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authorBrian Paul <[email protected]>2004-09-24 14:30:13 +0000
committerBrian Paul <[email protected]>2004-09-24 14:30:13 +0000
commit328a039413fd2b8649511f1ca130df2a59f2c71c (patch)
treef0739e2a41ee9ced641f6b2c3a9137d708e0899e /src/mesa
parentd9873c59ef4d14b5e3137cb2d7c765797f82ac56 (diff)
patches for clearing hw depth buffers from software fallback (Nicolai Haehnle)
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/drivers/dri/common/depthtmp.h36
-rw-r--r--src/mesa/drivers/dri/common/spantmp.h62
-rw-r--r--src/mesa/swrast/s_depth.c22
-rw-r--r--src/mesa/swrast/swrast.h7
4 files changed, 117 insertions, 10 deletions
diff --git a/src/mesa/drivers/dri/common/depthtmp.h b/src/mesa/drivers/dri/common/depthtmp.h
index f3da61e5199..74ebd6d5e52 100644
--- a/src/mesa/drivers/dri/common/depthtmp.h
+++ b/src/mesa/drivers/dri/common/depthtmp.h
@@ -64,6 +64,42 @@ static void TAG(WriteDepthSpan)( GLcontext *ctx,
HW_WRITE_UNLOCK();
}
+static void TAG(WriteMonoDepthSpan)( GLcontext *ctx,
+ GLuint n, GLint x, GLint y,
+ const GLdepth depth,
+ const GLubyte mask[] )
+{
+ HW_WRITE_LOCK()
+ {
+ GLint x1;
+ GLint n1;
+ LOCAL_DEPTH_VARS;
+
+ y = Y_FLIP( y );
+
+ HW_CLIPLOOP()
+ {
+ GLint i = 0;
+ CLIPSPAN( x, y, n, x1, n1, i );
+
+ if ( DBG ) fprintf( stderr, "%s %d..%d (x1 %d) = %u\n",
+ __FUNCTION__, (int)i, (int)n1, (int)x1, (uint)depth );
+
+ if ( mask ) {
+ for ( ; i < n1 ; i++, x1++ ) {
+ if ( mask[i] ) WRITE_DEPTH( x1, y, depth );
+ }
+ } else {
+ for ( ; i < n1 ; i++, x1++ ) {
+ WRITE_DEPTH( x1, y, depth );
+ }
+ }
+ }
+ HW_ENDCLIPLOOP();
+ }
+ HW_WRITE_UNLOCK();
+}
+
static void TAG(WriteDepthPixels)( GLcontext *ctx,
GLuint n,
const GLint x[],
diff --git a/src/mesa/drivers/dri/common/spantmp.h b/src/mesa/drivers/dri/common/spantmp.h
index 888be0465e5..39d0221bbee 100644
--- a/src/mesa/drivers/dri/common/spantmp.h
+++ b/src/mesa/drivers/dri/common/spantmp.h
@@ -123,15 +123,29 @@ static void TAG(WriteRGBAPixels)( const GLcontext *ctx,
HW_WRITE_CLIPLOOP()
{
- for (i=0;i<n;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_RGBA( x[i], fy,
+ rgba[i][0], rgba[i][1],
+ rgba[i][2], rgba[i][3] );
+ }
+ }
+ }
+ else
{
- if (mask[i]) {
+ for (i=0;i<n;i++)
+ {
const int fy = Y_FLIP(y[i]);
if (CLIPPIXEL(x[i],fy))
WRITE_RGBA( x[i], fy,
rgba[i][0], rgba[i][1],
rgba[i][2], rgba[i][3] );
- }
+ }
}
}
HW_ENDCLIPLOOP();
@@ -160,9 +174,17 @@ static void TAG(WriteMonoRGBASpan)( const GLcontext *ctx,
{
GLint i = 0;
CLIPSPAN(x,y,n,x1,n1,i);
- for (;n1>0;i++,x1++,n1--)
- if (mask[i])
+ if (mask)
+ {
+ for (;n1>0;i++,x1++,n1--)
+ if (mask[i])
+ WRITE_PIXEL( x1, y, p );
+ }
+ else
+ {
+ for (;n1>0;i++,x1++,n1--)
WRITE_PIXEL( x1, y, p );
+ }
}
HW_ENDCLIPLOOP();
}
@@ -186,12 +208,23 @@ static void TAG(WriteMonoRGBAPixels)( const GLcontext *ctx,
HW_WRITE_CLIPLOOP()
{
- for (i=0;i<n;i++)
- if (mask[i]) {
+ if (mask)
+ {
+ for (i=0;i<n;i++)
+ if (mask[i]) {
+ int fy = Y_FLIP(y[i]);
+ if (CLIPPIXEL( x[i], fy ))
+ WRITE_PIXEL( x[i], fy, p );
+ }
+ }
+ else
+ {
+ for (i=0;i<n;i++) {
int fy = Y_FLIP(y[i]);
if (CLIPPIXEL( x[i], fy ))
WRITE_PIXEL( x[i], fy, p );
}
+ }
}
HW_ENDCLIPLOOP();
}
@@ -238,12 +271,23 @@ static void TAG(ReadRGBAPixels)( const GLcontext *ctx,
HW_READ_CLIPLOOP()
{
- for (i=0;i<n;i++)
- if (mask[i]) {
+ if (mask)
+ {
+ for (i=0;i<n;i++)
+ if (mask[i]) {
+ int fy = Y_FLIP( y[i] );
+ if (CLIPPIXEL( x[i], fy ))
+ READ_RGBA( rgba[i], x[i], fy );
+ }
+ }
+ else
+ {
+ for (i=0;i<n;i++) {
int fy = Y_FLIP( y[i] );
if (CLIPPIXEL( x[i], fy ))
READ_RGBA( rgba[i], x[i], fy );
}
+ }
}
HW_ENDCLIPLOOP();
}
diff --git a/src/mesa/swrast/s_depth.c b/src/mesa/swrast/s_depth.c
index fc242be2aab..34897ba931b 100644
--- a/src/mesa/swrast/s_depth.c
+++ b/src/mesa/swrast/s_depth.c
@@ -1665,13 +1665,33 @@ _swrast_alloc_depth_buffer( GLframebuffer *buffer )
void
_swrast_clear_depth_buffer( GLcontext *ctx )
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
if (ctx->Visual.depthBits == 0
- || !ctx->DrawBuffer->DepthBuffer
|| !ctx->Depth.Mask) {
/* no depth buffer, or writing to it is disabled */
return;
}
+ if (swrast->Driver.WriteMonoDepthSpan) {
+ const GLdepth clearValue = (GLdepth)(ctx->Depth.Clear * ctx->DepthMax);
+ const GLint x = ctx->DrawBuffer->_Xmin;
+ const GLint y = ctx->DrawBuffer->_Ymin;
+ const GLint height = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin;
+ const GLint width = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin;
+ GLint i;
+
+ for (i = 0; i < height; i++) {
+ (*swrast->Driver.WriteMonoDepthSpan)( ctx, width, x, y + i,
+ clearValue, NULL );
+ }
+
+ return;
+ }
+
+ if (!ctx->DrawBuffer->DepthBuffer)
+ return;
+
/* The loops in this function have been written so the IRIX 5.3
* C compiler can unroll them. Hopefully other compilers can too!
*/
diff --git a/src/mesa/swrast/swrast.h b/src/mesa/swrast/swrast.h
index 9447e998808..7fb0d2a389c 100644
--- a/src/mesa/swrast/swrast.h
+++ b/src/mesa/swrast/swrast.h
@@ -403,6 +403,13 @@ struct swrast_device_driver {
* depth[i] value if mask[i] is nonzero.
*/
+ void (*WriteMonoDepthSpan)( GLcontext *ctx, GLuint n, GLint x, GLint y,
+ const GLdepth depth, const GLubyte mask[] );
+ /* Write a horizontal run of depth values.
+ * If mask is NULL, draw all pixels.
+ * If mask is not null, only draw pixel [i] when mask [i] is true.
+ */
+
void (*ReadDepthSpan)( GLcontext *ctx, GLuint n, GLint x, GLint y,
GLdepth depth[] );
/* Read a horizontal span of values from the depth buffer.