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-rw-r--r--src/mesa/pipe/draw/draw_wide_prims.c202
1 files changed, 91 insertions, 111 deletions
diff --git a/src/mesa/pipe/draw/draw_wide_prims.c b/src/mesa/pipe/draw/draw_wide_prims.c
index 20151f1538..8e1c4a8ae7 100644
--- a/src/mesa/pipe/draw/draw_wide_prims.c
+++ b/src/mesa/pipe/draw/draw_wide_prims.c
@@ -27,6 +27,7 @@
/* Authors: Keith Whitwell <keith@tungstengraphics.com>
*/
+
#include "pipe/p_util.h"
#include "pipe/p_defines.h"
#include "draw_private.h"
@@ -36,8 +37,6 @@
struct wide_stage {
struct draw_stage stage;
- unsigned hw_data_offset;
-
float half_line_width;
float half_point_size;
};
@@ -50,54 +49,50 @@ static INLINE struct wide_stage *wide_stage( struct draw_stage *stage )
}
-
-
-
-static void tri( struct draw_stage *next,
- struct vertex_header *v0,
- struct vertex_header *v1,
- struct vertex_header *v2 )
+static void passthrough_point( struct draw_stage *stage,
+ struct prim_header *header )
{
- struct prim_header tmp;
+ stage->next->point( stage->next, header );
+}
- tmp.det = 1.0;
- tmp.v[0] = v0;
- tmp.v[1] = v1;
- tmp.v[2] = v2;
- next->tri( next, &tmp );
+static void passthrough_line( struct draw_stage *stage,
+ struct prim_header *header )
+{
+ stage->next->line(stage->next, header);
}
-static void quad( struct draw_stage *next,
- struct vertex_header *v0,
- struct vertex_header *v1,
- struct vertex_header *v2,
- struct vertex_header *v3 )
+static void passthrough_tri( struct draw_stage *stage,
+ struct prim_header *header )
{
- /* XXX: Need to disable tri-stipple
- */
- tri( next, v0, v1, v3 );
- tri( next, v2, v0, v3 );
+ stage->next->tri(stage->next, header);
}
+
+/**
+ * Draw a wide line by drawing a quad (two triangles).
+ * XXX still need line stipple.
+ * XXX need to disable polygon stipple.
+ */
static void wide_line( struct draw_stage *stage,
struct prim_header *header )
{
- struct wide_stage *wide = wide_stage(stage);
- unsigned hw_data_offset = wide->hw_data_offset;
- float half_width = wide->half_line_width;
+ const struct wide_stage *wide = wide_stage(stage);
+ const float half_width = wide->half_line_width;
+
+ struct prim_header tri;
struct vertex_header *v0 = dup_vert(stage, header->v[0], 0);
struct vertex_header *v1 = dup_vert(stage, header->v[0], 1);
struct vertex_header *v2 = dup_vert(stage, header->v[1], 2);
struct vertex_header *v3 = dup_vert(stage, header->v[1], 3);
- float *pos0 = (float *)&(v0->data[hw_data_offset]);
- float *pos1 = (float *)&(v1->data[hw_data_offset]);
- float *pos2 = (float *)&(v2->data[hw_data_offset]);
- float *pos3 = (float *)&(v3->data[hw_data_offset]);
-
- float dx = FABSF(pos0[0] - pos2[0]);
- float dy = FABSF(pos0[1] - pos2[1]);
+ float *pos0 = v0->data[0];
+ float *pos1 = v1->data[0];
+ float *pos2 = v2->data[0];
+ float *pos3 = v3->data[0];
+
+ const float dx = FABSF(pos0[0] - pos2[0]);
+ const float dy = FABSF(pos0[1] - pos2[1]);
if (dx > dy) {
pos0[1] -= half_width;
@@ -112,81 +107,63 @@ static void wide_line( struct draw_stage *stage,
pos3[0] += half_width;
}
- quad( stage->next, v0, v1, v2, v3 );
+ tri.det = header->det; /* only the sign matters */
+ tri.v[0] = v0;
+ tri.v[1] = v2;
+ tri.v[2] = v3;
+ stage->next->tri( stage->next, &tri );
+
+ tri.v[0] = v0;
+ tri.v[1] = v3;
+ tri.v[2] = v1;
+ stage->next->tri( stage->next, &tri );
}
-static void make_wide_point( struct draw_stage *stage,
- const struct vertex_header *vin,
- struct vertex_header *v[] )
+static void wide_point( struct draw_stage *stage,
+ struct prim_header *header )
{
- struct wide_stage *wide = wide_stage(stage);
- unsigned hw_data_offset = wide->hw_data_offset;
+ const struct wide_stage *wide = wide_stage(stage);
float half_size = wide->half_point_size;
- float *pos[4];
-
- v[0] = dup_vert(stage, vin, 0);
- pos[0] = (float *)&(v[0]->data[hw_data_offset]);
- /* Probably not correct:
- */
- pos[0][0] = pos[0][0];
- pos[0][1] = pos[0][1] - .5;
+ struct prim_header tri;
- v[1] = dup_vert(stage, v[0], 1);
- v[2] = dup_vert(stage, v[0], 2);
- v[3] = dup_vert(stage, v[0], 3);
-
- pos[1] = (float *)&(v[1]->data[hw_data_offset]);
- pos[2] = (float *)&(v[2]->data[hw_data_offset]);
- pos[3] = (float *)&(v[3]->data[hw_data_offset]);
-
- _mesa_printf("point %f %f, %f\n", pos[0][0], pos[0][1], half_size);
+ /* four dups of original vertex */
+ struct vertex_header *v0 = dup_vert(stage, header->v[0], 0);
+ struct vertex_header *v1 = dup_vert(stage, header->v[0], 1);
+ struct vertex_header *v2 = dup_vert(stage, header->v[0], 2);
+ struct vertex_header *v3 = dup_vert(stage, header->v[0], 3);
- pos[0][0] -= half_size;
- pos[0][1] -= half_size;
+ float *pos0 = v0->data[0];
+ float *pos1 = v1->data[0];
+ float *pos2 = v2->data[0];
+ float *pos3 = v3->data[0];
- pos[1][0] -= half_size;
- pos[1][1] += half_size;
+ pos0[0] -= half_size;
+ pos0[1] -= half_size;
- pos[2][0] += half_size;
- pos[2][1] -= half_size;
+ pos1[0] -= half_size;
+ pos1[1] += half_size;
- pos[3][0] += half_size;
- pos[3][1] += half_size;
-
-// quad( stage->next, v[0], v[1], v[2], v[3] );
-}
+ pos2[0] += half_size;
+ pos2[1] -= half_size;
-static void wide_point( struct draw_stage *stage,
- struct prim_header *header )
-{
- struct vertex_header *v[4];
- make_wide_point(stage, header->v[0], v );
- quad( stage->next, v[0], v[1], v[2], v[3] );
-}
+ pos3[0] += half_size;
+ pos3[1] += half_size;
+ tri.det = header->det; /* only the sign matters */
+ tri.v[0] = v0;
+ tri.v[1] = v2;
+ tri.v[2] = v3;
+ stage->next->tri( stage->next, &tri );
-static void set_texcoord( struct vertex_fetch *vf,
- struct vertex_header *v,
- const float *val )
-{
- GLubyte *dst = (GLubyte *)v;
- const struct vf_attr *a = vf->attr;
- const unsigned attr_count = vf->attr_count;
- unsigned j;
-
- /* XXX: precompute which attributes need to be set.
- */
- for (j = 1; j < attr_count; j++) {
- if (a[j].attrib >= VF_ATTRIB_TEX0 &&
- a[j].attrib <= VF_ATTRIB_TEX7)
- a[j].insert[4-1]( &a[j], dst + a[j].vertoffset, val );
- }
+ tri.v[0] = v0;
+ tri.v[1] = v3;
+ tri.v[2] = v1;
+ stage->next->tri( stage->next, &tri );
}
-
/* If there are lots of sprite points (and why wouldn't there be?) it
* would probably be more sensible to change hardware setup to
* optimize this rather than doing the whole thing in software like
@@ -195,6 +172,7 @@ static void set_texcoord( struct vertex_fetch *vf,
static void sprite_point( struct draw_stage *stage,
struct prim_header *header )
{
+#if 0
struct vertex_header *v[4];
struct vertex_fetch *vf = stage->pipe->draw->vb.vf;
@@ -204,13 +182,14 @@ static void sprite_point( struct draw_stage *stage,
static const float tex10[4] = { 1, 0, 0, 1 };
make_wide_point(stage, header->v[0], &v[0] );
-
+
set_texcoord( vf, v[0], tex00 );
set_texcoord( vf, v[1], tex01 );
set_texcoord( vf, v[2], tex10 );
set_texcoord( vf, v[3], tex11 );
quad( stage->next, v[0], v[1], v[2], v[3] );
+#endif
}
@@ -218,31 +197,26 @@ static void sprite_point( struct draw_stage *stage,
static void wide_begin( struct draw_stage *stage )
{
struct wide_stage *wide = wide_stage(stage);
- struct clip_context *draw = stage->pipe->draw;
-
- if (draw->vb_state.clipped_prims)
- wide->hw_data_offset = 16;
- else
- wide->hw_data_offset = 0;
+ struct draw_context *draw = stage->draw;
- wide->half_point_size = draw->state.point_size / 2;
- wide->half_line_width = draw->state.line_width / 2;
+ wide->half_point_size = 0.5 * draw->rasterizer->point_size;
+ wide->half_line_width = 0.5 * draw->rasterizer->line_width;
- if (draw->state.line_width != 1.0) {
+ if (draw->rasterizer->line_width != 1.0) {
wide->stage.line = wide_line;
}
else {
- wide->stage.line = clip_passthrough_line;
+ wide->stage.line = passthrough_line;
}
- if (draw->state.point_sprite) {
+ if (0/*draw->state.point_sprite*/) {
wide->stage.point = sprite_point;
}
- else if (draw->state.point_size != 1.0) {
+ else if (draw->rasterizer->point_size != 1.0) {
wide->stage.point = wide_point;
}
else {
- wide->stage.point = clip_passthrough_point;
+ wide->stage.point = passthrough_point;
}
@@ -256,20 +230,26 @@ static void wide_end( struct draw_stage *stage )
stage->next->end( stage->next );
}
-struct draw_stage *clip_pipe_wide( struct clip_pipeline *pipe )
+
+static void draw_reset_stipple_counter( struct draw_stage *stage )
+{
+ stage->next->reset_stipple_counter( stage->next );
+}
+
+struct draw_stage *draw_wide_stage( struct draw_context *draw )
{
struct wide_stage *wide = CALLOC_STRUCT(wide_stage);
- clip_pipe_alloc_tmps( &wide->stage, 4 );
+ draw_alloc_tmps( &wide->stage, 4 );
- wide->stage.pipe = pipe;
+ wide->stage.draw = draw;
wide->stage.next = NULL;
wide->stage.begin = wide_begin;
wide->stage.point = wide_point;
wide->stage.line = wide_line;
- wide->stage.tri = clip_passthrough_tri;
- wide->stage.reset_tmps = clip_pipe_reset_tmps;
+ wide->stage.tri = passthrough_tri;
wide->stage.end = wide_end;
+ wide->stage.reset_stipple_counter = draw_reset_stipple_counter;
return &wide->stage;
}