| /************************************************************************** |
| * |
| * Copyright 2007 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. |
| * |
| **************************************************************************/ |
| |
| /* |
| * Authors: |
| * Keith Whitwell <keith@tungstengraphics.com> |
| * Brian Paul |
| */ |
| |
| #include "st_context.h" |
| #include "st_atom.h" |
| #include "st_cb_fbo.h" |
| #include "st_texture.h" |
| #include "pipe/p_context.h" |
| #include "cso_cache/cso_context.h" |
| #include "util/u_math.h" |
| #include "util/u_inlines.h" |
| |
| |
| |
| /** |
| * When doing GL render to texture, we have to be sure that finalize_texture() |
| * didn't yank out the pipe_resource that we earlier created a surface for. |
| * Check for that here and create a new surface if needed. |
| */ |
| static void |
| update_renderbuffer_surface(struct st_context *st, |
| struct st_renderbuffer *strb) |
| { |
| struct pipe_screen *screen = st->pipe->screen; |
| struct pipe_resource *resource = strb->rtt->pt; |
| int rtt_width = strb->Base.Width; |
| int rtt_height = strb->Base.Height; |
| |
| if (!strb->surface || |
| strb->surface->texture != resource || |
| strb->surface->width != rtt_width || |
| strb->surface->height != rtt_height) { |
| GLuint level; |
| /* find matching mipmap level size */ |
| for (level = 0; level <= resource->last_level; level++) { |
| if (u_minify(resource->width0, level) == rtt_width && |
| u_minify(resource->height0, level) == rtt_height) { |
| |
| pipe_surface_reference(&strb->surface, NULL); |
| |
| strb->surface = screen->get_tex_surface(screen, |
| resource, |
| strb->rtt_face, |
| level, |
| strb->rtt_slice, |
| PIPE_BIND_RENDER_TARGET); |
| #if 0 |
| printf("-- alloc new surface %d x %d into tex %p\n", |
| strb->surface->width, strb->surface->height, |
| texture); |
| #endif |
| break; |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * Update framebuffer state (color, depth, stencil, etc. buffers) |
| */ |
| static void |
| update_framebuffer_state( struct st_context *st ) |
| { |
| struct pipe_framebuffer_state *framebuffer = &st->state.framebuffer; |
| struct gl_framebuffer *fb = st->ctx->DrawBuffer; |
| struct st_renderbuffer *strb; |
| GLuint i; |
| |
| framebuffer->width = fb->Width; |
| framebuffer->height = fb->Height; |
| |
| /*printf("------ fb size %d x %d\n", fb->Width, fb->Height);*/ |
| |
| /* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state |
| * to determine which surfaces to draw to |
| */ |
| framebuffer->nr_cbufs = 0; |
| for (i = 0; i < fb->_NumColorDrawBuffers; i++) { |
| strb = st_renderbuffer(fb->_ColorDrawBuffers[i]); |
| |
| if (strb) { |
| /*printf("--------- framebuffer surface rtt %p\n", strb->rtt);*/ |
| if (strb->rtt) { |
| /* rendering to a GL texture, may have to update surface */ |
| update_renderbuffer_surface(st, strb); |
| } |
| |
| if (strb->surface) { |
| pipe_surface_reference(&framebuffer->cbufs[framebuffer->nr_cbufs], |
| strb->surface); |
| framebuffer->nr_cbufs++; |
| } |
| strb->defined = GL_TRUE; /* we'll be drawing something */ |
| } |
| } |
| for (i = framebuffer->nr_cbufs; i < PIPE_MAX_COLOR_BUFS; i++) { |
| pipe_surface_reference(&framebuffer->cbufs[i], NULL); |
| } |
| |
| /* |
| * Depth/Stencil renderbuffer/surface. |
| */ |
| strb = st_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer); |
| if (strb) { |
| strb = st_renderbuffer(strb->Base.Wrapped); |
| if (strb->rtt) { |
| /* rendering to a GL texture, may have to update surface */ |
| update_renderbuffer_surface(st, strb); |
| } |
| pipe_surface_reference(&framebuffer->zsbuf, strb->surface); |
| } |
| else { |
| strb = st_renderbuffer(fb->Attachment[BUFFER_STENCIL].Renderbuffer); |
| if (strb) { |
| strb = st_renderbuffer(strb->Base.Wrapped); |
| assert(strb->surface); |
| pipe_surface_reference(&framebuffer->zsbuf, strb->surface); |
| } |
| else |
| pipe_surface_reference(&framebuffer->zsbuf, NULL); |
| } |
| |
| #ifdef DEBUG |
| /* Make sure the resource binding flags were set properly */ |
| for (i = 0; i < framebuffer->nr_cbufs; i++) { |
| assert(framebuffer->cbufs[i]->texture->bind & PIPE_BIND_RENDER_TARGET); |
| } |
| if (framebuffer->zsbuf) { |
| assert(framebuffer->zsbuf->texture->bind & PIPE_BIND_DEPTH_STENCIL); |
| } |
| #endif |
| |
| cso_set_framebuffer(st->cso_context, framebuffer); |
| } |
| |
| |
| const struct st_tracked_state st_update_framebuffer = { |
| "st_update_framebuffer", /* name */ |
| { /* dirty */ |
| _NEW_BUFFERS, /* mesa */ |
| ST_NEW_FRAMEBUFFER, /* st */ |
| }, |
| update_framebuffer_state /* update */ |
| }; |
| |