diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_sf.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_sf.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_sf.c b/src/mesa/drivers/dri/i965/brw_sf.c new file mode 100644 index 00000000000..d5175399d6c --- /dev/null +++ b/src/mesa/drivers/dri/i965/brw_sf.c @@ -0,0 +1,188 @@ +/* + 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 <[email protected]> + */ + + +#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_sf.h" +#include "brw_state.h" + +#define DO_SETUP_BITS ((1<<FRAG_ATTRIB_MAX)-1) + +static void compile_sf_prog( struct brw_context *brw, + struct brw_sf_prog_key *key ) +{ + struct brw_sf_compile c; + const GLuint *program; + GLuint program_size; + GLuint i, idx; + + memset(&c, 0, sizeof(c)); + + /* Begin the compilation: + */ + brw_init_compile(&c.func); + + c.key = *key; + c.nr_attrs = brw_count_bits(c.key.attrs); + c.nr_attr_regs = (c.nr_attrs+1)/2; + c.nr_setup_attrs = brw_count_bits(c.key.attrs & DO_SETUP_BITS); + c.nr_setup_regs = (c.nr_setup_attrs+1)/2; + + c.prog_data.urb_read_length = c.nr_attr_regs; + c.prog_data.urb_entry_size = c.nr_setup_regs * 2; + + /* Construct map from attribute number to position in the vertex. + */ + for (i = idx = 0; i < VERT_RESULT_MAX; i++) + if (c.key.attrs & (1<<i)) { + c.attr_to_idx[i] = idx; + c.idx_to_attr[idx] = i; + idx++; + } + + /* Which primitive? Or all three? + */ + switch (key->primitive) { + case SF_TRIANGLES: + c.nr_verts = 3; + brw_emit_tri_setup( &c ); + break; + case SF_LINES: + c.nr_verts = 2; + brw_emit_line_setup( &c ); + break; + case SF_POINTS: + c.nr_verts = 1; + brw_emit_point_setup( &c ); + break; + case SF_UNFILLED_TRIS: + c.nr_verts = 3; + brw_emit_anyprim_setup( &c ); + break; + default: + assert(0); + return; + } + + + /* get the program + */ + program = brw_get_program(&c.func, &program_size); + + /* Upload + */ + brw->sf.prog_gs_offset = brw_upload_cache( &brw->cache[BRW_SF_PROG], + &c.key, + sizeof(c.key), + program, + program_size, + &c.prog_data, + &brw->sf.prog_data ); +} + + +static GLboolean search_cache( struct brw_context *brw, + struct brw_sf_prog_key *key ) +{ + return brw_search_cache(&brw->cache[BRW_SF_PROG], + key, sizeof(*key), + &brw->sf.prog_data, + &brw->sf.prog_gs_offset); +} + + +/* Calculate interpolants for triangle and line rasterization. + */ +static void upload_sf_prog( struct brw_context *brw ) +{ + struct brw_sf_prog_key key; + + memset(&key, 0, sizeof(key)); + + /* Populate the key, noting state dependencies: + */ + /* CACHE_NEW_VS_PROG */ + key.attrs = brw->vs.prog_data->outputs_written; + + /* BRW_NEW_REDUCED_PRIMITIVE */ + switch (brw->intel.reduced_primitive) { + case GL_TRIANGLES: + /* NOTE: We just use the edgeflag attribute as an indicator that + * unfilled triangles are active. We don't actually do the + * edgeflag testing here, it is already done in the clip + * program. + */ + if (key.attrs & (1<<VERT_RESULT_EDGE)) + key.primitive = SF_UNFILLED_TRIS; + else + key.primitive = SF_TRIANGLES; + break; + case GL_LINES: + key.primitive = SF_LINES; + break; + case GL_POINTS: + key.primitive = SF_POINTS; + break; + } + + + /* _NEW_LIGHT */ + key.do_flat_shading = (brw->attribs.Light->ShadeModel == GL_FLAT); + key.do_twoside_color = (brw->attribs.Light->Enabled && brw->attribs.Light->Model.TwoSide); + + /* _NEW_POLYGON */ + if (key.do_twoside_color) + key.frontface_ccw = (brw->attribs.Polygon->FrontFace == GL_CCW); + + + if (!search_cache(brw, &key)) + compile_sf_prog( brw, &key ); +} + + +const struct brw_tracked_state brw_sf_prog = { + .dirty = { + .mesa = (_NEW_LIGHT|_NEW_POLYGON), + .brw = (BRW_NEW_REDUCED_PRIMITIVE), + .cache = CACHE_NEW_VS_PROG + }, + .update = upload_sf_prog +}; + |