diff options
Diffstat (limited to 'src/gallium/auxiliary/draw')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pipe.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pipe.c b/src/gallium/auxiliary/draw/draw_pipe.c index 1c6d657297c..c9fd1a793ae 100644 --- 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, @@ -157,7 +164,10 @@ 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 | \ @@ -175,14 +185,14 @@ static void do_triangle( struct draw_context *draw, #define TRIANGLE(flags,i0,i1,i2) \ do_triangle( draw, \ - elts[i0], /* flags */ \ + elts[i0], /* flags */ \ verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \ verts + stride * elts[i1], \ verts + stride * elts[i2]) #define LINE(flags,i0,i1) \ do_line( draw, \ - elts[i0], \ + elts[i0], \ verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \ verts + stride * elts[i1]) @@ -213,7 +223,9 @@ static void do_triangle( struct draw_context *draw, -/* Code to run the pipeline on a fairly arbitary collection of vertices. +/** + * 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 @@ -243,6 +255,12 @@ void draw_pipeline_run( struct draw_context *draw, 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 | \ @@ -293,6 +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, |