diff options
author | Keith Whitwell <keith@tungstengraphics.com> | 2008-05-25 11:25:09 +0100 |
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committer | Keith Whitwell <keith@tungstengraphics.com> | 2008-05-25 11:25:09 +0100 |
commit | 584a3dcf8e4042cc1a5d48d83ea63d0a3c9706c1 (patch) | |
tree | 1f4ac0ccb0ec421a42ca301c6eb215dcbb0a527d /src/gallium | |
parent | a6fca8acb5e8ce0e5e6ce91a524e2bb4c180d3ac (diff) |
draw: add viewport support to generic vs varient code
Diffstat (limited to 'src/gallium')
-rw-r--r-- | src/gallium/auxiliary/draw/draw_vs_varient.c | 43 |
1 files changed, 41 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vs_varient.c b/src/gallium/auxiliary/draw/draw_vs_varient.c index f6f621a748..c15c648527 100644 --- a/src/gallium/auxiliary/draw/draw_vs_varient.c +++ b/src/gallium/auxiliary/draw/draw_vs_varient.c @@ -44,7 +44,7 @@ struct draw_vs_varient_generic { struct draw_vs_varient base; - + struct pipe_viewport_state viewport; struct draw_vertex_shader *shader; struct draw_context *draw; @@ -87,6 +87,30 @@ static void vsvg_set_input( struct draw_vs_varient *varient, } +/* Mainly for debug at this stage: + */ +static void do_viewport( struct draw_vs_varient_generic *vsvg, + unsigned count, + void *output_buffer ) +{ + char *ptr = (char *)output_buffer; + const float *scale = vsvg->viewport.scale; + const float *trans = vsvg->viewport.translate; + unsigned stride = vsvg->base.key.output_stride; + unsigned j; + + for (j = 0; j < count; j++, ptr += stride) { + float *data = (float *)ptr; + float w = 1.0f / data[3]; + + data[0] = data[0] * w * scale[0] + trans[0]; + data[1] = data[1] * w * scale[1] + trans[1]; + data[2] = data[2] * w * scale[2] + trans[2]; + data[3] = w; + } +} + + static void vsvg_run_elts( struct draw_vs_varient *varient, const unsigned *elts, unsigned count, @@ -112,6 +136,12 @@ static void vsvg_run_elts( struct draw_vs_varient *varient, vsvg->base.key.output_stride, vsvg->base.key.output_stride); + if (vsvg->base.key.viewport) + do_viewport( vsvg, + count, + output_buffer ); + + //if (!vsvg->already_in_emit_format) vsvg->emit->set_buffer( vsvg->emit, @@ -152,6 +182,12 @@ static void vsvg_run_linear( struct draw_vs_varient *varient, vsvg->base.key.output_stride, vsvg->base.key.output_stride); + if (vsvg->base.key.viewport) + do_viewport( vsvg, + count, + output_buffer ); + + //if (!vsvg->already_in_emit_format) vsvg->emit->set_buffer( vsvg->emit, 0, @@ -171,6 +207,9 @@ static void vsvg_run_linear( struct draw_vs_varient *varient, static void vsvg_set_viewport( struct draw_vs_varient *varient, const struct pipe_viewport_state *viewport ) { + struct draw_vs_varient_generic *vsvg = (struct draw_vs_varient_generic *)varient; + + vsvg->viewport = *viewport; } static void vsvg_destroy( struct draw_vs_varient *varient ) @@ -185,7 +224,7 @@ struct draw_vs_varient *draw_vs_varient_generic( struct draw_vertex_shader *vs, unsigned i; struct translate_key fetch, emit; - if (key->viewport || key->clip) + if (key->clip) return NULL; struct draw_vs_varient_generic *vsvg = CALLOC_STRUCT( draw_vs_varient_generic ); |