fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-09 11:08:03 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

llvmpipe: consolidate lp_scene_alloc_aligned() calls

Browse source 
Use just one call instead of four.  Good for a few more fps.
This commit is contained in:
Brian Paul 2010-01-21 19:04:53 -07:00
parent 798a9d3f94
commit e24ea786fa
1 changed files with 41 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

54
src/gallium/drivers/llvmpipe/lp_setup_tri.c
View file

@ -181,18 +181,8 @@ static void setup_tri_coefficients( struct setup_context *setup,
const float (*v3)[4],
boolean frontface)
{
struct lp_scene *scene = lp_setup_get_current_scene(setup);
unsigned slot;
/* Allocate space for the a0, dadx and dady arrays
*/
{
unsigned bytes = (setup->fs.nr_inputs + 1) * 4 * sizeof(float);
tri->inputs.a0 = lp_scene_alloc_aligned( scene, bytes, 16 );
tri->inputs.dadx = lp_scene_alloc_aligned( scene, bytes, 16 );
tri->inputs.dady = lp_scene_alloc_aligned( scene, bytes, 16 );
}
/* The internal position input is in slot zero:
*/
setup_fragcoord_coef(tri, oneoverarea, 0, v1, v2, v3);
@ -243,6 +233,41 @@ static inline int subpixel_snap( float a )
}
/**
* Alloc space for a new triangle plus the input.a0/dadx/dady arrays
* immediately after it.
* The memory is allocated from the per-scene pool, not per-tile.
* \param tri_size returns number of bytes allocated
* \param nr_inputs number of fragment shader inputs
* \return pointer to triangle space
*/
static INLINE struct lp_rast_triangle *
alloc_triangle(struct lp_scene *scene, unsigned nr_inputs, unsigned *tri_size)
{
unsigned input_array_sz = NUM_CHANNELS * (nr_inputs + 1) * sizeof(float);
struct lp_rast_triangle *tri;
unsigned bytes;
char *inputs;
assert(sizeof(*tri) % 16 == 0);
bytes = sizeof(*tri) + (3 * input_array_sz);
tri = lp_scene_alloc_aligned( scene, bytes, 16 );
inputs = (char *) (tri + 1);
tri->inputs.a0 = (float (*)[4]) inputs;
tri->inputs.dadx = (float (*)[4]) (inputs + input_array_sz);
tri->inputs.dady = (float (*)[4]) (inputs + 2 * input_array_sz);
*tri_size = bytes;
return tri;
}
/**
* Do basic setup for triangle rasterization and determine which
* framebuffer tiles are touched. Put the triangle in the scene's
@ -264,10 +289,13 @@ do_triangle_ccw(struct setup_context *setup,
const int y3 = subpixel_snap(v3[0][1]);
struct lp_scene *scene = lp_setup_get_current_scene(setup);
struct lp_rast_triangle *tri = lp_scene_alloc_aligned( scene, sizeof *tri, 16 );
struct lp_rast_triangle *tri;
int area;
float oneoverarea;
int minx, maxx, miny, maxy;
unsigned tri_bytes;
tri = alloc_triangle(scene, setup->fs.nr_inputs, &tri_bytes);
tri->dx12 = x1 - x2;
tri->dx23 = x2 - x3;
@ -286,7 +314,7 @@ do_triangle_ccw(struct setup_context *setup,
* XXX: subject to overflow??
*/
if (area <= 0) {
lp_scene_putback_data( scene, sizeof *tri );
lp_scene_putback_data( scene, tri_bytes );
LP_COUNT(nr_culled_tris);
return;
}
@ -306,7 +334,7 @@ do_triangle_ccw(struct setup_context *setup,
if (miny == maxy ||
minx == maxx) {
lp_scene_putback_data( scene, sizeof *tri );
lp_scene_putback_data( scene, tri_bytes );
LP_COUNT(nr_culled_tris);
return;
}