From 93e0ba8b80338e3526dcf686afef369e39391b45 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Thu, 5 Dec 2002 04:48:53 +0000 Subject: properly handle very wide images --- src/mesa/swrast/s_drawpix.c | 298 ++++++++++++++++++++++++-------------------- src/mesa/swrast/s_zoom.c | 63 ++++++---- src/mesa/swrast/s_zoom.h | 15 ++- 3 files changed, 213 insertions(+), 163 deletions(-) (limited to 'src/mesa/swrast') 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; irgb[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; - - 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 ); - } + /* 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++, 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; - - for (row = 0; row < height; row++, y++) { - const GLvoid *source = _mesa_image_address(unpack, - pixels, width, height, format, type, 0, row, 0); - - _mesa_unpack_chan_color_span(ctx, width, GL_RGBA, - (GLchan *) span.array->rgba, - format, type, source, unpack, - transferOps); - - if ((ctx->Pixel.MinMaxEnabled && ctx->MinMax.Sink) || - (ctx->Pixel.HistogramEnabled && ctx->Histogram.Sink)) - continue; - - if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._EnabledUnits) { - span.end = width; - _swrast_pixel_texture(ctx, &span); - } + GLint row, skipPixels = 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); + + for (row = 0; row < height; row++, span.y++) { + const GLvoid *source = _mesa_image_address(unpack, + pixels, width, height, format, type, 0, row, skipPixels); + + _mesa_unpack_chan_color_span(ctx, span.end, GL_RGBA, + (GLchan *) span.array->rgba, + format, type, source, unpack, + transferOps); + + 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 -- cgit v1.2.3