gallium: fold u_trim_pipe_prim call from st/mesa to drivers

Most drivers don't need it and shouldn't need it because it can't be used
in some cases (indirect draws, primitive restart, count from streamout).

Reviewed-by: Brian Paul <brianp@vmware.com>

src/gallium/drivers/etnaviv/etnaviv_context.c

@@ -149,6 +149,11 @@ etna_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
    uint32_t draw_mode;
    unsigned i;
 
+   if (!info->count_from_stream_output && !info->indirect &&
+       !info->primitive_restart &&
+       !u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
+      return;
+
    if (ctx->vertex_elements == NULL || ctx->vertex_elements->num_elements == 0)
       return; /* Nothing to do */
 

src/gallium/drivers/freedreno/freedreno_draw.c

@@ -65,6 +65,11 @@ fd_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
 	struct pipe_scissor_state *scissor = fd_context_get_scissor(ctx);
 	unsigned i, prims, buffers = 0;
 
+	if (!info->count_from_stream_output && !info->indirect &&
+	    !info->primitive_restart &&
+	    !u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
+		return;
+
 	/* if we supported transform feedback, we'd have to disable this: */
 	if (((scissor->maxx - scissor->minx) *
 			(scissor->maxy - scissor->miny)) == 0) {

src/gallium/drivers/i915/i915_context.c

@@ -37,6 +37,7 @@
 #include "pipe/p_defines.h"
 #include "util/u_inlines.h"
 #include "util/u_memory.h"
+#include "util/u_prim.h"
 #include "util/u_upload_mgr.h"
 #include "pipe/p_screen.h"
 
@@ -57,6 +58,9 @@ i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
    const void *mapped_indices = NULL;
    unsigned i;
 
+   if (!u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
+      return;
+
    /*
     * Ack vs contants here, helps ipers a lot.
     */

src/gallium/drivers/nouveau/nv30/nv30_vbo.c

@@ -25,6 +25,7 @@
 
 #include "util/u_format.h"
 #include "util/u_inlines.h"
+#include "util/u_prim.h"
 #include "translate/translate.h"
 
 #include "nouveau_fence.h"
@@ -550,6 +551,10 @@ nv30_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
    struct nouveau_pushbuf *push = nv30->base.pushbuf;
    int i;
 
+   if (!info->primitive_restart &&
+       !u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
+      return;
+
    /* For picking only a few vertices from a large user buffer, push is better,
     * if index count is larger and we expect repeated vertices, suggest upload.
     */

src/gallium/drivers/r300/r300_render.c

@@ -847,6 +847,9 @@ static void r300_swtcl_draw_vbo(struct pipe_context* pipe,
         return;
     }
 
+    if (!u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
+       return;
+
     r300_update_derived_state(r300);
 
     draw_vbo(r300->draw, info);

src/gallium/drivers/swr/swr_draw.cpp

@@ -39,6 +39,11 @@ swr_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
 {
    struct swr_context *ctx = swr_context(pipe);
 
+   if (!info->count_from_stream_output && !info->indirect &&
+       !info->primitive_restart &&
+       !u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
+      return;
+
    if (!swr_check_render_cond(pipe))
       return;
 

src/gallium/drivers/vc4/vc4_draw.c

@@ -283,6 +283,11 @@ vc4_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
 {
         struct vc4_context *vc4 = vc4_context(pctx);
 
+	if (!info->count_from_stream_output && !info->indirect &&
+	    !info->primitive_restart &&
+	    !u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
+		return;
+
         if (info->mode >= PIPE_PRIM_QUADS) {
                 util_primconvert_save_index_buffer(vc4->primconvert, &vc4->indexbuf);
                 util_primconvert_save_rasterizer_state(vc4->primconvert, &vc4->rasterizer->base);

src/gallium/drivers/virgl/virgl_context.c

@@ -30,6 +30,7 @@
 #include "util/u_inlines.h"
 #include "util/u_memory.h"
 #include "util/u_format.h"
+#include "util/u_prim.h"
 #include "util/u_transfer.h"
 #include "util/u_helpers.h"
 #include "util/slab.h"
@@ -592,6 +593,11 @@ static void virgl_draw_vbo(struct pipe_context *ctx,
    struct pipe_index_buffer ib = {};
    struct pipe_draw_info info = *dinfo;
 
+   if (!dinfo->count_from_stream_output && !dinfo->indirect &&
+       !dinfo->primitive_restart &&
+       !u_trim_pipe_prim(dinfo->mode, (unsigned*)&dinfo->count))
+      return;
+
    if (!(rs->caps.caps.v1.prim_mask & (1 << dinfo->mode))) {
       util_primconvert_save_index_buffer(vctx->primconvert, &vctx->index_buffer);
       util_primconvert_draw_vbo(vctx->primconvert, dinfo);

src/mesa/state_tracker/st_draw.c

@@ -251,16 +251,8 @@ st_draw_vbo(struct gl_context *ctx,
                       info.indexed);
       }
 
-      if (info.count_from_stream_output) {
-         cso_draw_vbo(st->cso_context, &info);
-      }
-      else if (info.primitive_restart) {
-         /* don't trim, restarts might be inside index list */
-         cso_draw_vbo(st->cso_context, &info);
-      }
-      else if (u_trim_pipe_prim(prims[i].mode, &info.count)) {
-         cso_draw_vbo(st->cso_context, &info);
-      }
+      /* Don't call u_trim_pipe_prim. Drivers should do it if they need it. */
+      cso_draw_vbo(st->cso_context, &info);
    }
 }