155 lines
5.1 KiB
C
155 lines
5.1 KiB
C
/**************************************************************************
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*
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* Copyright 2007 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "pipe/p_defines.h"
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#include "util/u_memory.h"
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#include "lp_context.h"
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#include "lp_state.h"
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#include "lp_setup.h"
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#include "draw/draw_context.h"
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struct lp_rast_state {
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struct pipe_rasterizer_state lp_state;
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struct pipe_rasterizer_state draw_state;
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};
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/* State which might be handled in either the draw module or locally.
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* This function is used to turn that state off in one of the two
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* places.
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*/
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static void
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clear_flags(struct pipe_rasterizer_state *rast)
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{
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rast->light_twoside = 0;
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rast->offset_tri = 0;
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rast->offset_line = 0;
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rast->offset_point = 0;
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rast->offset_units = 0.0f;
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rast->offset_scale = 0.0f;
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}
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static void *
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llvmpipe_create_rasterizer_state(struct pipe_context *pipe,
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const struct pipe_rasterizer_state *rast)
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{
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boolean need_pipeline;
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/* Partition rasterizer state into what we want the draw module to
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* handle, and what we'll look after ourselves.
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*/
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struct lp_rast_state *state = MALLOC_STRUCT(lp_rast_state);
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if (state == NULL)
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return NULL;
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memcpy(&state->draw_state, rast, sizeof *rast);
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memcpy(&state->lp_state, rast, sizeof *rast);
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/* We rely on draw module to do unfilled polyons, AA lines and
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* points and stipple.
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*
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* Over time, reduce this list of conditions, and expand the list
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* of flags which get cleared in clear_flags().
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*/
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need_pipeline = (rast->fill_front != PIPE_POLYGON_MODE_FILL ||
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rast->fill_back != PIPE_POLYGON_MODE_FILL ||
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rast->point_smooth ||
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rast->line_smooth ||
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rast->line_stipple_enable ||
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rast->poly_stipple_enable);
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/* If not using the pipeline, clear out the flags which we can
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* handle ourselves. If we *are* using the pipeline, do everything
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* on the pipeline and clear those flags on our internal copy of
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* the state.
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*/
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if (need_pipeline)
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clear_flags(&state->lp_state);
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else
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clear_flags(&state->draw_state);
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return state;
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}
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static void
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llvmpipe_bind_rasterizer_state(struct pipe_context *pipe, void *handle)
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{
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struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
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const struct lp_rast_state *state =
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(const struct lp_rast_state *) handle;
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if (state) {
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llvmpipe->rasterizer = &state->lp_state;
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draw_set_rasterizer_state(llvmpipe->draw, &state->draw_state, handle);
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/* XXX: just pass lp_state directly to setup.
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*/
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lp_setup_set_triangle_state( llvmpipe->setup,
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state->lp_state.cull_face,
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state->lp_state.front_ccw,
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state->lp_state.scissor,
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state->lp_state.half_pixel_center,
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state->lp_state.bottom_edge_rule);
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lp_setup_set_flatshade_first( llvmpipe->setup,
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state->lp_state.flatshade_first);
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lp_setup_set_line_state( llvmpipe->setup,
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state->lp_state.line_width);
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lp_setup_set_point_state( llvmpipe->setup,
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state->lp_state.point_size,
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state->lp_state.point_size_per_vertex,
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state->lp_state.sprite_coord_enable,
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state->lp_state.sprite_coord_mode);
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}
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else {
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llvmpipe->rasterizer = NULL;
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draw_set_rasterizer_state(llvmpipe->draw, NULL, handle);
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}
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llvmpipe->dirty |= LP_NEW_RASTERIZER;
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}
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static void
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llvmpipe_delete_rasterizer_state(struct pipe_context *pipe,
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void *rasterizer)
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{
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FREE( rasterizer );
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}
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void
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llvmpipe_init_rasterizer_funcs(struct llvmpipe_context *llvmpipe)
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{
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llvmpipe->pipe.create_rasterizer_state = llvmpipe_create_rasterizer_state;
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llvmpipe->pipe.bind_rasterizer_state = llvmpipe_bind_rasterizer_state;
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llvmpipe->pipe.delete_rasterizer_state = llvmpipe_delete_rasterizer_state;
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}
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