main: Add entry point for NamedFramebufferDrawBuffer.

[Fredrik: Fix the name of the buf parameter in the XML file]

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

src/mapi/glapi/gen/ARB_direct_state_access.xml

@@ -187,6 +187,11 @@
       <param name="layer" type="GLint" />
    </function>
 
+   <function name="NamedFramebufferDrawBuffer" offset="assign">
+      <param name="framebuffer" type="GLuint" />
+      <param name="buf" type="GLenum" />
+   </function>
+
    <function name="InvalidateNamedFramebufferData" offset="assign">
       <param name="framebuffer" type="GLuint" />
       <param name="numAttachments" type="GLsizei" />

src/mesa/main/buffers.c

@@ -297,6 +297,25 @@ _mesa_DrawBuffer(GLenum buffer)
 }
 
 
+void GLAPIENTRY
+_mesa_NamedFramebufferDrawBuffer(GLuint framebuffer, GLenum buf)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_framebuffer *fb;
+
+   if (framebuffer) {
+      fb = _mesa_lookup_framebuffer_err(ctx, framebuffer,
+                                        "glNamedFramebufferDrawBuffer");
+      if (!fb)
+         return;
+   }
+   else
+      fb = ctx->WinSysDrawBuffer;
+
+   _mesa_draw_buffer(ctx, fb, buf, "glNamedFramebufferDrawBuffer");
+}
+
+
 /**
  * Called by glDrawBuffersARB; specifies the destination color renderbuffers
  * for N fragment program color outputs.

src/mesa/main/buffers.h

@@ -45,6 +45,9 @@ _mesa_draw_buffer(struct gl_context *ctx, struct gl_framebuffer *fb,
 extern void GLAPIENTRY
 _mesa_DrawBuffer( GLenum mode );
 
+extern void GLAPIENTRY
+_mesa_NamedFramebufferDrawBuffer(GLuint framebuffer, GLenum buf);
+
 extern void GLAPIENTRY
 _mesa_DrawBuffers(GLsizei n, const GLenum *buffers);
 

src/mesa/main/tests/dispatch_sanity.cpp

@@ -985,6 +985,7 @@ const struct function gl_core_functions_possible[] = {
    { "glNamedFramebufferParameteri", 45, -1 },
    { "glNamedFramebufferTexture", 45, -1 },
    { "glNamedFramebufferTextureLayer", 45, -1 },
+   { "glNamedFramebufferDrawBuffer", 45, -1 },
    { "glInvalidateNamedFramebufferSubData", 45, -1 },
    { "glInvalidateNamedFramebufferData", 45, -1 },
    { "glClearNamedFramebufferiv", 45, -1 },