Merge branch 'gallium-0.1' into gallium-0.2

[mesa.git] / src / mesa / swrast / s_context.c

diff --git a/src/mesa/swrast/s_context.c b/src/mesa/swrast/s_context.c
index 4d9b956f856ae9c8576c76fc767c125e86104bef..2dea89539923ad8af6416651e021adc052ede246 100644 (file)
--- a/src/mesa/swrast/s_context.c
+++ b/src/mesa/swrast/s_context.c
@@ -2,7 +2,7 @@
  * Mesa 3-D graphics library
  * Version:  7.1
  *
- * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -33,6 +33,7 @@
 #include "main/mtypes.h"
 #include "teximage.h"
 #include "swrast.h"
+#include "shader/prog_parameter.h"
 #include "shader/prog_statevars.h"
 #include "s_blend.h"
 #include "s_context.h"
@@ -87,7 +88,7 @@ _swrast_update_rasterflags( GLcontext *ctx )
     * MULTI_DRAW_BIT flag.  Also set it if we're drawing to no
     * buffers or the RGBA or CI mask disables all writes.
     */
-   if (ctx->DrawBuffer->_NumColorDrawBuffers[0] != 1) {
+   if (ctx->DrawBuffer->_NumColorDrawBuffers != 1) {
       /* more than one color buffer designated for writing (or zero buffers) */
       rasterMask |= MULTI_DRAW_BIT;
    }
@@ -117,8 +118,8 @@ _swrast_update_rasterflags( GLcontext *ctx )
 
 
 /**
- * Examine polycon culls tate to compute the _BackfaceSign field.
- * _BackfaceSign will be 0 if no culling, -1 if culling back-faces,
+ * Examine polygon cull state to compute the _BackfaceCullSign field.
+ * _BackfaceCullSign will be 0 if no culling, -1 if culling back-faces,
  * and 1 if culling front-faces.  The Polygon FrontFace state also
  * factors in.
  */
@@ -128,31 +129,32 @@ _swrast_update_polygon( GLcontext *ctx )
    GLfloat backface_sign;
 
    if (ctx->Polygon.CullFlag) {
-      backface_sign = 1.0;
       switch (ctx->Polygon.CullFaceMode) {
       case GL_BACK:
-        if (ctx->Polygon.FrontFace == GL_CCW)
-           backface_sign = -1.0;
+         backface_sign = -1.0;
         break;
       case GL_FRONT:
-        if (ctx->Polygon.FrontFace != GL_CCW)
-           backface_sign = -1.0;
+         backface_sign = 1.0;
         break;
       case GL_FRONT_AND_BACK:
          /* fallthrough */
       default:
         backface_sign = 0.0;
-        break;
       }
    }
    else {
       backface_sign = 0.0;
    }
 
-   SWRAST_CONTEXT(ctx)->_BackfaceSign = backface_sign;
+   SWRAST_CONTEXT(ctx)->_BackfaceCullSign = backface_sign;
+
+   /* This is for front/back-face determination, but not for culling */
+   SWRAST_CONTEXT(ctx)->_BackfaceSign
+      = (ctx->Polygon.FrontFace == GL_CW) ? -1.0 : 1.0;
 }
 
 
+
 /**
  * Update the _PreferPixelFog field to indicate if we need to compute
  * fog blend factors (from the fog coords) per-fragment.
@@ -500,6 +502,13 @@ _swrast_invalidate_state( GLcontext *ctx, GLbitfield new_state )
       new_state = ~0;
    }
 
+   {
+      const struct gl_fragment_program *fp = ctx->FragmentProgram._Current;
+      if (fp && (fp->Base.Parameters->StateFlags & new_state)) {
+         _mesa_load_state_parameters(ctx, fp->Base.Parameters);
+      }
+   }
+
    if (new_state & swrast->InvalidateTriangleMask)
       swrast->Triangle = _swrast_validate_triangle;
 
@@ -598,44 +607,6 @@ _swrast_update_active_attribs(GLcontext *ctx)
 }
 
 
-/**
- * Update the swrast->_ColorOutputsMask which indicates which color
- * renderbuffers (aka rendertargets) are being written to by the current
- * fragment program.
- * We also take glDrawBuffers() into account to skip outputs that are
- * set to GL_NONE.
- */
-static void
-_swrast_update_color_outputs(GLcontext *ctx)
-{
-   SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   const struct gl_framebuffer *fb = ctx->DrawBuffer;
-
-   swrast->_ColorOutputsMask = 0;
-   swrast->_NumColorOutputs = 0;
-
-   if (ctx->FragmentProgram._Current) {
-      const GLbitfield outputsWritten
-         = ctx->FragmentProgram._Current->Base.OutputsWritten;
-      GLuint output;
-      for (output = 0; output < ctx->Const.MaxDrawBuffers; output++) {
-         if ((outputsWritten & (1 << (FRAG_RESULT_DATA0 + output)))
-             && (fb->_NumColorDrawBuffers[output] > 0)) {
-            swrast->_ColorOutputsMask |= (1 << output);
-            swrast->_NumColorOutputs = output + 1;
-         }
-      }
-   }
-   if (swrast->_ColorOutputsMask == 0x0) {
-      /* no fragment program, or frag prog didn't write to gl_FragData[] */
-      if (fb->_NumColorDrawBuffers[0] > 0) {
-         swrast->_ColorOutputsMask = 0x1;
-         swrast->_NumColorOutputs = 1;
-      }
-   }
-}
-
-
 void
 _swrast_validate_derived( GLcontext *ctx )
 {
@@ -685,9 +656,6 @@ _swrast_validate_derived( GLcontext *ctx )
                               _NEW_TEXTURE))
          _swrast_update_active_attribs(ctx);
 
-      if (swrast->NewState & (_NEW_PROGRAM | _NEW_BUFFERS))
-         _swrast_update_color_outputs(ctx);
-
       swrast->NewState = 0;
       swrast->StateChanges = 0;
       swrast->InvalidateState = _swrast_invalidate_state;
@@ -766,6 +734,12 @@ _swrast_ResetLineStipple( GLcontext *ctx )
    SWRAST_CONTEXT(ctx)->StippleCounter = 0;
 }
 
+void
+_swrast_SetFacing(GLcontext *ctx, GLuint facing)
+{
+   SWRAST_CONTEXT(ctx)->PointLineFacing = facing;
+}
+
 void
 _swrast_allow_vertex_fog( GLcontext *ctx, GLboolean value )
 {
@@ -869,6 +843,8 @@ _swrast_DestroyContext( GLcontext *ctx )
    }
 
    FREE( swrast->SpanArrays );
+   if (swrast->ZoomedArrays)
+      FREE( swrast->ZoomedArrays );
    FREE( swrast->TexelBuffer );
    FREE( swrast );