Mesa (master): gallium: don't use edgeflags if the app didn't supply them

[Roland Scheidegger]

Module: Mesa
Branch: master
Commit: 420ff89067515a74c9625a103cadc267d5f64bd4
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=420ff89067515a74c9625a103cadc267d5f64bd4

Author: Roland Scheidegger <sroland at vmware.com>
Date:   Sat Dec 19 20:25:43 2009 +0100

gallium: don't use edgeflags if the app didn't supply them

---

 src/mesa/state_tracker/st_atom_shader.c |   10 ++++++----
 src/mesa/state_tracker/st_context.h     |    2 ++
 src/mesa/state_tracker/st_draw.c        |    8 ++++++++
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/mesa/state_tracker/st_atom_shader.c b/src/mesa/state_tracker/st_atom_shader.c
index c2cb72e..46c8cbb 100644
--- a/src/mesa/state_tracker/st_atom_shader.c
+++ b/src/mesa/state_tracker/st_atom_shader.c
@@ -112,10 +112,12 @@ find_translated_vp(struct st_context *st,
     * edgeflag semantics, and extend the vertex shader to pass through
     * the input to the output.  We'll need to use similar logic to set
     * up the extra vertex_element input for edgeflags.
+    * _NEW_POLYGON, ST_NEW_EDGEFLAGS_DATA
     */
-   key.passthrough_edgeflags = (st->ctx->Polygon.FrontMode != GL_FILL ||
-                                st->ctx->Polygon.BackMode != GL_FILL);
-      
+   key.passthrough_edgeflags = (st->vertdata_edgeflags && (
+                                st->ctx->Polygon.FrontMode != GL_FILL ||
+                                st->ctx->Polygon.BackMode != GL_FILL));
+
 
    /* Do we need to throw away old translations after a change in the
     * GL program string?
@@ -228,7 +230,7 @@ const struct st_tracked_state st_update_vp = {
    "st_update_vp",					/* name */
    {							/* dirty */
       _NEW_POLYGON,					/* mesa */
-      ST_NEW_VERTEX_PROGRAM                             /* st */
+      ST_NEW_VERTEX_PROGRAM | ST_NEW_EDGEFLAGS_DATA	/* st */
    },
    update_vp					/* update */
 };
diff --git a/src/mesa/state_tracker/st_context.h b/src/mesa/state_tracker/st_context.h
index b760728..831909a 100644
--- a/src/mesa/state_tracker/st_context.h
+++ b/src/mesa/state_tracker/st_context.h
@@ -55,6 +55,7 @@ struct bitmap_cache;
 #define ST_NEW_FRAGMENT_PROGRAM        0x2
 #define ST_NEW_VERTEX_PROGRAM          0x4
 #define ST_NEW_FRAMEBUFFER             0x8
+#define ST_NEW_EDGEFLAGS_DATA          0x10
 
 
 struct st_state_flags {
@@ -120,6 +121,7 @@ struct st_context
    struct st_state_flags dirty;
 
    GLboolean missing_textures;
+   GLboolean vertdata_edgeflags;
 
    /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
    const GLuint *vertex_result_to_slot;
diff --git a/src/mesa/state_tracker/st_draw.c b/src/mesa/state_tracker/st_draw.c
index 6b0007a..2d287ef 100644
--- a/src/mesa/state_tracker/st_draw.c
+++ b/src/mesa/state_tracker/st_draw.c
@@ -514,6 +514,7 @@ st_draw_vbo(GLcontext *ctx,
    struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
    unsigned num_vbuffers, num_velements;
    GLboolean userSpace;
+   GLboolean vertDataEdgeFlags;
 
    /* Gallium probably doesn't want this in some cases. */
    if (!index_bounds_valid)
@@ -522,6 +523,13 @@ st_draw_vbo(GLcontext *ctx,
    /* sanity check for pointer arithmetic below */
    assert(sizeof(arrays[0]->Ptr[0]) == 1);
 
+   vertDataEdgeFlags = arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj &&
+                       arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj->Name;
+   if (vertDataEdgeFlags != ctx->st->vertdata_edgeflags) {
+      ctx->st->vertdata_edgeflags = vertDataEdgeFlags;
+      ctx->st->dirty.st |= ST_NEW_EDGEFLAGS_DATA;
+   }
+
    st_validate_state(ctx->st);
 
    /* must get these after state validation! */