/************************************************************************** * * 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 */ #include "pipe/p_util.h" #include "draw_context.h" #include "draw_private.h" #include "draw_vbuf.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_line = draw_wide_line_stage( draw ); draw->pipeline.wide_point = draw_wide_point_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->vs.queue) * size, 16); for (i = 0; i < Elements(draw->vs.queue); i++) draw->vs.queue[i].vertex = (struct vertex_header *)(tmp + i * size); } draw->shader_queue_flush = draw_vertex_shader_queue_flush; /* these defaults are oriented toward the needs of softpipe */ draw->wide_point_threshold = 1000000.0; /* infinity */ draw->wide_line_threshold = 1.0; draw->line_stipple = 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_line->destroy( draw->pipeline.wide_line ); draw->pipeline.wide_point->destroy( draw->pipeline.wide_point ); 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.aaline) draw->pipeline.aaline->destroy( draw->pipeline.aaline ); if (draw->pipeline.aapoint) draw->pipeline.aapoint->destroy( draw->pipeline.aapoint ); if (draw->pipeline.rasterize) draw->pipeline.rasterize->destroy( draw->pipeline.rasterize ); tgsi_exec_machine_free_data(&draw->machine); align_free( draw->vs.queue[0].vertex ); /* Frees all the vertices. */ /* Not so fast -- we're just borrowing this at the moment. * if (draw->render) draw->render->destroy( draw->render ); */ 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 to draw points with triangles if their size * is greater than this threshold. */ void draw_wide_point_threshold(struct draw_context *draw, float threshold) { draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); draw->wide_point_threshold = threshold; } /** * Tells the draw module to draw lines with triangles if their width * is greater than this threshold. */ void draw_wide_line_threshold(struct draw_context *draw, float threshold) { draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); draw->wide_line_threshold = threshold; } /** * Tells the draw module whether or not to implement line stipple. */ void draw_enable_line_stipple(struct draw_context *draw, boolean enable) { draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); draw->line_stipple = enable; } /** * Ask the draw module for the location/slot of the given vertex attribute in * a post-transformed vertex. * * With this function, drivers that use the draw module should have no reason * to track the current vertex shader. * * Note that the draw module may sometimes generate vertices with extra * attributes (such as texcoords for AA lines). The driver can call this * function to find those attributes. * * Zero is returned if the attribute is not found since this is * a don't care / undefined situtation. Returning -1 would be a bit more * work for the drivers. */ int draw_find_vs_output(struct draw_context *draw, uint semantic_name, uint semantic_index) { const struct draw_vertex_shader *vs = draw->vertex_shader; uint i; for (i = 0; i < vs->info.num_outputs; i++) { if (vs->info.output_semantic_name[i] == semantic_name && vs->info.output_semantic_index[i] == semantic_index) return i; } /* XXX there may be more than one extra vertex attrib. * For example, simulated gl_FragCoord and gl_PointCoord. */ if (draw->extra_vp_outputs.semantic_name == semantic_name && draw->extra_vp_outputs.semantic_index == semantic_index) { return draw->extra_vp_outputs.slot; } return 0; } /** * Return number of vertex shader outputs. */ uint draw_num_vs_outputs(struct draw_context *draw) { uint count = draw->vertex_shader->info.num_outputs; if (draw->extra_vp_outputs.slot >= 0) count++; return count; } /** * 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); } void draw_set_render( struct draw_context *draw, struct vbuf_render *render ) { draw->render = render; }