fix rgba pointer bug hit on zoomed+fogged glDrawPixels

2 files changed, 12 insertions, 12 deletions

diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index 431629efb1..9777391ded 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -1150,6 +1150,7 @@ convert_color_type(SWspan *span, GLenum newType, GLuint output)
                         span->end, span->array->mask);
 
    span->array->ChanType = newType;
+   span->array->rgba = dst;
 }
 
 
@@ -1234,7 +1235,8 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
    const GLbitfield origInterpMask = span->interpMask;
    const GLbitfield origArrayMask = span->arrayMask;
    const GLbitfield origArrayAttribs = span->arrayAttribs;
-   const GLenum chanType = span->array->ChanType;
+   const GLenum origChanType = span->array->ChanType;
+   void * const origRgba = span->array->rgba;
    const GLboolean shader = (ctx->FragmentProgram._Current
                              || ctx->ATIFragmentShader._Enabled);
    const GLboolean shaderOrTexture = shader || ctx->Texture._EnabledUnits;
@@ -1456,7 +1458,8 @@ end:
    span->interpMask = origInterpMask;
    span->arrayMask = origArrayMask;
    span->arrayAttribs = origArrayAttribs;
-   span->array->ChanType = chanType;
+   span->array->ChanType = origChanType;
+   span->array->rgba = origRgba;
 }
 
 
diff --git a/src/mesa/swrast/s_zoom.c b/src/mesa/swrast/s_zoom.c
index 1ab5911f2f..ab02e3fbb3 100644
--- a/src/mesa/swrast/s_zoom.c
+++ b/src/mesa/swrast/s_zoom.c
@@ -153,16 +153,13 @@ zoom_span( GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span,
    zoomed.end = zoomedWidth;
    zoomed.array = &zoomed_arrays;
    zoomed_arrays.ChanType = span->array->ChanType;
-   /* XXX temporary */
-#if CHAN_TYPE == GL_UNSIGNED_BYTE
-   zoomed_arrays.rgba = zoomed_arrays.rgba8;
-#elif CHAN_TYPE == GL_UNSIGNED_SHORT
-   zoomed_arrays.rgba = zoomed_arrays.rgba16;
-#else
-   zoomed_arrays.rgba = zoomed_arrays.attribs[FRAG_ATTRIB_COL0];
-#endif
-
-   /* copy attribute info (XXX copy all attribs?) */
+   if (zoomed_arrays.ChanType == GL_UNSIGNED_BYTE)
+      zoomed_arrays.rgba = (GLchan (*)[4]) zoomed_arrays.rgba8;
+   else if (zoomed_arrays.ChanType == GL_UNSIGNED_SHORT)
+      zoomed_arrays.rgba = (GLchan (*)[4]) zoomed_arrays.rgba16;
+   else
+      zoomed_arrays.rgba = (GLchan (*)[4]) zoomed_arrays.attribs[FRAG_ATTRIB_COL0];
+
    COPY_4V(zoomed.attrStart[FRAG_ATTRIB_WPOS], span->attrStart[FRAG_ATTRIB_WPOS]);
    COPY_4V(zoomed.attrStepX[FRAG_ATTRIB_WPOS], span->attrStepX[FRAG_ATTRIB_WPOS]);
    COPY_4V(zoomed.attrStepY[FRAG_ATTRIB_WPOS], span->attrStepY[FRAG_ATTRIB_WPOS]);