main: Add entry point for NamedFramebufferDrawBuffers.

Reviewed-by: Fredrik Höglund <fredrik@kde.org>
Signed-off-by: Fredrik Höglund <fredrik@kde.org>

src/mapi/glapi/gen/ARB_direct_state_access.xml

@@ -192,6 +192,12 @@
       <param name="buf" type="GLenum" />
    </function>
 
+   <function name="NamedFramebufferDrawBuffers" offset="assign">
+      <param name="framebuffer" type="GLuint" />
+      <param name="n" type="GLsizei" />
+      <param name="bufs" type="const GLenum *" />
+   </function>
+
    <function name="NamedFramebufferReadBuffer" offset="assign">
       <param name="framebuffer" type="GLuint" />
       <param name="buf" type="GLenum" />

src/mesa/main/buffers.c

@@ -506,6 +506,26 @@ _mesa_DrawBuffers(GLsizei n, const GLenum *buffers)
 }
 
 
+void GLAPIENTRY
+_mesa_NamedFramebufferDrawBuffers(GLuint framebuffer, GLsizei n,
+                                  const GLenum *bufs)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_framebuffer *fb;
+
+   if (framebuffer) {
+      fb = _mesa_lookup_framebuffer_err(ctx, framebuffer,
+                                        "glNamedFramebufferDrawBuffers");
+      if (!fb)
+         return;
+   }
+   else
+      fb = ctx->WinSysDrawBuffer;
+
+   _mesa_draw_buffers(ctx, fb, n, bufs, "glNamedFramebufferDrawBuffers");
+}
+
+
 /**
  * Performs necessary state updates when _mesa_drawbuffers makes an
  * actual change.

src/mesa/main/buffers.h

@@ -55,6 +55,10 @@ _mesa_draw_buffers(struct gl_context *ctx, struct gl_framebuffer *fb,
 extern void GLAPIENTRY
 _mesa_DrawBuffers(GLsizei n, const GLenum *buffers);
 
+extern void GLAPIENTRY
+_mesa_NamedFramebufferDrawBuffers(GLuint framebuffer, GLsizei n,
+                                  const GLenum *bufs);
+
 extern void
 _mesa_drawbuffers(struct gl_context *ctx, struct gl_framebuffer *fb,
                   GLuint n, const GLenum *buffers,

src/mesa/main/tests/dispatch_sanity.cpp

@@ -986,6 +986,7 @@ const struct function gl_core_functions_possible[] = {
    { "glNamedFramebufferTexture", 45, -1 },
    { "glNamedFramebufferTextureLayer", 45, -1 },
    { "glNamedFramebufferDrawBuffer", 45, -1 },
+   { "glNamedFramebufferDrawBuffers", 45, -1 },
    { "glNamedFramebufferReadBuffer", 45, -1 },
    { "glInvalidateNamedFramebufferSubData", 45, -1 },
    { "glInvalidateNamedFramebufferData", 45, -1 },