendering context is bound.
*/
void
xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer)
{
GLuint width, height;
xmesa_get_window_size(drawBuffer->display, drawBuffer, &width, &height);
if (drawBuffer->mesa_buffer.Width != width ||
drawBuffer->mesa_buffer.Height != height) {
struct gl_context *ctx = xmctx ? &xmctx->mesa : NULL;
_mesa_resize_framebuffer(ctx, &(drawBuffer->mesa_buffer), width, height);
}
drawBuffer->mesa_buffer.Initialized = GL_TRUE; /* XXX TEMPORARY? */
}
/**
* Query the current drawable size and notify the binding context.
*/
void
xmesa_check_buffer_size(XMesaBuffer b)
{
GLuint old_width, old_height;
if (b->type == PBUFFER)
return;
old_width = b->width;
old_height = b->height;
xmesa_get_window_size(b->xm_visual->display, b, &b->width, &b->height);
if (b->width != old_width || b->height != old_height)
xmesa_notify_invalid_buffer(b);
}
