diff options
Diffstat (limited to 'src/mesa/pipe/i965simple/brw_clip_unfilled.c')
| -rw-r--r-- | src/mesa/pipe/i965simple/brw_clip_unfilled.c | 477 |
1 files changed, 0 insertions, 477 deletions
diff --git a/src/mesa/pipe/i965simple/brw_clip_unfilled.c b/src/mesa/pipe/i965simple/brw_clip_unfilled.c deleted file mode 100644 index b774a76dd63..00000000000 --- a/src/mesa/pipe/i965simple/brw_clip_unfilled.c +++ /dev/null @@ -1,477 +0,0 @@ -/* - 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 "brw_defines.h" -#include "brw_context.h" -#include "brw_eu.h" -#include "brw_util.h" -#include "brw_clip.h" - - - -/* This is performed against the original triangles, so no indirection - * required: -BZZZT! - */ -static void compute_tri_direction( struct brw_clip_compile *c ) -{ - struct brw_compile *p = &c->func; - struct brw_reg e = c->reg.tmp0; - struct brw_reg f = c->reg.tmp1; - struct brw_reg v0 = byte_offset(c->reg.vertex[0], c->offset[VERT_RESULT_HPOS]); - struct brw_reg v1 = byte_offset(c->reg.vertex[1], c->offset[VERT_RESULT_HPOS]); - struct brw_reg v2 = byte_offset(c->reg.vertex[2], c->offset[VERT_RESULT_HPOS]); - - - /* Calculate the vectors of two edges of the triangle: - */ - brw_ADD(p, e, v0, negate(v2)); - brw_ADD(p, f, v1, negate(v2)); - - /* Take their crossproduct: - */ - brw_set_access_mode(p, BRW_ALIGN_16); - brw_MUL(p, vec4(brw_null_reg()), brw_swizzle(e, 1,2,0,3), brw_swizzle(f,2,0,1,3)); - brw_MAC(p, vec4(e), negate(brw_swizzle(e, 2,0,1,3)), brw_swizzle(f,1,2,0,3)); - brw_set_access_mode(p, BRW_ALIGN_1); - - brw_MUL(p, c->reg.dir, c->reg.dir, vec4(e)); -} - - -static void cull_direction( struct brw_clip_compile *c ) -{ - struct brw_compile *p = &c->func; - struct brw_instruction *ccw; - unsigned conditional; - - assert (!(c->key.fill_ccw == CLIP_CULL && - c->key.fill_cw == CLIP_CULL)); - - if (c->key.fill_ccw == CLIP_CULL) - conditional = BRW_CONDITIONAL_GE; - else - conditional = BRW_CONDITIONAL_L; - - brw_CMP(p, - vec1(brw_null_reg()), - conditional, - get_element(c->reg.dir, 2), - brw_imm_f(0)); - - ccw = brw_IF(p, BRW_EXECUTE_1); - { - brw_clip_kill_thread(c); - } - brw_ENDIF(p, ccw); -} - - - -static void copy_bfc( struct brw_clip_compile *c ) -{ - struct brw_compile *p = &c->func; - struct brw_instruction *ccw; - unsigned conditional; - - /* Do we have any colors to copy? - */ - if (!(c->offset[VERT_RESULT_COL0] && c->offset[VERT_RESULT_BFC0]) && - !(c->offset[VERT_RESULT_COL1] && c->offset[VERT_RESULT_BFC1])) - return; - - /* In some wierd degnerate cases we can end up testing the - * direction twice, once for culling and once for bfc copying. Oh - * well, that's what you get for setting wierd GL state. - */ - if (c->key.copy_bfc_ccw) - conditional = BRW_CONDITIONAL_GE; - else - conditional = BRW_CONDITIONAL_L; - - brw_CMP(p, - vec1(brw_null_reg()), - conditional, - get_element(c->reg.dir, 2), - brw_imm_f(0)); - - ccw = brw_IF(p, BRW_EXECUTE_1); - { - unsigned i; - - for (i = 0; i < 3; i++) { - if (c->offset[VERT_RESULT_COL0] && c->offset[VERT_RESULT_BFC0]) - brw_MOV(p, - byte_offset(c->reg.vertex[i], c->offset[VERT_RESULT_COL0]), - byte_offset(c->reg.vertex[i], c->offset[VERT_RESULT_BFC0])); - - if (c->offset[VERT_RESULT_COL1] && c->offset[VERT_RESULT_BFC1]) - brw_MOV(p, - byte_offset(c->reg.vertex[i], c->offset[VERT_RESULT_COL1]), - byte_offset(c->reg.vertex[i], c->offset[VERT_RESULT_BFC1])); - } - } - brw_ENDIF(p, ccw); -} - - - - -/* - float iz = 1.0 / dir.z; - float ac = dir.x * iz; - float bc = dir.y * iz; - offset = ctx->Polygon.OffsetUnits * DEPTH_SCALE; - offset += MAX2( abs(ac), abs(bc) ) * ctx->Polygon.OffsetFactor; - offset *= MRD; -*/ -static void compute_offset( struct brw_clip_compile *c ) -{ - struct brw_compile *p = &c->func; - struct brw_reg off = c->reg.offset; - struct brw_reg dir = c->reg.dir; - - brw_math_invert(p, get_element(off, 2), get_element(dir, 2)); - brw_MUL(p, vec2(off), dir, get_element(off, 2)); - - brw_CMP(p, - vec1(brw_null_reg()), - BRW_CONDITIONAL_GE, - brw_abs(get_element(off, 0)), - brw_abs(get_element(off, 1))); - - brw_SEL(p, vec1(off), brw_abs(get_element(off, 0)), brw_abs(get_element(off, 1))); - brw_set_predicate_control(p, BRW_PREDICATE_NONE); - - brw_MUL(p, vec1(off), off, brw_imm_f(c->key.offset_factor)); - brw_ADD(p, vec1(off), off, brw_imm_f(c->key.offset_units)); -} - - -static void merge_edgeflags( struct brw_clip_compile *c ) -{ - struct brw_compile *p = &c->func; - struct brw_instruction *is_poly; - struct brw_reg tmp0 = get_element_ud(c->reg.tmp0, 0); - - brw_AND(p, tmp0, get_element_ud(c->reg.R0, 2), brw_imm_ud(PRIM_MASK)); - brw_CMP(p, - vec1(brw_null_reg()), - BRW_CONDITIONAL_EQ, - tmp0, - brw_imm_ud(_3DPRIM_POLYGON)); - - /* Get away with using reg.vertex because we know that this is not - * a _3DPRIM_TRISTRIP_REVERSE: - */ - is_poly = brw_IF(p, BRW_EXECUTE_1); - { - brw_set_conditionalmod(p, BRW_CONDITIONAL_EQ); - brw_AND(p, vec1(brw_null_reg()), get_element_ud(c->reg.R0, 2), brw_imm_ud(1<<8)); - brw_MOV(p, byte_offset(c->reg.vertex[0], c->offset[VERT_RESULT_EDGE]), brw_imm_f(0)); - brw_set_predicate_control(p, BRW_PREDICATE_NONE); - - brw_set_conditionalmod(p, BRW_CONDITIONAL_EQ); - brw_AND(p, vec1(brw_null_reg()), get_element_ud(c->reg.R0, 2), brw_imm_ud(1<<9)); - brw_MOV(p, byte_offset(c->reg.vertex[2], c->offset[VERT_RESULT_EDGE]), brw_imm_f(0)); - brw_set_predicate_control(p, BRW_PREDICATE_NONE); - } - brw_ENDIF(p, is_poly); -} - - - -static void apply_one_offset( struct brw_clip_compile *c, - struct brw_indirect vert ) -{ - struct brw_compile *p = &c->func; - struct brw_reg pos = deref_4f(vert, c->offset[VERT_RESULT_HPOS]); - struct brw_reg z = get_element(pos, 2); - - brw_ADD(p, z, z, vec1(c->reg.offset)); -} - - - -/*********************************************************************** - * Output clipped polygon as an unfilled primitive: - */ -static void emit_lines(struct brw_clip_compile *c, - boolean do_offset) -{ - struct brw_compile *p = &c->func; - struct brw_instruction *loop; - struct brw_instruction *draw_edge; - struct brw_indirect v0 = brw_indirect(0, 0); - struct brw_indirect v1 = brw_indirect(1, 0); - struct brw_indirect v0ptr = brw_indirect(2, 0); - struct brw_indirect v1ptr = brw_indirect(3, 0); - - /* Need a seperate loop for offset: - */ - if (do_offset) { - brw_MOV(p, c->reg.loopcount, c->reg.nr_verts); - brw_MOV(p, get_addr_reg(v0ptr), brw_address(c->reg.inlist)); - - loop = brw_DO(p, BRW_EXECUTE_1); - { - brw_MOV(p, get_addr_reg(v0), deref_1uw(v0ptr, 0)); - brw_ADD(p, get_addr_reg(v0ptr), get_addr_reg(v0ptr), brw_imm_uw(2)); - - apply_one_offset(c, v0); - - brw_set_conditionalmod(p, BRW_CONDITIONAL_G); - brw_ADD(p, c->reg.loopcount, c->reg.loopcount, brw_imm_d(-1)); - } - brw_WHILE(p, loop); - } - - /* v1ptr = &inlist[nr_verts] - * *v1ptr = v0 - */ - brw_MOV(p, c->reg.loopcount, c->reg.nr_verts); - brw_MOV(p, get_addr_reg(v0ptr), brw_address(c->reg.inlist)); - brw_ADD(p, get_addr_reg(v1ptr), get_addr_reg(v0ptr), retype(c->reg.nr_verts, BRW_REGISTER_TYPE_UW)); - brw_ADD(p, get_addr_reg(v1ptr), get_addr_reg(v1ptr), retype(c->reg.nr_verts, BRW_REGISTER_TYPE_UW)); - brw_MOV(p, deref_1uw(v1ptr, 0), deref_1uw(v0ptr, 0)); - - loop = brw_DO(p, BRW_EXECUTE_1); - { - brw_MOV(p, get_addr_reg(v0), deref_1uw(v0ptr, 0)); - brw_MOV(p, get_addr_reg(v1), deref_1uw(v0ptr, 2)); - brw_ADD(p, get_addr_reg(v0ptr), get_addr_reg(v0ptr), brw_imm_uw(2)); - - /* draw edge if edgeflag != 0 */ - brw_CMP(p, - vec1(brw_null_reg()), BRW_CONDITIONAL_NZ, - deref_1f(v0, c->offset[VERT_RESULT_EDGE]), - brw_imm_f(0)); - draw_edge = brw_IF(p, BRW_EXECUTE_1); - { - brw_clip_emit_vue(c, v0, 1, 0, (_3DPRIM_LINESTRIP << 2) | R02_PRIM_START); - brw_clip_emit_vue(c, v1, 1, 0, (_3DPRIM_LINESTRIP << 2) | R02_PRIM_END); - } - brw_ENDIF(p, draw_edge); - - brw_set_conditionalmod(p, BRW_CONDITIONAL_NZ); - brw_ADD(p, c->reg.loopcount, c->reg.loopcount, brw_imm_d(-1)); - } - brw_WHILE(p, loop); -} - - - -static void emit_points(struct brw_clip_compile *c, - boolean do_offset ) -{ - struct brw_compile *p = &c->func; - struct brw_instruction *loop; - struct brw_instruction *draw_point; - - struct brw_indirect v0 = brw_indirect(0, 0); - struct brw_indirect v0ptr = brw_indirect(2, 0); - - brw_MOV(p, c->reg.loopcount, c->reg.nr_verts); - brw_MOV(p, get_addr_reg(v0ptr), brw_address(c->reg.inlist)); - - loop = brw_DO(p, BRW_EXECUTE_1); - { - brw_MOV(p, get_addr_reg(v0), deref_1uw(v0ptr, 0)); - brw_ADD(p, get_addr_reg(v0ptr), get_addr_reg(v0ptr), brw_imm_uw(2)); - - /* draw if edgeflag != 0 - */ - brw_CMP(p, - vec1(brw_null_reg()), BRW_CONDITIONAL_NZ, - deref_1f(v0, c->offset[VERT_RESULT_EDGE]), - brw_imm_f(0)); - draw_point = brw_IF(p, BRW_EXECUTE_1); - { - if (do_offset) - apply_one_offset(c, v0); - - brw_clip_emit_vue(c, v0, 1, 0, (_3DPRIM_POINTLIST << 2) | R02_PRIM_START | R02_PRIM_END); - } - brw_ENDIF(p, draw_point); - - brw_set_conditionalmod(p, BRW_CONDITIONAL_NZ); - brw_ADD(p, c->reg.loopcount, c->reg.loopcount, brw_imm_d(-1)); - } - brw_WHILE(p, loop); -} - - - - - - - -static void emit_primitives( struct brw_clip_compile *c, - unsigned mode, - boolean do_offset ) -{ - switch (mode) { - case CLIP_FILL: - brw_clip_tri_emit_polygon(c); - break; - - case CLIP_LINE: - emit_lines(c, do_offset); - break; - - case CLIP_POINT: - emit_points(c, do_offset); - break; - - case CLIP_CULL: - assert(0); - break; - } -} - - - -static void emit_unfilled_primitives( struct brw_clip_compile *c ) -{ - struct brw_compile *p = &c->func; - struct brw_instruction *ccw; - - /* Direction culling has already been done. - */ - if (c->key.fill_ccw != c->key.fill_cw && - c->key.fill_ccw != CLIP_CULL && - c->key.fill_cw != CLIP_CULL) - { - brw_CMP(p, - vec1(brw_null_reg()), - BRW_CONDITIONAL_GE, - get_element(c->reg.dir, 2), - brw_imm_f(0)); - - ccw = brw_IF(p, BRW_EXECUTE_1); - { - emit_primitives(c, c->key.fill_ccw, c->key.offset_ccw); - } - ccw = brw_ELSE(p, ccw); - { - emit_primitives(c, c->key.fill_cw, c->key.offset_cw); - } - brw_ENDIF(p, ccw); - } - else if (c->key.fill_cw != CLIP_CULL) { - emit_primitives(c, c->key.fill_cw, c->key.offset_cw); - } - else if (c->key.fill_ccw != CLIP_CULL) { - emit_primitives(c, c->key.fill_ccw, c->key.offset_ccw); - } -} - - - - -static void check_nr_verts( struct brw_clip_compile *c ) -{ - struct brw_compile *p = &c->func; - struct brw_instruction *if_insn; - - brw_CMP(p, vec1(brw_null_reg()), BRW_CONDITIONAL_L, c->reg.nr_verts, brw_imm_d(3)); - if_insn = brw_IF(p, BRW_EXECUTE_1); - { - brw_clip_kill_thread(c); - } - brw_ENDIF(p, if_insn); -} - - -void brw_emit_unfilled_clip( struct brw_clip_compile *c ) -{ - struct brw_compile *p = &c->func; - struct brw_instruction *do_clip; - - - c->need_direction = ((c->key.offset_ccw || c->key.offset_cw) || - (c->key.fill_ccw != c->key.fill_cw) || - c->key.fill_ccw == CLIP_CULL || - c->key.fill_cw == CLIP_CULL || - c->key.copy_bfc_cw || - c->key.copy_bfc_ccw); - - brw_clip_tri_alloc_regs(c, 3 + c->key.nr_userclip + 6); - brw_clip_tri_init_vertices(c); - - assert(c->offset[VERT_RESULT_EDGE]); - - if (c->key.fill_ccw == CLIP_CULL && - c->key.fill_cw == CLIP_CULL) { - brw_clip_kill_thread(c); - return; - } - - merge_edgeflags(c); - - /* Need to use the inlist indirection here: - */ - if (c->need_direction) - compute_tri_direction(c); - - if (c->key.fill_ccw == CLIP_CULL || - c->key.fill_cw == CLIP_CULL) - cull_direction(c); - - if (c->key.offset_ccw || - c->key.offset_cw) - compute_offset(c); - - if (c->key.copy_bfc_ccw || - c->key.copy_bfc_cw) - copy_bfc(c); - - /* Need to do this whether we clip or not: - */ - if (c->key.do_flat_shading) - brw_clip_tri_flat_shade(c); - - brw_clip_init_clipmask(c); - brw_CMP(p, vec1(brw_null_reg()), BRW_CONDITIONAL_NZ, c->reg.planemask, brw_imm_ud(0)); - do_clip = brw_IF(p, BRW_EXECUTE_1); - { - brw_clip_init_planes(c); - brw_clip_tri(c); - check_nr_verts(c); - } - brw_ENDIF(p, do_clip); - - emit_unfilled_primitives(c); - brw_clip_kill_thread(c); -} - - - |