Mesa (master): etnaviv: add support for user index buffers

[Marek Olšák]

Module: Mesa
Branch: master
Commit: 19c51e072b6fa614bc9c0f379bf462acd94c5431
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=19c51e072b6fa614bc9c0f379bf462acd94c5431

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Fri Feb 17 01:59:48 2017 +0100

etnaviv: add support for user index buffers

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

---

 src/gallium/drivers/etnaviv/etnaviv_context.c | 12 ++++++++++++
 src/gallium/drivers/etnaviv/etnaviv_screen.c  |  2 +-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/etnaviv/etnaviv_context.c b/src/gallium/drivers/etnaviv/etnaviv_context.c
index 5566e0e..dfd9e1f 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_context.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_context.c
@@ -47,6 +47,7 @@
 #include "pipe/p_context.h"
 #include "pipe/p_state.h"
 #include "util/u_blitter.h"
+#include "util/u_helpers.h"
 #include "util/u_memory.h"
 #include "util/u_prim.h"
 #include "util/u_upload_mgr.h"
@@ -137,6 +138,15 @@ etna_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
       return;
    }
 
+   /* Upload a user index buffer. */
+   struct pipe_index_buffer ibuffer_saved = {};
+   if (info->indexed && ctx->index_buffer.ib.user_buffer &&
+       !util_save_and_upload_index_buffer(pctx, info, &ctx->index_buffer.ib,
+                                          &ibuffer_saved)) {
+      BUG("Index buffer upload failed.");
+      return;
+   }
+
    if (info->indexed && !ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo) {
       BUG("Unsupported or no index buffer");
       return;
@@ -211,6 +221,8 @@ etna_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
       etna_resource(ctx->framebuffer.cbuf->texture)->seqno++;
    if (ctx->framebuffer.zsbuf)
       etna_resource(ctx->framebuffer.zsbuf->texture)->seqno++;
+   if (info->indexed && ibuffer_saved.user_buffer)
+      pctx->set_index_buffer(pctx, &ibuffer_saved);
 }
 
 static void
diff --git a/src/gallium/drivers/etnaviv/etnaviv_screen.c b/src/gallium/drivers/etnaviv/etnaviv_screen.c
index ccfa0d8..d00f5d0 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_screen.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c
@@ -136,6 +136,7 @@ etna_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_USER_CONSTANT_BUFFERS:
    case PIPE_CAP_TGSI_TEXCOORD:
    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
+   case PIPE_CAP_USER_INDEX_BUFFERS:
       return 1;
 
    /* Memory */
@@ -180,7 +181,6 @@ etna_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
    case PIPE_CAP_USER_VERTEX_BUFFERS:
-   case PIPE_CAP_USER_INDEX_BUFFERS:
    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY: