Mesa (master): mesa: add implementation of glDrawElementsInstancedBaseVertex

[Brian Paul]

Module: Mesa
Branch: master
Commit: 09201cc7a0c4c50871bb8aa5d00ac70aa4e9e670
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=09201cc7a0c4c50871bb8aa5d00ac70aa4e9e670

Author: Pierre-Eric Pelloux-Prayer <pelloux at gmail.com>
Date:   Tue May 31 13:33:54 2011 +0200

mesa: add implementation of glDrawElementsInstancedBaseVertex

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

---

 src/mesa/main/api_validate.c  |    5 +++--
 src/mesa/main/api_validate.h  |    3 ++-
 src/mesa/main/dd.h            |    3 +++
 src/mesa/main/vtxfmt.c        |    1 +
 src/mesa/vbo/vbo_exec_array.c |   27 ++++++++++++++++++++++++++-
 5 files changed, 35 insertions(+), 4 deletions(-)

diff --git a/src/mesa/main/api_validate.c b/src/mesa/main/api_validate.c
index 993519f..2981d42 100644
--- a/src/mesa/main/api_validate.c
+++ b/src/mesa/main/api_validate.c
@@ -396,7 +396,8 @@ _mesa_validate_DrawArraysInstanced(struct gl_context *ctx, GLenum mode, GLint fi
 GLboolean
 _mesa_validate_DrawElementsInstanced(struct gl_context *ctx,
                                      GLenum mode, GLsizei count, GLenum type,
-                                     const GLvoid *indices, GLsizei numInstances)
+                                     const GLvoid *indices, GLsizei numInstances,
+                                     GLint basevertex)
 {
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 
@@ -447,7 +448,7 @@ _mesa_validate_DrawElementsInstanced(struct gl_context *ctx,
          return GL_FALSE;
    }
 
-   if (!check_index_bounds(ctx, count, type, indices, 0))
+   if (!check_index_bounds(ctx, count, type, indices, basevertex))
       return GL_FALSE;
 
    return GL_TRUE;
diff --git a/src/mesa/main/api_validate.h b/src/mesa/main/api_validate.h
index 16b9c2b..09e9522 100644
--- a/src/mesa/main/api_validate.h
+++ b/src/mesa/main/api_validate.h
@@ -62,7 +62,8 @@ _mesa_validate_DrawArraysInstanced(struct gl_context *ctx, GLenum mode, GLint fi
 extern GLboolean
 _mesa_validate_DrawElementsInstanced(struct gl_context *ctx,
                                      GLenum mode, GLsizei count, GLenum type,
-                                     const GLvoid *indices, GLsizei primcount);
+                                     const GLvoid *indices, GLsizei primcount,
+                                     GLint basevertex);
 
 
 #endif
diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index d749b24..9fe6d52 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -1177,6 +1177,9 @@ typedef struct {
    void (GLAPIENTRYP DrawElementsInstanced)(GLenum mode, GLsizei count,
                                             GLenum type, const GLvoid *indices,
                                             GLsizei primcount);
+   void (GLAPIENTRYP DrawElementsInstancedBaseVertex)(GLenum mode, GLsizei count,
+                                            GLenum type, const GLvoid *indices,
+                                            GLsizei primcount, GLint basevertex);
    /*@}*/
 
    /**
diff --git a/src/mesa/main/vtxfmt.c b/src/mesa/main/vtxfmt.c
index 692ce08..d094147 100644
--- a/src/mesa/main/vtxfmt.c
+++ b/src/mesa/main/vtxfmt.c
@@ -106,6 +106,7 @@ install_vtxfmt( struct _glapi_table *tab, const GLvertexformat *vfmt )
    SET_MultiDrawElementsBaseVertex(tab, vfmt->MultiDrawElementsBaseVertex);
    SET_DrawArraysInstancedARB(tab, vfmt->DrawArraysInstanced);
    SET_DrawElementsInstancedARB(tab, vfmt->DrawElementsInstanced);
+   SET_DrawElementsInstancedBaseVertex(tab, vfmt->DrawElementsInstancedBaseVertex);
 
    /* GL_NV_vertex_program */
    SET_VertexAttrib1fNV(tab, vfmt->VertexAttrib1fNV);
diff --git a/src/mesa/vbo/vbo_exec_array.c b/src/mesa/vbo/vbo_exec_array.c
index a49cd50..5e9b279 100644
--- a/src/mesa/vbo/vbo_exec_array.c
+++ b/src/mesa/vbo/vbo_exec_array.c
@@ -1045,13 +1045,37 @@ vbo_exec_DrawElementsInstanced(GLenum mode, GLsizei count, GLenum type,
                   _mesa_lookup_enum_by_nr(type), indices, numInstances);
 
    if (!_mesa_validate_DrawElementsInstanced(ctx, mode, count, type, indices,
-                                             numInstances))
+                                             numInstances, 0))
       return;
 
    vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
 				   count, type, indices, 0, numInstances);
 }
 
+/**
+ * Called by glDrawElementsInstancedBaseVertex() in immediate mode.
+ */
+static void GLAPIENTRY
+vbo_exec_DrawElementsInstancedBaseVertex(GLenum mode, GLsizei count, GLenum type,
+                               const GLvoid *indices, GLsizei numInstances,
+                               GLint basevertex)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_DRAW)
+      _mesa_debug(ctx, "glDrawElementsInstancedBaseVertex(%s, %d, %s, %p, %d; %d)\n",
+                  _mesa_lookup_enum_by_nr(mode), count,
+                  _mesa_lookup_enum_by_nr(type), indices,
+                  numInstances, basevertex);
+
+   if (!_mesa_validate_DrawElementsInstanced(ctx, mode, count, type, indices,
+                                             numInstances, basevertex))
+      return;
+
+   vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
+				   count, type, indices, basevertex, numInstances);
+}
+
 
 /**
  * Inner support for both _mesa_MultiDrawElements() and
@@ -1260,6 +1284,7 @@ vbo_exec_array_init( struct vbo_exec_context *exec )
    exec->vtxfmt.MultiDrawElementsBaseVertex = vbo_exec_MultiDrawElementsBaseVertex;
    exec->vtxfmt.DrawArraysInstanced = vbo_exec_DrawArraysInstanced;
    exec->vtxfmt.DrawElementsInstanced = vbo_exec_DrawElementsInstanced;
+   exec->vtxfmt.DrawElementsInstancedBaseVertex = vbo_exec_DrawElementsInstancedBaseVertex;
 }