193 lines
5.8 KiB
C
193 lines
5.8 KiB
C
/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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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 TUNGSTEN GRAPHICS 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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/* Author:
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* Brian Paul
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* Keith Whitwell
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*/
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#include "pipe/p_defines.h"
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#include "pipe/p_context.h"
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#include "pipe/internal/p_winsys_screen.h"
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#include "pipe/p_inlines.h"
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#include "util/u_prim.h"
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#include "lp_buffer.h"
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#include "lp_context.h"
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#include "lp_state.h"
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#include "draw/draw_context.h"
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static void
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llvmpipe_map_constant_buffers(struct llvmpipe_context *lp)
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{
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struct pipe_screen *screen = lp->pipe.screen;
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uint i, size;
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for (i = 0; i < PIPE_SHADER_TYPES; i++) {
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if (lp->constants[i].buffer && lp->constants[i].buffer->size)
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lp->mapped_constants[i] = screen->buffer_map(screen, lp->constants[i].buffer,
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PIPE_BUFFER_USAGE_CPU_READ);
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}
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if (lp->constants[PIPE_SHADER_VERTEX].buffer)
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size = lp->constants[PIPE_SHADER_VERTEX].buffer->size;
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else
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size = 0;
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lp->jit_context.constants = lp->mapped_constants[PIPE_SHADER_FRAGMENT];
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draw_set_mapped_constant_buffer(lp->draw,
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lp->mapped_constants[PIPE_SHADER_VERTEX],
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size);
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}
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static void
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llvmpipe_unmap_constant_buffers(struct llvmpipe_context *lp)
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{
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struct pipe_screen *screen = lp->pipe.screen;
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uint i;
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/* really need to flush all prims since the vert/frag shaders const buffers
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* are going away now.
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*/
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draw_flush(lp->draw);
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draw_set_mapped_constant_buffer(lp->draw, NULL, 0);
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lp->jit_context.constants = NULL;
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for (i = 0; i < 2; i++) {
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if (lp->constants[i].buffer && lp->constants[i].buffer->size)
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screen->buffer_unmap(screen, lp->constants[i].buffer);
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lp->mapped_constants[i] = NULL;
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}
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}
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boolean
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llvmpipe_draw_arrays(struct pipe_context *pipe, unsigned mode,
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unsigned start, unsigned count)
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{
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return llvmpipe_draw_elements(pipe, NULL, 0, mode, start, count);
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}
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/**
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* Draw vertex arrays, with optional indexing.
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* Basically, map the vertex buffers (and drawing surfaces), then hand off
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* the drawing to the 'draw' module.
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*/
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boolean
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llvmpipe_draw_range_elements(struct pipe_context *pipe,
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struct pipe_buffer *indexBuffer,
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unsigned indexSize,
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unsigned min_index,
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unsigned max_index,
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unsigned mode, unsigned start, unsigned count)
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{
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struct llvmpipe_context *lp = llvmpipe_context(pipe);
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struct draw_context *draw = lp->draw;
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unsigned i;
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lp->reduced_api_prim = u_reduced_prim(mode);
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if (lp->dirty)
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llvmpipe_update_derived( lp );
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llvmpipe_map_transfers(lp);
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llvmpipe_map_constant_buffers(lp);
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/*
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* Map vertex buffers
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*/
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for (i = 0; i < lp->num_vertex_buffers; i++) {
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void *buf = llvmpipe_buffer(lp->vertex_buffer[i].buffer)->data;
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draw_set_mapped_vertex_buffer(draw, i, buf);
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}
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/* Map index buffer, if present */
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if (indexBuffer) {
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void *mapped_indexes = llvmpipe_buffer(indexBuffer)->data;
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draw_set_mapped_element_buffer_range(draw, indexSize,
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min_index,
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max_index,
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mapped_indexes);
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}
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else {
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/* no index/element buffer */
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draw_set_mapped_element_buffer_range(draw, 0, start,
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start + count - 1, NULL);
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}
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/* draw! */
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draw_arrays(draw, mode, start, count);
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/*
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* unmap vertex/index buffers - will cause draw module to flush
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*/
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for (i = 0; i < lp->num_vertex_buffers; i++) {
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draw_set_mapped_vertex_buffer(draw, i, NULL);
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}
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if (indexBuffer) {
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draw_set_mapped_element_buffer(draw, 0, NULL);
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}
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/* Note: leave drawing surfaces mapped */
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llvmpipe_unmap_constant_buffers(lp);
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lp->dirty_render_cache = TRUE;
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return TRUE;
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}
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boolean
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llvmpipe_draw_elements(struct pipe_context *pipe,
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struct pipe_buffer *indexBuffer,
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unsigned indexSize,
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unsigned mode, unsigned start, unsigned count)
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{
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return llvmpipe_draw_range_elements( pipe, indexBuffer,
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indexSize,
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0, 0xffffffff,
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mode, start, count );
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}
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void
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llvmpipe_set_edgeflags(struct pipe_context *pipe, const unsigned *edgeflags)
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{
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struct llvmpipe_context *lp = llvmpipe_context(pipe);
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draw_set_edgeflags(lp->draw, edgeflags);
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}
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