vbo: add assertions, comments in vbo_exec_api.c

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

diff --git a/src/mesa/vbo/vbo_exec_api.c b/src/mesa/vbo/vbo_exec_api.c
index 019f986f0bbcc3b314d6a86908a9d323cc1e08f7..800fac85c45c034a55fc01e0b56dbdf7c5cb2a54 100644 (file)
--- a/src/mesa/vbo/vbo_exec_api.c
+++ b/src/mesa/vbo/vbo_exec_api.c
@@ -270,6 +270,7 @@ vbo_exec_copy_from_current(struct vbo_exec_context *exec)
  * to a larger one.  Ex: glTexCoord2f -> glTexCoord4f.
  * We need to go back over the previous 2-component texcoords and insert
  * zero and one values.
+ * \param attr  VBO_ATTRIB_x vertex attribute value
  */
 static void
 vbo_exec_wrap_upgrade_vertex(struct vbo_exec_context *exec,
@@ -283,6 +284,8 @@ vbo_exec_wrap_upgrade_vertex(struct vbo_exec_context *exec,
    const GLuint oldSize = exec->vtx.attrsz[attr];
    GLuint i;
 
+   assert(attr < VBO_ATTRIB_MAX);
+
    /* Run pipeline on current vertices, copy wrapped vertices
     * to exec->vtx.copied.
     */
@@ -401,6 +404,7 @@ vbo_exec_wrap_upgrade_vertex(struct vbo_exec_context *exec,
  * For example, we saw a bunch of glTexCoord2f() calls and now we got a
  * glTexCoord4f() call.  We promote the array from size=2 to size=4.
  * \param newSize  size of new vertex (number of 32-bit words).
+ * \param attr  VBO_ATTRIB_x vertex attribute value
  */
 static void
 vbo_exec_fixup_vertex(struct gl_context *ctx, GLuint attr,
@@ -408,6 +412,8 @@ vbo_exec_fixup_vertex(struct gl_context *ctx, GLuint attr,
 {
    struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
 
+   assert(attr < VBO_ATTRIB_MAX);
+
    if (newSize > exec->vtx.attrsz[attr] ||
        newType != exec->vtx.attrtype[attr]) {
       /* New size is larger.  Need to flush existing vertices and get
@@ -459,7 +465,7 @@ vbo_exec_begin_vertices(struct gl_context *ctx)
 /**
  * This macro is used to implement all the glVertex, glColor, glTexCoord,
  * glVertexAttrib, etc functions.
- * \param A  attribute index
+ * \param A  VBO_ATTRIB_x attribute index
  * \param N  attribute size (1..4)
  * \param T  type (GL_FLOAT, GL_DOUBLE, GL_INT, GL_UNSIGNED_INT)
  * \param C  cast type (fi_type or double)