/**************************************************************************
*
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#include "lp_rast.h"
#include "lp_state_fs.h"
#include "lp_state_setup.h"
+#include "lp_context.h"
+#include "draw/draw_context.h"
#define NUM_CHANNELS 4
float dx;
float dy;
float oneoverarea;
+ boolean frontfacing;
const float (*v1)[4];
const float (*v2)[4];
case LP_INTERP_FACING:
for (i = 0; i < NUM_CHANNELS; i++)
if (usage_mask & (1 << i))
- constant_coef(setup, info, slot+1, 1.0, i);
+ constant_coef(setup, info, slot+1,
+ info->frontfacing ? 1.0f : -1.0f, i);
break;
default:
-static INLINE int subpixel_snap( float a )
+static inline int subpixel_snap( float a )
{
return util_iround(FIXED_ONE * a);
}
}
-static INLINE boolean sign(float x){
+static inline boolean sign(float x){
return x >= 0;
}
/* Used on positive floats only:
*/
-static INLINE float fracf(float f)
+static inline float fracf(float f)
{
return f - floorf(f);
}
const float (*v1)[4],
const float (*v2)[4])
{
+ struct llvmpipe_context *lp_context = (struct llvmpipe_context *)setup->pipe;
struct lp_scene *scene = setup->scene;
const struct lp_setup_variant_key *key = &setup->setup.variant->key;
struct lp_rast_triangle *line;
struct lp_rast_plane *plane;
struct lp_line_info info;
float width = MAX2(1.0, setup->line_width);
- struct u_rect bbox;
+ const struct u_rect *scissor;
+ struct u_rect bbox, bboxpos;
+ boolean s_planes[4];
unsigned tri_bytes;
int x[4];
int y[4];
int i;
int nr_planes = 4;
+ unsigned viewport_index = 0;
+ unsigned layer = 0;
/* linewidth should be interpreted as integer */
int fixed_width = util_iround(width) * FIXED_ONE;
float y2diff;
float dx, dy;
float area;
+ const float (*pv)[4];
boolean draw_start;
boolean draw_end;
if (0)
print_line(setup, v1, v2);
- if (setup->scissor_test) {
- nr_planes = 8;
+ if (setup->flatshade_first) {
+ pv = v1;
}
else {
- nr_planes = 4;
+ pv = v2;
+ }
+ if (setup->viewport_index_slot > 0) {
+ unsigned *udata = (unsigned*)pv[setup->viewport_index_slot];
+ viewport_index = lp_clamp_viewport_idx(*udata);
+ }
+ if (setup->layer_slot > 0) {
+ layer = *(unsigned*)pv[setup->layer_slot];
+ layer = MIN2(layer, scene->fb_max_layer);
}
-
dx = v1[0][0] - v2[0][0];
dy = v1[0][1] - v2[0][1];
y[3] = subpixel_snap(v1[0][1] + y_offset - setup->pixel_offset);
}
-
-
- LP_COUNT(nr_tris);
-
-
/* Bounding rectangle (in pixels) */
{
/* Yes this is necessary to accurately calculate bounding boxes
* up needing a bottom-left fill convention, which requires
* slightly different rounding.
*/
- int adj = (setup->pixel_offset != 0) ? 1 : 0;
+ int adj = (setup->bottom_edge_rule != 0) ? 1 : 0;
bbox.x0 = (MIN4(x[0], x[1], x[2], x[3]) + (FIXED_ONE-1)) >> FIXED_ORDER;
bbox.x1 = (MAX4(x[0], x[1], x[2], x[3]) + (FIXED_ONE-1)) >> FIXED_ORDER;
return TRUE;
}
- if (!u_rect_test_intersection(&setup->draw_region, &bbox)) {
+ if (!u_rect_test_intersection(&setup->draw_regions[viewport_index], &bbox)) {
if (0) debug_printf("offscreen\n");
LP_COUNT(nr_culled_tris);
return TRUE;
}
+ bboxpos = bbox;
+
/* Can safely discard negative regions:
*/
- bbox.x0 = MAX2(bbox.x0, 0);
- bbox.y0 = MAX2(bbox.y0, 0);
+ bboxpos.x0 = MAX2(bboxpos.x0, 0);
+ bboxpos.y0 = MAX2(bboxpos.y0, 0);
+
+ nr_planes = 4;
+ /*
+ * Determine how many scissor planes we need, that is drop scissor
+ * edges if the bounding box of the tri is fully inside that edge.
+ */
+ if (setup->scissor_test) {
+ /* why not just use draw_regions */
+ scissor = &setup->scissors[viewport_index];
+ scissor_planes_needed(s_planes, &bboxpos, scissor);
+ nr_planes += s_planes[0] + s_planes[1] + s_planes[2] + s_planes[3];
+ }
line = lp_setup_alloc_triangle(scene,
key->num_inputs,
line->v[1][1] = v2[0][1];
#endif
+ LP_COUNT(nr_tris);
+
+ if (lp_context->active_statistics_queries) {
+ lp_context->pipeline_statistics.c_primitives++;
+ }
+
/* calculate the deltas */
plane = GET_PLANES(line);
plane[0].dcdy = x[0] - x[1];
plane[2].dcdx = y[2] - y[3];
plane[3].dcdx = y[3] - y[0];
+ if (draw_will_inject_frontface(lp_context->draw) &&
+ setup->face_slot > 0) {
+ line->inputs.frontfacing = v1[setup->face_slot][0];
+ } else {
+ line->inputs.frontfacing = TRUE;
+ }
/* Setup parameter interpolants:
*/
info.a0 = GET_A0(&line->inputs);
info.dadx = GET_DADX(&line->inputs);
info.dady = GET_DADY(&line->inputs);
+ info.frontfacing = line->inputs.frontfacing;
setup_line_coefficients(setup, &info);
- line->inputs.frontfacing = TRUE;
line->inputs.disable = FALSE;
line->inputs.opaque = FALSE;
-
+ line->inputs.layer = layer;
+ line->inputs.viewport_index = viewport_index;
+
+ /*
+ * XXX: this code is mostly identical to the one in lp_setup_tri, except it
+ * uses 4 planes instead of 3. Could share the code (including the sse
+ * assembly, in fact we'd get the 4th plane for free).
+ * The only difference apart from storing the 4th plane would be some
+ * different shuffle for calculating dcdx/dcdy.
+ */
for (i = 0; i < 4; i++) {
- /* half-edge constants, will be interated over the whole render
+ /* half-edge constants, will be iterated over the whole render
* target.
*/
- plane[i].c = plane[i].dcdx * x[i] - plane[i].dcdy * y[i];
+ plane[i].c = IMUL64(plane[i].dcdx, x[i]) - IMUL64(plane[i].dcdy, y[i]);
-
- /* correct for top-left vs. bottom-left fill convention.
- */
+ /* correct for top-left vs. bottom-left fill convention.
+ */
if (plane[i].dcdx < 0) {
/* both fill conventions want this - adjust for left edges */
- plane[i].c++;
+ plane[i].c++;
}
else if (plane[i].dcdx == 0) {
if (setup->pixel_offset == 0) {
* Note that otherwise, the scissor planes only vary in 'C' value,
* and even then only on state-changes. Could alternatively store
* these planes elsewhere.
+ * (Or only store the c value together with a bit indicating which
+ * scissor edge this is, so rasterization would treat them differently
+ * (easier to evaluate) to ordinary planes.)
*/
- if (nr_planes == 8) {
- const struct u_rect *scissor = &setup->scissor;
-
- plane[4].dcdx = -1;
- plane[4].dcdy = 0;
- plane[4].c = 1-scissor->x0;
- plane[4].eo = 1;
-
- plane[5].dcdx = 1;
- plane[5].dcdy = 0;
- plane[5].c = scissor->x1+1;
- plane[5].eo = 0;
-
- plane[6].dcdx = 0;
- plane[6].dcdy = 1;
- plane[6].c = 1-scissor->y0;
- plane[6].eo = 1;
-
- plane[7].dcdx = 0;
- plane[7].dcdy = -1;
- plane[7].c = scissor->y1+1;
- plane[7].eo = 0;
+ if (nr_planes > 4) {
+ struct lp_rast_plane *plane_s = &plane[4];
+
+ if (s_planes[0]) {
+ plane_s->dcdx = ~0U << 8;
+ plane_s->dcdy = 0;
+ plane_s->c = (1-scissor->x0) << 8;
+ plane_s->eo = 1 << 8;
+ plane_s++;
+ }
+ if (s_planes[1]) {
+ plane_s->dcdx = 1 << 8;
+ plane_s->dcdy = 0;
+ plane_s->c = (scissor->x1+1) << 8;
+ plane_s->eo = 0 << 8;
+ plane_s++;
+ }
+ if (s_planes[2]) {
+ plane_s->dcdx = 0;
+ plane_s->dcdy = 1 << 8;
+ plane_s->c = (1-scissor->y0) << 8;
+ plane_s->eo = 1 << 8;
+ plane_s++;
+ }
+ if (s_planes[3]) {
+ plane_s->dcdx = 0;
+ plane_s->dcdy = ~0U << 8;
+ plane_s->c = (scissor->y1+1) << 8;
+ plane_s->eo = 0;
+ plane_s++;
+ }
+ assert(plane_s == &plane[nr_planes]);
}
- return lp_setup_bin_triangle(setup, line, &bbox, nr_planes);
+ return lp_setup_bin_triangle(setup, line, &bbox, &bboxpos, nr_planes, viewport_index);
}
-static void lp_setup_line( struct lp_setup_context *setup,
- const float (*v0)[4],
- const float (*v1)[4] )
+static void lp_setup_line_discard(struct lp_setup_context *setup,
+ const float (*v0)[4],
+ const float (*v1)[4])
{
- if (!try_setup_line( setup, v0, v1 ))
- {
+}
+
+static void lp_setup_line(struct lp_setup_context *setup,
+ const float (*v0)[4],
+ const float (*v1)[4])
+{
+ if (!try_setup_line(setup, v0, v1)) {
if (!lp_setup_flush_and_restart(setup))
return;
- if (!try_setup_line( setup, v0, v1 ))
+ if (!try_setup_line(setup, v0, v1))
return;
}
}
-void lp_setup_choose_line( struct lp_setup_context *setup )
+void lp_setup_choose_line(struct lp_setup_context *setup)
{
- setup->line = lp_setup_line;
+ if (setup->rasterizer_discard) {
+ setup->line = lp_setup_line_discard;
+ } else {
+ setup->line = lp_setup_line;
+ }
}
projects / mesa.git / blobdiff