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/************************************************************************** |
* |
* 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" |
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/** |
* 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_context *pipe = st->pipe; |
struct pipe_resource *resource = strb->rtt->pt; |
int rtt_width = strb->Base.Width; |
int rtt_height = strb->Base.Height; |
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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) { |
struct pipe_surface surf_tmpl; |
memset(&surf_tmpl, 0, sizeof(surf_tmpl)); |
surf_tmpl.format = resource->format; |
surf_tmpl.usage = PIPE_BIND_RENDER_TARGET; |
surf_tmpl.u.tex.level = level; |
surf_tmpl.u.tex.first_layer = strb->rtt_face + strb->rtt_slice; |
surf_tmpl.u.tex.last_layer = strb->rtt_face + strb->rtt_slice; |
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pipe_surface_reference(&strb->surface, NULL); |
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strb->surface = pipe->create_surface(pipe, |
resource, |
&surf_tmpl); |
#if 0 |
printf("-- alloc new surface %d x %d into tex %p\n", |
strb->surface->width, strb->surface->height, |
texture); |
#endif |
break; |
} |
} |
} |
} |
|
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/** |
* 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; |
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/*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); |
} |
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#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 |
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cso_set_framebuffer(st->cso_context, framebuffer); |
} |
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const struct st_tracked_state st_update_framebuffer = { |
"st_update_framebuffer", /* name */ |
{ /* dirty */ |
_NEW_BUFFERS, /* mesa */ |
ST_NEW_FRAMEBUFFER, /* st */ |
}, |
update_framebuffer_state /* update */ |
}; |
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