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-rw-r--r--src/mesa/swrast/s_drawpix.c288
-rw-r--r--src/mesa/swrast/s_zoom.c63
-rw-r--r--src/mesa/swrast/s_zoom.h15
3 files changed, 208 insertions, 158 deletions
diff --git a/src/mesa/swrast/s_drawpix.c b/src/mesa/swrast/s_drawpix.c
index 033a022905..b7ac3f7ade 100644
--- a/src/mesa/swrast/s_drawpix.c
+++ b/src/mesa/swrast/s_drawpix.c
@@ -1,8 +1,8 @@
-/* $Id: s_drawpix.c,v 1.40 2002/11/25 20:26:59 brianp Exp $ */
+/* $Id: s_drawpix.c,v 1.41 2002/12/05 04:48:53 brianp Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 5.0
+ * Version: 5.1
*
* Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
*
@@ -26,7 +26,6 @@
#include "glheader.h"
-#include "colormac.h"
#include "context.h"
#include "convolve.h"
#include "image.h"
@@ -40,7 +39,6 @@
#include "s_pixeltex.h"
#include "s_span.h"
#include "s_stencil.h"
-#include "s_texture.h"
#include "s_zoom.h"
@@ -193,7 +191,8 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
/* setup array of fragment Z value to pass to zoom function */
GLdepth z = (GLdepth) (ctx->Current.RasterPos[2] * ctx->DepthMaxF);
GLint i;
- ASSERT(drawWidth < MAX_WIDTH);
+ if (drawWidth < MAX_WIDTH)
+ return GL_FALSE; /* take the general path solution */
for (i=0; i<drawWidth; i++)
zSpan[i] = z;
@@ -243,7 +242,7 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
span.y = destY;
span.end = drawWidth;
_mesa_write_zoomed_rgba_span(ctx, &span,
- (CONST GLchan (*)[4]) src, zoomY0);
+ (CONST GLchan (*)[4]) src, zoomY0, 0);
src += rowLength * 4;
destY++;
}
@@ -283,7 +282,7 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
span.y = destY;
span.end = drawWidth;
_mesa_write_zoomed_rgb_span(ctx, &span,
- (CONST GLchan (*)[3]) src, zoomY0);
+ (CONST GLchan (*)[3]) src, zoomY0, 0);
src += rowLength * 3;
destY++;
}
@@ -308,7 +307,7 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
span.array->rgb[i][2] = src[i];
}
(*swrast->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[3]) span.array->rgb, NULL);
+ (CONST GLchan (*)[3]) span.array->rgb, NULL);
src += rowLength;
destY++;
}
@@ -326,7 +325,7 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
}
destY--;
(*swrast->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[3]) span.array->rgb, NULL);
+ (CONST GLchan (*)[3]) span.array->rgb, NULL);
src += rowLength;
}
}
@@ -345,7 +344,7 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
span.y = destY;
span.end = drawWidth;
_mesa_write_zoomed_rgb_span(ctx, &span,
- (CONST GLchan (*)[3]) span.array->rgb, zoomY0);
+ (CONST GLchan (*)[3]) span.array->rgb, zoomY0, 0);
src += rowLength;
destY++;
}
@@ -372,7 +371,7 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
span.array->rgba[i][3] = *ptr++;
}
(*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) span.array->rgba, NULL);
+ (CONST GLchan (*)[4]) span.array->rgba, NULL);
src += rowLength*2;
destY++;
}
@@ -392,7 +391,7 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
}
destY--;
(*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) span.array->rgba, NULL);
+ (CONST GLchan (*)[4]) span.array->rgba, NULL);
src += rowLength*2;
}
}
@@ -413,7 +412,7 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
span.y = destY;
span.end = drawWidth;
_mesa_write_zoomed_rgba_span(ctx, &span,
- (CONST GLchan (*)[4]) span.array->rgba, zoomY0);
+ (CONST GLchan (*)[4]) span.array->rgba, zoomY0, 0);
src += rowLength*2;
destY++;
}
@@ -432,7 +431,7 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
ASSERT(drawWidth < MAX_WIDTH);
_mesa_map_ci8_to_rgba(ctx, drawWidth, src, span.array->rgba);
(*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (const GLchan (*)[4]) span.array->rgba, NULL);
+ (const GLchan (*)[4]) span.array->rgba, NULL);
src += rowLength;
destY++;
}
@@ -461,7 +460,7 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
span.y = destY;
span.end = drawWidth;
_mesa_write_zoomed_rgba_span(ctx, &span,
- (CONST GLchan (*)[4]) span.array->rgba, zoomY0);
+ (CONST GLchan (*)[4]) span.array->rgba, zoomY0, 0);
src += rowLength;
destY++;
}
@@ -500,7 +499,7 @@ fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
/*
- * Do glDrawPixels of index pixels.
+ * Draw color index image.
*/
static void
draw_index_pixels( GLcontext *ctx, GLint x, GLint y,
@@ -508,11 +507,10 @@ draw_index_pixels( GLcontext *ctx, GLint x, GLint y,
GLenum type, const GLvoid *pixels )
{
const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
- const GLint desty = y;
- GLint row, drawWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
+ GLint row, skipPixels;
struct sw_span span;
- INIT_SPAN(span, GL_BITMAP, drawWidth, 0, SPAN_INDEX);
+ INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_INDEX);
if (ctx->Depth.Test)
_mesa_span_default_z(ctx, &span);
@@ -522,28 +520,34 @@ draw_index_pixels( GLcontext *ctx, GLint x, GLint y,
/*
* General solution
*/
- for (row = 0; row < height; row++, y++) {
- const GLvoid *source = _mesa_image_address(&ctx->Unpack,
- pixels, width, height, GL_COLOR_INDEX, type, 0, row, 0);
- _mesa_unpack_index_span(ctx, drawWidth, GL_UNSIGNED_INT,
- span.array->index,
- type, source, &ctx->Unpack,
- ctx->_ImageTransferState);
- span.x = x;
+ skipPixels = 0;
+ while (skipPixels < width) {
+ span.x = x + (zoom ? 0 : skipPixels);
span.y = y;
- span.end = drawWidth;
- if (zoom)
- _mesa_write_zoomed_index_span(ctx, &span, desty);
- else
- _mesa_write_index_span(ctx, &span);
+ span.end = (width - skipPixels > MAX_WIDTH)
+ ? MAX_WIDTH : (width - skipPixels);
+ ASSERT(span.end <= MAX_WIDTH);
+ for (row = 0; row < height; row++, span.y++) {
+ const GLvoid *source = _mesa_image_address(&ctx->Unpack, pixels,
+ width, height,
+ GL_COLOR_INDEX, type,
+ 0, row, skipPixels);
+ _mesa_unpack_index_span(ctx, span.end, GL_UNSIGNED_INT,
+ span.array->index, type, source, &ctx->Unpack,
+ ctx->_ImageTransferState);
+ if (zoom)
+ _mesa_write_zoomed_index_span(ctx, &span, y, skipPixels);
+ else
+ _mesa_write_index_span(ctx, &span);
+ }
+ skipPixels += span.end;
}
}
/*
- * Do glDrawPixels of stencil image. The image datatype may either
- * be GLubyte or GLbitmap.
+ * Draw stencil image.
*/
static void
draw_stencil_pixels( GLcontext *ctx, GLint x, GLint y,
@@ -552,7 +556,7 @@ draw_stencil_pixels( GLcontext *ctx, GLint x, GLint y,
{
const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
const GLint desty = y;
- GLint row, drawWidth;
+ GLint row, skipPixels;
if (type != GL_BYTE &&
type != GL_UNSIGNED_BYTE &&
@@ -571,37 +575,48 @@ draw_stencil_pixels( GLcontext *ctx, GLint x, GLint y,
return;
}
- drawWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
+ /* if width > MAX_WIDTH, have to process image in chunks */
+ skipPixels = 0;
+ while (skipPixels < width) {
+ GLint spanX = x;
+ GLint spanY = y;
+ GLint spanWidth = (width - skipPixels > MAX_WIDTH)
+ ? MAX_WIDTH : (width - skipPixels);
- for (row = 0; row < height; row++, y++) {
- GLstencil values[MAX_WIDTH];
- GLenum destType = (sizeof(GLstencil) == sizeof(GLubyte))
- ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT;
- const GLvoid *source = _mesa_image_address(&ctx->Unpack,
- pixels, width, height, GL_COLOR_INDEX, type, 0, row, 0);
- _mesa_unpack_index_span(ctx, drawWidth, destType, values,
- type, source, &ctx->Unpack,
- ctx->_ImageTransferState);
- if (ctx->_ImageTransferState & IMAGE_SHIFT_OFFSET_BIT) {
- _mesa_shift_and_offset_stencil( ctx, drawWidth, values );
- }
- if (ctx->Pixel.MapStencilFlag) {
- _mesa_map_stencil( ctx, drawWidth, values );
- }
+ for (row = 0; row < height; row++, spanY++) {
+ GLstencil values[MAX_WIDTH];
+ GLenum destType = (sizeof(GLstencil) == sizeof(GLubyte))
+ ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT;
+ const GLvoid *source = _mesa_image_address(&ctx->Unpack, pixels,
+ width, height,
+ GL_COLOR_INDEX, type,
+ 0, row, skipPixels);
+ _mesa_unpack_index_span(ctx, spanWidth, destType, values,
+ type, source, &ctx->Unpack,
+ ctx->_ImageTransferState);
+ if (ctx->_ImageTransferState & IMAGE_SHIFT_OFFSET_BIT) {
+ _mesa_shift_and_offset_stencil(ctx, spanWidth, values);
+ }
+ if (ctx->Pixel.MapStencilFlag) {
+ _mesa_map_stencil(ctx, spanWidth, values);
+ }
- if (zoom) {
- _mesa_write_zoomed_stencil_span( ctx, (GLuint) drawWidth, x, y,
- values, desty );
- }
- else {
- _mesa_write_stencil_span( ctx, (GLuint) drawWidth, x, y, values );
+ if (zoom) {
+ _mesa_write_zoomed_stencil_span(ctx, (GLuint) spanWidth,
+ spanX, spanY, values, desty, 0);
+ }
+ else {
+ _mesa_write_stencil_span(ctx, (GLuint) spanWidth,
+ spanX, spanY, values);
+ }
}
+ skipPixels += spanWidth;
}
}
/*
- * Do a glDrawPixels of depth values.
+ * Draw depth image.
*/
static void
draw_depth_pixels( GLcontext *ctx, GLint x, GLint y,
@@ -611,10 +626,9 @@ draw_depth_pixels( GLcontext *ctx, GLint x, GLint y,
const GLboolean bias_or_scale = ctx->Pixel.DepthBias!=0.0 || ctx->Pixel.DepthScale!=1.0;
const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
const GLint desty = y;
- GLint drawWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
struct sw_span span;
- INIT_SPAN(span, GL_BITMAP, drawWidth, 0, SPAN_Z);
+ INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_Z);
if (type != GL_BYTE
&& type != GL_UNSIGNED_BYTE
@@ -634,79 +648,92 @@ draw_depth_pixels( GLcontext *ctx, GLint x, GLint y,
if (ctx->Texture._EnabledUnits)
_mesa_span_default_texcoords(ctx, &span);
- if (type==GL_UNSIGNED_SHORT && ctx->Visual.depthBits == 16
- && !bias_or_scale && !zoom && ctx->Visual.rgbMode) {
+ if (type == GL_UNSIGNED_SHORT && ctx->Visual.depthBits == 16
+ && !bias_or_scale && !zoom && ctx->Visual.rgbMode
+ && width < MAX_WIDTH) {
/* Special case: directly write 16-bit depth values */
GLint row;
span.x = x;
span.y = y;
- span.end = drawWidth;
+ span.end = width;
for (row = 0; row < height; row++, span.y++) {
const GLushort *zptr = (const GLushort *)
_mesa_image_address(&ctx->Unpack, pixels, width, height,
GL_DEPTH_COMPONENT, type, 0, row, 0);
GLint i;
- for (i = 0; i < drawWidth; i++)
+ for (i = 0; i < width; i++)
span.array->z[i] = zptr[i];
_mesa_write_rgba_span(ctx, &span);
}
}
- else if (type==GL_UNSIGNED_INT && ctx->Visual.depthBits == 32
- && !bias_or_scale && !zoom && ctx->Visual.rgbMode) {
+ else if (type == GL_UNSIGNED_INT && ctx->Visual.depthBits == 32
+ && !bias_or_scale && !zoom && ctx->Visual.rgbMode
+ && width < MAX_WIDTH) {
/* Special case: directly write 32-bit depth values */
GLint row;
span.x = x;
span.y = y;
- span.end = drawWidth;
+ span.end = width;
for (row = 0; row < height; row++, span.y++) {
const GLuint *zptr = (const GLuint *)
_mesa_image_address(&ctx->Unpack, pixels, width, height,
GL_DEPTH_COMPONENT, type, 0, row, 0);
- MEMCPY(span.array->z, zptr, drawWidth * sizeof(GLdepth));
+ MEMCPY(span.array->z, zptr, width * sizeof(GLdepth));
_mesa_write_rgba_span(ctx, &span);
}
}
else {
/* General case */
- GLint row;
- span.x = x;
- span.y = y;
- span.end = drawWidth;
- for (row = 0; row < height; row++, span.y++) {
- GLfloat fspan[MAX_WIDTH];
- const GLvoid *src = _mesa_image_address(&ctx->Unpack,
- pixels, width, height, GL_DEPTH_COMPONENT, type, 0, row, 0);
- _mesa_unpack_depth_span( ctx, drawWidth, fspan, type, src,
- &ctx->Unpack );
- /* clamp depth values to [0,1] and convert from floats to integers */
- {
- const GLfloat zs = ctx->DepthMaxF;
- GLint i;
- for (i = 0; i < drawWidth; i++) {
- span.array->z[i] = (GLdepth) (fspan[i] * zs + 0.5F);
+ GLint row, skipPixels = 0;
+
+ /* in case width > MAX_WIDTH do the copy in chunks */
+ 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);
+ for (row = 0; row < height; row++, span.y++) {
+ GLfloat floatSpan[MAX_WIDTH];
+ const GLvoid *src = _mesa_image_address(&ctx->Unpack,
+ pixels, width, height,
+ GL_DEPTH_COMPONENT, type,
+ 0, row, skipPixels);
+ _mesa_unpack_depth_span(ctx, span.end, floatSpan, type,
+ src, &ctx->Unpack);
+ /* clamp depth values to [0,1] and convert from floats to ints */
+ {
+ const GLfloat zs = ctx->DepthMaxF;
+ GLint i;
+ for (i = 0; i < span.end; i++) {
+ span.array->z[i] = (GLdepth) (floatSpan[i] * zs + 0.5F);
+ }
}
- }
- if (ctx->Visual.rgbMode) {
- if (zoom) {
- _mesa_write_zoomed_rgba_span(ctx, &span,
- (const GLchan (*)[4]) span.array->rgba, desty);
+ if (ctx->Visual.rgbMode) {
+ if (zoom) {
+ _mesa_write_zoomed_rgba_span(ctx, &span,
+ (const GLchan (*)[4]) span.array->rgba,
+ desty, skipPixels);
+ }
+ else
+ _mesa_write_rgba_span(ctx, &span);
+ }
+ else {
+ if (zoom)
+ _mesa_write_zoomed_index_span(ctx, &span, desty, 0);
+ else
+ _mesa_write_index_span(ctx, &span);
}
- else
- _mesa_write_rgba_span(ctx, &span);
- }
- else {
- if (zoom)
- _mesa_write_zoomed_index_span(ctx, &span, desty);
- else
- _mesa_write_index_span(ctx, &span);
}
+ skipPixels += span.end;
}
}
}
+
/*
- * Do glDrawPixels of RGBA pixels.
+ * Draw RGBA image.
*/
static void
draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y,
@@ -805,45 +832,46 @@ draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y,
* General solution
*/
{
- GLint row;
- if (width > MAX_WIDTH)
- width = MAX_WIDTH;
+ GLint row, skipPixels = 0;
- for (row = 0; row < height; row++, y++) {
- const GLvoid *source = _mesa_image_address(unpack,
- pixels, width, height, format, type, 0, row, 0);
+ /* if the span is wider than MAX_WIDTH we have to do it in chunks */
+ 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);
- _mesa_unpack_chan_color_span(ctx, width, GL_RGBA,
- (GLchan *) span.array->rgba,
- format, type, source, unpack,
- transferOps);
+ for (row = 0; row < height; row++, span.y++) {
+ const GLvoid *source = _mesa_image_address(unpack,
+ pixels, width, height, format, type, 0, row, skipPixels);
- if ((ctx->Pixel.MinMaxEnabled && ctx->MinMax.Sink) ||
- (ctx->Pixel.HistogramEnabled && ctx->Histogram.Sink))
- continue;
+ _mesa_unpack_chan_color_span(ctx, span.end, GL_RGBA,
+ (GLchan *) span.array->rgba,
+ format, type, source, unpack,
+ transferOps);
- if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._EnabledUnits) {
- span.end = width;
- _swrast_pixel_texture(ctx, &span);
- }
+ if ((ctx->Pixel.MinMaxEnabled && ctx->MinMax.Sink) ||
+ (ctx->Pixel.HistogramEnabled && ctx->Histogram.Sink))
+ continue;
+
+ if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._EnabledUnits) {
+ _swrast_pixel_texture(ctx, &span);
+ }
- if (quickDraw) {
- (*swrast->Driver.WriteRGBASpan)(ctx, width, x, y,
+ if (quickDraw) {
+ (*swrast->Driver.WriteRGBASpan)(ctx, span.end, span.x, span.y,
(CONST GLchan (*)[4]) span.array->rgba, NULL);
+ }
+ else if (zoom) {
+ _mesa_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4]) span.array->rgba, desty, skipPixels);
+ }
+ else {
+ _mesa_write_rgba_span(ctx, &span);
+ }
}
- else if (zoom) {
- span.x = x;
- span.y = y;
- span.end = width;
- _mesa_write_zoomed_rgba_span(ctx, &span,
- (CONST GLchan (*)[4]) span.array->rgba, desty);
- }
- else {
- span.x = x;
- span.y = y;
- span.end = width;
- _mesa_write_rgba_span(ctx, &span);
- }
+ skipPixels += span.end;
}
}
diff --git a/src/mesa/swrast/s_zoom.c b/src/mesa/swrast/s_zoom.c
index 75ea75bd08..dbf2aefd31 100644
--- a/src/mesa/swrast/s_zoom.c
+++ b/src/mesa/swrast/s_zoom.c
@@ -1,8 +1,8 @@
-/* $Id: s_zoom.c,v 1.18 2002/10/24 23:57:24 brianp Exp $ */
+/* $Id: s_zoom.c,v 1.19 2002/12/05 04:48:53 brianp Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 5.1
*
* Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
*
@@ -40,7 +40,7 @@
*/
static void
zoom_span( GLcontext *ctx, const struct sw_span *span,
- const GLvoid *src, GLint y0, GLenum format )
+ const GLvoid *src, GLint y0, GLenum format, GLint skipPixels )
{
GLint r0, r1, row;
GLint c0, c1, skipCol;
@@ -61,19 +61,15 @@ zoom_span( GLcontext *ctx, const struct sw_span *span,
INIT_SPAN(zoomed, GL_BITMAP, 0, 0, 0);
zoomed.array = &zoomed_arrays;
+ zoomed.z = span->z;
+ zoomed.zStep = span->z;
+ zoomed.fog = span->fog;
+ zoomed.fogStep = span->fogStep;
if (format == GL_RGBA || format == GL_RGB) {
- zoomed.z = span->z;
- zoomed.zStep = span->z;
- zoomed.fog = span->fog;
- zoomed.fogStep = span->fogStep;
zoomed.interpMask = span->interpMask & ~SPAN_RGBA;
zoomed.arrayMask |= SPAN_RGBA;
}
else if (format == GL_COLOR_INDEX) {
- zoomed.z = span->z;
- zoomed.zStep = span->z;
- zoomed.fog = span->fog;
- zoomed.fogStep = span->fogStep;
zoomed.interpMask = span->interpMask & ~SPAN_INDEX;
zoomed.arrayMask |= SPAN_INDEX;
}
@@ -81,8 +77,13 @@ zoom_span( GLcontext *ctx, const struct sw_span *span,
/*
* Compute which columns to draw: [c0, c1)
*/
+#if 0
c0 = (GLint) span->x;
c1 = (GLint) (span->x + span->end * ctx->Pixel.ZoomX);
+#else
+ c0 = (GLint) span->x + skipPixels * ctx->Pixel.ZoomX;
+ c1 = (GLint) (span->x + (skipPixels + span->end) * ctx->Pixel.ZoomX);
+#endif
if (c0 == c1) {
return;
}
@@ -152,8 +153,12 @@ zoom_span( GLcontext *ctx, const struct sw_span *span,
const GLfloat xscale = 1.0F / ctx->Pixel.ZoomX;
for (j = (GLint) zoomed.start; j < (GLint) zoomed.end; j++) {
i = (GLint) ((j + skipCol) * xscale);
- if (i < 0)
+ if (ctx->Pixel.ZoomX < 0.0) {
+ ASSERT(i <= 0);
i = span->end + i - 1;
+ }
+ ASSERT(i >= 0);
+ ASSERT(i < span->end);
COPY_CHAN4(zoomed.array->rgba[j], rgba[i]);
}
}
@@ -174,8 +179,12 @@ zoom_span( GLcontext *ctx, const struct sw_span *span,
const GLfloat xscale = 1.0F / ctx->Pixel.ZoomX;
for (j = (GLint) zoomed.start; j < (GLint) zoomed.end; j++) {
i = (GLint) ((j + skipCol) * xscale);
- if (i < 0)
+ if (ctx->Pixel.ZoomX < 0.0) {
+ ASSERT(i <= 0);
i = span->end + i - 1;
+ }
+ ASSERT(i >= 0);
+ ASSERT(i < span->end);
zoomed.array->rgba[j][0] = rgb[i][0];
zoomed.array->rgba[j][1] = rgb[i][1];
zoomed.array->rgba[j][2] = rgb[i][2];
@@ -196,8 +205,12 @@ zoom_span( GLcontext *ctx, const struct sw_span *span,
const GLfloat xscale = 1.0F / ctx->Pixel.ZoomX;
for (j = (GLint) zoomed.start; j < (GLint) zoomed.end; j++) {
i = (GLint) ((j + skipCol) * xscale);
- if (i < 0)
+ if (ctx->Pixel.ZoomX < 0.0) {
+ ASSERT(i <= 0);
i = span->end + i - 1;
+ }
+ ASSERT(i >= 0);
+ ASSERT(i < span->end);
zoomed.array->index[j] = indexes[i];
}
}
@@ -236,25 +249,28 @@ zoom_span( GLcontext *ctx, const struct sw_span *span,
void
_mesa_write_zoomed_rgba_span( GLcontext *ctx, const struct sw_span *span,
- CONST GLchan rgba[][4], GLint y0 )
+ CONST GLchan rgba[][4], GLint y0,
+ GLint skipPixels )
{
- zoom_span(ctx, span, (const GLvoid *) rgba, y0, GL_RGBA);
+ zoom_span(ctx, span, (const GLvoid *) rgba, y0, GL_RGBA, skipPixels);
}
void
_mesa_write_zoomed_rgb_span( GLcontext *ctx, const struct sw_span *span,
- CONST GLchan rgb[][3], GLint y0 )
+ CONST GLchan rgb[][3], GLint y0,
+ GLint skipPixels )
{
- zoom_span(ctx, span, (const GLvoid *) rgb, y0, GL_RGB);
+ zoom_span(ctx, span, (const GLvoid *) rgb, y0, GL_RGB, skipPixels);
}
void
_mesa_write_zoomed_index_span( GLcontext *ctx, const struct sw_span *span,
- GLint y0 )
+ GLint y0, GLint skipPixels )
{
- zoom_span(ctx, span, (const GLvoid *) span->array->index, y0, GL_COLOR_INDEX);
+ zoom_span(ctx, span, (const GLvoid *) span->array->index, y0,
+ GL_COLOR_INDEX, skipPixels);
}
@@ -264,7 +280,8 @@ _mesa_write_zoomed_index_span( GLcontext *ctx, const struct sw_span *span,
void
_mesa_write_zoomed_stencil_span( GLcontext *ctx,
GLuint n, GLint x, GLint y,
- const GLstencil stencil[], GLint y0 )
+ const GLstencil stencil[], GLint y0,
+ GLint skipPixels )
{
GLint m;
GLint r0, r1, row, r;
@@ -272,6 +289,8 @@ _mesa_write_zoomed_stencil_span( GLcontext *ctx,
GLstencil zstencil[MAX_WIDTH]; /* zoomed stencil values */
GLint maxwidth = MIN2( ctx->DrawBuffer->Width, MAX_WIDTH );
+ (void) skipPixels; /* XXX this shouldn't be ignored */
+
/* compute width of output row */
m = (GLint) ABSF( n * ctx->Pixel.ZoomX );
if (m==0) {
@@ -283,7 +302,7 @@ _mesa_write_zoomed_stencil_span( GLcontext *ctx,
}
/* compute which rows to draw */
- row = y-y0;
+ row = y - y0;
r0 = y0 + (GLint) (row * ctx->Pixel.ZoomY);
r1 = y0 + (GLint) ((row+1) * ctx->Pixel.ZoomY);
if (r0==r1) {
diff --git a/src/mesa/swrast/s_zoom.h b/src/mesa/swrast/s_zoom.h
index 77ddb47823..54ccf69eb8 100644
--- a/src/mesa/swrast/s_zoom.h
+++ b/src/mesa/swrast/s_zoom.h
@@ -1,8 +1,8 @@
-/* $Id: s_zoom.h,v 1.7 2002/01/31 00:27:43 brianp Exp $ */
+/* $Id: s_zoom.h,v 1.8 2002/12/05 04:48:53 brianp Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 5.1
*
* Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
*
@@ -32,18 +32,21 @@
extern void
_mesa_write_zoomed_rgba_span( GLcontext *ctx, const struct sw_span *span,
- CONST GLchan rgb[][4], GLint y0 );
+ CONST GLchan rgb[][4], GLint y0,
+ GLint skipPixels );
extern void
_mesa_write_zoomed_rgb_span( GLcontext *ctx, const struct sw_span *span,
- CONST GLchan rgb[][3], GLint y0 );
+ CONST GLchan rgb[][3], GLint y0,
+ GLint skipPixels );
extern void
_mesa_write_zoomed_index_span( GLcontext *ctx, const struct sw_span *span,
- GLint y0 );
+ GLint y0, GLint skipPixels );
extern void
_mesa_write_zoomed_stencil_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLstencil stencil[], GLint y0 );
+ const GLstencil stencil[], GLint y0,
+ GLint skipPixels );
#endif
generated by cgit v1.2.3 (git 2.51.0) at 2025-10-31 09:38:01 +0000