mesa: Add support for GL_ARB_base_instance

Reviewed-by: Brian Paul <[email protected]>

1 files changed, 105 insertions, 9 deletions

diff --git a/src/mesa/vbo/vbo_exec_array.c b/src/mesa/vbo/vbo_exec_array.c
index 3fb7c6480bf..ebf00853621 100644
--- a/src/mesa/vbo/vbo_exec_array.c
+++ b/src/mesa/vbo/vbo_exec_array.c
@@ -581,7 +581,7 @@ vbo_handle_primitive_restart(struct gl_context *ctx,
  */
 static void
 vbo_draw_arrays(struct gl_context *ctx, GLenum mode, GLint start,
-                GLsizei count, GLuint numInstances)
+                GLsizei count, GLuint numInstances, GLuint baseInstance)
 {
    struct vbo_context *vbo = vbo_context(ctx);
    struct vbo_exec_context *exec = &vbo->exec;
@@ -595,6 +595,7 @@ vbo_draw_arrays(struct gl_context *ctx, GLenum mode, GLint start,
    prim[0].end = 1;
    prim[0].mode = mode;
    prim[0].num_instances = numInstances;
+   prim[0].base_instance = baseInstance;
 
    /* Implement the primitive restart index */
    if (ctx->Array.PrimitiveRestart && ctx->Array.RestartIndex < count) {
@@ -673,7 +674,7 @@ vbo_exec_DrawArrays(GLenum mode, GLint start, GLsizei count)
    if (0)
       check_draw_arrays_data(ctx, start, count);
 
-   vbo_draw_arrays(ctx, mode, start, count, 1);
+   vbo_draw_arrays(ctx, mode, start, count, 1, 0);
 
    if (0)
       print_draw_arrays(ctx, mode, start, count);
@@ -702,7 +703,7 @@ vbo_exec_DrawArraysInstanced(GLenum mode, GLint start, GLsizei count,
    if (0)
       check_draw_arrays_data(ctx, start, count);
 
-   vbo_draw_arrays(ctx, mode, start, count, numInstances);
+   vbo_draw_arrays(ctx, mode, start, count, numInstances, 0);
 
    if (0)
       print_draw_arrays(ctx, mode, start, count);
@@ -710,6 +711,40 @@ vbo_exec_DrawArraysInstanced(GLenum mode, GLint start, GLsizei count,
 
 
 /**
+ * Called from glDrawArraysInstancedBaseInstance when in immediate mode.
+ */
+static void GLAPIENTRY
+vbo_exec_DrawArraysInstancedBaseInstance(GLenum mode, GLint first, GLsizei count,
+                                         GLsizei numInstances, GLuint baseInstance)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_DRAW)
+      _mesa_debug(ctx, "glDrawArraysInstancedBaseInstance(%s, %d, %d, %d, %d)\n",
+                  _mesa_lookup_enum_by_nr(mode), first, count,
+                  numInstances, baseInstance);
+
+   if (!_mesa_validate_DrawArraysInstanced(ctx, mode, first, count,
+                                           numInstances))
+      return;
+
+   FLUSH_CURRENT(ctx, 0);
+
+   if (!_mesa_valid_to_render(ctx, "glDrawArraysInstancedBaseInstance"))
+      return;
+
+   if (0)
+      check_draw_arrays_data(ctx, first, count);
+
+   vbo_draw_arrays(ctx, mode, first, count, numInstances, baseInstance);
+
+   if (0)
+      print_draw_arrays(ctx, mode, first, count);
+}
+
+
+
+/**
  * Map GL_ELEMENT_ARRAY_BUFFER and print contents.
  * For debugging.
  */
@@ -779,7 +814,8 @@ vbo_validated_drawrangeelements(struct gl_context *ctx, GLenum mode,
 				GLuint start, GLuint end,
 				GLsizei count, GLenum type,
 				const GLvoid *indices,
-				GLint basevertex, GLint numInstances)
+				GLint basevertex, GLint numInstances,
+				GLuint baseInstance)
 {
    struct vbo_context *vbo = vbo_context(ctx);
    struct vbo_exec_context *exec = &vbo->exec;
@@ -803,6 +839,7 @@ vbo_validated_drawrangeelements(struct gl_context *ctx, GLenum mode,
    prim[0].indexed = 1;
    prim[0].basevertex = basevertex;
    prim[0].num_instances = numInstances;
+   prim[0].base_instance = baseInstance;
 
    /* Need to give special consideration to rendering a range of
     * indices starting somewhere above zero.  Typically the
@@ -927,7 +964,7 @@ vbo_exec_DrawRangeElementsBaseVertex(GLenum mode,
 #endif
 
    vbo_validated_drawrangeelements(ctx, mode, index_bounds_valid, start, end,
-				   count, type, indices, basevertex, 1);
+				   count, type, indices, basevertex, 1, 0);
 }
 
 
@@ -971,7 +1008,7 @@ vbo_exec_DrawElements(GLenum mode, GLsizei count, GLenum type,
       return;
 
    vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
-				   count, type, indices, 0, 1);
+				   count, type, indices, 0, 1, 0);
 }
 
 
@@ -996,7 +1033,7 @@ vbo_exec_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
       return;
 
    vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
-				   count, type, indices, basevertex, 1);
+				   count, type, indices, basevertex, 1, 0);
 }
 
 
@@ -1021,9 +1058,10 @@ vbo_exec_DrawElementsInstanced(GLenum mode, GLsizei count, GLenum type,
       return;
 
    vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
-				   count, type, indices, 0, numInstances);
+				   count, type, indices, 0, numInstances, 0);
 }
 
+
 /**
  * Called by glDrawElementsInstancedBaseVertex() in immediate mode.
  */
@@ -1047,7 +1085,59 @@ vbo_exec_DrawElementsInstancedBaseVertex(GLenum mode, GLsizei count, GLenum type
       return;
 
    vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
-				   count, type, indices, basevertex, numInstances);
+				   count, type, indices, basevertex, numInstances, 0);
+}
+
+
+/**
+ * Called by glDrawElementsInstancedBaseInstance() in immediate mode.
+ */
+static void GLAPIENTRY
+vbo_exec_DrawElementsInstancedBaseInstance(GLenum mode, GLsizei count, GLenum type,
+                                           const GLvoid *indices, GLsizei numInstances,
+                                           GLuint baseInstance)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_DRAW)
+      _mesa_debug(ctx, "glDrawElementsInstancedBaseInstance(%s, %d, %s, %p, %d, %d)\n",
+                  _mesa_lookup_enum_by_nr(mode), count,
+                  _mesa_lookup_enum_by_nr(type), indices,
+                  numInstances, baseInstance);
+
+   if (!_mesa_validate_DrawElementsInstanced(ctx, mode, count, type, indices,
+                                             numInstances, 0))
+      return;
+
+   vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
+                                   count, type, indices, 0, numInstances,
+                                   baseInstance);
+}
+
+
+/**
+ * Called by glDrawElementsInstancedBaseVertexBaseInstance() in immediate mode.
+ */
+static void GLAPIENTRY
+vbo_exec_DrawElementsInstancedBaseVertexBaseInstance(GLenum mode, GLsizei count, GLenum type,
+                                                     const GLvoid *indices, GLsizei numInstances,
+                                                     GLint basevertex, GLuint baseInstance)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_DRAW)
+      _mesa_debug(ctx, "glDrawElementsInstancedBaseVertexBaseInstance(%s, %d, %s, %p, %d, %d, %d)\n",
+                  _mesa_lookup_enum_by_nr(mode), count,
+                  _mesa_lookup_enum_by_nr(type), indices,
+                  numInstances, basevertex, baseInstance);
+
+   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,
+                                   baseInstance);
 }
 
 
@@ -1128,6 +1218,7 @@ vbo_validated_multidrawelements(struct gl_context *ctx, GLenum mode,
 	 prim[i].count = count[i];
 	 prim[i].indexed = 1;
          prim[i].num_instances = 1;
+         prim[i].base_instance = 0;
 	 if (basevertex != NULL)
 	    prim[i].basevertex = basevertex[i];
 	 else
@@ -1154,6 +1245,7 @@ vbo_validated_multidrawelements(struct gl_context *ctx, GLenum mode,
 	 prim[0].count = count[i];
 	 prim[0].indexed = 1;
          prim[0].num_instances = 1;
+         prim[0].base_instance = 0;
 	 if (basevertex != NULL)
 	    prim[0].basevertex = basevertex[i];
 	 else
@@ -1236,6 +1328,7 @@ vbo_draw_transform_feedback(struct gl_context *ctx, GLenum mode,
    prim[0].end = 1;
    prim[0].mode = mode;
    prim[0].num_instances = numInstances;
+   prim[0].base_instance = 0;
 
    /* Maybe we should do some primitive splitting for primitive restart
     * (like in DrawArrays), but we have no way to know how many vertices
@@ -1295,8 +1388,11 @@ vbo_exec_array_init( struct vbo_exec_context *exec )
    exec->vtxfmt.DrawRangeElementsBaseVertex = vbo_exec_DrawRangeElementsBaseVertex;
    exec->vtxfmt.MultiDrawElementsBaseVertex = vbo_exec_MultiDrawElementsBaseVertex;
    exec->vtxfmt.DrawArraysInstanced = vbo_exec_DrawArraysInstanced;
+   exec->vtxfmt.DrawArraysInstancedBaseInstance = vbo_exec_DrawArraysInstancedBaseInstance;
    exec->vtxfmt.DrawElementsInstanced = vbo_exec_DrawElementsInstanced;
+   exec->vtxfmt.DrawElementsInstancedBaseInstance = vbo_exec_DrawElementsInstancedBaseInstance;
    exec->vtxfmt.DrawElementsInstancedBaseVertex = vbo_exec_DrawElementsInstancedBaseVertex;
+   exec->vtxfmt.DrawElementsInstancedBaseVertexBaseInstance = vbo_exec_DrawElementsInstancedBaseVertexBaseInstance;
 #if FEATURE_EXT_transform_feedback
    exec->vtxfmt.DrawTransformFeedback = vbo_exec_DrawTransformFeedback;
 #endif