diff options
Diffstat (limited to 'src/gallium/drivers/i965/brw_gs.c')
| -rw-r--r-- | src/gallium/drivers/i965/brw_gs.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_gs.c b/src/gallium/drivers/i965/brw_gs.c new file mode 100644 index 00000000000..921b201bae2 --- /dev/null +++ b/src/gallium/drivers/i965/brw_gs.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 "brw_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 enum pipe_error compile_gs_prog( struct brw_context *brw, + struct brw_gs_prog_key *key, + struct brw_winsys_buffer **bo_out ) +{ + struct brw_gs_compile c; + enum pipe_error ret; + const GLuint *program; + GLuint program_size; + + memset(&c, 0, sizeof(c)); + + c.key = *key; + c.need_ff_sync = BRW_IS_IGDNG(brw); + /* Need to locate the two positions present in vertex + header. + * These are currently hardcoded: + */ + c.nr_attrs = c.key.nr_attrs; + + if (BRW_IS_IGDNG(brw)) + c.nr_regs = (c.nr_attrs + 1) / 2 + 3; /* are vertices packed, or reg-aligned? */ + else + 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 PIPE_PRIM_QUADS: + brw_gs_quads( &c ); + break; + case PIPE_PRIM_QUAD_STRIP: + brw_gs_quad_strip( &c ); + break; + case PIPE_PRIM_LINE_LOOP: + brw_gs_lines( &c ); + break; + case PIPE_PRIM_LINES: + if (key->hint_gs_always) + brw_gs_lines( &c ); + else { + return PIPE_OK; + } + break; + case PIPE_PRIM_TRIANGLES: + if (key->hint_gs_always) + brw_gs_tris( &c ); + else { + return PIPE_OK; + } + break; + case PIPE_PRIM_POINTS: + if (key->hint_gs_always) + brw_gs_points( &c ); + else { + return PIPE_OK; + } + 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_GS_PROG, + &c.key, sizeof(c.key), + NULL, 0, + program, program_size, + &c.prog_data, + &brw->gs.prog_data, + bo_out ); + if (ret) + return ret; + + return PIPE_OK; +} + +static const unsigned gs_prim[PIPE_PRIM_MAX] = { + PIPE_PRIM_POINTS, + PIPE_PRIM_LINES, + PIPE_PRIM_LINE_LOOP, + PIPE_PRIM_LINES, + PIPE_PRIM_TRIANGLES, + PIPE_PRIM_TRIANGLES, + PIPE_PRIM_TRIANGLES, + PIPE_PRIM_QUADS, + PIPE_PRIM_QUAD_STRIP, + PIPE_PRIM_TRIANGLES +}; + +static void populate_key( struct brw_context *brw, + struct brw_gs_prog_key *key ) +{ + const struct brw_fs_signature *sig = &brw->curr.fragment_shader->signature; + + memset(key, 0, sizeof(*key)); + + /* PIPE_NEW_FRAGMENT_SIGNATURE */ + key->nr_attrs = sig->nr_inputs + 1; + + /* 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 == PIPE_PRIM_QUADS || + brw->primitive == PIPE_PRIM_QUAD_STRIP || + brw->primitive == PIPE_PRIM_LINE_LOOP); +} + +/* Calculate interpolants for triangle and line rasterization. + */ +static int prepare_gs_prog(struct brw_context *brw) +{ + struct brw_gs_prog_key key; + enum pipe_error ret; + + /* 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) + return PIPE_OK; + + if (brw_search_cache(&brw->cache, BRW_GS_PROG, + &key, sizeof(key), + NULL, 0, + &brw->gs.prog_data, + &brw->gs.prog_bo)) + return PIPE_OK; + + ret = compile_gs_prog( brw, &key, &brw->gs.prog_bo ); + if (ret) + return ret; + + return PIPE_OK; +} + + +const struct brw_tracked_state brw_gs_prog = { + .dirty = { + .mesa = PIPE_NEW_FRAGMENT_SIGNATURE, + .brw = BRW_NEW_PRIMITIVE, + .cache = 0, + }, + .prepare = prepare_gs_prog +}; |