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/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* 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.
*
**************************************************************************/
/**
* @author Jose Fonseca <jfonseca@vmware.com>
* @author Keith Whitwell <keith@tungstengraphics.com>
*/
#include "util/u_memory.h"
#include "util/u_math.h"
#include "util/u_dump.h"
#include "draw/draw_context.h"
#include "lp_screen.h"
#include "lp_context.h"
#include "lp_state.h"
#include "lp_debug.h"
static void *
llvmpipe_create_blend_state(struct pipe_context *pipe,
const struct pipe_blend_state *blend)
{
struct pipe_blend_state *state = mem_dup(blend, sizeof *blend);
int i;
if (LP_PERF & PERF_NO_BLEND) {
state->independent_blend_enable = 0;
for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
state->rt[i].blend_enable = 0;
}
return state;
}
static void
llvmpipe_bind_blend_state(struct pipe_context *pipe, void *blend)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
if (llvmpipe->blend == blend)
return;
draw_flush(llvmpipe->draw);
llvmpipe->blend = blend;
llvmpipe->dirty |= LP_NEW_BLEND;
}
static void
llvmpipe_delete_blend_state(struct pipe_context *pipe, void *blend)
{
FREE( blend );
}
static void
llvmpipe_set_blend_color(struct pipe_context *pipe,
const struct pipe_blend_color *blend_color)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
if(!blend_color)
return;
if(memcmp(&llvmpipe->blend_color, blend_color, sizeof *blend_color) == 0)
return;
draw_flush(llvmpipe->draw);
memcpy(&llvmpipe->blend_color, blend_color, sizeof *blend_color);
llvmpipe->dirty |= LP_NEW_BLEND_COLOR;
}
/** XXX move someday? Or consolidate all these simple state setters
* into one file.
*/
static void *
llvmpipe_create_depth_stencil_state(struct pipe_context *pipe,
const struct pipe_depth_stencil_alpha_state *depth_stencil)
{
struct pipe_depth_stencil_alpha_state *state;
state = mem_dup(depth_stencil, sizeof *depth_stencil);
if (LP_PERF & PERF_NO_DEPTH) {
state->depth.enabled = 0;
state->depth.writemask = 0;
state->stencil[0].enabled = 0;
state->stencil[1].enabled = 0;
}
if (LP_PERF & PERF_NO_ALPHATEST) {
state->alpha.enabled = 0;
}
return state;
}
static void
llvmpipe_bind_depth_stencil_state(struct pipe_context *pipe,
void *depth_stencil)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
if (llvmpipe->depth_stencil == depth_stencil)
return;
draw_flush(llvmpipe->draw);
llvmpipe->depth_stencil = depth_stencil;
llvmpipe->dirty |= LP_NEW_DEPTH_STENCIL_ALPHA;
}
static void
llvmpipe_delete_depth_stencil_state(struct pipe_context *pipe, void *depth)
{
FREE( depth );
}
static void
llvmpipe_set_stencil_ref(struct pipe_context *pipe,
const struct pipe_stencil_ref *stencil_ref)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
if(!stencil_ref)
return;
if(memcmp(&llvmpipe->stencil_ref, stencil_ref, sizeof *stencil_ref) == 0)
return;
draw_flush(llvmpipe->draw);
memcpy(&llvmpipe->stencil_ref, stencil_ref, sizeof *stencil_ref);
/* not sure. want new flag? */
llvmpipe->dirty |= LP_NEW_DEPTH_STENCIL_ALPHA;
}
static void
llvmpipe_set_sample_mask(struct pipe_context *pipe,
unsigned sample_mask)
{
}
void
llvmpipe_init_blend_funcs(struct llvmpipe_context *llvmpipe)
{
llvmpipe->pipe.create_blend_state = llvmpipe_create_blend_state;
llvmpipe->pipe.bind_blend_state = llvmpipe_bind_blend_state;
llvmpipe->pipe.delete_blend_state = llvmpipe_delete_blend_state;
llvmpipe->pipe.create_depth_stencil_alpha_state = llvmpipe_create_depth_stencil_state;
llvmpipe->pipe.bind_depth_stencil_alpha_state = llvmpipe_bind_depth_stencil_state;
llvmpipe->pipe.delete_depth_stencil_alpha_state = llvmpipe_delete_depth_stencil_state;
llvmpipe->pipe.set_blend_color = llvmpipe_set_blend_color;
llvmpipe->pipe.set_stencil_ref = llvmpipe_set_stencil_ref;
llvmpipe->pipe.set_sample_mask = llvmpipe_set_sample_mask;
}
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