From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Wed, 17 Sep 2003 18:15:13 +0000 (+0000)
Subject: Implement GL_ELEMENT_ARRAY_BUFFER_ARB for buffer objects.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d2afb39d1997e9f2e3c64fc9fa49393e2839d8a1;p=mesa.git

Implement GL_ELEMENT_ARRAY_BUFFER_ARB for buffer objects.
---

diff --git a/src/mesa/main/varray.c b/src/mesa/main/varray.c
index 822935b7653..973541b87e0 100644
--- a/src/mesa/main/varray.c
+++ b/src/mesa/main/varray.c
@@ -924,6 +924,12 @@ _mesa_MultiDrawElementsEXT( GLenum mode, const GLsizei *count, GLenum type,
 
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
+   if (ctx->Array.ElementArrayBufferObj->Name) {
+      /* use indices in the buffer object */
+      ASSERT(ctx->Array.ElementArrayBufferObj->Data);
+      indices = (const GLvoid **) ctx->Array.ElementArrayBufferObj->Data;
+   }
+
    for (i = 0; i < primcount; i++) {
       if (count[i] > 0) {
          (ctx->Exec->DrawElements)(mode, count[i], type, indices[i]);
@@ -963,6 +969,8 @@ _mesa_MultiModeDrawElementsIBM( const GLenum * mode, const GLsizei * count,
 
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
+   /* XXX not sure about ARB_vertex_buffer_object handling here */
+
    for ( i = 0 ; i < primcount ; i++ ) {
       if ( count[i] > 0 ) {
 	 (ctx->Exec->DrawElements)( *(GLenum *) ((char *) mode + (i * modestride)),
diff --git a/src/mesa/tnl/t_array_api.c b/src/mesa/tnl/t_array_api.c
index 95bc293beef..229371fc0a9 100644
--- a/src/mesa/tnl/t_array_api.c
+++ b/src/mesa/tnl/t_array_api.c
@@ -62,8 +62,14 @@ static void fallback_drawelements( GLcontext *ctx, GLenum mode, GLsizei count,
 {
    if (_tnl_hard_begin(ctx, mode)) {
       GLint i;
-      for (i = 0 ; i < count ; i++)
-	 glArrayElement( indices[i] );
+      if (ctx->Array.ElementArrayBufferObj->Name) {
+         /* use indices in the buffer object */
+         ASSERT(ctx->Array.ElementArrayBufferObj->Data);
+         indices = (const GLuint *) ctx->Array.ElementArrayBufferObj->Data;
+      }
+      for (i = 0 ; i < count ; i++) {
+         glArrayElement( indices[i] );
+      }
       glEnd();
    }
 }
@@ -260,6 +266,12 @@ _tnl_DrawRangeElements(GLenum mode,
    if (MESA_VERBOSE & VERBOSE_API)
       _mesa_debug(NULL, "_tnl_DrawRangeElements %d %d %d\n", start, end, count); 
 
+   if (ctx->Array.ElementArrayBufferObj->Name) {
+      /* use indices in the buffer object */
+      ASSERT(ctx->Array.ElementArrayBufferObj->Data);
+      indices = (GLuint *) ctx->Array.ElementArrayBufferObj->Data;
+   }
+
    /* Check arguments, etc.
     */
    if (!_mesa_validate_DrawRangeElements( ctx, mode, start, end, count,
@@ -327,6 +339,12 @@ _tnl_DrawElements(GLenum mode, GLsizei count, GLenum type,
    if (MESA_VERBOSE & VERBOSE_API)
       _mesa_debug(NULL, "_tnl_DrawElements %d\n", count); 
 
+   if (ctx->Array.ElementArrayBufferObj->Name) {
+      /* use indices in the buffer object */
+      ASSERT(ctx->Array.ElementArrayBufferObj->Data);
+      indices = (const GLvoid *) ctx->Array.ElementArrayBufferObj->Data;
+   }
+
    /* Check arguments, etc.
     */
    if (!_mesa_validate_DrawElements( ctx, mode, count, type, indices ))
diff --git a/src/mesa/tnl/t_array_import.c b/src/mesa/tnl/t_array_import.c
index ab11f50c8fe..0a8197c10a4 100644
--- a/src/mesa/tnl/t_array_import.c
+++ b/src/mesa/tnl/t_array_import.c
@@ -56,7 +56,12 @@ static void _tnl_import_vertex( GLcontext *ctx,
 			   writeable,
 			   &is_writeable);
 
+#if 0
+   /* guess we really don't need to add pointers here - BP */
    data = ADD_POINTERS(tmp->Ptr, tmp->BufferObj->Data);
+#else
+   data = tmp->Ptr;
+#endif
    inputs->Obj.data = (GLfloat (*)[4]) data;
    inputs->Obj.start = (GLfloat *) data;
    inputs->Obj.stride = tmp->StrideB;
@@ -81,7 +86,11 @@ static void _tnl_import_normal( GLcontext *ctx,
 			   stride ? 3*sizeof(GLfloat) : 0, writeable,
 			   &is_writeable);
 
+#if 0
    data = ADD_POINTERS(tmp->Ptr, tmp->BufferObj->Data);
+#else
+   data = tmp->Ptr;
+#endif
    inputs->Normal.data = (GLfloat (*)[4]) data;
    inputs->Normal.start = (GLfloat *) data;
    inputs->Normal.stride = tmp->StrideB;
@@ -145,7 +154,11 @@ static void _tnl_import_fogcoord( GLcontext *ctx,
 			     stride ? sizeof(GLfloat) : 0, writeable,
 			     &is_writeable);
 
+#if 0
    data = ADD_POINTERS(tmp->Ptr, tmp->BufferObj->Data);
+#else
+   data = tmp->Ptr;
+#endif
    inputs->FogCoord.data = (GLfloat (*)[4]) data;
    inputs->FogCoord.start = (GLfloat *) data;
    inputs->FogCoord.stride = tmp->StrideB;
@@ -169,7 +182,11 @@ static void _tnl_import_index( GLcontext *ctx,
 			  stride ? sizeof(GLuint) : 0, writeable,
 			  &is_writeable);
 
+#if 0
    data = ADD_POINTERS(tmp->Ptr, tmp->BufferObj->Data);
+#else
+   data = tmp->Ptr;
+#endif
    inputs->Index.data = (GLuint *) data;
    inputs->Index.start = (GLuint *) data;
    inputs->Index.stride = tmp->StrideB;
@@ -197,7 +214,11 @@ static void _tnl_import_texcoord( GLcontext *ctx,
 			     writeable,
 			     &is_writeable);
 
+#if 0
    data = ADD_POINTERS(tmp->Ptr, tmp->BufferObj->Data);
+#else
+   data = tmp->Ptr;
+#endif
    inputs->TexCoord[unit].data = (GLfloat (*)[4]) data;
    inputs->TexCoord[unit].start = (GLfloat *) data;
    inputs->TexCoord[unit].stride = tmp->StrideB;
@@ -224,7 +245,11 @@ static void _tnl_import_edgeflag( GLcontext *ctx,
 			     0,
 			     &is_writeable);
 
+#if 0
    data = ADD_POINTERS(tmp->Ptr, tmp->BufferObj->Data);
+#else
+   data = tmp->Ptr;
+#endif
    inputs->EdgeFlag.data = (GLubyte *) data;
    inputs->EdgeFlag.start = (GLubyte *) data;
    inputs->EdgeFlag.stride = tmp->StrideB;
@@ -253,7 +278,11 @@ static void _tnl_import_attrib( GLcontext *ctx,
                            writeable,
                            &is_writeable);
 
+#if 0
    data = ADD_POINTERS(tmp->Ptr, tmp->BufferObj->Data);
+#else
+   data = tmp->Ptr;
+#endif
    inputs->Attribs[index].data = (GLfloat (*)[4]) data;
    inputs->Attribs[index].start = (GLfloat *) data;
    inputs->Attribs[index].stride = tmp->StrideB;