diff options
Diffstat (limited to 'src/gallium/drivers/nouveau/nv50/nv50_push.c')
| -rw-r--r-- | src/gallium/drivers/nouveau/nv50/nv50_push.c | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_push.c b/src/gallium/drivers/nouveau/nv50/nv50_push.c index f31eaa0e314..cbef95d07f6 100644 --- a/src/gallium/drivers/nouveau/nv50/nv50_push.c +++ b/src/gallium/drivers/nouveau/nv50/nv50_push.c @@ -24,6 +24,10 @@ struct push_context { struct translate *translate; bool primitive_restart; + + bool need_vertex_id; + int32_t index_bias; + uint32_t prim; uint32_t restart_index; uint32_t instance_id; @@ -74,6 +78,11 @@ emit_vertices_i08(struct push_context *ctx, unsigned start, unsigned count) size = ctx->vertex_words * nr; + if (unlikely(ctx->need_vertex_id)) { + BEGIN_NV04(ctx->push, NV84_3D(VERTEX_ID_BASE), 1); + PUSH_DATA (ctx->push, *elts + ctx->index_bias); + } + BEGIN_NI04(ctx->push, NV50_3D(VERTEX_DATA), size); ctx->translate->run_elts8(ctx->translate, elts, nr, 0, ctx->instance_id, @@ -107,6 +116,11 @@ emit_vertices_i16(struct push_context *ctx, unsigned start, unsigned count) size = ctx->vertex_words * nr; + if (unlikely(ctx->need_vertex_id)) { + BEGIN_NV04(ctx->push, NV84_3D(VERTEX_ID_BASE), 1); + PUSH_DATA (ctx->push, *elts + ctx->index_bias); + } + BEGIN_NI04(ctx->push, NV50_3D(VERTEX_DATA), size); ctx->translate->run_elts16(ctx->translate, elts, nr, 0, ctx->instance_id, @@ -140,6 +154,11 @@ emit_vertices_i32(struct push_context *ctx, unsigned start, unsigned count) size = ctx->vertex_words * nr; + if (unlikely(ctx->need_vertex_id)) { + BEGIN_NV04(ctx->push, NV84_3D(VERTEX_ID_BASE), 1); + PUSH_DATA (ctx->push, *elts + ctx->index_bias); + } + BEGIN_NI04(ctx->push, NV50_3D(VERTEX_DATA), size); ctx->translate->run_elts(ctx->translate, elts, nr, 0, ctx->instance_id, @@ -161,10 +180,18 @@ emit_vertices_i32(struct push_context *ctx, unsigned start, unsigned count) static void emit_vertices_seq(struct push_context *ctx, unsigned start, unsigned count) { + uint32_t elts = 0; + while (count) { unsigned push = MIN2(count, ctx->packet_vertex_limit); unsigned size = ctx->vertex_words * push; + if (unlikely(ctx->need_vertex_id)) { + /* For non-indexed draws, gl_VertexID goes up after each vertex. */ + BEGIN_NV04(ctx->push, NV84_3D(VERTEX_ID_BASE), 1); + PUSH_DATA (ctx->push, elts++); + } + BEGIN_NI04(ctx->push, NV50_3D(VERTEX_DATA), size); ctx->translate->run(ctx->translate, start, push, 0, ctx->instance_id, @@ -216,7 +243,14 @@ nv50_push_vbo(struct nv50_context *nv50, const struct pipe_draw_info *info) ctx.push = nv50->base.pushbuf; ctx.translate = nv50->vertex->translate; - ctx.packet_vertex_limit = nv50->vertex->packet_vertex_limit; + + ctx.need_vertex_id = nv50->screen->base.class_3d >= NV84_3D_CLASS && + nv50->vertprog->vp.need_vertex_id && (nv50->vertex->num_elements < 32); + ctx.index_bias = info->index_bias; + + /* For indexed draws, gl_VertexID must be emitted for every vertex. */ + ctx.packet_vertex_limit = + ctx.need_vertex_id ? 1 : nv50->vertex->packet_vertex_limit; ctx.vertex_words = nv50->vertex->vertex_size; assert(nv50->num_vtxbufs <= PIPE_MAX_ATTRIBS); @@ -307,4 +341,10 @@ nv50_push_vbo(struct nv50_context *nv50, const struct pipe_draw_info *info) ctx.instance_id++; ctx.prim |= NV50_3D_VERTEX_BEGIN_GL_INSTANCE_NEXT; } + + if (unlikely(ctx.need_vertex_id)) { + /* Reset gl_VertexID to prevent future indexed draws to be confused. */ + BEGIN_NV04(ctx.push, NV84_3D(VERTEX_ID_BASE), 1); + PUSH_DATA (ctx.push, nv50->state.index_bias); + } } |