diff options
Diffstat (limited to 'src/mesa/state_tracker/st_cb_fbo.c')
-rw-r--r-- | src/mesa/state_tracker/st_cb_fbo.c | 56 |
1 files changed, 42 insertions, 14 deletions
diff --git a/src/mesa/state_tracker/st_cb_fbo.c b/src/mesa/state_tracker/st_cb_fbo.c index ec7788923a..b1a56f3ca6 100644 --- a/src/mesa/state_tracker/st_cb_fbo.c +++ b/src/mesa/state_tracker/st_cb_fbo.c @@ -80,6 +80,8 @@ init_renderbuffer_bits(struct st_renderbuffer *strb, /** * gl_renderbuffer::AllocStorage() + * This is called to allocate the original drawing surface, and + * during window resize. */ static GLboolean st_renderbuffer_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb, @@ -90,8 +92,10 @@ st_renderbuffer_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb, struct st_renderbuffer *strb = st_renderbuffer(rb); enum pipe_format pipeFormat; GLbitfield flags = 0x0; /* XXX needed? */ + int ret; if (!strb->surface) { + /* first time surface creation */ strb->surface = pipe->winsys->surface_alloc(pipe->winsys); assert(strb->surface); assert(strb->surface->refcount); @@ -99,10 +103,10 @@ st_renderbuffer_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb, if (!strb->surface) return GL_FALSE; } - - if (strb->surface->buffer) - pipe_buffer_reference(pipe->winsys, &strb->surface->buffer, - NULL); + else if (strb->surface->buffer) { + /* release/discard the old surface buffer */ + pipe_buffer_reference(pipe->winsys, &strb->surface->buffer, NULL); + } /* Determine surface format here */ if (strb->format != PIPE_FORMAT_NONE) { @@ -116,20 +120,44 @@ st_renderbuffer_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb, init_renderbuffer_bits(strb, pipeFormat); - pipe->winsys->surface_alloc_storage(pipe->winsys, - strb->surface, - width, - height, - pipeFormat, - flags); - if (!strb->surface->buffer) - return GL_FALSE; /* out of memory, try s/w buffer? */ + ret = pipe->winsys->surface_alloc_storage(pipe->winsys, + strb->surface, + width, + height, + pipeFormat, + flags); + if (ret || !strb->surface->buffer) { + if (pipeFormat == DEFAULT_ACCUM_PIPE_FORMAT) { + /* Accum buffer. Try a different surface format. Since accum + * buffers are s/w only for now, the surface pixel format doesn't + * really matter, only that the buffer is large enough. + */ + int sz, mult; + enum pipe_format accum_format; + + /* allocate a buffer of (typically) double height to get 64bpp */ + accum_format = st_choose_renderbuffer_format(pipe, GL_RGBA); + sz = pf_get_size(accum_format); + mult = pf_get_size(DEFAULT_ACCUM_PIPE_FORMAT) / sz; + + ret = pipe->winsys->surface_alloc_storage(pipe->winsys, + strb->surface, + width, height * mult, + accum_format, flags); + if (ret) + return GL_FALSE; /* we've _really_ failed */ + + } + else { + return GL_FALSE; /* out of memory, try s/w buffer? */ + } + } ASSERT(strb->surface->buffer); ASSERT(strb->surface->format); ASSERT(strb->surface->cpp); ASSERT(strb->surface->width == width); - ASSERT(strb->surface->height == height); + /*ASSERT(strb->surface->height == height);*/ ASSERT(strb->surface->pitch); strb->Base.Width = width; @@ -247,7 +275,7 @@ st_new_renderbuffer_fb(enum pipe_format format) strb->Base.InternalFormat = GL_STENCIL_INDEX8_EXT; strb->Base._BaseFormat = GL_STENCIL_INDEX; break; - case PIPE_FORMAT_R16G16B16A16_SNORM: + case DEFAULT_ACCUM_PIPE_FORMAT: /*PIPE_FORMAT_R16G16B16A16_SNORM*/ strb->Base.InternalFormat = GL_RGBA16; strb->Base._BaseFormat = GL_RGBA; break; |