From: Zack Rusin Date: Fri, 8 Mar 2013 03:15:03 +0000 (-0800) Subject: draw/gs: Correctly iterate the emitted primitives X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7295fad2043e2cb09fd1c0b98357464062478912;p=mesa.git draw/gs: Correctly iterate the emitted primitives We were assuming that each emitted primitive had the same number of vertices. That is incorrect. Emitted primitives can have arbirtrary number of vertices. Simply increment index on iteration to fix it. Signed-off-by: Zack Rusin Reviewed-by: José Fonseca --- diff --git a/src/gallium/auxiliary/draw/draw_gs.c b/src/gallium/auxiliary/draw/draw_gs.c index 99335af12d3..e605965fd87 100644 --- a/src/gallium/auxiliary/draw/draw_gs.c +++ b/src/gallium/auxiliary/draw/draw_gs.c @@ -172,6 +172,7 @@ draw_geometry_fetch_outputs(struct draw_geometry_shader *shader, { struct tgsi_exec_machine *machine = shader->machine; unsigned prim_idx, j, slot; + unsigned current_idx = 0; float (*output)[4]; output = *p_output; @@ -184,9 +185,8 @@ draw_geometry_fetch_outputs(struct draw_geometry_shader *shader, shader->primitive_lengths[prim_idx + shader->emitted_primitives] = machine->Primitives[prim_idx]; shader->emitted_vertices += num_verts_per_prim; - for (j = 0; j < num_verts_per_prim; j++) { - int idx = (prim_idx * num_verts_per_prim + j) * - shader->info.num_outputs; + for (j = 0; j < num_verts_per_prim; j++, current_idx++) { + int idx = current_idx * shader->info.num_outputs; #ifdef DEBUG_OUTPUTS debug_printf("%d) Output vert:\n", idx / shader->info.num_outputs); #endif @@ -208,7 +208,7 @@ draw_geometry_fetch_outputs(struct draw_geometry_shader *shader, } } *p_output = output; - shader->emitted_primitives += num_primitives; + shader->emitted_primitives += num_primitives; } /*#define DEBUG_INPUTS 1*/