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Diffstat (limited to 'src/mesa/main/ffvertex_prog.c')
-rw-r--r--src/mesa/main/ffvertex_prog.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/src/mesa/main/ffvertex_prog.c b/src/mesa/main/ffvertex_prog.c
index 1ce5685af4..43325b1352 100644
--- a/src/mesa/main/ffvertex_prog.c
+++ b/src/mesa/main/ffvertex_prog.c
@@ -315,12 +315,6 @@ static void make_state_key( GLcontext *ctx, struct state_key *key )
*/
#define DISASSEM 0
-/* Should be tunable by the driver - do we want to do matrix
- * multiplications with DP4's or with MUL/MAD's? SSE works better
- * with the latter, drivers may differ.
- */
-#define PREFER_DP4 0
-
/* Use uregs to represent registers internally, translate to Mesa's
* expected formats on emit.
@@ -348,6 +342,7 @@ struct tnl_program {
const struct state_key *state;
struct gl_vertex_program *program;
GLint max_inst; /** number of instructions allocated for program */
+ GLboolean mvp_with_dp4;
GLuint temp_in_use;
GLuint temp_reserved;
@@ -775,7 +770,7 @@ static struct ureg get_eye_position( struct tnl_program *p )
p->eye_position = reserve_temp(p);
- if (PREFER_DP4) {
+ if (p->mvp_with_dp4) {
register_matrix_param5( p, STATE_MODELVIEW_MATRIX, 0, 0, 3,
0, modelview );
@@ -881,7 +876,7 @@ static void build_hpos( struct tnl_program *p )
struct ureg hpos = register_output( p, VERT_RESULT_HPOS );
struct ureg mvp[4];
- if (PREFER_DP4) {
+ if (p->mvp_with_dp4) {
register_matrix_param5( p, STATE_MVP_MATRIX, 0, 0, 3,
0, mvp );
emit_matrix_transform_vec4( p, hpos, mvp, pos );
@@ -1574,7 +1569,7 @@ static void build_texture_transform( struct tnl_program *p )
struct ureg in = (!is_undef(out_texgen) ?
out_texgen :
register_input(p, VERT_ATTRIB_TEX0+i));
- if (PREFER_DP4) {
+ if (p->mvp_with_dp4) {
register_matrix_param5( p, STATE_TEXTURE_MATRIX, i, 0, 3,
0, texmat );
emit_matrix_transform_vec4( p, out, texmat, in );
@@ -1708,6 +1703,7 @@ static void build_tnl_program( struct tnl_program *p )
static void
create_new_program( const struct state_key *key,
struct gl_vertex_program *program,
+ GLboolean mvp_with_dp4,
GLuint max_temps)
{
struct tnl_program p;
@@ -1721,6 +1717,7 @@ create_new_program( const struct state_key *key,
p.transformed_normal = undef;
p.identity = undef;
p.temp_in_use = 0;
+ p.mvp_with_dp4 = mvp_with_dp4;
if (max_temps >= sizeof(int) * 8)
p.temp_reserved = 0;
@@ -1776,6 +1773,7 @@ _mesa_get_fixed_func_vertex_program(GLcontext *ctx)
return NULL;
create_new_program( &key, prog,
+ ctx->mvp_with_dp4,
ctx->Const.VertexProgram.MaxTemps );
#if 0