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/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "main/imports.h"
#include "main/context.h"
#include "main/framebuffer.h"
#include "main/renderbuffer.h"
#include "st_public.h"
#include "st_context.h"
#include "st_cb_fbo.h"
struct st_framebuffer *st_create_framebuffer( const __GLcontextModes *visual,
boolean createRenderbuffers,
void *private)
{
struct st_framebuffer *stfb
= CALLOC_STRUCT(st_framebuffer);
if (stfb) {
GLenum rgbFormat = (visual->redBits == 5 ? GL_RGB5 : GL_RGBA8);
_mesa_initialize_framebuffer(&stfb->Base, visual);
if (createRenderbuffers) {
{
/* fake frontbuffer */
/* XXX allocation should only happen in the unusual case
it's actually needed */
struct gl_renderbuffer *rb = st_new_renderbuffer_fb(rgbFormat);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_FRONT_LEFT, rb);
}
if (visual->doubleBufferMode) {
struct gl_renderbuffer *rb = st_new_renderbuffer_fb(rgbFormat);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_BACK_LEFT, rb);
}
if (visual->depthBits == 24 && visual->stencilBits == 8) {
/* combined depth/stencil buffer */
struct gl_renderbuffer *depthStencilRb
= st_new_renderbuffer_fb(GL_DEPTH24_STENCIL8_EXT);
/* note: bind RB to two attachment points */
_mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthStencilRb);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_STENCIL, depthStencilRb);
}
else {
/* separate depth and/or stencil */
if (visual->depthBits == 32) {
/* 32-bit depth buffer */
struct gl_renderbuffer *depthRb
= st_new_renderbuffer_fb(GL_DEPTH_COMPONENT32);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthRb);
}
else if (visual->depthBits == 24) {
/* 24-bit depth buffer, ignore stencil bits */
struct gl_renderbuffer *depthRb
= st_new_renderbuffer_fb(GL_DEPTH24_STENCIL8_EXT);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthRb);
}
else if (visual->depthBits > 0) {
/* 16-bit depth buffer */
struct gl_renderbuffer *depthRb
= st_new_renderbuffer_fb(GL_DEPTH_COMPONENT16);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthRb);
}
if (visual->stencilBits > 0) {
/* 8-bit stencil */
struct gl_renderbuffer *stencilRb
= st_new_renderbuffer_fb(GL_STENCIL_INDEX8_EXT);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_STENCIL, stencilRb);
}
}
#if 0
if (visual->accumRedBits > 0) {
/* 16-bit/channel accum */
struct gl_renderbuffer *accumRb
= st_new_renderbuffer_fb(GL_RGBA16);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_ACCUM, accumRb);
}
#endif
/* now add any/all software-based renderbuffers we may need */
_mesa_add_soft_renderbuffers(&stfb->Base,
GL_FALSE, /* never sw color */
GL_FALSE, /* never sw depth */
GL_FALSE, /* stencil */
visual->accumRedBits > 0,
GL_FALSE, /* never sw alpha */
GL_FALSE /* never sw aux */ );
}
stfb->Base.Initialized = GL_TRUE;
stfb->Private = private;
}
return stfb;
}
void st_resize_framebuffer( struct st_framebuffer *stfb,
uint width, uint height )
{
if (stfb->Base.Width != width || stfb->Base.Height != height) {
GET_CURRENT_CONTEXT(ctx);
if (ctx) {
_mesa_resize_framebuffer(ctx, &stfb->Base, width, height);
assert(stfb->Base.Width == width);
assert(stfb->Base.Height == height);
}
}
}
void st_unreference_framebuffer( struct st_framebuffer **stfb )
{
_mesa_unreference_framebuffer((struct gl_framebuffer **) stfb);
}
/**
* Return the pipe_surface for the given renderbuffer.
*/
struct pipe_surface *
st_get_framebuffer_surface(struct st_framebuffer *stfb, uint surfIndex)
{
struct st_renderbuffer *strb;
assert(surfIndex <= ST_SURFACE_BACK_RIGHT);
/* sanity checks, ST tokens should match Mesa tokens */
assert(ST_SURFACE_FRONT_LEFT == BUFFER_FRONT_LEFT);
assert(ST_SURFACE_BACK_RIGHT == BUFFER_BACK_RIGHT);
strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
if (strb)
return strb->surface;
return NULL;
}
/**
* This function is to be called prior to SwapBuffers on the given
* framebuffer. It checks if the current context is bound to the framebuffer
* and flushes rendering if needed.
*/
void
st_notify_swapbuffers(struct st_framebuffer *stfb)
{
GET_CURRENT_CONTEXT(ctx);
if (ctx && ctx->DrawBuffer == &stfb->Base) {
st_flush(ctx->st, 0x0);
}
}
void *st_framebuffer_private( struct st_framebuffer *stfb )
{
return stfb->Private;
}
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