/********************************************************** * Copyright 2008-2009 VMware, Inc. 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, sublicense, 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 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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * 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. * **********************************************************/ #ifndef SVGA_DRAW_H_ #define SVGA_DRAW_H_ #include "pipe/p_compiler.h" #include "pipe/p_defines.h" #include "indices/u_indices.h" #include "svga_hw_reg.h" #include "svga3d_shaderdefs.h" struct svga_context; struct u_upload_mgr; /** * Mask indicating which types of gallium primitives are actually * handled by the svga device. Other types will be converted to * these types by the index/translation code. */ static const unsigned svga_hw_prims = ((1 << PIPE_PRIM_POINTS) | (1 << PIPE_PRIM_LINES) | (1 << PIPE_PRIM_LINE_STRIP) | (1 << PIPE_PRIM_TRIANGLES) | (1 << PIPE_PRIM_TRIANGLE_STRIP) | (1 << PIPE_PRIM_TRIANGLE_FAN)); /** * Translate a gallium PIPE_PRIM_x value to an SVGA3D_PRIMITIVE_x value. * Also, compute the number of primitives that'll be drawn given a * vertex count. * Note that this function doesn't have to handle PIPE_PRIM_LINE_LOOP, * PIPE_PRIM_QUADS, PIPE_PRIM_QUAD_STRIP or PIPE_PRIM_POLYGON. We convert * those to other types of primitives with index/translation code. */ static inline unsigned svga_translate_prim(unsigned mode, unsigned vcount,unsigned *prim_count) { switch (mode) { case PIPE_PRIM_POINTS: *prim_count = vcount; return SVGA3D_PRIMITIVE_POINTLIST; case PIPE_PRIM_LINES: *prim_count = vcount / 2; return SVGA3D_PRIMITIVE_LINELIST; case PIPE_PRIM_LINE_STRIP: *prim_count = vcount - 1; return SVGA3D_PRIMITIVE_LINESTRIP; case PIPE_PRIM_TRIANGLES: *prim_count = vcount / 3; return SVGA3D_PRIMITIVE_TRIANGLELIST; case PIPE_PRIM_TRIANGLE_STRIP: *prim_count = vcount - 2; return SVGA3D_PRIMITIVE_TRIANGLESTRIP; case PIPE_PRIM_TRIANGLE_FAN: *prim_count = vcount - 2; return SVGA3D_PRIMITIVE_TRIANGLEFAN; default: assert(0); *prim_count = 0; return 0; } } struct index_cache { u_generate_func generate; unsigned gen_nr; /* If non-null, this buffer is filled by calling * generate(nr, map(buffer)) */ struct pipe_resource *buffer; }; /** Max number of primitives per draw call */ #define QSZ SVGA3D_MAX_DRAW_PRIMITIVE_RANGES struct draw_cmd { struct svga_winsys_context *swc; SVGA3dVertexDecl vdecl[SVGA3D_INPUTREG_MAX]; struct pipe_resource *vdecl_vb[SVGA3D_INPUTREG_MAX]; unsigned vdecl_count; SVGA3dPrimitiveRange prim[QSZ]; struct pipe_resource *prim_ib[QSZ]; unsigned prim_count; unsigned min_index[QSZ]; unsigned max_index[QSZ]; }; #define IDX_CACHE_MAX 8 struct svga_hwtnl { struct svga_context *svga; struct u_upload_mgr *upload_ib; /* Additional negative index bias due to partial buffer uploads * This is compensated for in the offset associated with all * vertex buffers. */ int index_bias; /* Flatshade information: */ unsigned api_pv; unsigned hw_pv; unsigned api_fillmode; /* Cache the results of running a particular generate func on each * primitive type. */ struct index_cache index_cache[PIPE_PRIM_MAX][IDX_CACHE_MAX]; /* Try to build the maximal draw command packet before emitting: */ struct draw_cmd cmd; }; /*********************************************************************** * Internal functions */ enum pipe_error svga_hwtnl_prim( struct svga_hwtnl *hwtnl, const SVGA3dPrimitiveRange *range, unsigned min_index, unsigned max_index, struct pipe_resource *ib ); enum pipe_error svga_hwtnl_simple_draw_range_elements( struct svga_hwtnl *hwtnl, struct pipe_resource *indexBuffer, unsigned index_size, int index_bias, unsigned min_index, unsigned max_index, unsigned prim, unsigned start, unsigned count ); #endif