diff options
Diffstat (limited to 'src/mesa/state_tracker/st_draw.c')
| -rw-r--r-- | src/mesa/state_tracker/st_draw.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_draw.c b/src/mesa/state_tracker/st_draw.c index 7fcc4d8e65..1806a1888b 100644 --- a/src/mesa/state_tracker/st_draw.c +++ b/src/mesa/state_tracker/st_draw.c @@ -310,6 +310,35 @@ st_draw_vertices(GLcontext *ctx, unsigned prim, } +/** + * Set the (private) draw module's post-transformed vertex format when in + * GL_SELECT or GL_FEEDBACK mode. + */ +static void +set_feedback_vertex_format(GLcontext *ctx) +{ + struct st_context *st = ctx->st; + uint attrs[PIPE_MAX_SHADER_OUTPUTS]; + interp_mode interp[PIPE_MAX_SHADER_OUTPUTS]; + GLuint n, i; + + if (ctx->RenderMode == GL_FEEDBACK) { + /* emit all attribs (pos, color, texcoord) as GLfloat[4] */ + n = st->state.vs->state.num_outputs; + for (i = 0; i < n; i++) { + attrs[i] = FORMAT_4F; + interp[i] = INTERP_NONE; + } + } + else { + assert(ctx->RenderMode == GL_SELECT); + n = 1; + attrs[0] = FORMAT_4F; + interp[0] = INTERP_NONE; + } + + draw_set_vertex_attributes(st->draw, attrs, interp, n); +} /** @@ -359,6 +388,7 @@ st_feedback_draw_vbo(GLcontext *ctx, draw_set_clip_state(draw, &st->state.clip); draw_set_rasterizer_state(draw, &st->state.rasterizer->state); draw_bind_vertex_shader(draw, st->state.vs->data); + set_feedback_vertex_format(ctx); /* loop over TGSI shader inputs to determine vertex buffer * and attribute info |