gallium: remove TGSI_SEMANTIC_VERTICES

[mesa.git] / src / gallium / auxiliary / draw / draw_pipe_offset.c

diff --git a/src/gallium/auxiliary/draw/draw_pipe_offset.c b/src/gallium/auxiliary/draw/draw_pipe_offset.c
index ea6de8c571eb1e203c9085352eaa8376705afa7c..e829492423e3b0e9275a0f13c498ebf9acc4858c 100644 (file)
--- a/src/gallium/auxiliary/draw/draw_pipe_offset.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_offset.c
@@ -32,7 +32,8 @@
  * \author  Brian Paul
  */
 
-#include "pipe/p_util.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
 #include "draw_pipe.h"
 
 
@@ -62,14 +63,15 @@ static INLINE struct offset_stage *offset_stage( struct draw_stage *stage )
 static void do_offset_tri( struct draw_stage *stage,
                           struct prim_header *header )
 {
+   const unsigned pos = draw_current_shader_position_output(stage->draw);
    struct offset_stage *offset = offset_stage(stage);   
    float inv_det = 1.0f / header->det;
 
    /* Window coords:
     */
-   float *v0 = header->v[0]->data[0];
-   float *v1 = header->v[1]->data[0];
-   float *v2 = header->v[2]->data[0];
+   float *v0 = header->v[0]->data[pos];
+   float *v1 = header->v[1]->data[pos];
+   float *v2 = header->v[2]->data[pos];
 
    /* edge vectors e = v0 - v2, f = v1 - v2 */
    float ex = v0[0] - v2[0];
@@ -83,8 +85,8 @@ static void do_offset_tri( struct draw_stage *stage,
    float a = ey*fz - ez*fy;
    float b = ez*fx - ex*fz;
 
-   float dzdx = FABSF(a * inv_det);
-   float dzdy = FABSF(b * inv_det);
+   float dzdx = fabsf(a * inv_det);
+   float dzdy = fabsf(b * inv_det);
 
    float zoffset = offset->units + MAX2(dzdx, dzdy) * offset->scale;
 
@@ -120,9 +122,8 @@ static void offset_first_tri( struct draw_stage *stage,
                              struct prim_header *header )
 {
    struct offset_stage *offset = offset_stage(stage);
-   float mrd = 1.0f / 65535.0f; /* XXX this depends on depthbuffer bits! */
 
-   offset->units = stage->draw->rasterizer->offset_units * mrd;
+   offset->units = (float) (stage->draw->rasterizer->offset_units * stage->draw->mrd);
    offset->scale = stage->draw->rasterizer->offset_scale;
 
    stage->tri = offset_tri;
@@ -165,6 +166,7 @@ struct draw_stage *draw_offset_stage( struct draw_context *draw )
    draw_alloc_temp_verts( &offset->stage, 3 );
 
    offset->stage.draw = draw;
+   offset->stage.name = "offset";
    offset->stage.next = NULL;
    offset->stage.point = draw_pipe_passthrough_point;
    offset->stage.line = draw_pipe_passthrough_line;