diff options
Diffstat (limited to 'src/gallium/drivers/i965/brw_sf.c')
| -rw-r--r-- | src/gallium/drivers/i965/brw_sf.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_sf.c b/src/gallium/drivers/i965/brw_sf.c new file mode 100644 index 0000000000..e1986a9dbb --- /dev/null +++ b/src/gallium/drivers/i965/brw_sf.c @@ -0,0 +1,216 @@ +/* + 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 "pipe/p_state.h" + +#include "brw_batchbuffer.h" +#include "brw_defines.h" +#include "brw_context.h" +#include "brw_pipe_rast.h" +#include "brw_eu.h" +#include "brw_util.h" +#include "brw_sf.h" +#include "brw_state.h" + +static enum pipe_error compile_sf_prog( struct brw_context *brw, + struct brw_sf_prog_key *key, + struct brw_winsys_buffer **bo_out ) +{ + enum pipe_error ret; + struct brw_sf_compile c; + const GLuint *program; + GLuint program_size; + + memset(&c, 0, sizeof(c)); + + /* Begin the compilation: + */ + brw_init_compile(brw, &c.func); + + c.key = *key; + c.nr_attrs = c.key.nr_attrs; + c.nr_attr_regs = (c.nr_attrs+1)/2; + c.nr_setup_attrs = c.key.nr_attrs; + 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; + + /* Special case when there are no attributes to setup. + * + * XXX: should be able to set nr_setup_attrs to nr_attrs-1 -- but + * breaks vp-tris.c + */ + if (c.nr_attrs - 1 == 0) { + c.nr_verts = 0; + brw_emit_null_setup( &c ); + } + else { + /* Which primitive? Or all three? + */ + switch (key->primitive) { + case SF_TRIANGLES: + c.nr_verts = 3; + brw_emit_tri_setup( &c, GL_TRUE ); + break; + case SF_LINES: + c.nr_verts = 2; + brw_emit_line_setup( &c, GL_TRUE ); + break; + case SF_POINTS: + c.nr_verts = 1; + if (key->do_point_sprite) + brw_emit_point_sprite_setup( &c, GL_TRUE ); + else + brw_emit_point_setup( &c, GL_TRUE ); + break; + case SF_UNFILLED_TRIS: + c.nr_verts = 3; + brw_emit_anyprim_setup( &c ); + break; + default: + assert(0); + return PIPE_ERROR_BAD_INPUT; + } + } + + /* get the program + */ + ret = brw_get_program(&c.func, &program, &program_size); + if (ret) + return ret; + + /* Upload + */ + ret = brw_upload_cache( &brw->cache, BRW_SF_PROG, + &c.key, sizeof(c.key), + NULL, 0, + program, program_size, + &c.prog_data, + &brw->sf.prog_data, + bo_out); + if (ret) + return ret; + + return PIPE_OK; +} + +/* Calculate interpolants for triangle and line rasterization. + */ +static enum pipe_error upload_sf_prog(struct brw_context *brw) +{ + const struct brw_fs_signature *sig = &brw->curr.fragment_shader->signature; + struct brw_sf_prog_key key; + enum pipe_error ret; + unsigned i; + + memset(&key, 0, sizeof(key)); + + /* Populate the key, noting state dependencies: + */ + + /* XXX: Add one to account for the position input. + */ + /* PIPE_NEW_FRAGMENT_SIGNATURE */ + key.nr_attrs = sig->nr_inputs + 1; + + + /* XXX: why is position required to be linear? why do we care + * about it at all? + */ + key.linear_attrs = 1; /* position -- but why? */ + + for (i = 0; i < sig->nr_inputs; i++) { + switch (sig->input[i].interp) { + case TGSI_INTERPOLATE_CONSTANT: + break; + case TGSI_INTERPOLATE_LINEAR: + key.linear_attrs |= 1 << (i+1); + break; + case TGSI_INTERPOLATE_PERSPECTIVE: + key.persp_attrs |= 1 << (i+1); + break; + } + } + + /* BRW_NEW_REDUCED_PRIMITIVE */ + switch (brw->reduced_primitive) { + case PIPE_PRIM_TRIANGLES: + /* PIPE_NEW_RAST + */ + if (brw->curr.rast->templ.fill_cw != PIPE_POLYGON_MODE_FILL || + brw->curr.rast->templ.fill_ccw != PIPE_POLYGON_MODE_FILL) + key.primitive = SF_UNFILLED_TRIS; + else + key.primitive = SF_TRIANGLES; + break; + case PIPE_PRIM_LINES: + key.primitive = SF_LINES; + break; + case PIPE_PRIM_POINTS: + key.primitive = SF_POINTS; + break; + } + + key.do_point_sprite = brw->curr.rast->templ.point_sprite; + key.sprite_origin_lower_left = 0; /* XXX: ctx->Point.SpriteOrigin - fix rast state */ + key.do_flat_shading = brw->curr.rast->templ.flatshade; + key.do_twoside_color = brw->curr.rast->templ.light_twoside; + + if (key.do_twoside_color) { + key.frontface_ccw = (brw->curr.rast->templ.front_winding == + PIPE_WINDING_CCW); + } + + if (brw_search_cache(&brw->cache, BRW_SF_PROG, + &key, sizeof(key), + NULL, 0, + &brw->sf.prog_data, + &brw->sf.prog_bo)) + return PIPE_OK; + + ret = compile_sf_prog( brw, &key, &brw->sf.prog_bo ); + if (ret) + return ret; + + return PIPE_OK; +} + + +const struct brw_tracked_state brw_sf_prog = { + .dirty = { + .mesa = (PIPE_NEW_RAST | PIPE_NEW_FRAGMENT_SIGNATURE), + .brw = (BRW_NEW_REDUCED_PRIMITIVE), + .cache = 0 + }, + .prepare = upload_sf_prog +}; + |