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llvmpipe: track drawing region as a single u_rect

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This commit is contained in:
Keith Whitwell
2010-08-24 20:04:08 +01:00
parent d808f7b53e
commit 29bcbf5e79
3 changed files with 86 additions and 63 deletions
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29
src/gallium/drivers/llvmpipe/lp_setup.c
View File

@@ -315,6 +315,11 @@ lp_setup_bind_framebuffer( struct lp_setup_context *setup,
* scene.
*/
util_copy_framebuffer_state(&setup->fb, fb);
setup->framebuffer.x0 = 0;
setup->framebuffer.y0 = 0;
setup->framebuffer.x1 = fb->width-1;
setup->framebuffer.y1 = fb->height-1;
setup->dirty |= LP_SETUP_NEW_SCISSOR;
}
@@ -472,8 +477,12 @@ lp_setup_set_triangle_state( struct lp_setup_context *setup,
setup->ccw_is_frontface = ccw_is_frontface;
setup->cullmode = cull_mode;
setup->triangle = first_triangle;
setup->scissor_test = scissor;
setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
if (setup->scissor_test != scissor) {
setup->dirty |= LP_SETUP_NEW_SCISSOR;
setup->scissor_test = scissor;
}
}
@@ -562,10 +571,11 @@ lp_setup_set_scissor( struct lp_setup_context *setup,
assert(scissor);
if (memcmp(&setup->scissor.current, scissor, sizeof(*scissor)) != 0) {
setup->scissor.current = *scissor; /* struct copy */
setup->dirty |= LP_SETUP_NEW_SCISSOR;
}
setup->scissor.x0 = scissor->minx;
setup->scissor.x1 = scissor->maxx-1;
setup->scissor.y0 = scissor->miny;
setup->scissor.y1 = scissor->maxy-1;
setup->dirty |= LP_SETUP_NEW_SCISSOR;
}
@@ -805,6 +815,15 @@ lp_setup_update_state( struct lp_setup_context *setup )
for (i = 0; i < Elements(setup->fs.current_tex); i++) {
if (setup->fs.current_tex[i])
lp_scene_add_resource_reference(scene, setup->fs.current_tex[i]);
if (setup->dirty & LP_SETUP_NEW_SCISSOR) {
setup->draw_region = setup->framebuffer;
if (setup->scissor_test) {
u_rect_possible_intersection(&setup->scissor,
&setup->draw_region);
}
}
}
}
}

7
src/gallium/drivers/llvmpipe/lp_setup_context.h
View File

@@ -41,6 +41,7 @@
#include "lp_scene.h"
#include "draw/draw_vbuf.h"
#include "util/u_rect.h"
#define LP_SETUP_NEW_FS 0x01
#define LP_SETUP_NEW_CONSTANTS 0x02
@@ -92,6 +93,9 @@ struct lp_setup_context
float pixel_offset;
struct pipe_framebuffer_state fb;
struct u_rect framebuffer;
struct u_rect scissor;
struct u_rect draw_region; /* intersection of fb & scissor */
struct {
unsigned flags;
@@ -127,9 +131,6 @@ struct lp_setup_context
uint8_t *stored;
} blend_color;
struct {
struct pipe_scissor_state current;
} scissor;
unsigned dirty; /**< bitmask of LP_SETUP_NEW_x bits */

113
src/gallium/drivers/llvmpipe/lp_setup_tri.c
View File

@@ -31,6 +31,7 @@
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_rect.h"
#include "lp_perf.h"
#include "lp_setup_context.h"
#include "lp_rast.h"
@@ -450,7 +451,7 @@ do_triangle_ccw(struct lp_setup_context *setup,
struct lp_rast_triangle *tri;
struct tri_info info;
int area;
int minx, maxx, miny, maxy;
struct u_rect bbox;
int ix0, ix1, iy0, iy1;
unsigned tri_bytes;
int i;
@@ -466,6 +467,50 @@ do_triangle_ccw(struct lp_setup_context *setup,
nr_planes = 3;
}
/* x/y positions in fixed point */
info.x[0] = subpixel_snap(v1[0][0] - setup->pixel_offset);
info.x[1] = subpixel_snap(v2[0][0] - setup->pixel_offset);
info.x[2] = subpixel_snap(v3[0][0] - setup->pixel_offset);
info.y[0] = subpixel_snap(v1[0][1] - setup->pixel_offset);
info.y[1] = subpixel_snap(v2[0][1] - setup->pixel_offset);
info.y[2] = subpixel_snap(v3[0][1] - setup->pixel_offset);
/* Bounding rectangle (in pixels) */
{
/* Yes this is necessary to accurately calculate bounding boxes
* with the two fill-conventions we support. GL (normally) ends
* up needing a bottom-left fill convention, which requires
* slightly different rounding.
*/
int adj = (setup->pixel_offset != 0) ? 1 : 0;
bbox.x0 = (MIN3(info.x[0], info.x[1], info.x[2]) + (FIXED_ONE-1)) >> FIXED_ORDER;
bbox.x1 = (MAX3(info.x[0], info.x[1], info.x[2]) + (FIXED_ONE-1)) >> FIXED_ORDER;
bbox.y0 = (MIN3(info.y[0], info.y[1], info.y[2]) + (FIXED_ONE-1) + adj) >> FIXED_ORDER;
bbox.y1 = (MAX3(info.y[0], info.y[1], info.y[2]) + (FIXED_ONE-1) + adj) >> FIXED_ORDER;
/* Inclusive coordinates:
*/
bbox.x1--;
bbox.y1--;
}
if (bbox.x1 < bbox.x0 ||
bbox.y1 < bbox.y0) {
if (0) debug_printf("empty bounding box\n");
LP_COUNT(nr_culled_tris);
return;
}
if (!u_rect_test_intersection(&setup->draw_region, &bbox)) {
if (0) debug_printf("offscreen\n");
LP_COUNT(nr_culled_tris);
return;
}
u_rect_find_intersection(&setup->draw_region, &bbox);
tri = alloc_triangle(scene,
setup->fs.nr_inputs,
@@ -483,14 +528,6 @@ do_triangle_ccw(struct lp_setup_context *setup,
tri->v[2][1] = v3[0][1];
#endif
/* x/y positions in fixed point */
info.x[0] = subpixel_snap(v1[0][0] - setup->pixel_offset);
info.x[1] = subpixel_snap(v2[0][0] - setup->pixel_offset);
info.x[2] = subpixel_snap(v3[0][0] - setup->pixel_offset);
info.y[0] = subpixel_snap(v1[0][1] - setup->pixel_offset);
info.y[1] = subpixel_snap(v2[0][1] - setup->pixel_offset);
info.y[2] = subpixel_snap(v3[0][1] - setup->pixel_offset);
tri->plane[0].dcdy = info.x[0] - info.x[1];
tri->plane[1].dcdy = info.x[1] - info.x[2];
tri->plane[2].dcdy = info.x[2] - info.x[0];
@@ -514,40 +551,6 @@ do_triangle_ccw(struct lp_setup_context *setup,
return;
}
/* Bounding rectangle (in pixels) */
{
/* Yes this is necessary to accurately calculate bounding boxes
* with the two fill-conventions we support. GL (normally) ends
* up needing a bottom-left fill convention, which requires
* slightly different rounding.
*/
int adj = (setup->pixel_offset != 0) ? 1 : 0;
minx = (MIN3(info.x[0], info.x[1], info.x[2]) + (FIXED_ONE-1)) >> FIXED_ORDER;
maxx = (MAX3(info.x[0], info.x[1], info.x[2]) + (FIXED_ONE-1)) >> FIXED_ORDER;
miny = (MIN3(info.y[0], info.y[1], info.y[2]) + (FIXED_ONE-1) + adj) >> FIXED_ORDER;
maxy = (MAX3(info.y[0], info.y[1], info.y[2]) + (FIXED_ONE-1) + adj) >> FIXED_ORDER;
}
if (setup->scissor_test) {
minx = MAX2(minx, setup->scissor.current.minx);
maxx = MIN2(maxx, setup->scissor.current.maxx);
miny = MAX2(miny, setup->scissor.current.miny);
maxy = MIN2(maxy, setup->scissor.current.maxy);
}
else {
minx = MAX2(minx, 0);
miny = MAX2(miny, 0);
maxx = MIN2(maxx, scene->fb.width);
maxy = MIN2(maxy, scene->fb.height);
}
if (miny >= maxy || minx >= maxx) {
lp_scene_putback_data( scene, tri_bytes );
LP_COUNT(nr_culled_tris);
return;
}
/*
*/
@@ -648,25 +651,25 @@ do_triangle_ccw(struct lp_setup_context *setup,
if (nr_planes == 7) {
tri->plane[3].dcdx = -1;
tri->plane[3].dcdy = 0;
tri->plane[3].c = 1-minx;
tri->plane[3].c = 1-bbox.x0;
tri->plane[3].ei = 0;
tri->plane[3].eo = 1;
tri->plane[4].dcdx = 1;
tri->plane[4].dcdy = 0;
tri->plane[4].c = maxx;
tri->plane[4].c = bbox.x1+1;
tri->plane[4].ei = -1;
tri->plane[4].eo = 0;
tri->plane[5].dcdx = 0;
tri->plane[5].dcdy = 1;
tri->plane[5].c = 1-miny;
tri->plane[5].c = 1-bbox.y0;
tri->plane[5].ei = 0;
tri->plane[5].eo = 1;
tri->plane[6].dcdx = 0;
tri->plane[6].dcdy = -1;
tri->plane[6].c = maxy;
tri->plane[6].c = bbox.y1+1;
tri->plane[6].ei = -1;
tri->plane[6].eo = 0;
}
@@ -680,10 +683,10 @@ do_triangle_ccw(struct lp_setup_context *setup,
/* Convert to tile coordinates, and inclusive ranges:
*/
if (nr_planes == 3) {
int ix0 = minx / 16;
int iy0 = miny / 16;
int ix1 = (maxx-1) / 16;
int iy1 = (maxy-1) / 16;
int ix0 = bbox.x0 / 16;
int iy0 = bbox.y0 / 16;
int ix1 = bbox.x1 / 16;
int iy1 = bbox.y1 / 16;
if (iy0 == iy1 && ix0 == ix1)
{
@@ -699,10 +702,10 @@ do_triangle_ccw(struct lp_setup_context *setup,
}
}
ix0 = minx / TILE_SIZE;
iy0 = miny / TILE_SIZE;
ix1 = (maxx-1) / TILE_SIZE;
iy1 = (maxy-1) / TILE_SIZE;
ix0 = bbox.x0 / TILE_SIZE;
iy0 = bbox.y0 / TILE_SIZE;
ix1 = bbox.x1 / TILE_SIZE;
iy1 = bbox.y1 / TILE_SIZE;
/*
* Clamp to framebuffer size