#include "main/glheader.h"
#include "main/macros.h"
#include "main/enums.h"
-#include "shader/program.h"
+#include "program/program.h"
#include "intel_batchbuffer.h"
#include "brw_defines.h"
#include "brw_context.h"
#include "brw_eu.h"
-#include "brw_util.h"
#include "brw_clip.h"
static void brw_clip_line_alloc_regs( struct brw_clip_compile *c )
{
- struct intel_context *intel = &c->func.brw->intel;
+ struct brw_context *brw = c->func.brw;
GLuint i = 0,j;
/* Register usage is static, precompute here:
i++;
}
- if (intel->needs_ff_sync) {
+ c->reg.vertex_src_mask = retype(brw_vec1_grf(i, 0), BRW_REGISTER_TYPE_UD);
+ c->reg.clipdistance_offset = retype(brw_vec1_grf(i, 1), BRW_REGISTER_TYPE_W);
+ i++;
+
+ if (brw->gen == 5) {
c->reg.ff_sync = retype(brw_vec1_grf(i, 0), BRW_REGISTER_TYPE_UD);
i++;
}
}
-
/* Line clipping, more or less following the following algorithm:
*
* for (p=0;p<MAX_PLANES;p++) {
struct brw_indirect newvtx0 = brw_indirect(2, 0);
struct brw_indirect newvtx1 = brw_indirect(3, 0);
struct brw_indirect plane_ptr = brw_indirect(4, 0);
- struct brw_instruction *plane_loop;
- struct brw_instruction *plane_active;
- struct brw_instruction *is_negative;
- struct brw_instruction *is_neg2 = NULL;
- struct brw_instruction *not_culled;
struct brw_reg v1_null_ud = retype(vec1(brw_null_reg()), BRW_REGISTER_TYPE_UD);
+ GLuint hpos_offset = brw_varying_to_offset(&c->vue_map, VARYING_SLOT_POS);
+ GLint clipdist0_offset = c->key.nr_userclip
+ ? brw_varying_to_offset(&c->vue_map, VARYING_SLOT_CLIP_DIST0)
+ : 0;
brw_MOV(p, get_addr_reg(vtx0), brw_address(c->reg.vertex[0]));
brw_MOV(p, get_addr_reg(vtx1), brw_address(c->reg.vertex[1]));
brw_set_predicate_control(p, BRW_PREDICATE_NONE);
- plane_loop = brw_DO(p, BRW_EXECUTE_1);
+ /* Set the initial vertex source mask: The first 6 planes are the bounds
+ * of the view volume; the next 8 planes are the user clipping planes.
+ */
+ brw_MOV(p, c->reg.vertex_src_mask, brw_imm_ud(0x3fc0));
+
+ /* Set the initial clipdistance offset to be 6 floats before gl_ClipDistance[0].
+ * We'll increment 6 times before we start hitting actual user clipping. */
+ brw_MOV(p, c->reg.clipdistance_offset, brw_imm_d(clipdist0_offset - 6*sizeof(float)));
+
+ brw_DO(p, BRW_EXECUTE_1);
{
/* if (planemask & 1)
*/
brw_set_conditionalmod(p, BRW_CONDITIONAL_NZ);
brw_AND(p, v1_null_ud, c->reg.planemask, brw_imm_ud(1));
-
- plane_active = brw_IF(p, BRW_EXECUTE_1);
+
+ brw_IF(p, BRW_EXECUTE_1);
{
- if (c->key.nr_userclip)
- brw_MOV(p, c->reg.plane_equation, deref_4f(plane_ptr, 0));
- else
- brw_MOV(p, c->reg.plane_equation, deref_4b(plane_ptr, 0));
-
- /* dp = DP4(vtx->position, plane)
- */
- brw_DP4(p, vec4(c->reg.dp0), deref_4f(vtx0, c->offset[VERT_RESULT_HPOS]), c->reg.plane_equation);
-
- /* if (IS_NEGATIVE(dp1))
- */
- brw_set_conditionalmod(p, BRW_CONDITIONAL_L);
- brw_DP4(p, vec4(c->reg.dp1), deref_4f(vtx1, c->offset[VERT_RESULT_HPOS]), c->reg.plane_equation);
- is_negative = brw_IF(p, BRW_EXECUTE_1);
- {
+ brw_set_conditionalmod(p, BRW_CONDITIONAL_NZ);
+ brw_AND(p, v1_null_ud, c->reg.vertex_src_mask, brw_imm_ud(1));
+ brw_IF(p, BRW_EXECUTE_1);
+ {
+ /* user clip distance: just fetch the correct float from each vertex */
+ struct brw_indirect temp_ptr = brw_indirect(7, 0);
+ brw_ADD(p, get_addr_reg(temp_ptr), get_addr_reg(vtx0), c->reg.clipdistance_offset);
+ brw_MOV(p, c->reg.dp0, deref_1f(temp_ptr, 0));
+ brw_ADD(p, get_addr_reg(temp_ptr), get_addr_reg(vtx1), c->reg.clipdistance_offset);
+ brw_MOV(p, c->reg.dp1, deref_1f(temp_ptr, 0));
+ }
+ brw_ELSE(p);
+ {
+ /* fixed plane: fetch the hpos, dp4 against the plane. */
+ if (c->key.nr_userclip)
+ brw_MOV(p, c->reg.plane_equation, deref_4f(plane_ptr, 0));
+ else
+ brw_MOV(p, c->reg.plane_equation, deref_4b(plane_ptr, 0));
+
+ brw_DP4(p, vec4(c->reg.dp0), deref_4f(vtx0, hpos_offset), c->reg.plane_equation);
+ brw_DP4(p, vec4(c->reg.dp1), deref_4f(vtx1, hpos_offset), c->reg.plane_equation);
+ }
+ brw_ENDIF(p);
+
+ brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_L, vec1(c->reg.dp1), brw_imm_f(0.0f));
+
+ brw_IF(p, BRW_EXECUTE_1);
+ {
/*
* Both can be negative on GM965/G965 due to RHW workaround
* if so, this object should be rejected.
*/
if (brw->has_negative_rhw_bug) {
brw_CMP(p, vec1(brw_null_reg()), BRW_CONDITIONAL_LE, c->reg.dp0, brw_imm_f(0.0));
- is_neg2 = brw_IF(p, BRW_EXECUTE_1);
+ brw_IF(p, BRW_EXECUTE_1);
{
brw_clip_kill_thread(c);
}
- brw_ENDIF(p, is_neg2);
+ brw_ENDIF(p);
}
brw_ADD(p, c->reg.t, c->reg.dp1, negate(c->reg.dp0));
brw_MOV(p, c->reg.t1, c->reg.t);
brw_set_predicate_control(p, BRW_PREDICATE_NONE);
}
- is_negative = brw_ELSE(p, is_negative);
+ brw_ELSE(p);
{
/* Coming back in. We know that both cannot be negative
* because the line would have been culled in that case.
/* Only on GM965/G965 */
if (brw->has_negative_rhw_bug) {
brw_CMP(p, vec1(brw_null_reg()), BRW_CONDITIONAL_L, c->reg.dp0, brw_imm_f(0.0));
- is_neg2 = brw_IF(p, BRW_EXECUTE_1);
+ brw_IF(p, BRW_EXECUTE_1);
}
{
}
if (brw->has_negative_rhw_bug) {
- brw_ENDIF(p, is_neg2);
+ brw_ENDIF(p);
}
}
- brw_ENDIF(p, is_negative);
+ brw_ENDIF(p);
}
- brw_ENDIF(p, plane_active);
+ brw_ENDIF(p);
/* plane_ptr++;
*/
*/
brw_set_conditionalmod(p, BRW_CONDITIONAL_NZ);
brw_SHR(p, c->reg.planemask, c->reg.planemask, brw_imm_ud(1));
+ brw_SHR(p, c->reg.vertex_src_mask, c->reg.vertex_src_mask, brw_imm_ud(1));
+ brw_ADD(p, c->reg.clipdistance_offset, c->reg.clipdistance_offset, brw_imm_w(sizeof(float)));
}
- brw_WHILE(p, plane_loop);
+ brw_WHILE(p);
brw_ADD(p, c->reg.t, c->reg.t0, c->reg.t1);
brw_CMP(p, vec1(brw_null_reg()), BRW_CONDITIONAL_L, c->reg.t, brw_imm_f(1.0));
- not_culled = brw_IF(p, BRW_EXECUTE_1);
+ brw_IF(p, BRW_EXECUTE_1);
{
- brw_clip_interp_vertex(c, newvtx0, vtx0, vtx1, c->reg.t0, GL_FALSE);
- brw_clip_interp_vertex(c, newvtx1, vtx1, vtx0, c->reg.t1, GL_FALSE);
-
- brw_clip_emit_vue(c, newvtx0, 1, 0, (_3DPRIM_LINESTRIP << 2) | R02_PRIM_START);
- brw_clip_emit_vue(c, newvtx1, 0, 1, (_3DPRIM_LINESTRIP << 2) | R02_PRIM_END);
+ brw_clip_interp_vertex(c, newvtx0, vtx0, vtx1, c->reg.t0, false);
+ brw_clip_interp_vertex(c, newvtx1, vtx1, vtx0, c->reg.t1, false);
+
+ brw_clip_emit_vue(c, newvtx0, 1, 0,
+ (_3DPRIM_LINESTRIP << URB_WRITE_PRIM_TYPE_SHIFT)
+ | URB_WRITE_PRIM_START);
+ brw_clip_emit_vue(c, newvtx1, 0, 1,
+ (_3DPRIM_LINESTRIP << URB_WRITE_PRIM_TYPE_SHIFT)
+ | URB_WRITE_PRIM_END);
}
- brw_ENDIF(p, not_culled);
+ brw_ENDIF(p);
brw_clip_kill_thread(c);
}
brw_clip_line_alloc_regs(c);
brw_clip_init_ff_sync(c);
- if (c->key.do_flat_shading) {
+ if (c->has_flat_shading) {
if (c->key.pv_first)
- brw_clip_copy_colors(c, 1, 0);
+ brw_clip_copy_flatshaded_attributes(c, 1, 0);
else
- brw_clip_copy_colors(c, 0, 1);
+ brw_clip_copy_flatshaded_attributes(c, 0, 1);
}
clip_and_emit_line(c);
projects / mesa.git / blobdiff