/************************************************************************** * * 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" #include "pipe/p_defines.h" #include "pipe/p_context.h" struct st_framebuffer * st_create_framebuffer( const __GLcontextModes *visual, enum pipe_format colorFormat, enum pipe_format depthFormat, enum pipe_format stencilFormat, uint width, uint height, void *private) { struct st_framebuffer *stfb = CALLOC_STRUCT(st_framebuffer); if (stfb) { _mesa_initialize_framebuffer(&stfb->Base, visual); { /* fake frontbuffer */ /* XXX allocation should only happen in the unusual case it's actually needed */ struct gl_renderbuffer *rb = st_new_renderbuffer_fb(colorFormat); _mesa_add_renderbuffer(&stfb->Base, BUFFER_FRONT_LEFT, rb); } if (visual->doubleBufferMode) { struct gl_renderbuffer *rb = st_new_renderbuffer_fb(colorFormat); _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(depthFormat); /* 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(depthFormat); _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(depthFormat); _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(depthFormat); _mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthRb); } if (visual->stencilBits > 0) { /* 8-bit stencil */ struct gl_renderbuffer *stencilRb = st_new_renderbuffer_fb(stencilFormat); _mesa_add_renderbuffer(&stfb->Base, BUFFER_STENCIL, stencilRb); } } if (visual->accumRedBits > 0) { /* 16-bit/channel accum */ struct gl_renderbuffer *accumRb = st_new_renderbuffer_fb(PIPE_FORMAT_R16G16B16A16_SNORM); _mesa_add_renderbuffer(&stfb->Base, BUFFER_ACCUM, accumRb); } stfb->Base.Initialized = GL_TRUE; stfb->InitWidth = width; stfb->InitHeight = height; 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) { if (stfb->InitWidth == 0 && stfb->InitHeight == 0) { /* didn't have a valid size until now */ stfb->InitWidth = width; stfb->InitHeight = height; if (ctx->Viewport.Width <= 1) { /* set context's initial viewport/scissor size */ _mesa_set_viewport(ctx, 0, 0, width, height); _mesa_set_scissor(ctx, 0, 0, width, height); } } _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_DEPTH); /* 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, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_SWAPBUFFERS); } } /** * Quick hack - allows the winsys to inform the driver that surface * states are now undefined after a glXSwapBuffers or similar. */ void st_notify_swapbuffers_complete(struct st_framebuffer *stfb) { GET_CURRENT_CONTEXT(ctx); if (ctx && ctx->DrawBuffer == &stfb->Base) { struct st_renderbuffer *strb; int i; for (i = 0; i < BUFFER_COUNT; i++) { if (stfb->Base.Attachment[i].Renderbuffer) { strb = st_renderbuffer(stfb->Base.Attachment[i].Renderbuffer); strb->surface->status = PIPE_SURFACE_STATUS_UNDEFINED; } } } } void *st_framebuffer_private( struct st_framebuffer *stfb ) { return stfb->Private; }