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authorBrian Paul <brian.paul@tungstengraphics.com>2003-01-16 18:57:44 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2003-01-16 18:57:44 +0000
commit1596bf398cdb4f791467ac89787f1268661af985 (patch)
tree7d961f6f20d0ae03ffc56542a41488eadc262e17 /src/mesa/swrast
parent08e1ef79ccaf98f64ee9f76c8a6e5a2405ce85ce (diff)
another fix for glDrawPixels + clipping
Diffstat (limited to 'src/mesa/swrast')
-rw-r--r--src/mesa/swrast/s_drawpix.c30
1 files changed, 21 insertions, 9 deletions
diff --git a/src/mesa/swrast/s_drawpix.c b/src/mesa/swrast/s_drawpix.c
index 9a75aa48b9..a69f3cc3c9 100644
--- a/src/mesa/swrast/s_drawpix.c
+++ b/src/mesa/swrast/s_drawpix.c
@@ -1,4 +1,4 @@
-/* $Id: s_drawpix.c,v 1.43 2003/01/15 23:46:34 brianp Exp $ */
+/* $Id: s_drawpix.c,v 1.44 2003/01/16 18:57:44 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -522,11 +522,11 @@ draw_index_pixels( GLcontext *ctx, GLint x, GLint y,
*/
skipPixels = 0;
while (skipPixels < width) {
- span.x = x + (zoom ? 0 : skipPixels);
- span.y = y;
- span.end = (width - skipPixels > MAX_WIDTH)
- ? MAX_WIDTH : (width - skipPixels);
- ASSERT(span.end <= MAX_WIDTH);
+ const GLint spanX = x + (zoom ? 0 : skipPixels);
+ GLint spanY = y;
+ const GLint spanEnd = (width - skipPixels > MAX_WIDTH)
+ ? MAX_WIDTH : (width - skipPixels);
+ ASSERT(spanEnd <= MAX_WIDTH);
for (row = 0; row < height; row++, span.y++) {
const GLvoid *source = _mesa_image_address(&ctx->Unpack, pixels,
width, height,
@@ -535,12 +535,18 @@ draw_index_pixels( GLcontext *ctx, GLint x, GLint y,
_mesa_unpack_index_span(ctx, span.end, GL_UNSIGNED_INT,
span.array->index, type, source, &ctx->Unpack,
ctx->_ImageTransferState);
+
+ /* These may get changed during writing/clipping */
+ span.x = spanX;
+ span.y = spanY;
+ span.end = spanEnd;
+
if (zoom)
_mesa_write_zoomed_index_span(ctx, &span, y, skipPixels);
else
_mesa_write_index_span(ctx, &span);
}
- skipPixels += span.end;
+ skipPixels += spanEnd;
}
}
@@ -733,7 +739,7 @@ draw_depth_pixels( GLcontext *ctx, GLint x, GLint y,
_mesa_write_index_span(ctx, &span);
}
}
- skipPixels += span.end;
+ skipPixels += spanEnd;
}
}
}
@@ -840,6 +846,8 @@ draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y,
* General solution
*/
{
+ const GLuint interpMask = span.interpMask;
+ const GLuint arrayMask = span.arrayMask;
GLint row, skipPixels = 0;
/* if the span is wider than MAX_WIDTH we have to do it in chunks */
@@ -860,6 +868,8 @@ draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y,
span.x = spanX;
span.y = spanY;
span.end = spanEnd;
+ span.arrayMask = arrayMask;
+ span.interpMask = interpMask;
_mesa_unpack_chan_color_span(ctx, span.end, GL_RGBA,
(GLchan *) span.array->rgba,
@@ -874,6 +884,7 @@ draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y,
_swrast_pixel_texture(ctx, &span);
}
+ /* draw the span */
if (quickDraw) {
(*swrast->Driver.WriteRGBASpan)(ctx, span.end, span.x, span.y,
(CONST GLchan (*)[4]) span.array->rgba, NULL);
@@ -886,7 +897,8 @@ draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y,
_mesa_write_rgba_span(ctx, &span);
}
}
- skipPixels += span.end;
+
+ skipPixels += spanEnd;
}
}