-/* $Id: s_drawpix.c,v 1.34 2002/06/15 02:38:17 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 5.1
*
- * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
#include "glheader.h"
-#include "colormac.h"
#include "context.h"
#include "convolve.h"
#include "image.h"
#include "macros.h"
-#include "mem.h"
-#include "mmath.h"
+#include "imports.h"
#include "pixel.h"
#include "s_context.h"
#include "s_pixeltex.h"
#include "s_span.h"
#include "s_stencil.h"
-#include "s_texture.h"
#include "s_zoom.h"
* GL_FALSE if image was completely clipped away (draw nothing)
*/
GLboolean
-_mesa_clip_pixelrect(const GLcontext *ctx,
+_swrast_clip_pixelrect(const GLcontext *ctx,
GLint *destX, GLint *destY,
GLsizei *width, GLsizei *height,
GLint *skipPixels, GLint *skipRows)
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
- struct sw_span *span = swrast->span;
+ struct sw_span span;
INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
}
if (ctx->Depth.Test)
- _mesa_span_default_z(ctx, span);
+ _swrast_span_default_z(ctx, &span);
if (ctx->Fog.Enabled)
- _mesa_span_default_fog(ctx, span);
+ _swrast_span_default_fog(ctx, &span);
+ if (ctx->Texture._EnabledCoordUnits)
+ _swrast_span_default_texcoords(ctx, &span);
if ((SWRAST_CONTEXT(ctx)->_RasterMask & ~CLIP_BIT) == 0
- && ctx->Texture._ReallyEnabled == 0
+ && ctx->Texture._EnabledCoordUnits == 0
&& unpack->Alignment == 1
&& !unpack->SwapBytes
&& !unpack->LsbFirst) {
GLint skipPixels = unpack->SkipPixels;
GLint skipRows = unpack->SkipRows;
GLint rowLength;
- GLdepth zSpan[MAX_WIDTH]; /* only used when zooming */
GLint zoomY0 = 0;
if (unpack->RowLength > 0)
rowLength = width;
/* If we're not using pixel zoom then do all clipping calculations
- * now. Otherwise, we'll let the _mesa_write_zoomed_*_span() functions
+ * now. Otherwise, we'll let the _swrast_write_zoomed_*_span() functions
* handle the clipping.
*/
if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
return GL_TRUE;
}
else {
- /* 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);
- for (i=0; i<drawWidth; i++)
- zSpan[i] = z;
+ if (drawWidth > MAX_WIDTH)
+ return GL_FALSE; /* fall back to general case path */
/* save Y value of first row */
zoomY0 = IROUND(ctx->Current.RasterPos[1]);
/* with zooming */
GLint row;
for (row=0; row<drawHeight; row++) {
- span->x = destX;
- span->y = destY;
- span->end = drawWidth;
- _mesa_write_zoomed_rgba_span(ctx, span,
- (CONST GLchan (*)[4]) src, zoomY0);
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _swrast_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4]) src, zoomY0, 0);
src += rowLength * 4;
destY++;
}
/* with zooming */
GLint row;
for (row=0; row<drawHeight; row++) {
- span->x = destX;
- span->y = destY;
- span->end = drawWidth;
- _mesa_write_zoomed_rgb_span(ctx, span,
- (CONST GLchan (*)[3]) src, zoomY0);
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _swrast_write_zoomed_rgb_span(ctx, &span,
+ (CONST GLchan (*)[3]) src, zoomY0, 0);
src += rowLength * 3;
destY++;
}
for (row=0; row<drawHeight; row++) {
GLint i;
for (i=0;i<drawWidth;i++) {
- span->color.rgb[i][0] = src[i];
- span->color.rgb[i][1] = src[i];
- span->color.rgb[i][2] = src[i];
+ span.array->rgb[i][0] = src[i];
+ span.array->rgb[i][1] = src[i];
+ span.array->rgb[i][2] = src[i];
}
(*swrast->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[3]) span->color.rgb, NULL);
+ (CONST GLchan (*)[3]) span.array->rgb, NULL);
src += rowLength;
destY++;
}
for (row=0; row<drawHeight; row++) {
GLint i;
for (i=0;i<drawWidth;i++) {
- span->color.rgb[i][0] = src[i];
- span->color.rgb[i][1] = src[i];
- span->color.rgb[i][2] = src[i];
+ span.array->rgb[i][0] = src[i];
+ span.array->rgb[i][1] = src[i];
+ span.array->rgb[i][2] = src[i];
}
destY--;
(*swrast->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[3]) span->color.rgb, NULL);
+ (CONST GLchan (*)[3]) span.array->rgb, NULL);
src += rowLength;
}
}
for (row=0; row<drawHeight; row++) {
GLint i;
for (i=0;i<drawWidth;i++) {
- span->color.rgb[i][0] = src[i];
- span->color.rgb[i][1] = src[i];
- span->color.rgb[i][2] = src[i];
+ span.array->rgb[i][0] = src[i];
+ span.array->rgb[i][1] = src[i];
+ span.array->rgb[i][2] = src[i];
}
- span->x = destX;
- span->y = destY;
- span->end = drawWidth;
- _mesa_write_zoomed_rgb_span(ctx, span,
- (CONST GLchan (*)[3]) span->color.rgb, zoomY0);
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _swrast_write_zoomed_rgb_span(ctx, &span,
+ (CONST GLchan (*)[3]) span.array->rgb, zoomY0, 0);
src += rowLength;
destY++;
}
GLint i;
GLchan *ptr = src;
for (i=0;i<drawWidth;i++) {
- span->color.rgba[i][0] = *ptr;
- span->color.rgba[i][1] = *ptr;
- span->color.rgba[i][2] = *ptr++;
- span->color.rgba[i][3] = *ptr++;
+ span.array->rgba[i][0] = *ptr;
+ span.array->rgba[i][1] = *ptr;
+ span.array->rgba[i][2] = *ptr++;
+ span.array->rgba[i][3] = *ptr++;
}
(*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) span->color.rgba, NULL);
+ (CONST GLchan (*)[4]) span.array->rgba, NULL);
src += rowLength*2;
destY++;
}
GLint i;
GLchan *ptr = src;
for (i=0;i<drawWidth;i++) {
- span->color.rgba[i][0] = *ptr;
- span->color.rgba[i][1] = *ptr;
- span->color.rgba[i][2] = *ptr++;
- span->color.rgba[i][3] = *ptr++;
+ span.array->rgba[i][0] = *ptr;
+ span.array->rgba[i][1] = *ptr;
+ span.array->rgba[i][2] = *ptr++;
+ span.array->rgba[i][3] = *ptr++;
}
destY--;
(*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) span->color.rgba, NULL);
+ (CONST GLchan (*)[4]) span.array->rgba, NULL);
src += rowLength*2;
}
}
GLchan *ptr = src;
GLint i;
for (i=0;i<drawWidth;i++) {
- span->color.rgba[i][0] = *ptr;
- span->color.rgba[i][1] = *ptr;
- span->color.rgba[i][2] = *ptr++;
- span->color.rgba[i][3] = *ptr++;
+ span.array->rgba[i][0] = *ptr;
+ span.array->rgba[i][1] = *ptr;
+ span.array->rgba[i][2] = *ptr++;
+ span.array->rgba[i][3] = *ptr++;
}
- span->x = destX;
- span->y = destY;
- span->end = drawWidth;
- _mesa_write_zoomed_rgba_span(ctx, span,
- (CONST GLchan (*)[4]) span->color.rgba, zoomY0);
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _swrast_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4]) span.array->rgba, zoomY0, 0);
src += rowLength*2;
destY++;
}
GLint row;
for (row=0; row<drawHeight; row++) {
ASSERT(drawWidth < MAX_WIDTH);
- _mesa_map_ci8_to_rgba(ctx, drawWidth, src, span->color.rgba);
+ _mesa_map_ci8_to_rgba(ctx, drawWidth, src, span.array->rgba);
(*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (const GLchan (*)[4]) span->color.rgba, NULL);
+ (const GLchan (*)[4]) span.array->rgba, NULL);
src += rowLength;
destY++;
}
GLint row;
for (row=0; row<drawHeight; row++) {
ASSERT(drawWidth < MAX_WIDTH);
- _mesa_map_ci8_to_rgba(ctx, drawWidth, src, span->color.rgba);
+ _mesa_map_ci8_to_rgba(ctx, drawWidth, src, span.array->rgba);
destY--;
(*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) span->color.rgba, NULL);
+ (CONST GLchan (*)[4]) span.array->rgba, NULL);
src += rowLength;
}
return GL_TRUE;
GLint row;
for (row=0; row<drawHeight; row++) {
ASSERT(drawWidth < MAX_WIDTH);
- _mesa_map_ci8_to_rgba(ctx, drawWidth, src, span->color.rgba);
- span->x = destX;
- span->y = destY;
- span->end = drawWidth;
- _mesa_write_zoomed_rgba_span(ctx, span,
- (CONST GLchan (*)[4]) span->color.rgba, zoomY0);
+ _mesa_map_ci8_to_rgba(ctx, drawWidth, src, span.array->rgba);
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _swrast_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4]) span.array->rgba, zoomY0, 0);
src += rowLength;
destY++;
}
/*
- * Do glDrawPixels of index pixels.
+ * Draw color index image.
*/
static void
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;
- struct sw_span *span = SWRAST_CONTEXT(ctx)->span;
+ 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);
+ _swrast_span_default_z(ctx, &span);
if (ctx->Fog.Enabled)
- _mesa_span_default_fog(ctx, span);
+ _swrast_span_default_fog(ctx, &span);
/*
* 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->color.index,
- type, source, &ctx->Unpack,
- ctx->_ImageTransferState);
- span->x = x;
- span->y = y;
- span->end = drawWidth;
- if (zoom)
- _mesa_write_zoomed_index_span(ctx, span, desty);
- else
- _mesa_write_index_span(ctx, span);
+ skipPixels = 0;
+ while (skipPixels < 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,
+ 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);
+
+ /* These may get changed during writing/clipping */
+ span.x = spanX;
+ span.y = spanY;
+ span.end = spanEnd;
+
+ if (zoom)
+ _swrast_write_zoomed_index_span(ctx, &span, y, skipPixels);
+ else
+ _swrast_write_index_span(ctx, &span);
+ }
+ skipPixels += spanEnd;
}
}
/*
- * 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,
{
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 &&
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) {
+ const GLint spanX = x;
+ GLint spanY = y;
+ const 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) {
+ _swrast_write_zoomed_stencil_span(ctx, (GLuint) spanWidth,
+ spanX, spanY, values, desty, 0);
+ }
+ else {
+ _swrast_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,
GLenum type, const GLvoid *pixels )
{
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 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 = SWRAST_CONTEXT(ctx)->span;
+ 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
return;
}
- _mesa_span_default_color(ctx, span);
+ _swrast_span_default_color(ctx, &span);
if (ctx->Fog.Enabled)
- _mesa_span_default_fog(ctx, span);
- if (ctx->Texture._ReallyEnabled)
- _mesa_span_default_texcoords(ctx, span);
+ _swrast_span_default_fog(ctx, &span);
+ if (ctx->Texture._EnabledCoordUnits)
+ _swrast_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;
- for (row = 0; row < height; row++, span->y++) {
+ span.x = x;
+ span.y = y;
+ 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++)
- span->zArray[i] = zptr[i];
- _mesa_write_rgba_span(ctx, span);
+ for (i = 0; i < width; i++)
+ span.array->z[i] = zptr[i];
+ _swrast_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;
- for (row = 0; row < height; row++, span->y++) {
+ span.x = x;
+ span.y = y;
+ 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->zArray, zptr, drawWidth * sizeof(GLdepth));
- _mesa_write_rgba_span(ctx, span);
+ MEMCPY(span.array->z, zptr, width * sizeof(GLdepth));
+ _swrast_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->zArray[i] = (GLdepth) (fspan[i] * zs + 0.5F);
+ GLint row, skipPixels = 0;
+
+ /* in case width > MAX_WIDTH do the copy in chunks */
+ while (skipPixels < width) {
+ const GLint spanX = x + (zoom ? 0 : skipPixels);
+ GLint spanY = y;
+ const GLint spanEnd = (width - skipPixels > MAX_WIDTH)
+ ? MAX_WIDTH : (width - skipPixels);
+ ASSERT(span.end <= MAX_WIDTH);
+ for (row = 0; row < height; row++, spanY++) {
+ GLfloat floatSpan[MAX_WIDTH];
+ const GLvoid *src = _mesa_image_address(&ctx->Unpack,
+ pixels, width, height,
+ GL_DEPTH_COMPONENT, type,
+ 0, row, skipPixels);
+
+ /* Set these for each row since the _swrast_write_* function may
+ * change them while clipping.
+ */
+ span.x = spanX;
+ span.y = spanY;
+ span.end = spanEnd;
+
+ _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;
+ GLuint i;
+ for (i = 0; i < span.end; i++) {
+ span.array->z[i] = (GLdepth) (floatSpan[i] * zs + 0.5F);
+ }
+ }
+ if (zoom) {
+ _swrast_write_zoomed_depth_span(ctx, &span, desty, skipPixels);
+ }
+ else if (ctx->Visual.rgbMode) {
+ _swrast_write_rgba_span(ctx, &span);
+ }
+ else {
+ _swrast_write_index_span(ctx, &span);
}
}
- if (ctx->Visual.rgbMode) {
- if (zoom)
- _mesa_write_zoomed_rgba_span(ctx, span,
- (const GLchan (*)[4]) span->color.rgba, desty);
- 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 += spanEnd;
}
}
}
+
/*
- * Do glDrawPixels of RGBA pixels.
+ * Draw RGBA image.
*/
static void
draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y,
GLboolean quickDraw;
GLfloat *convImage = NULL;
GLuint transferOps = ctx->_ImageTransferState;
- struct sw_span *span = swrast->span;
+ struct sw_span span;
INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
return;
if (ctx->Depth.Test)
- _mesa_span_default_z(ctx, span);
+ _swrast_span_default_z(ctx, &span);
if (ctx->Fog.Enabled)
- _mesa_span_default_fog(ctx, span);
- if (ctx->Texture._ReallyEnabled)
- _mesa_span_default_texcoords(ctx, span);
+ _swrast_span_default_fog(ctx, &span);
+ if (ctx->Texture._EnabledCoordUnits)
+ _swrast_span_default_texcoords(ctx, &span);
if (SWRAST_CONTEXT(ctx)->_RasterMask == 0 && !zoom && x >= 0 && y >= 0
&& x + width <= (GLint) ctx->DrawBuffer->Width
* 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->color.rgba,
- format, type, source, unpack,
- transferOps);
-
- if ((ctx->Pixel.MinMaxEnabled && ctx->MinMax.Sink) ||
- (ctx->Pixel.HistogramEnabled && ctx->Histogram.Sink))
- continue;
+ 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 */
+ while (skipPixels < width) {
+ const GLint spanX = x + (zoom ? 0 : skipPixels);
+ GLint spanY = y;
+ const GLint spanEnd = (width - skipPixels > MAX_WIDTH)
+ ? MAX_WIDTH : (width - skipPixels);
+ ASSERT(span.end <= MAX_WIDTH);
+
+ for (row = 0; row < height; row++, spanY++) {
+ const GLvoid *source = _mesa_image_address(unpack,
+ pixels, width, height, format, type, 0, row, skipPixels);
+
+ /* Set these for each row since the _swrast_write_* function may
+ * change them while clipping.
+ */
+ 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,
+ 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 (ctx->Pixel.PixelTextureEnabled && ctx->Texture._ReallyEnabled) {
- span->end = width;
- _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);
+ }
+ else if (zoom) {
+ _swrast_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4]) span.array->rgba, desty, skipPixels);
+ }
+ else {
+ _swrast_write_rgba_span(ctx, &span);
+ }
}
- if (quickDraw) {
- (*swrast->Driver.WriteRGBASpan)(ctx, width, x, y,
- (CONST GLchan (*)[4]) span->color.rgba, NULL);
- }
- else if (zoom) {
- span->x = x;
- span->y = y;
- span->end = width;
- _mesa_write_zoomed_rgba_span(ctx, span,
- (CONST GLchan (*)[4]) span->color.rgba, desty);
- }
- else {
- span->x = x;
- span->y = y;
- span->end = width;
- _mesa_write_rgba_span(ctx, span);
- }
+ skipPixels += spanEnd;
}
}
projects / mesa.git / blobdiff