1 files changed, 21 insertions, 14 deletions

diff --git a/dist/Mesa/src/mesa/swrast/s_span.c b/dist/Mesa/src/mesa/swrast/s_span.c
index 4c58f8de8..f07014fab 100644
--- a/dist/Mesa/src/mesa/swrast/s_span.c
+++ b/dist/Mesa/src/mesa/swrast/s_span.c
@@ -30,12 +30,12 @@
  * \author Brian Paul
  */
 
-#include "glheader.h"
-#include "colormac.h"
-#include "context.h"
-#include "macros.h"
-#include "imports.h"
-#include "image.h"
+#include "main/glheader.h"
+#include "main/colormac.h"
+#include "main/context.h"
+#include "main/macros.h"
+#include "main/imports.h"
+#include "main/image.h"
 
 #include "s_atifragshader.h"
 #include "s_alpha.h"
@@ -442,11 +442,10 @@ _swrast_span_interpolate_z( const GLcontext *ctx, SWspan *span )
  * Compute mipmap LOD from partial derivatives.
  * This the ideal solution, as given in the OpenGL spec.
  */
-#if 0
-static GLfloat
-compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy,
-               GLfloat dqdx, GLfloat dqdy, GLfloat texW, GLfloat texH,
-               GLfloat s, GLfloat t, GLfloat q, GLfloat invQ)
+GLfloat
+_swrast_compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy,
+                       GLfloat dqdx, GLfloat dqdy, GLfloat texW, GLfloat texH,
+                       GLfloat s, GLfloat t, GLfloat q, GLfloat invQ)
 {
    GLfloat dudx = texW * ((s + dsdx) / (q + dqdx) - s * invQ);
    GLfloat dvdx = texH * ((t + dtdx) / (q + dqdx) - t * invQ);
@@ -458,13 +457,13 @@ compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy,
    GLfloat lambda = LOG2(rho);
    return lambda;
 }
-#endif
 
 
 /**
  * Compute mipmap LOD from partial derivatives.
  * This is a faster approximation than above function.
  */
+#if 0
 GLfloat
 _swrast_compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy,
                      GLfloat dqdx, GLfloat dqdy, GLfloat texW, GLfloat texH,
@@ -485,6 +484,7 @@ _swrast_compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy,
    lambda = LOG2(rho);
    return lambda;
 }
+#endif
 
 
 /**
@@ -1032,6 +1032,7 @@ add_specular(GLcontext *ctx, SWspan *span)
    ASSERT(!ctx->FragmentProgram._Current);
    ASSERT(span->arrayMask & SPAN_RGBA);
    ASSERT(swrast->_ActiveAttribMask & FRAG_BIT_COL1);
+   (void) swrast; /* silence warning */
 
    if (span->array->ChanType == GL_FLOAT) {
       if ((span->arrayAttribs & FRAG_BIT_COL0) == 0) {
@@ -1398,11 +1399,17 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
    }
 
    /*
-    * Write to renderbuffers
+    * Write to renderbuffers.
+    * Depending on glDrawBuffer() state and the which color outputs are
+    * written by the fragment shader, we may either replicate one color to
+    * all renderbuffers or write a different color to each renderbuffer.
+    * multiFragOutputs=TRUE for the later case.
     */
    {
       const GLuint numBuffers = fb->_NumColorDrawBuffers;
-      const GLboolean multiFragOutputs = numBuffers > 1;
+      const struct gl_fragment_program *fp = ctx->FragmentProgram._Current;
+      const GLboolean multiFragOutputs = 
+         (fp && fp->Base.OutputsWritten >= (1 << FRAG_RESULT_DATA0));
       GLuint buf;
 
       for (buf = 0; buf < numBuffers; buf++) {