#include "lp_setup_context.h"
#include "lp_rast.h"
#include "lp_state_fs.h"
+#include "lp_state_setup.h"
+#include "lp_context.h"
#define NUM_CHANNELS 4
const float (*v1)[4];
const float (*v2)[4];
+
+ float (*a0)[4];
+ float (*dadx)[4];
+ float (*dady)[4];
};
* Compute a0 for a constant-valued coefficient (GL_FLAT shading).
*/
static void constant_coef( struct lp_setup_context *setup,
- struct lp_rast_triangle *tri,
+ struct lp_line_info *info,
unsigned slot,
const float value,
unsigned i )
{
- tri->inputs.a0[slot][i] = value;
- tri->inputs.dadx[slot][i] = 0.0f;
- tri->inputs.dady[slot][i] = 0.0f;
+ info->a0[slot][i] = value;
+ info->dadx[slot][i] = 0.0f;
+ info->dady[slot][i] = 0.0f;
}
* for a triangle.
*/
static void linear_coef( struct lp_setup_context *setup,
- struct lp_rast_triangle *tri,
struct lp_line_info *info,
unsigned slot,
unsigned vert_attr,
float dadx = da21 * info->dx * info->oneoverarea;
float dady = da21 * info->dy * info->oneoverarea;
- tri->inputs.dadx[slot][i] = dadx;
- tri->inputs.dady[slot][i] = dady;
+ info->dadx[slot][i] = dadx;
+ info->dady[slot][i] = dady;
- tri->inputs.a0[slot][i] = (a1 -
+ info->a0[slot][i] = (a1 -
(dadx * (info->v1[0][0] - setup->pixel_offset) +
dady * (info->v1[0][1] - setup->pixel_offset)));
}
* divide the interpolated value by the interpolated W at that fragment.
*/
static void perspective_coef( struct lp_setup_context *setup,
- struct lp_rast_triangle *tri,
struct lp_line_info *info,
unsigned slot,
unsigned vert_attr,
float dadx = da21 * info->dx * info->oneoverarea;
float dady = da21 * info->dy * info->oneoverarea;
- tri->inputs.dadx[slot][i] = dadx;
- tri->inputs.dady[slot][i] = dady;
+ info->dadx[slot][i] = dadx;
+ info->dady[slot][i] = dady;
- tri->inputs.a0[slot][i] = (a1 -
- (dadx * (info->v1[0][0] - setup->pixel_offset) +
- dady * (info->v1[0][1] - setup->pixel_offset)));
+ info->a0[slot][i] = (a1 -
+ (dadx * (info->v1[0][0] - setup->pixel_offset) +
+ dady * (info->v1[0][1] - setup->pixel_offset)));
}
static void
setup_fragcoord_coef( struct lp_setup_context *setup,
- struct lp_rast_triangle *tri,
struct lp_line_info *info,
unsigned slot,
unsigned usage_mask)
{
/*X*/
if (usage_mask & TGSI_WRITEMASK_X) {
- tri->inputs.a0[slot][0] = 0.0;
- tri->inputs.dadx[slot][0] = 1.0;
- tri->inputs.dady[slot][0] = 0.0;
+ info->a0[slot][0] = 0.0;
+ info->dadx[slot][0] = 1.0;
+ info->dady[slot][0] = 0.0;
}
/*Y*/
if (usage_mask & TGSI_WRITEMASK_Y) {
- tri->inputs.a0[slot][1] = 0.0;
- tri->inputs.dadx[slot][1] = 0.0;
- tri->inputs.dady[slot][1] = 1.0;
+ info->a0[slot][1] = 0.0;
+ info->dadx[slot][1] = 0.0;
+ info->dady[slot][1] = 1.0;
}
/*Z*/
if (usage_mask & TGSI_WRITEMASK_Z) {
- linear_coef(setup, tri, info, slot, 0, 2);
+ linear_coef(setup, info, slot, 0, 2);
}
/*W*/
if (usage_mask & TGSI_WRITEMASK_W) {
- linear_coef(setup, tri, info, slot, 0, 3);
+ linear_coef(setup, info, slot, 0, 3);
}
}
* Compute the tri->coef[] array dadx, dady, a0 values.
*/
static void setup_line_coefficients( struct lp_setup_context *setup,
- struct lp_rast_triangle *tri,
struct lp_line_info *info)
{
+ const struct lp_setup_variant_key *key = &setup->setup.variant->key;
unsigned fragcoord_usage_mask = TGSI_WRITEMASK_XYZ;
unsigned slot;
/* setup interpolation for all the remaining attributes:
*/
- for (slot = 0; slot < setup->fs.nr_inputs; slot++) {
- unsigned vert_attr = setup->fs.input[slot].src_index;
- unsigned usage_mask = setup->fs.input[slot].usage_mask;
+ for (slot = 0; slot < key->num_inputs; slot++) {
+ unsigned vert_attr = key->inputs[slot].src_index;
+ unsigned usage_mask = key->inputs[slot].usage_mask;
unsigned i;
- switch (setup->fs.input[slot].interp) {
+ switch (key->inputs[slot].interp) {
case LP_INTERP_CONSTANT:
- if (setup->flatshade_first) {
+ if (key->flatshade_first) {
for (i = 0; i < NUM_CHANNELS; i++)
if (usage_mask & (1 << i))
- constant_coef(setup, tri, slot+1, info->v1[vert_attr][i], i);
+ constant_coef(setup, info, slot+1, info->v1[vert_attr][i], i);
}
else {
for (i = 0; i < NUM_CHANNELS; i++)
if (usage_mask & (1 << i))
- constant_coef(setup, tri, slot+1, info->v2[vert_attr][i], i);
+ constant_coef(setup, info, slot+1, info->v2[vert_attr][i], i);
}
break;
case LP_INTERP_LINEAR:
for (i = 0; i < NUM_CHANNELS; i++)
if (usage_mask & (1 << i))
- linear_coef(setup, tri, info, slot+1, vert_attr, i);
+ linear_coef(setup, info, slot+1, vert_attr, i);
break;
case LP_INTERP_PERSPECTIVE:
for (i = 0; i < NUM_CHANNELS; i++)
if (usage_mask & (1 << i))
- perspective_coef(setup, tri, info, slot+1, vert_attr, i);
+ perspective_coef(setup, info, slot+1, vert_attr, i);
fragcoord_usage_mask |= TGSI_WRITEMASK_W;
break;
fragcoord_usage_mask |= usage_mask;
break;
+ 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);
+ break;
+
default:
assert(0);
}
/* The internal position input is in slot zero:
*/
- setup_fragcoord_coef(setup, tri, info, 0,
+ setup_fragcoord_coef(setup, info, 0,
fragcoord_usage_mask);
}
const float (*v1)[4],
const float (*v2)[4])
{
+ const struct lp_setup_variant_key *key = &setup->setup.variant->key;
uint i;
debug_printf("llvmpipe line\n");
- for (i = 0; i < 1 + setup->fs.nr_inputs; i++) {
+ for (i = 0; i < 1 + key->num_inputs; i++) {
debug_printf(" v1[%d]: %f %f %f %f\n", i,
v1[i][0], v1[i][1], v1[i][2], v1[i][3]);
}
- for (i = 0; i < 1 + setup->fs.nr_inputs; i++) {
+ for (i = 0; i < 1 + key->num_inputs; i++) {
debug_printf(" v2[%d]: %f %f %f %f\n", i,
v2[i][0], v2[i][1], v2[i][2], v2[i][3]);
}
-static void
-lp_setup_line( struct lp_setup_context *setup,
+static boolean
+try_setup_line( struct lp_setup_context *setup,
const float (*v1)[4],
const float (*v2)[4])
{
- struct lp_scene *scene = lp_setup_get_current_scene(setup);
+ 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;
int y[4];
int i;
int nr_planes = 4;
+ unsigned scissor_index = 0;
+ unsigned layer = 0;
/* linewidth should be interpreted as integer */
int fixed_width = util_iround(width) * FIXED_ONE;
float x2diff;
float y2diff;
float dx, dy;
+ float area;
boolean draw_start;
boolean draw_end;
if (setup->scissor_test) {
nr_planes = 8;
+ if (setup->viewport_index_slot > 0) {
+ unsigned *udata = (unsigned*)v1[setup->viewport_index_slot];
+ scissor_index = lp_clamp_scissor_idx(*udata);
+ }
}
else {
nr_planes = 4;
}
+ if (setup->layer_slot > 0) {
+ layer = *(unsigned*)v1[setup->layer_slot];
+ layer = MIN2(layer, scene->fb_max_layer);
+ }
dx = v1[0][0] - v2[0][0];
dy = v1[0][1] - v2[0][1];
+ area = (dx * dx + dy * dy);
+ if (area == 0) {
+ LP_COUNT(nr_culled_tris);
+ return TRUE;
+ }
+
+ info.oneoverarea = 1.0f / area;
+ info.dx = dx;
+ info.dy = dy;
+ info.v1 = v1;
+ info.v2 = v2;
+
/* X-MAJOR LINE */
if (fabsf(dx) >= fabsf(dy)) {
else {
/* do intersection test */
float xintersect = fracf(v2[0][0]) + y2diff * dxdy;
- draw_end = (xintersect < 1.0 && xintersect > 0.0);
+ draw_end = (xintersect < 1.0 && xintersect >= 0.0);
}
/* Are we already drawing start/end?
x_offset_end = y_offset_end * dxdy;
}
}
-
+
/* x/y positions in fixed point */
x[0] = subpixel_snap(v1[0][0] + x_offset - setup->pixel_offset) - fixed_width/2;
x[1] = subpixel_snap(v2[0][0] + x_offset_end - setup->pixel_offset) - fixed_width/2;
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
bbox.y1 < bbox.y0) {
if (0) debug_printf("empty bounding box\n");
LP_COUNT(nr_culled_tris);
- return;
+ return TRUE;
}
- if (!u_rect_test_intersection(&setup->draw_region, &bbox)) {
+ if (!u_rect_test_intersection(&setup->draw_regions[scissor_index], &bbox)) {
if (0) debug_printf("offscreen\n");
LP_COUNT(nr_culled_tris);
- return;
+ return TRUE;
}
- u_rect_find_intersection(&setup->draw_region, &bbox);
+ /* Can safely discard negative regions:
+ */
+ bbox.x0 = MAX2(bbox.x0, 0);
+ bbox.y0 = MAX2(bbox.y0, 0);
line = lp_setup_alloc_triangle(scene,
- setup->fs.nr_inputs,
+ key->num_inputs,
nr_planes,
&tri_bytes);
if (!line)
- return;
+ return FALSE;
#ifdef DEBUG
line->v[0][0] = v1[0][0];
line->v[1][1] = v2[0][1];
#endif
- /* calculate the deltas */
- line->plane[0].dcdy = x[0] - x[1];
- line->plane[1].dcdy = x[1] - x[2];
- line->plane[2].dcdy = x[2] - x[3];
- line->plane[3].dcdy = x[3] - x[0];
+ LP_COUNT(nr_tris);
- line->plane[0].dcdx = y[0] - y[1];
- line->plane[1].dcdx = y[1] - y[2];
- line->plane[2].dcdx = y[2] - y[3];
- line->plane[3].dcdx = y[3] - y[0];
+ if (setup->active_query[PIPE_QUERY_PIPELINE_STATISTICS]) {
+ struct llvmpipe_context *lp_context = (struct llvmpipe_context *)setup->pipe;
+ lp_context->pipeline_statistics.c_primitives++;
+ }
+ /* calculate the deltas */
+ plane = GET_PLANES(line);
+ plane[0].dcdy = x[0] - x[1];
+ plane[1].dcdy = x[1] - x[2];
+ plane[2].dcdy = x[2] - x[3];
+ plane[3].dcdy = x[3] - x[0];
+
+ plane[0].dcdx = y[0] - y[1];
+ plane[1].dcdx = y[1] - y[2];
+ plane[2].dcdx = y[2] - y[3];
+ plane[3].dcdx = y[3] - y[0];
- info.oneoverarea = 1.0f / (dx * dx + dy * dy);
- info.dx = dx;
- info.dy = dy;
- info.v1 = v1;
- info.v2 = v2;
/* Setup parameter interpolants:
*/
- setup_line_coefficients( setup, line, &info);
+ info.a0 = GET_A0(&line->inputs);
+ info.dadx = GET_DADX(&line->inputs);
+ info.dady = GET_DADY(&line->inputs);
+ setup_line_coefficients(setup, &info);
- line->inputs.facing = 1.0F;
- line->inputs.state = setup->fs.stored;
+ line->inputs.frontfacing = TRUE;
+ line->inputs.disable = FALSE;
+ line->inputs.opaque = FALSE;
+ line->inputs.layer = layer;
for (i = 0; i < 4; i++) {
- struct lp_rast_plane *plane = &line->plane[i];
/* half-edge constants, will be interated over the whole render
* target.
*/
- plane->c = plane->dcdx * x[i] - plane->dcdy * y[i];
+ plane[i].c = plane[i].dcdx * x[i] - plane[i].dcdy * y[i];
/* correct for top-left vs. bottom-left fill convention.
- *
- * note that we're overloading gl_rasterization_rules to mean
- * both (0.5,0.5) pixel centers *and* bottom-left filling
- * convention.
- *
- * GL actually has a top-left filling convention, but GL's
- * notion of "top" differs from gallium's...
- *
- * Also, sometimes (in FBO cases) GL will render upside down
- * to its usual method, in which case it will probably want
- * to use the opposite, top-left convention.
*/
- if (plane->dcdx < 0) {
+ if (plane[i].dcdx < 0) {
/* both fill conventions want this - adjust for left edges */
- plane->c++;
+ plane[i].c++;
}
- else if (plane->dcdx == 0) {
+ else if (plane[i].dcdx == 0) {
if (setup->pixel_offset == 0) {
/* correct for top-left fill convention:
*/
- if (plane->dcdy > 0) plane->c++;
+ if (plane[i].dcdy > 0) plane[i].c++;
}
else {
/* correct for bottom-left fill convention:
*/
- if (plane->dcdy < 0) plane->c++;
+ if (plane[i].dcdy < 0) plane[i].c++;
}
}
- plane->dcdx *= FIXED_ONE;
- plane->dcdy *= FIXED_ONE;
+ plane[i].dcdx *= FIXED_ONE;
+ plane[i].dcdy *= FIXED_ONE;
/* find trivial reject offsets for each edge for a single-pixel
* sized block. These will be scaled up at each recursive level to
* match the active blocksize. Scaling in this way works best if
* the blocks are square.
*/
- plane->eo = 0;
- if (plane->dcdx < 0) plane->eo -= plane->dcdx;
- if (plane->dcdy > 0) plane->eo += plane->dcdy;
-
- /* Calculate trivial accept offsets from the above.
- */
- plane->ei = plane->dcdy - plane->dcdx - plane->eo;
+ plane[i].eo = 0;
+ if (plane[i].dcdx < 0) plane[i].eo -= plane[i].dcdx;
+ if (plane[i].dcdy > 0) plane[i].eo += plane[i].dcdy;
}
* these planes elsewhere.
*/
if (nr_planes == 8) {
- line->plane[4].dcdx = -1;
- line->plane[4].dcdy = 0;
- line->plane[4].c = 1-bbox.x0;
- line->plane[4].ei = 0;
- line->plane[4].eo = 1;
-
- line->plane[5].dcdx = 1;
- line->plane[5].dcdy = 0;
- line->plane[5].c = bbox.x1+1;
- line->plane[5].ei = -1;
- line->plane[5].eo = 0;
-
- line->plane[6].dcdx = 0;
- line->plane[6].dcdy = 1;
- line->plane[6].c = 1-bbox.y0;
- line->plane[6].ei = 0;
- line->plane[6].eo = 1;
-
- line->plane[7].dcdx = 0;
- line->plane[7].dcdy = -1;
- line->plane[7].c = bbox.y1+1;
- line->plane[7].ei = -1;
- line->plane[7].eo = 0;
+ const struct u_rect *scissor =
+ &setup->scissors[scissor_index];
+
+ 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;
}
- lp_setup_bin_triangle(setup, line, &bbox, nr_planes);
+ return lp_setup_bin_triangle(setup, line, &bbox, nr_planes, scissor_index);
}
-
+
+
+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 ))
+ return;
+ }
+}
+
void lp_setup_choose_line( struct lp_setup_context *setup )
{
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