svn merge ^/branches/released . --username marha

1 files changed, 245 insertions, 0 deletions

diff --git a/mesalib/src/mesa/drivers/dri/common/stenciltmp.h b/mesalib/src/mesa/drivers/dri/common/stenciltmp.h
new file mode 100644
index 000000000..2b10b9ecf
--- /dev/null
+++ b/mesalib/src/mesa/drivers/dri/common/stenciltmp.h
@@ -0,0 +1,245 @@
+
+#include "spantmp_common.h"
+
+#ifndef DBG
+#define DBG 0
+#endif
+
+#ifndef HAVE_HW_STENCIL_SPANS
+#define HAVE_HW_STENCIL_SPANS 0
+#endif
+
+#ifndef HAVE_HW_STENCIL_PIXELS
+#define HAVE_HW_STENCIL_PIXELS 0
+#endif
+
+static void TAG(WriteStencilSpan)( GLcontext *ctx,
+                                   struct gl_renderbuffer *rb,
+				   GLuint n, GLint x, GLint y,
+				   const void *values, const GLubyte mask[] )
+{
+   HW_WRITE_LOCK()
+      {
+         const GLubyte *stencil = (const GLubyte *) values;
+	 GLint x1;
+	 GLint n1;
+	 LOCAL_STENCIL_VARS;
+
+	 y = Y_FLIP(y);
+
+#if HAVE_HW_STENCIL_SPANS
+	 (void) x1; (void) n1;
+
+	 if (DBG) fprintf(stderr, "WriteStencilSpan 0..%d (x1 %d)\n",
+			  (int)n1, (int)x1);
+
+	 WRITE_STENCIL_SPAN();
+#else /* HAVE_HW_STENCIL_SPANS */
+	 HW_CLIPLOOP() 
+	    {
+	       GLint i = 0;
+	       CLIPSPAN(x,y,n,x1,n1,i);
+
+	       if (DBG) fprintf(stderr, "WriteStencilSpan %d..%d (x1 %d)\n",
+				(int)i, (int)n1, (int)x1);
+
+	       if (mask)
+	       {
+		  for (;n1>0;i++,x1++,n1--)
+		     if (mask[i])
+			WRITE_STENCIL( x1, y, stencil[i] );
+	       }
+	       else
+	       {
+		  for (;n1>0;i++,x1++,n1--)
+		     WRITE_STENCIL( x1, y, stencil[i] );
+	       }
+	    }
+	 HW_ENDCLIPLOOP();
+#endif /* !HAVE_HW_STENCIL_SPANS */
+      }
+   HW_WRITE_UNLOCK();
+}
+
+#if HAVE_HW_STENCIL_SPANS
+/* implement MonoWriteDepthSpan() in terms of WriteDepthSpan() */
+static void
+TAG(WriteMonoStencilSpan)( GLcontext *ctx, struct gl_renderbuffer *rb,
+                           GLuint n, GLint x, GLint y,
+                           const void *value, const GLubyte mask[] )
+{
+   const GLuint stenVal = *((GLuint *) value);
+   GLuint stens[MAX_WIDTH];
+   GLuint i;
+   for (i = 0; i < n; i++)
+      stens[i] = stenVal;
+   TAG(WriteStencilSpan)(ctx, rb, n, x, y, stens, mask);
+}
+#else /* HAVE_HW_STENCIL_SPANS */
+static void TAG(WriteMonoStencilSpan)( GLcontext *ctx,
+                                       struct gl_renderbuffer *rb,
+                                       GLuint n, GLint x, GLint y,
+                                       const void *value,
+                                       const GLubyte mask[] )
+{
+   HW_WRITE_LOCK()
+      {
+         const GLubyte stencil = *((const GLubyte *) value);
+	 GLint x1;
+	 GLint n1;
+	 LOCAL_STENCIL_VARS;
+
+	 y = Y_FLIP(y);
+
+	 HW_CLIPLOOP() 
+	    {
+	       GLint i = 0;
+	       CLIPSPAN(x,y,n,x1,n1,i);
+
+	       if (DBG) fprintf(stderr, "WriteStencilSpan %d..%d (x1 %d)\n",
+				(int)i, (int)n1, (int)x1);
+
+	       if (mask)
+	       {
+		  for (;n1>0;i++,x1++,n1--)
+		     if (mask[i])
+			WRITE_STENCIL( x1, y, stencil );
+	       }
+	       else
+	       {
+		  for (;n1>0;i++,x1++,n1--)
+		     WRITE_STENCIL( x1, y, stencil );
+	       }
+	    }
+	 HW_ENDCLIPLOOP();
+      }
+   HW_WRITE_UNLOCK();
+}
+#endif /* !HAVE_HW_STENCIL_SPANS */
+
+
+static void TAG(WriteStencilPixels)( GLcontext *ctx,
+                                     struct gl_renderbuffer *rb,
+				     GLuint n,
+				     const GLint x[], const GLint y[],
+				     const void *values, const GLubyte mask[] )
+{
+   HW_WRITE_LOCK()
+      {
+         const GLubyte *stencil = (const GLubyte *) values;
+	 GLuint i;
+	 LOCAL_STENCIL_VARS;
+
+	 if (DBG) fprintf(stderr, "WriteStencilPixels\n");
+
+#if HAVE_HW_STENCIL_PIXELS
+	 (void) i;
+
+	 WRITE_STENCIL_PIXELS();
+#else /* HAVE_HW_STENCIL_PIXELS */
+	 HW_CLIPLOOP()
+	    {
+	       for (i=0;i<n;i++)
+	       {
+		  if (mask[i]) {
+		     const int fy = Y_FLIP(y[i]);
+		     if (CLIPPIXEL(x[i],fy))
+			WRITE_STENCIL( x[i], fy, stencil[i] );
+		  }
+	       }
+	    }
+	 HW_ENDCLIPLOOP();
+#endif /* !HAVE_HW_STENCIL_PIXELS */
+      }
+   HW_WRITE_UNLOCK();
+}
+
+
+/* Read stencil spans and pixels
+ */
+static void TAG(ReadStencilSpan)( GLcontext *ctx,
+                                  struct gl_renderbuffer *rb,
+				  GLuint n, GLint x, GLint y,
+				  void *values)
+{
+   HW_READ_LOCK()
+      {
+         GLubyte *stencil = (GLubyte *) values;
+	 GLint x1,n1;
+	 LOCAL_STENCIL_VARS;
+
+	 y = Y_FLIP(y);
+
+	 if (DBG) fprintf(stderr, "ReadStencilSpan\n");
+
+#if HAVE_HW_STENCIL_SPANS
+	 (void) x1; (void) n1;
+
+	 READ_STENCIL_SPAN();
+#else /* HAVE_HW_STENCIL_SPANS */
+	 HW_CLIPLOOP() 
+	    {
+	       GLint i = 0;
+	       CLIPSPAN(x,y,n,x1,n1,i);
+	       for (;n1>0;i++,n1--)
+		  READ_STENCIL( stencil[i], (x+i), y );
+	    }
+	 HW_ENDCLIPLOOP();
+#endif /* !HAVE_HW_STENCIL_SPANS */
+      }
+   HW_READ_UNLOCK();
+}
+
+static void TAG(ReadStencilPixels)( GLcontext *ctx,
+                                    struct gl_renderbuffer *rb,
+                                    GLuint n, const GLint x[], const GLint y[],
+				    void *values )
+{
+   HW_READ_LOCK()
+      {
+         GLubyte *stencil = (GLubyte *) values;
+	 GLuint i;
+	 LOCAL_STENCIL_VARS;
+
+	 if (DBG) fprintf(stderr, "ReadStencilPixels\n");
+ 
+#if HAVE_HW_STENCIL_PIXELS
+	 (void) i;
+
+	 READ_STENCIL_PIXELS();
+#else /* HAVE_HW_STENCIL_PIXELS */
+	 HW_CLIPLOOP()
+	    {
+	       for (i=0;i<n;i++) {
+		  int fy = Y_FLIP( y[i] );
+		  if (CLIPPIXEL( x[i], fy ))
+		     READ_STENCIL( stencil[i], x[i], fy );
+	       }
+	    }
+	 HW_ENDCLIPLOOP();
+#endif /* !HAVE_HW_STENCIL_PIXELS */
+      }
+   HW_READ_UNLOCK();
+}
+
+
+
+/**
+ * Initialize the given renderbuffer's span routines to point to
+ * the stencil functions we generated above.
+ */
+static void TAG(InitStencilPointers)(struct gl_renderbuffer *rb)
+{
+   rb->GetRow = TAG(ReadStencilSpan);
+   rb->GetValues = TAG(ReadStencilPixels);
+   rb->PutRow = TAG(WriteStencilSpan);
+   rb->PutRowRGB = NULL;
+   rb->PutMonoRow = TAG(WriteMonoStencilSpan);
+   rb->PutValues = TAG(WriteStencilPixels);
+   rb->PutMonoValues = NULL;
+}
+
+
+#undef WRITE_STENCIL
+#undef READ_STENCIL
+#undef TAG