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Diffstat (limited to 'src/gallium/aux/draw/draw_context.c')
| -rw-r--r-- | src/gallium/aux/draw/draw_context.c | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/src/gallium/aux/draw/draw_context.c b/src/gallium/aux/draw/draw_context.c new file mode 100644 index 0000000000..4be3830316 --- /dev/null +++ b/src/gallium/aux/draw/draw_context.c @@ -0,0 +1,293 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + + /* + * Authors: + * Keith Whitwell <keith@tungstengraphics.com> + */ + + +#include "pipe/p_util.h" +#include "draw_context.h" +#include "draw_private.h" + + + +struct draw_context *draw_create( void ) +{ + struct draw_context *draw = CALLOC_STRUCT( draw_context ); + +#if defined(__i386__) || defined(__386__) + draw->use_sse = GETENV( "GALLIUM_NOSSE" ) == NULL; +#else + draw->use_sse = FALSE; +#endif + + /* create pipeline stages */ + draw->pipeline.wide = draw_wide_stage( draw ); + draw->pipeline.stipple = draw_stipple_stage( draw ); + draw->pipeline.unfilled = draw_unfilled_stage( draw ); + draw->pipeline.twoside = draw_twoside_stage( draw ); + draw->pipeline.offset = draw_offset_stage( draw ); + draw->pipeline.clip = draw_clip_stage( draw ); + draw->pipeline.flatshade = draw_flatshade_stage( draw ); + draw->pipeline.cull = draw_cull_stage( draw ); + draw->pipeline.validate = draw_validate_stage( draw ); + draw->pipeline.first = draw->pipeline.validate; + + ASSIGN_4V( draw->plane[0], -1, 0, 0, 1 ); + ASSIGN_4V( draw->plane[1], 1, 0, 0, 1 ); + ASSIGN_4V( draw->plane[2], 0, -1, 0, 1 ); + ASSIGN_4V( draw->plane[3], 0, 1, 0, 1 ); + ASSIGN_4V( draw->plane[4], 0, 0, 1, 1 ); /* yes these are correct */ + ASSIGN_4V( draw->plane[5], 0, 0, -1, 1 ); /* mesa's a bit wonky */ + draw->nr_planes = 6; + + /* Statically allocate maximum sized vertices for the cache - could be cleverer... + */ + { + uint i; + const unsigned size = (MAX_VERTEX_SIZE + 0x0f) & ~0x0f; + char *tmp = align_malloc(Elements(draw->vcache.vertex) * size, 16); + + for (i = 0; i < Elements(draw->vcache.vertex); i++) + draw->vcache.vertex[i] = (struct vertex_header *)(tmp + i * size); + } + + draw->shader_queue_flush = draw_vertex_shader_queue_flush; + + draw->convert_wide_points = TRUE; + draw->convert_wide_lines = TRUE; + + draw->reduced_prim = ~0; /* != any of PIPE_PRIM_x */ + + draw_vertex_cache_invalidate( draw ); + draw_set_mapped_element_buffer( draw, 0, NULL ); + + return draw; +} + + +void draw_destroy( struct draw_context *draw ) +{ + draw->pipeline.wide->destroy( draw->pipeline.wide ); + draw->pipeline.stipple->destroy( draw->pipeline.stipple ); + draw->pipeline.unfilled->destroy( draw->pipeline.unfilled ); + draw->pipeline.twoside->destroy( draw->pipeline.twoside ); + draw->pipeline.offset->destroy( draw->pipeline.offset ); + draw->pipeline.clip->destroy( draw->pipeline.clip ); + draw->pipeline.flatshade->destroy( draw->pipeline.flatshade ); + draw->pipeline.cull->destroy( draw->pipeline.cull ); + draw->pipeline.validate->destroy( draw->pipeline.validate ); + if (draw->pipeline.rasterize) + draw->pipeline.rasterize->destroy( draw->pipeline.rasterize ); + tgsi_exec_machine_free_data(&draw->machine); + align_free( draw->vcache.vertex[0] ); /* Frees all the vertices. */ + FREE( draw ); +} + + + +void draw_flush( struct draw_context *draw ) +{ + draw_do_flush( draw, DRAW_FLUSH_BACKEND ); +} + + + +/** + * Register new primitive rasterization/rendering state. + * This causes the drawing pipeline to be rebuilt. + */ +void draw_set_rasterizer_state( struct draw_context *draw, + const struct pipe_rasterizer_state *raster ) +{ + draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); + + draw->rasterizer = raster; +} + + +/** + * Plug in the primitive rendering/rasterization stage (which is the last + * stage in the drawing pipeline). + * This is provided by the device driver. + */ +void draw_set_rasterize_stage( struct draw_context *draw, + struct draw_stage *stage ) +{ + draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); + + draw->pipeline.rasterize = stage; +} + + +/** + * Set the draw module's clipping state. + */ +void draw_set_clip_state( struct draw_context *draw, + const struct pipe_clip_state *clip ) +{ + draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); + + assert(clip->nr <= PIPE_MAX_CLIP_PLANES); + memcpy(&draw->plane[6], clip->ucp, clip->nr * sizeof(clip->ucp[0])); + draw->nr_planes = 6 + clip->nr; +} + + +/** + * Set the draw module's viewport state. + */ +void draw_set_viewport_state( struct draw_context *draw, + const struct pipe_viewport_state *viewport ) +{ + draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); + draw->viewport = *viewport; /* struct copy */ +} + + + +void +draw_set_vertex_buffer(struct draw_context *draw, + unsigned attr, + const struct pipe_vertex_buffer *buffer) +{ + draw_do_flush( draw, DRAW_FLUSH_VERTEX_CACHE/*STATE_CHANGE*/ ); + assert(attr < PIPE_ATTRIB_MAX); + draw->vertex_buffer[attr] = *buffer; +} + + +void +draw_set_vertex_element(struct draw_context *draw, + unsigned attr, + const struct pipe_vertex_element *element) +{ + draw_do_flush( draw, DRAW_FLUSH_VERTEX_CACHE/*STATE_CHANGE*/ ); + assert(attr < PIPE_ATTRIB_MAX); + draw->vertex_element[attr] = *element; +} + + +/** + * Tell drawing context where to find mapped vertex buffers. + */ +void +draw_set_mapped_vertex_buffer(struct draw_context *draw, + unsigned attr, const void *buffer) +{ + draw_do_flush( draw, DRAW_FLUSH_VERTEX_CACHE/*STATE_CHANGE*/ ); + draw->user.vbuffer[attr] = buffer; +} + + +void +draw_set_mapped_constant_buffer(struct draw_context *draw, + const void *buffer) +{ + draw_do_flush( draw, DRAW_FLUSH_VERTEX_CACHE/*STATE_CHANGE*/ ); + draw->user.constants = buffer; +} + + +/** + * Tells the draw module whether to convert wide points (size != 1) + * into triangles. + */ +void +draw_convert_wide_points(struct draw_context *draw, boolean enable) +{ + draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); + draw->convert_wide_points = enable; +} + + +/** + * Tells the draw module whether to convert wide lines (width != 1) + * into triangles. + */ +void +draw_convert_wide_lines(struct draw_context *draw, boolean enable) +{ + draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); + draw->convert_wide_lines = enable; +} + + +/** + * Allocate space for temporary post-transform vertices, such as for clipping. + */ +void draw_alloc_temp_verts( struct draw_stage *stage, unsigned nr ) +{ + assert(!stage->tmp); + + stage->nr_tmps = nr; + + if (nr) { + ubyte *store = (ubyte *) MALLOC( MAX_VERTEX_SIZE * nr ); + unsigned i; + + stage->tmp = (struct vertex_header **) MALLOC( sizeof(struct vertex_header *) * nr ); + + for (i = 0; i < nr; i++) + stage->tmp[i] = (struct vertex_header *)(store + i * MAX_VERTEX_SIZE); + } +} + + +void draw_free_temp_verts( struct draw_stage *stage ) +{ + if (stage->tmp) { + FREE( stage->tmp[0] ); + FREE( stage->tmp ); + stage->tmp = NULL; + } +} + + +boolean draw_use_sse(struct draw_context *draw) +{ + return (boolean) draw->use_sse; +} + + +void draw_reset_vertex_ids(struct draw_context *draw) +{ + struct draw_stage *stage = draw->pipeline.first; + + while (stage) { + unsigned i; + + for (i = 0; i < stage->nr_tmps; i++) + stage->tmp[i]->vertex_id = UNDEFINED_VERTEX_ID; + + stage = stage->next; + } + + draw_vertex_cache_reset_vertex_ids(draw); +} |