From d3033cad7c8a077b093fc5b0c423950473aed9e7 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 2 Jan 2008 01:32:01 +1000 Subject: t_vp_build: fix temporary register allocation to minimise the allocations --- src/mesa/tnl/t_vp_build.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'src') diff --git a/src/mesa/tnl/t_vp_build.c b/src/mesa/tnl/t_vp_build.c index b7bc197723..a7fd815a26 100644 --- a/src/mesa/tnl/t_vp_build.c +++ b/src/mesa/tnl/t_vp_build.c @@ -890,7 +890,6 @@ static void build_lighting( struct tnl_program *p ) { struct ureg shininess = get_material(p, 0, STATE_SHININESS); emit_op1(p, OPCODE_MOV, dots, WRITEMASK_W, swizzle1(shininess,X)); - release_temp(p, shininess); _col0 = make_temp(p, get_scenecolor(p, 0)); if (separate) @@ -904,7 +903,6 @@ static void build_lighting( struct tnl_program *p ) struct ureg shininess = get_material(p, 1, STATE_SHININESS); emit_op1(p, OPCODE_MOV, dots, WRITEMASK_Z, negate(swizzle1(shininess,X))); - release_temp(p, shininess); _bfc0 = make_temp(p, get_scenecolor(p, 1)); if (separate) @@ -972,7 +970,6 @@ static void build_lighting( struct tnl_program *p ) struct ureg tmpPpli = get_temp(p); VPpli = get_temp(p); - half = get_temp(p); /* In homogeneous object coordinates */ @@ -983,6 +980,9 @@ static void build_lighting( struct tnl_program *p ) */ emit_op2(p, OPCODE_SUB, VPpli, 0, tmpPpli, V); + /* we're done with tmpPpli now */ + release_temp(p, tmpPpli); + /* Normalize VPpli. The dist value also used in * attenuation below. */ @@ -997,10 +997,14 @@ static void build_lighting( struct tnl_program *p ) p->state->unit[i].light_attenuated) { att = calculate_light_attenuation(p, i, VPpli, dist); } + + /* We're done with dist now */ + release_temp(p, dist); /* Calculate viewer direction, or use infinite viewer: */ + half = get_temp(p); if (p->state->light_local_viewer) { struct ureg eye_hat = get_eye_position_normalized(p); emit_op2(p, OPCODE_SUB, half, 0, VPpli, eye_hat); @@ -1011,9 +1015,6 @@ static void build_lighting( struct tnl_program *p ) } emit_normalize_vec3(p, half, half); - - release_temp(p, dist); - release_temp(p, tmpPpli); } /* Calculate dot products: @@ -1021,6 +1022,10 @@ static void build_lighting( struct tnl_program *p ) emit_op2(p, OPCODE_DP3, dots, WRITEMASK_X, normal, VPpli); emit_op2(p, OPCODE_DP3, dots, WRITEMASK_Y, normal, half); + /* we're done with VPpli and half now, so free them as to not drive up + our temp usage unnecessary */ + release_temp(p, VPpli); + release_temp(p, half); /* Front face lighting: */ @@ -1109,8 +1114,6 @@ static void build_lighting( struct tnl_program *p ) release_temp(p, specular); } - release_temp(p, half); - release_temp(p, VPpli); release_temp(p, att); } } -- cgit v1.2.3