| /* |
| Copyright (C) Intel Corp. 2006. All Rights Reserved. |
| Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to |
| develop this 3D driver. |
| |
| 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 (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 NONINFRINGEMENT. |
| IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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 "glheader.h" |
| #include "macros.h" |
| #include "enums.h" |
| |
| #include "intel_batchbuffer.h" |
| |
| #include "brw_defines.h" |
| #include "brw_context.h" |
| #include "brw_eu.h" |
| #include "brw_util.h" |
| #include "brw_state.h" |
| #include "brw_gs.h" |
| |
| |
| |
| static void compile_gs_prog( struct brw_context *brw, |
| struct brw_gs_prog_key *key ) |
| { |
| struct brw_gs_compile c; |
| const GLuint *program; |
| GLuint program_size; |
| |
| memset(&c, 0, sizeof(c)); |
| |
| c.key = *key; |
| |
| /* Need to locate the two positions present in vertex + header. |
| * These are currently hardcoded: |
| */ |
| c.nr_attrs = brw_count_bits(c.key.attrs); |
| c.nr_regs = (c.nr_attrs + 1) / 2 + 1; /* are vertices packed, or reg-aligned? */ |
| c.nr_bytes = c.nr_regs * REG_SIZE; |
| |
| |
| /* Begin the compilation: |
| */ |
| brw_init_compile(brw, &c.func); |
| |
| c.func.single_program_flow = 1; |
| |
| /* For some reason the thread is spawned with only 4 channels |
| * unmasked. |
| */ |
| brw_set_mask_control(&c.func, BRW_MASK_DISABLE); |
| |
| |
| /* Note that primitives which don't require a GS program have |
| * already been weeded out by this stage: |
| */ |
| switch (key->primitive) { |
| case GL_QUADS: |
| brw_gs_quads( &c ); |
| break; |
| case GL_QUAD_STRIP: |
| brw_gs_quad_strip( &c ); |
| break; |
| case GL_LINE_LOOP: |
| brw_gs_lines( &c ); |
| break; |
| case GL_LINES: |
| if (key->hint_gs_always) |
| brw_gs_lines( &c ); |
| else { |
| return; |
| } |
| break; |
| case GL_TRIANGLES: |
| if (key->hint_gs_always) |
| brw_gs_tris( &c ); |
| else { |
| return; |
| } |
| break; |
| case GL_POINTS: |
| if (key->hint_gs_always) |
| brw_gs_points( &c ); |
| else { |
| return; |
| } |
| break; |
| default: |
| return; |
| } |
| |
| /* get the program |
| */ |
| program = brw_get_program(&c.func, &program_size); |
| |
| /* Upload |
| */ |
| dri_bo_unreference(brw->gs.prog_bo); |
| brw->gs.prog_bo = brw_upload_cache( &brw->cache, BRW_GS_PROG, |
| &c.key, sizeof(c.key), |
| NULL, 0, |
| program, program_size, |
| &c.prog_data, |
| &brw->gs.prog_data ); |
| } |
| |
| static const GLenum gs_prim[GL_POLYGON+1] = { |
| GL_POINTS, |
| GL_LINES, |
| GL_LINE_LOOP, |
| GL_LINES, |
| GL_TRIANGLES, |
| GL_TRIANGLES, |
| GL_TRIANGLES, |
| GL_QUADS, |
| GL_QUAD_STRIP, |
| GL_TRIANGLES |
| }; |
| |
| static void populate_key( struct brw_context *brw, |
| struct brw_gs_prog_key *key ) |
| { |
| memset(key, 0, sizeof(*key)); |
| |
| /* CACHE_NEW_VS_PROG */ |
| key->attrs = brw->vs.prog_data->outputs_written; |
| |
| /* BRW_NEW_PRIMITIVE */ |
| key->primitive = gs_prim[brw->primitive]; |
| |
| key->hint_gs_always = 0; /* debug code? */ |
| |
| key->need_gs_prog = (key->hint_gs_always || |
| brw->primitive == GL_QUADS || |
| brw->primitive == GL_QUAD_STRIP || |
| brw->primitive == GL_LINE_LOOP); |
| } |
| |
| /* Calculate interpolants for triangle and line rasterization. |
| */ |
| static int prepare_gs_prog( struct brw_context *brw ) |
| { |
| struct brw_gs_prog_key key; |
| int ret = 0; |
| /* Populate the key: |
| */ |
| populate_key(brw, &key); |
| |
| if (brw->gs.prog_active != key.need_gs_prog) { |
| brw->state.dirty.cache |= CACHE_NEW_GS_PROG; |
| brw->gs.prog_active = key.need_gs_prog; |
| } |
| |
| if (brw->gs.prog_active) { |
| dri_bo_unreference(brw->gs.prog_bo); |
| brw->gs.prog_bo = brw_search_cache(&brw->cache, BRW_GS_PROG, |
| &key, sizeof(key), |
| NULL, 0, |
| &brw->gs.prog_data); |
| if (brw->gs.prog_bo == NULL) |
| compile_gs_prog( brw, &key ); |
| |
| ret |= dri_bufmgr_check_aperture_space(brw->gs.prog_bo); |
| } |
| |
| return ret; |
| } |
| |
| |
| const struct brw_tracked_state brw_gs_prog = { |
| .dirty = { |
| .mesa = 0, |
| .brw = BRW_NEW_PRIMITIVE, |
| .cache = CACHE_NEW_VS_PROG |
| }, |
| .prepare = prepare_gs_prog |
| }; |