glapi: add plumbing for GL_ARB_draw_indirect and GL_ARB_multi_draw_indirect

Based on part of Patch 2 of Christoph Bumiller's ARB_draw_indirect series.

Signed-off-by: Chris Forbes <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>

2 files changed, 39 insertions, 4 deletions

diff --git a/src/mesa/main/tests/dispatch_sanity.cpp b/src/mesa/main/tests/dispatch_sanity.cpp
index 922f0acafc2..e57fb52d394 100644
--- a/src/mesa/main/tests/dispatch_sanity.cpp
+++ b/src/mesa/main/tests/dispatch_sanity.cpp
@@ -667,8 +667,8 @@ const struct function gl_core_functions_possible[] = {
    { "glVertexAttribP3uiv", 43, -1 },
    { "glVertexAttribP4ui", 43, -1 },
    { "glVertexAttribP4uiv", 43, -1 },
-// { "glDrawArraysIndirect", 43, -1 },                  // XXX: Add to xml
-// { "glDrawElementsIndirect", 43, -1 },                // XXX: Add to xml
+   { "glDrawArraysIndirect", 43, -1 },
+   { "glDrawElementsIndirect", 43, -1 },
 // { "glUniform1d", 43, -1 },                           // XXX: Add to xml
 // { "glUniform2d", 43, -1 },                           // XXX: Add to xml
 // { "glUniform3d", 43, -1 },                           // XXX: Add to xml
@@ -877,8 +877,8 @@ const struct function gl_core_functions_possible[] = {
    { "glInvalidateBufferData", 43, -1 },
    { "glInvalidateFramebuffer", 43, -1 },
    { "glInvalidateSubFramebuffer", 43, -1 },
-// { "glMultiDrawArraysIndirect", 43, -1 },             // XXX: Add to xml
-// { "glMultiDrawElementsIndirect", 43, -1 },           // XXX: Add to xml
+   { "glMultiDrawArraysIndirect", 43, -1 },
+   { "glMultiDrawElementsIndirect", 43, -1 },
 // { "glGetProgramInterfaceiv", 43, -1 },               // XXX: Add to xml
 // { "glGetProgramResourceIndex", 43, -1 },             // XXX: Add to xml
 // { "glGetProgramResourceName", 43, -1 },              // XXX: Add to xml
diff --git a/src/mesa/vbo/vbo_exec_array.c b/src/mesa/vbo/vbo_exec_array.c
index a2c0c7d8f31..303e87f779c 100644
--- a/src/mesa/vbo/vbo_exec_array.c
+++ b/src/mesa/vbo/vbo_exec_array.c
@@ -1564,6 +1564,34 @@ vbo_exec_DrawTransformFeedbackStreamInstanced(GLenum mode, GLuint name,
    vbo_draw_transform_feedback(ctx, mode, obj, stream, primcount);
 }
 
+/**
+ * Like [Multi]DrawArrays/Elements, but they take most arguments from
+ * a buffer object.
+ */
+static void GLAPIENTRY
+vbo_exec_DrawArraysIndirect(GLenum mode, const GLvoid *indirect)
+{
+}
+
+static void GLAPIENTRY
+vbo_exec_DrawElementsIndirect(GLenum mode, GLenum type,
+                              const GLvoid *indirect)
+{
+}
+
+static void GLAPIENTRY
+vbo_exec_MultiDrawArraysIndirect(GLenum mode,
+                                 const GLvoid *indirect,
+                                 GLsizei primcount, GLsizei stride)
+{
+}
+
+static void GLAPIENTRY
+vbo_exec_MultiDrawElementsIndirect(GLenum mode, GLenum type,
+                                   const GLvoid *indirect,
+                                   GLsizei primcount, GLsizei stride)
+{
+}
 
 /**
  * Initialize the dispatch table with the VBO functions for drawing.
@@ -1597,6 +1625,13 @@ vbo_initialize_exec_dispatch(const struct gl_context *ctx,
       SET_DrawElementsInstancedBaseVertexBaseInstance(exec, vbo_exec_DrawElementsInstancedBaseVertexBaseInstance);
    }
 
+   if (ctx->API == API_OPENGL_CORE) {
+      SET_DrawArraysIndirect(exec, vbo_exec_DrawArraysIndirect);
+      SET_DrawElementsIndirect(exec, vbo_exec_DrawElementsIndirect);
+      SET_MultiDrawArraysIndirect(exec, vbo_exec_MultiDrawArraysIndirect);
+      SET_MultiDrawElementsIndirect(exec, vbo_exec_MultiDrawElementsIndirect);
+   }
+
    if (_mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx)) {
       SET_DrawArraysInstancedARB(exec, vbo_exec_DrawArraysInstanced);
       SET_DrawElementsInstancedARB(exec, vbo_exec_DrawElementsInstanced);