* Binning code for points
*/
-#include "lp_setup_context.h"
#include "util/u_math.h"
#include "util/u_memory.h"
+#include "lp_setup_context.h"
#include "lp_perf.h"
#include "lp_rast.h"
#include "lp_state_fs.h"
#include "lp_state_setup.h"
+#include "lp_context.h"
#include "tgsi/tgsi_scan.h"
+#include "draw/draw_context.h"
#define NUM_CHANNELS 4
float (*a0)[4];
float (*dadx)[4];
float (*dady)[4];
+
+ boolean frontfacing;
};
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
+static inline int
subpixel_snap(float a)
{
return util_iround(FIXED_ONE * a);
}
+/**
+ * Print point vertex attribs (for debug).
+ */
+static void
+print_point(struct lp_setup_context *setup,
+ const float (*v0)[4],
+ const float size)
+{
+ const struct lp_setup_variant_key *key = &setup->setup.variant->key;
+ uint i;
+
+ debug_printf("llvmpipe point, width %f\n", size);
+ for (i = 0; i < 1 + key->num_inputs; i++) {
+ debug_printf(" v0[%d]: %f %f %f %f\n", i,
+ v0[i][0], v0[i][1], v0[i][2], v0[i][3]);
+ }
+}
+
static boolean
try_setup_point( struct lp_setup_context *setup,
const float (*v0)[4] )
{
+ struct llvmpipe_context *lp_context = (struct llvmpipe_context *)setup->pipe;
/* x/y positions in fixed point */
const struct lp_setup_variant_key *key = &setup->setup.variant->key;
- const int sizeAttr = setup->psize;
+ const int sizeAttr = setup->psize_slot;
const float size
= (setup->point_size_per_vertex && sizeAttr > 0) ? v0[sizeAttr][0]
: setup->point_size;
-
- /* Point size as fixed point integer, remove rounding errors
- * and gives minimum width for very small points
+
+ /* 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 fixed_width = MAX2(FIXED_ONE,
- (subpixel_snap(size) + FIXED_ONE/2 - 1) & ~(FIXED_ONE-1));
+ int adj = (setup->bottom_edge_rule != 0) ? 1 : 0;
- const int x0 = subpixel_snap(v0[0][0] - setup->pixel_offset) - fixed_width/2;
- const int y0 = subpixel_snap(v0[0][1] - setup->pixel_offset) - fixed_width/2;
-
struct lp_scene *scene = setup->scene;
struct lp_rast_triangle *point;
unsigned bytes;
struct u_rect bbox;
unsigned nr_planes = 4;
struct point_info info;
+ unsigned viewport_index = 0;
+ unsigned layer = 0;
+ int fixed_width;
+ if (setup->viewport_index_slot > 0) {
+ unsigned *udata = (unsigned*)v0[setup->viewport_index_slot];
+ viewport_index = lp_clamp_viewport_idx(*udata);
+ }
+ if (setup->layer_slot > 0) {
+ layer = *(unsigned*)v0[setup->layer_slot];
+ layer = MIN2(layer, scene->fb_max_layer);
+ }
+
+ if (0)
+ print_point(setup, v0, size);
/* 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.
+ if (!lp_context->rasterizer ||
+ lp_context->rasterizer->point_quad_rasterization) {
+ /*
+ * Rasterize points as quads.
*/
- int adj = (setup->pixel_offset != 0) ? 1 : 0;
+ int x0, y0;
+ /* Point size as fixed point integer, remove rounding errors
+ * and gives minimum width for very small points.
+ */
+ fixed_width = MAX2(FIXED_ONE, subpixel_snap(size));
+
+ x0 = subpixel_snap(v0[0][0] - setup->pixel_offset) - fixed_width/2;
+ y0 = subpixel_snap(v0[0][1] - setup->pixel_offset) - fixed_width/2;
- bbox.x0 = (x0 + (FIXED_ONE-1) + adj) >> FIXED_ORDER;
- bbox.x1 = (x0 + fixed_width + (FIXED_ONE-1) + adj) >> FIXED_ORDER;
- bbox.y0 = (y0 + (FIXED_ONE-1)) >> FIXED_ORDER;
- bbox.y1 = (y0 + fixed_width + (FIXED_ONE-1)) >> FIXED_ORDER;
+ bbox.x0 = (x0 + (FIXED_ONE-1)) >> FIXED_ORDER;
+ bbox.x1 = (x0 + fixed_width + (FIXED_ONE-1)) >> FIXED_ORDER;
+ bbox.y0 = (y0 + (FIXED_ONE-1) + adj) >> FIXED_ORDER;
+ bbox.y1 = (y0 + fixed_width + (FIXED_ONE-1) + adj) >> FIXED_ORDER;
/* Inclusive coordinates:
*/
bbox.x1--;
bbox.y1--;
+ } else {
+ /*
+ * OpenGL legacy rasterization rules for non-sprite points.
+ *
+ * Per OpenGL 2.1 spec, section 3.3.1, "Basic Point Rasterization".
+ *
+ * This type of point rasterization is only available in pre 3.0 contexts
+ * (or compatibilility contexts which we don't support) anyway.
+ */
+
+ const int x0 = subpixel_snap(v0[0][0]);
+ const int y0 = subpixel_snap(v0[0][1]) - adj;
+
+ int int_width;
+ /* Point size as fixed point integer. For GL legacy points
+ * the point size is always a whole integer.
+ */
+ fixed_width = MAX2(FIXED_ONE,
+ (subpixel_snap(size) + FIXED_ONE/2 - 1) & ~(FIXED_ONE-1));
+ int_width = fixed_width >> FIXED_ORDER;
+
+ assert(setup->pixel_offset != 0);
+
+ if (int_width == 1) {
+ bbox.x0 = x0 >> FIXED_ORDER;
+ bbox.y0 = y0 >> FIXED_ORDER;
+ bbox.x1 = bbox.x0;
+ bbox.y1 = bbox.y0;
+ } else {
+ if (int_width & 1) {
+ /* Odd width */
+ bbox.x0 = (x0 >> FIXED_ORDER) - (int_width - 1)/2;
+ bbox.y0 = (y0 >> FIXED_ORDER) - (int_width - 1)/2;
+ } else {
+ /* Even width */
+ bbox.x0 = ((x0 + FIXED_ONE/2) >> FIXED_ORDER) - int_width/2;
+ bbox.y0 = ((y0 + FIXED_ONE/2) >> FIXED_ORDER) - int_width/2;
+ }
+
+ bbox.x1 = bbox.x0 + int_width - 1;
+ bbox.y1 = bbox.y0 + int_width - 1;
+ }
}
-
- if (!u_rect_test_intersection(&setup->draw_region, &bbox)) {
+
+ if (0) {
+ debug_printf(" bbox: (%i, %i) - (%i, %i)\n",
+ bbox.x0, bbox.y0,
+ bbox.x1, bbox.y1);
+ }
+
+ if (!u_rect_test_intersection(&setup->draw_regions[viewport_index], &bbox)) {
if (0) debug_printf("offscreen\n");
LP_COUNT(nr_culled_tris);
return TRUE;
}
- u_rect_find_intersection(&setup->draw_region, &bbox);
+ u_rect_find_intersection(&setup->draw_regions[viewport_index], &bbox);
point = lp_setup_alloc_triangle(scene,
key->num_inputs,
point->v[0][1] = v0[0][1];
#endif
+ LP_COUNT(nr_tris);
+
+ if (lp_context->active_statistics_queries &&
+ !llvmpipe_rasterization_disabled(lp_context)) {
+ lp_context->pipeline_statistics.c_primitives++;
+ }
+
+ if (draw_will_inject_frontface(lp_context->draw) &&
+ setup->face_slot > 0) {
+ point->inputs.frontfacing = v0[setup->face_slot][0];
+ } else {
+ point->inputs.frontfacing = TRUE;
+ }
+
info.v0 = v0;
info.dx01 = 0;
info.dx12 = fixed_width;
info.a0 = GET_A0(&point->inputs);
info.dadx = GET_DADX(&point->inputs);
info.dady = GET_DADY(&point->inputs);
+ info.frontfacing = point->inputs.frontfacing;
/* Setup parameter interpolants:
*/
setup_point_coefficients(setup, &info);
- point->inputs.frontfacing = TRUE;
point->inputs.disable = FALSE;
point->inputs.opaque = FALSE;
+ point->inputs.layer = layer;
+ point->inputs.viewport_index = viewport_index;
{
struct lp_rast_plane *plane = GET_PLANES(point);
- plane[0].dcdx = -1;
+ plane[0].dcdx = -1 << 8;
plane[0].dcdy = 0;
- plane[0].c = 1-bbox.x0;
- plane[0].eo = 1;
+ plane[0].c = (1-bbox.x0) << 8;
+ plane[0].eo = 1 << 8;
- plane[1].dcdx = 1;
+ plane[1].dcdx = 1 << 8;
plane[1].dcdy = 0;
- plane[1].c = bbox.x1+1;
+ plane[1].c = (bbox.x1+1) << 8;
plane[1].eo = 0;
plane[2].dcdx = 0;
- plane[2].dcdy = 1;
- plane[2].c = 1-bbox.y0;
- plane[2].eo = 1;
+ plane[2].dcdy = 1 << 8;
+ plane[2].c = (1-bbox.y0) << 8;
+ plane[2].eo = 1 << 8;
plane[3].dcdx = 0;
- plane[3].dcdy = -1;
- plane[3].c = bbox.y1+1;
+ plane[3].dcdy = -1 << 8;
+ plane[3].c = (bbox.y1+1) << 8;
plane[3].eo = 0;
}
- return lp_setup_bin_triangle(setup, point, &bbox, nr_planes);
+ return lp_setup_bin_triangle(setup, point, &bbox, &bbox, nr_planes, viewport_index);
}
projects / mesa.git / blobdiff