Merge branch 'arb_half_float_vertex'

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

diff --git a/src/gallium/auxiliary/draw/draw_pipe.c b/src/gallium/auxiliary/draw/draw_pipe.c
index 2e3f5b2fc07f6ffcbf9c5cf70f208e89ae2eebf8..11d6485dcf074021eb5b67292b54a20871387dc5 100644 (file)
--- a/src/gallium/auxiliary/draw/draw_pipe.c
+++ b/src/gallium/auxiliary/draw/draw_pipe.c
@@ -106,10 +106,9 @@ void draw_pipeline_destroy( struct draw_context *draw )
 
 
 
-
-
-
-
+/**
+ * Build primitive to render a point with vertex at v0.
+ */
 static void do_point( struct draw_context *draw,
                      const char *v0 )
 {
@@ -123,6 +122,10 @@ static void do_point( struct draw_context *draw,
 }
 
 
+/**
+ * Build primitive to render a line with vertices at v0, v1.
+ * \param flags  bitmask of DRAW_PIPE_EDGE_x, DRAW_PIPE_RESET_STIPPLE
+ */
 static void do_line( struct draw_context *draw,
                      ushort flags,
                     const char *v0,
@@ -139,6 +142,10 @@ static void do_line( struct draw_context *draw,
 }
 
 
+/**
+ * Build primitive to render a triangle with vertices at v0, v1, v2.
+ * \param flags  bitmask of DRAW_PIPE_EDGE_x, DRAW_PIPE_RESET_STIPPLE
+ */
 static void do_triangle( struct draw_context *draw,
                          ushort flags,
                         char *v0,
@@ -157,9 +164,68 @@ static void do_triangle( struct draw_context *draw,
 }
 
 
+/*
+ * Set up macros for draw_pt_decompose.h template code.
+ * This code uses vertex indexes / elements.
+ */
+#define QUAD(i0,i1,i2,i3)                       \
+   do_triangle( draw,                           \
+                ( DRAW_PIPE_RESET_STIPPLE |     \
+                  DRAW_PIPE_EDGE_FLAG_0 |       \
+                  DRAW_PIPE_EDGE_FLAG_2 ),      \
+                verts + stride * elts[i0],      \
+                verts + stride * elts[i1],      \
+                verts + stride * elts[i3]);     \
+   do_triangle( draw,                           \
+                ( DRAW_PIPE_EDGE_FLAG_0 |       \
+                  DRAW_PIPE_EDGE_FLAG_1 ),      \
+                verts + stride * elts[i1],      \
+                verts + stride * elts[i2],      \
+                verts + stride * elts[i3])
+
+#define TRIANGLE(flags,i0,i1,i2)                                        \
+   do_triangle( draw,                                                   \
+                elts[i0],  /* flags */                                  \
+                verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK),     \
+                verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK),     \
+                verts + stride * (elts[i2] & ~DRAW_PIPE_FLAG_MASK) );
+
+#define LINE(flags,i0,i1)                                       \
+   do_line( draw,                                               \
+            elts[i0],                                           \
+            verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \
+            verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK) );
 
+#define POINT(i0)                               \
+   do_point( draw,                              \
+             verts + stride * elts[i0] )
+
+#define FUNC pipe_run
+#define ARGS                                    \
+    struct draw_context *draw,                  \
+    unsigned prim,                              \
+    struct vertex_header *vertices,             \
+    unsigned stride,                            \
+    const ushort *elts
 
-/* Code to run the pipeline on a fairly arbitary collection of vertices.
+#define LOCAL_VARS                                           \
+   char *verts = (char *)vertices;                           \
+   boolean flatfirst = (draw->rasterizer->flatshade &&       \
+                        draw->rasterizer->flatshade_first);  \
+   unsigned i;                                               \
+   ushort flags
+
+#define FLUSH
+
+#include "draw_pt_decompose.h"
+#undef ARGS
+#undef LOCAL_VARS
+
+
+
+/**
+ * Code to run the pipeline on a fairly arbitary collection of vertices.
+ * For drawing indexed primitives.
  *
  * Vertex headers must be pre-initialized with the
  * UNDEFINED_VERTEX_ID, this code will cause that id to become
@@ -178,39 +244,23 @@ void draw_pipeline_run( struct draw_context *draw,
                         unsigned count )
 {
    char *verts = (char *)vertices;
-   unsigned i;
 
    draw->pipeline.verts = verts;
    draw->pipeline.vertex_stride = stride;
    draw->pipeline.vertex_count = vertex_count;
    
-   switch (prim) {
-   case PIPE_PRIM_POINTS:
-      for (i = 0; i < count; i++) 
-         do_point( draw, 
-                   verts + stride * elts[i] );
-      break;
-   case PIPE_PRIM_LINES:
-      for (i = 0; i+1 < count; i += 2) 
-         do_line( draw, 
-                  elts[i+0],  /* flags */
-                  verts + stride * (elts[i+0] & ~DRAW_PIPE_FLAG_MASK),
-                  verts + stride * elts[i+1]);
-      break;
-   case PIPE_PRIM_TRIANGLES:
-      for (i = 0; i+2 < count; i += 3)
-         do_triangle( draw, 
-                      elts[i+0],  /* flags */
-                      verts + stride * (elts[i+0] & ~DRAW_PIPE_FLAG_MASK),
-                      verts + stride * elts[i+1],
-                      verts + stride * elts[i+2]);
-      break;
-   }
+   pipe_run(draw, prim, vertices, stride, elts, count);
    
    draw->pipeline.verts = NULL;
    draw->pipeline.vertex_count = 0;
 }
 
+
+
+/*
+ * Set up macros for draw_pt_decompose.h template code.
+ * This code is for non-indexed rendering (no elts).
+ */
 #define QUAD(i0,i1,i2,i3)                                        \
    do_triangle( draw,                                            \
                 ( DRAW_PIPE_RESET_STIPPLE |                      \
@@ -261,6 +311,10 @@ void draw_pipeline_run( struct draw_context *draw,
 
 #include "draw_pt_decompose.h"
 
+
+/*
+ * For drawing non-indexed primitives.
+ */
 void draw_pipeline_run_linear( struct draw_context *draw,
                                unsigned prim,
                                struct vertex_header *vertices,