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gallium: more flush/finish changes

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New, separate is_front_buffer_dirty() function.
This commit is contained in:
Brian Paul 2008-04-09 16:59:14 -06:00
parent 4ecbd5a70f
commit 54d7c399a8
1 changed files with 38 additions and 28 deletions
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66
src/mesa/state_tracker/st_cb_flush.c
View file

@ -44,14 +44,13 @@
#include "pipe/p_winsys.h"
static void
flush_front_buffer(struct st_context *st, uint pipeFlushFlags,
struct pipe_fence_handle **fence)
static GLboolean
is_front_buffer_dirty(struct st_context *st)
{
GLframebuffer *fb = st->ctx->DrawBuffer;
if (!fb)
return;
return GL_FALSE;
/* XXX: temporary hack. This flag should only be set if we do any
* rendering to the front buffer.
@ -68,26 +67,26 @@ flush_front_buffer(struct st_context *st, uint pipeFlushFlags,
st->flags.frontbuffer_dirty
= (fb->_ColorDrawBufferMask[0] & BUFFER_BIT_FRONT_LEFT);
if (st->flags.frontbuffer_dirty) {
struct st_renderbuffer *strb
= st_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
struct pipe_surface *front_surf = strb->surface;
return st->flags.frontbuffer_dirty;
}
/* If we aren't rendering to the frontbuffer, this is a noop.
* This should be uncontroversial for glFlush, though people may
* feel more strongly about glFinish.
*
* Additionally, need to make sure that the frontbuffer_dirty
* flag really gets set on frontbuffer rendering.
*/
st->pipe->flush( st->pipe, pipeFlushFlags, fence );
/* Hook for copying "fake" frontbuffer if necessary:
*/
st->pipe->winsys->flush_frontbuffer( st->pipe->winsys, front_surf,
st->pipe->priv );
st->flags.frontbuffer_dirty = 0;
}
/**
* Tell the winsys to display the front color buffer on-screen.
*/
static void
display_front_buffer(struct st_context *st)
{
GLframebuffer *fb = st->ctx->DrawBuffer;
struct st_renderbuffer *strb
= st_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
struct pipe_surface *front_surf = strb->surface;
/* Hook for copying "fake" frontbuffer if necessary:
*/
st->pipe->winsys->flush_frontbuffer( st->pipe->winsys, front_surf,
st->pipe->priv );
st->flags.frontbuffer_dirty = 0;
}
@ -102,6 +101,9 @@ void st_flush( struct st_context *st, uint pipeFlushFlags,
}
/**
* Flush, and wait for completion.
*/
void st_finish( struct st_context *st )
{
struct pipe_fence_handle *fence = NULL;
@ -119,11 +121,15 @@ void st_finish( struct st_context *st )
*/
static void st_glFlush(GLcontext *ctx)
{
st_flush_bitmap_cache(ctx->st);
struct st_context *st = ctx->st;
FLUSH_VERTICES(ctx, 0);
flush_front_buffer(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
if (is_front_buffer_dirty(st)) {
st_finish(st);
display_front_buffer(st);
}
else {
st_flush(st, PIPE_FLUSH_RENDER_CACHE, NULL);
}
}
@ -132,9 +138,13 @@ static void st_glFlush(GLcontext *ctx)
*/
static void st_glFinish(GLcontext *ctx)
{
st_finish( ctx->st );
struct st_context *st = ctx->st;
flush_front_buffer(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
st_finish(st);
if (is_front_buffer_dirty(st)) {
display_front_buffer(st);
}
}