X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fgallium%2Fauxiliary%2Fdraw%2Fdraw_pipe_wide_point.c;h=49034ae86a2de3160e027e3400191f9f51850905;hb=9205a871e75f66de3501519018e76b6f49d2cce8;hp=df92e3f2d06fff6c96db162406cc73a2d1b3832c;hpb=7fd6cd9af31a6b02564359f820d478ceb970fc7d;p=mesa.git

diff --git a/src/gallium/auxiliary/draw/draw_pipe_wide_point.c b/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
index df92e3f2d06..49034ae86a2 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
@@ -28,7 +28,8 @@
 /* Authors:  Keith Whitwell <keith@tungstengraphics.com>
  */
 
-#include "pipe/p_util.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
 #include "pipe/p_defines.h"
 #include "pipe/p_shader_tokens.h"
 #include "draw_vs.h"
@@ -50,6 +51,8 @@ struct widepoint_stage {
    uint num_texcoords;
 
    int psize_slot;
+
+   int point_coord_fs_input;  /**< input for pointcoord (and fog) */
 };
 
 
@@ -84,6 +87,13 @@ static void set_texcoords(const struct widepoint_stage *wide,
          v->data[j][3] = tc[3];
       }
    }
+
+   if (wide->point_coord_fs_input >= 0) {
+      /* put gl_PointCoord into extra vertex output's zw components */
+      uint k = wide->stage.draw->extra_vp_outputs.slot;
+      v->data[k][2] = tc[0];
+      v->data[k][3] = tc[1];
+   }
 }
 
 
@@ -96,6 +106,7 @@ static void widepoint_point( struct draw_stage *stage,
                              struct prim_header *header )
 {
    const struct widepoint_stage *wide = widepoint_stage(stage);
+   const unsigned pos = stage->draw->vs.position_output;
    const boolean sprite = (boolean) stage->draw->rasterizer->point_sprite;
    float half_size;
    float left_adj, right_adj, bot_adj, top_adj;
@@ -108,10 +119,10 @@ static void widepoint_point( struct draw_stage *stage,
    struct vertex_header *v2 = dup_vert(stage, header->v[0], 2);
    struct vertex_header *v3 = dup_vert(stage, header->v[0], 3);
 
-   float *pos0 = v0->data[0];
-   float *pos1 = v1->data[0];
-   float *pos2 = v2->data[0];
-   float *pos3 = v3->data[0];
+   float *pos0 = v0->data[pos];
+   float *pos1 = v1->data[pos];
+   float *pos2 = v2->data[pos];
+   float *pos3 = v3->data[pos];
 
    /* point size is either per-vertex or fixed size */
    if (wide->psize_slot >= 0) {
@@ -207,6 +218,18 @@ static void widepoint_first_point( struct draw_stage *stage,
          }
       }
       wide->num_texcoords = j;
+
+      /* find fragment shader PointCoord/Fog input */
+      wide->point_coord_fs_input = 0; /* XXX fix this! */
+
+      /* setup extra vp output (point coord implemented as a texcoord) */
+      draw->extra_vp_outputs.semantic_name = TGSI_SEMANTIC_GENERIC;
+      draw->extra_vp_outputs.semantic_index = 0;
+      draw->extra_vp_outputs.slot = draw->vs.num_vs_outputs;
+   }
+   else {
+      wide->point_coord_fs_input = -1;
+      draw->extra_vp_outputs.slot = 0;
    }
 
    wide->psize_slot = -1;
@@ -256,6 +279,7 @@ struct draw_stage *draw_wide_point_stage( struct draw_context *draw )
       goto fail;
 
    wide->stage.draw = draw;
+   wide->stage.name = "wide-point";
    wide->stage.next = NULL;
    wide->stage.point = widepoint_first_point;
    wide->stage.line = draw_pipe_passthrough_line;