diff options
Diffstat (limited to 'src/gallium/drivers/softpipe/sp_draw_arrays.c')
| -rw-r--r-- | src/gallium/drivers/softpipe/sp_draw_arrays.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_draw_arrays.c b/src/gallium/drivers/softpipe/sp_draw_arrays.c new file mode 100644 index 0000000000..424bd56846 --- /dev/null +++ b/src/gallium/drivers/softpipe/sp_draw_arrays.c @@ -0,0 +1,202 @@ +/************************************************************************** + * + * 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: + * Brian Paul + * Keith Whitwell + */ + + +#include "pipe/p_defines.h" +#include "pipe/p_context.h" +#include "pipe/p_winsys.h" +#include "pipe/p_inlines.h" + +#include "sp_context.h" +#include "sp_state.h" + +#include "draw/draw_context.h" + + + +static void +softpipe_map_constant_buffers(struct softpipe_context *sp) +{ + struct pipe_winsys *ws = sp->pipe.winsys; + uint i; + for (i = 0; i < PIPE_SHADER_TYPES; i++) { + if (sp->constants[i].size) + sp->mapped_constants[i] = ws->buffer_map(ws, sp->constants[i].buffer, + PIPE_BUFFER_USAGE_CPU_READ); + } + + draw_set_mapped_constant_buffer(sp->draw, + sp->mapped_constants[PIPE_SHADER_VERTEX], + sp->constants[PIPE_SHADER_VERTEX].size); +} + +static void +softpipe_unmap_constant_buffers(struct softpipe_context *sp) +{ + struct pipe_winsys *ws = sp->pipe.winsys; + uint i; + + /* really need to flush all prims since the vert/frag shaders const buffers + * are going away now. + */ + draw_flush(sp->draw); + + draw_set_mapped_constant_buffer(sp->draw, NULL, 0); + + for (i = 0; i < 2; i++) { + if (sp->constants[i].size) + ws->buffer_unmap(ws, sp->constants[i].buffer); + sp->mapped_constants[i] = NULL; + } +} + + +static unsigned reduced_prim[PIPE_PRIM_POLYGON + 1] = { + PIPE_PRIM_POINTS, + PIPE_PRIM_LINES, + PIPE_PRIM_LINES, + PIPE_PRIM_LINES, + PIPE_PRIM_TRIANGLES, + PIPE_PRIM_TRIANGLES, + PIPE_PRIM_TRIANGLES, + PIPE_PRIM_TRIANGLES, + PIPE_PRIM_TRIANGLES, + PIPE_PRIM_TRIANGLES +}; + + +boolean +softpipe_draw_arrays(struct pipe_context *pipe, unsigned mode, + unsigned start, unsigned count) +{ + return softpipe_draw_elements(pipe, NULL, 0, mode, start, count); +} + + + +/** + * Draw vertex arrays, with optional indexing. + * Basically, map the vertex buffers (and drawing surfaces), then hand off + * the drawing to the 'draw' module. + * + * XXX should the element buffer be specified/bound with a separate function? + */ + +boolean +softpipe_draw_range_elements(struct pipe_context *pipe, + struct pipe_buffer *indexBuffer, + unsigned indexSize, + unsigned min_index, + unsigned max_index, + unsigned mode, unsigned start, unsigned count) +{ + struct softpipe_context *sp = softpipe_context(pipe); + struct draw_context *draw = sp->draw; + unsigned i; + + sp->reduced_api_prim = reduced_prim[mode]; + + if (sp->dirty) + softpipe_update_derived( sp ); + + softpipe_map_surfaces(sp); + softpipe_map_constant_buffers(sp); + + /* + * Map vertex buffers + */ + for (i = 0; i < sp->num_vertex_buffers; i++) { + void *buf + = pipe_buffer_map(pipe->screen, + sp->vertex_buffer[i].buffer, + PIPE_BUFFER_USAGE_CPU_READ); + draw_set_mapped_vertex_buffer(draw, i, buf); + } + /* Map index buffer, if present */ + if (indexBuffer) { + void *mapped_indexes + = pipe_buffer_map(pipe->screen, indexBuffer, + PIPE_BUFFER_USAGE_CPU_READ); + draw_set_mapped_element_buffer_range(draw, indexSize, + min_index, + max_index, + mapped_indexes); + } + else { + /* no index/element buffer */ + draw_set_mapped_element_buffer_range(draw, 0, start, start + count - 1, NULL); + } + + + /* draw! */ + draw_arrays(draw, mode, start, count); + + /* + * unmap vertex/index buffers - will cause draw module to flush + */ + for (i = 0; i < sp->num_vertex_buffers; i++) { + draw_set_mapped_vertex_buffer(draw, i, NULL); + pipe_buffer_unmap(pipe->screen, sp->vertex_buffer[i].buffer); + } + if (indexBuffer) { + draw_set_mapped_element_buffer(draw, 0, NULL); + pipe_buffer_unmap(pipe->screen, indexBuffer); + } + + + /* Note: leave drawing surfaces mapped */ + softpipe_unmap_constant_buffers(sp); + + return TRUE; +} + +boolean +softpipe_draw_elements(struct pipe_context *pipe, + struct pipe_buffer *indexBuffer, + unsigned indexSize, + unsigned mode, unsigned start, unsigned count) +{ + return softpipe_draw_range_elements( pipe, indexBuffer, + indexSize, + 0, 0xffffffff, + mode, start, count ); +} + + + +void +softpipe_set_edgeflags(struct pipe_context *pipe, const unsigned *edgeflags) +{ + struct softpipe_context *sp = softpipe_context(pipe); + draw_set_edgeflags(sp->draw, edgeflags); +} + |