-/* $XFree86: xc/lib/GL/mesa/src/drv/common/depthtmp.h,v 1.5 2001/03/21 16:14:20 dawes Exp $ */
+
+/*
+ * Notes:
+ * 1. These functions plug into the gl_renderbuffer structure.
+ * 2. The 'values' parameter always points to GLuint values, regardless of
+ * the actual Z buffer depth.
+ */
+
+
+#include "spantmp_common.h"
#ifndef DBG
#define DBG 0
#endif
-
#ifndef HAVE_HW_DEPTH_SPANS
#define HAVE_HW_DEPTH_SPANS 0
#endif
+
#ifndef HAVE_HW_DEPTH_PIXELS
#define HAVE_HW_DEPTH_PIXELS 0
#endif
-#ifndef HW_READ_LOCK
-#define HW_READ_LOCK() HW_LOCK()
-#endif
-#ifndef HW_READ_UNLOCK
-#define HW_READ_UNLOCK() HW_UNLOCK()
-#endif
-
-static void TAG(WriteDepthSpan)( GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- const GLdepth *depth,
+static void TAG(WriteDepthSpan)( struct gl_context *ctx,
+ struct gl_renderbuffer *rb,
+ GLuint n, GLint x, GLint y,
+ const void *values,
const GLubyte mask[] )
{
HW_WRITE_LOCK()
{
+ const VALUE_TYPE *depth = (const VALUE_TYPE *) values;
GLint x1;
GLint n1;
LOCAL_DEPTH_VARS;
GLint i = 0;
CLIPSPAN( x, y, n, x1, n1, i );
- if ( DBG ) fprintf( stderr, "WriteDepthSpan %d..%d (x1 %d)\n",
- (int)i, (int)n1, (int)x1 );
+ if ( DBG ) fprintf( stderr, "WriteDepthSpan %d..%d (x1 %d) (mask %p)\n",
+ (int)i, (int)n1, (int)x1, mask );
if ( mask ) {
- for ( ; i < n1 ; i++, x1++ ) {
+ for ( ; n1>0 ; i++, x1++, n1-- ) {
if ( mask[i] ) WRITE_DEPTH( x1, y, depth[i] );
}
} else {
- for ( ; i < n1 ; i++, x1++ ) {
+ for ( ; n1>0 ; i++, x1++, n1-- ) {
WRITE_DEPTH( x1, y, depth[i] );
}
}
HW_WRITE_UNLOCK();
}
-#if !HAVE_HW_DEPTH_SPANS
-static void TAG(WriteMonoDepthSpan)( GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- const GLdepth depth,
- const GLubyte mask[] )
+
+#if HAVE_HW_DEPTH_SPANS
+/* implement MonoWriteDepthSpan() in terms of WriteDepthSpan() */
+static void
+TAG(WriteMonoDepthSpan)( struct gl_context *ctx, struct gl_renderbuffer *rb,
+ GLuint n, GLint x, GLint y,
+ const void *value, const GLubyte mask[] )
+{
+ const GLuint depthVal = *((GLuint *) value);
+ GLuint depths[MAX_WIDTH];
+ GLuint i;
+ for (i = 0; i < n; i++)
+ depths[i] = depthVal;
+ TAG(WriteDepthSpan)(ctx, rb, n, x, y, depths, mask);
+}
+#else
+static void TAG(WriteMonoDepthSpan)( struct gl_context *ctx,
+ struct gl_renderbuffer *rb,
+ GLuint n, GLint x, GLint y,
+ const void *value,
+ const GLubyte mask[] )
{
HW_WRITE_LOCK()
{
+ const GLuint depth = *((GLuint *) value);
GLint x1;
GLint n1;
LOCAL_DEPTH_VARS;
__FUNCTION__, (int)i, (int)n1, (int)x1, (GLuint)depth );
if ( mask ) {
- for ( ; i < n1 ; i++, x1++ ) {
+ for ( ; n1>0 ; i++, x1++, n1-- ) {
if ( mask[i] ) WRITE_DEPTH( x1, y, depth );
}
} else {
- for ( ; i < n1 ; i++, x1++ ) {
+ for ( ; n1>0 ; x1++, n1-- ) {
WRITE_DEPTH( x1, y, depth );
}
}
}
#endif
-static void TAG(WriteDepthPixels)( GLcontext *ctx,
+
+static void TAG(WriteDepthPixels)( struct gl_context *ctx,
+ struct gl_renderbuffer *rb,
GLuint n,
const GLint x[],
const GLint y[],
- const GLdepth depth[],
+ const void *values,
const GLubyte mask[] )
{
HW_WRITE_LOCK()
{
- GLint i;
+ const VALUE_TYPE *depth = (const VALUE_TYPE *) values;
+ GLuint i;
LOCAL_DEPTH_VARS;
if ( DBG ) fprintf( stderr, "WriteDepthPixels\n" );
#else
HW_CLIPLOOP()
{
- for ( i = 0 ; i < n ; i++ ) {
- if ( mask[i] ) {
+ if ( mask ) {
+ for ( i = 0 ; i < n ; i++ ) {
+ if ( mask[i] ) {
+ const int fy = Y_FLIP( y[i] );
+ if ( CLIPPIXEL( x[i], fy ) )
+ WRITE_DEPTH( x[i], fy, depth[i] );
+ }
+ }
+ }
+ else {
+ for ( i = 0 ; i < n ; i++ ) {
const int fy = Y_FLIP( y[i] );
if ( CLIPPIXEL( x[i], fy ) )
WRITE_DEPTH( x[i], fy, depth[i] );
/* Read depth spans and pixels
*/
-static void TAG(ReadDepthSpan)( GLcontext *ctx,
+static void TAG(ReadDepthSpan)( struct gl_context *ctx,
+ struct gl_renderbuffer *rb,
GLuint n, GLint x, GLint y,
- GLdepth depth[] )
+ void *values )
{
HW_READ_LOCK()
{
+ VALUE_TYPE *depth = (VALUE_TYPE *) values;
GLint x1, n1;
LOCAL_DEPTH_VARS;
{
GLint i = 0;
CLIPSPAN( x, y, n, x1, n1, i );
- for ( ; i < n1 ; i++ )
- READ_DEPTH( depth[i], (x1+i), y );
+ for ( ; n1>0 ; i++, n1-- ) {
+ READ_DEPTH( depth[i], x+i, y );
+ }
}
HW_ENDCLIPLOOP();
#endif
HW_READ_UNLOCK();
}
-static void TAG(ReadDepthPixels)( GLcontext *ctx, GLuint n,
+static void TAG(ReadDepthPixels)( struct gl_context *ctx,
+ struct gl_renderbuffer *rb,
+ GLuint n,
const GLint x[], const GLint y[],
- GLdepth depth[] )
+ void *values )
{
HW_READ_LOCK()
{
- GLint i;
+ VALUE_TYPE *depth = (VALUE_TYPE *) values;
+ GLuint i;
LOCAL_DEPTH_VARS;
if ( DBG ) fprintf( stderr, "ReadDepthPixels\n" );
}
+/**
+ * Initialize the given renderbuffer's span routines to point to
+ * the depth/z functions we generated above.
+ */
+static void TAG(InitDepthPointers)(struct gl_renderbuffer *rb)
+{
+ rb->GetRow = TAG(ReadDepthSpan);
+ rb->GetValues = TAG(ReadDepthPixels);
+ rb->PutRow = TAG(WriteDepthSpan);
+ rb->PutRowRGB = NULL;
+ rb->PutMonoRow = TAG(WriteMonoDepthSpan);
+ rb->PutValues = TAG(WriteDepthPixels);
+ rb->PutMonoValues = NULL;
+}
+
+
#if HAVE_HW_DEPTH_SPANS
#undef WRITE_DEPTH_SPAN
#undef WRITE_DEPTH_PIXELS
#undef READ_DEPTH
#endif
#undef TAG
+#undef VALUE_TYPE
projects / mesa.git / blobdiff