3 files changed, 14 insertions, 8 deletions
diff --git a/src/mesa/main/blend.c b/src/mesa/main/blend.c
index 774fc888ec4..ee76b475943 100644
--- a/src/mesa/main/blend.c
+++ b/src/mesa/main/blend.c
@@ -769,7 +769,7 @@ _mesa_ClampColor(GLenum target, GLenum clamp)
       }
       FLUSH_VERTICES(ctx, _NEW_LIGHT);
       ctx->Light.ClampVertexColor = clamp;
-      _mesa_update_clamp_vertex_color(ctx);
+      _mesa_update_clamp_vertex_color(ctx, ctx->DrawBuffer);
       break;
    case GL_CLAMP_FRAGMENT_COLOR_ARB:
       if (ctx->API == API_OPENGL_CORE &&
@@ -814,9 +814,10 @@ _mesa_get_clamp_fragment_color(const struct gl_context *ctx)
 }
 
 GLboolean
-_mesa_get_clamp_vertex_color(const struct gl_context *ctx)
+_mesa_get_clamp_vertex_color(const struct gl_context *ctx,
+                             const struct gl_framebuffer *drawFb)
 {
-   return get_clamp_color(ctx->DrawBuffer, ctx->Light.ClampVertexColor);
+   return get_clamp_color(drawFb, ctx->Light.ClampVertexColor);
 }
 
 GLboolean
@@ -848,9 +849,11 @@ _mesa_update_clamp_fragment_color(struct gl_context *ctx)
  * Update the ctx->Color._ClampVertexColor field
  */
 void
-_mesa_update_clamp_vertex_color(struct gl_context *ctx)
+_mesa_update_clamp_vertex_color(struct gl_context *ctx,
+                                const struct gl_framebuffer *drawFb)
 {
-   ctx->Light._ClampVertexColor = _mesa_get_clamp_vertex_color(ctx);
+   ctx->Light._ClampVertexColor =
+         _mesa_get_clamp_vertex_color(ctx, drawFb);
 }
 
 /**
diff --git a/src/mesa/main/blend.h b/src/mesa/main/blend.h
index fe31a7440f0..9c1ef7e8592 100644
--- a/src/mesa/main/blend.h
+++ b/src/mesa/main/blend.h
@@ -37,6 +37,7 @@
 #include "formats.h"
 
 struct gl_context;
+struct gl_framebuffer;
 
 
 extern void GLAPIENTRY
@@ -104,7 +105,8 @@ extern GLboolean
 _mesa_get_clamp_fragment_color(const struct gl_context *ctx);
 
 extern GLboolean
-_mesa_get_clamp_vertex_color(const struct gl_context *ctx);
+_mesa_get_clamp_vertex_color(const struct gl_context *ctx,
+                             const struct gl_framebuffer *drawFb);
 
 extern GLboolean
 _mesa_get_clamp_read_color(const struct gl_context *ctx);
@@ -113,7 +115,8 @@ extern void
 _mesa_update_clamp_fragment_color(struct gl_context *ctx);
 
 extern void
-_mesa_update_clamp_vertex_color(struct gl_context *ctx);
+_mesa_update_clamp_vertex_color(struct gl_context *ctx,
+                                const struct gl_framebuffer *drawFb);
 
 extern mesa_format
 _mesa_get_render_format(const struct gl_context *ctx, mesa_format format);
diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c
index 74e5739e6fd..36a953988eb 100644
--- a/src/mesa/main/framebuffer.c
+++ b/src/mesa/main/framebuffer.c
@@ -691,7 +691,7 @@ _mesa_update_framebuffer(struct gl_context *ctx,
    if (readFb != drawFb)
       update_framebuffer(ctx, readFb);
 
-   _mesa_update_clamp_vertex_color(ctx);
+   _mesa_update_clamp_vertex_color(ctx, drawFb);
    _mesa_update_clamp_fragment_color(ctx);
 }