-/* $Id: s_copypix.c,v 1.35 2002/04/12 15:39:59 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 "feedback.h"
+#include "histogram.h"
#include "macros.h"
-#include "mem.h"
-#include "mmath.h"
+#include "imports.h"
#include "pixel.h"
#include "s_context.h"
#include "s_depth.h"
-#include "s_histogram.h"
#include "s_pixeltex.h"
#include "s_span.h"
#include "s_stencil.h"
GLboolean quick_draw;
GLint row;
GLboolean changeBuffer;
- GLchan *saveReadAlpha;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
const GLuint transferOps = ctx->_ImageTransferState;
GLfloat *dest, *tmpImage, *convImage;
struct sw_span span;
INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
- /*span.arrayMask |= 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 (SWRAST_CONTEXT(ctx)->_RasterMask == 0
&& !zoom
&& destx >= 0
- && destx + width <= ctx->DrawBuffer->Width) {
+ && destx + width <= (GLint) ctx->DrawBuffer->Width) {
quick_draw = GL_TRUE;
}
else {
}
/* If read and draw buffer are different we must do buffer switching */
- saveReadAlpha = ctx->ReadBuffer->Alpha;
changeBuffer = ctx->Pixel.ReadBuffer != ctx->Color.DrawBuffer
|| ctx->DrawBuffer != ctx->ReadBuffer;
dest = tmpImage;
if (changeBuffer) {
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
- if (ctx->Pixel.DriverReadBuffer == GL_FRONT_LEFT)
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->FrontLeftAlpha;
- else if (ctx->Pixel.DriverReadBuffer == GL_BACK_LEFT)
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->BackLeftAlpha;
- else if (ctx->Pixel.DriverReadBuffer == GL_FRONT_RIGHT)
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->FrontRightAlpha;
- else
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->BackRightAlpha;
+ /* choose the read buffer */
+ _swrast_use_read_buffer(ctx);
}
/* read source image */
for (row = 0; row < height; row++) {
GLchan rgba[MAX_WIDTH][4];
GLint i;
- _mesa_read_rgba_span(ctx, ctx->ReadBuffer, width, srcx, srcy + row, rgba);
+ _swrast_read_rgba_span(ctx, ctx->ReadBuffer, width, srcx, srcy + row, rgba);
/* convert GLchan to GLfloat */
for (i = 0; i < width; i++) {
*dest++ = (GLfloat) rgba[i][RCOMP] * (1.0F / CHAN_MAXF);
}
}
- /* read from the draw buffer again (in case of blending) */
if (changeBuffer) {
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
- ctx->Color.DriverDrawBuffer );
- ctx->ReadBuffer->Alpha = saveReadAlpha;
+ /* restore default src/dst buffer */
+ _swrast_use_draw_buffer(ctx);
}
- /* do image transfer ops up until convolution */
+ /* do the image transfer ops which preceed convolution */
for (row = 0; row < height; row++) {
GLfloat (*rgba)[4] = (GLfloat (*)[4]) (tmpImage + row * width * 4);
-
- /* scale & bias */
- if (transferOps & IMAGE_SCALE_BIAS_BIT) {
- _mesa_scale_and_bias_rgba(ctx, width, rgba,
- ctx->Pixel.RedScale, ctx->Pixel.GreenScale,
- ctx->Pixel.BlueScale, ctx->Pixel.AlphaScale,
- ctx->Pixel.RedBias, ctx->Pixel.GreenBias,
- ctx->Pixel.BlueBias, ctx->Pixel.AlphaBias);
- }
- /* color map lookup */
- if (transferOps & IMAGE_MAP_COLOR_BIT) {
- _mesa_map_rgba(ctx, width, rgba);
- }
- /* GL_COLOR_TABLE lookup */
- if (transferOps & IMAGE_COLOR_TABLE_BIT) {
- _mesa_lookup_rgba(&ctx->ColorTable, width, rgba);
- }
+ _mesa_apply_rgba_transfer_ops(ctx,
+ transferOps & IMAGE_PRE_CONVOLUTION_BITS,
+ width, rgba);
}
/* do convolution */
}
FREE(tmpImage);
- /* do remaining image transfer ops */
+ /* do remaining post-convolution image transfer ops */
for (row = 0; row < height; row++) {
GLfloat (*rgba)[4] = (GLfloat (*)[4]) (convImage + row * width * 4);
-
- /* GL_POST_CONVOLUTION_COLOR_TABLE lookup */
- if (transferOps & IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT) {
- _mesa_lookup_rgba(&ctx->PostConvolutionColorTable, width, rgba);
- }
- /* color matrix */
- if (transferOps & IMAGE_COLOR_MATRIX_BIT) {
- _mesa_transform_rgba(ctx, width, rgba);
- }
- /* GL_POST_COLOR_MATRIX_COLOR_TABLE lookup */
- if (transferOps & IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT) {
- _mesa_lookup_rgba(&ctx->PostColorMatrixColorTable, width, rgba);
- }
- /* update histogram count */
- if (transferOps & IMAGE_HISTOGRAM_BIT) {
- _mesa_update_histogram(ctx, width, (CONST GLfloat (*)[4]) rgba);
- }
- /* update min/max */
- if (transferOps & IMAGE_MIN_MAX_BIT) {
- _mesa_update_minmax(ctx, width, (CONST GLfloat (*)[4]) rgba);
- }
+ _mesa_apply_rgba_transfer_ops(ctx,
+ transferOps & IMAGE_POST_CONVOLUTION_BITS,
+ width, rgba);
}
+ /* write the new image */
for (row = 0; row < height; row++) {
const GLfloat *src = convImage + row * width * 4;
GLint i, dy;
GLint g = (GLint) (src[i * 4 + GCOMP] * CHAN_MAXF);
GLint b = (GLint) (src[i * 4 + BCOMP] * CHAN_MAXF);
GLint a = (GLint) (src[i * 4 + ACOMP] * CHAN_MAXF);
- span.color.rgba[i][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX);
- span.color.rgba[i][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX);
- span.color.rgba[i][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
- span.color.rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
+ span.array->rgba[i][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX);
+ span.array->rgba[i][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX);
+ span.array->rgba[i][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
+ span.array->rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
}
- if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._ReallyEnabled) {
+ if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._EnabledUnits) {
span.end = width;
_swrast_pixel_texture(ctx, &span);
}
/* write row to framebuffer */
dy = desty + row;
- if (quick_draw && dy >= 0 && dy < ctx->DrawBuffer->Height) {
+ if (quick_draw && dy >= 0 && dy < (GLint) ctx->DrawBuffer->Height) {
(*swrast->Driver.WriteRGBASpan)( ctx, width, destx, dy,
- (const GLchan (*)[4])span.color.rgba, NULL );
+ (const GLchan (*)[4])span.array->rgba, NULL );
}
else if (zoom) {
span.x = destx;
span.y = dy;
span.end = width;
- _mesa_write_zoomed_rgba_span(ctx, &span,
- (CONST GLchan (*)[4])span.color.rgba,
- desty);
+ _swrast_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4])span.array->rgba,
+ desty, 0);
}
else {
span.x = destx;
span.y = dy;
span.end = width;
- _mesa_write_rgba_span(ctx, &span);
+ _swrast_write_rgba_span(ctx, &span);
}
}
GLboolean quick_draw;
GLint sy, dy, stepy, j;
GLboolean changeBuffer;
- GLchan *saveReadAlpha;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
GLint overlapping;
const GLuint transferOps = ctx->_ImageTransferState;
struct sw_span span;
INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
- /*span.arrayMask |= SPAN_RGBA;*/
if (ctx->Pixel.Convolution2DEnabled || ctx->Pixel.Separable2DEnabled) {
copy_conv_rgba_pixels(ctx, srcx, srcy, width, height, destx, desty);
stepy = 1;
}
- overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
- ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ if (ctx->DrawBuffer == ctx->ReadBuffer) {
+ overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
+ ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ }
+ else {
+ overlapping = GL_FALSE;
+ }
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 (SWRAST_CONTEXT(ctx)->_RasterMask == 0
&& !zoom
&& destx >= 0
- && destx + width <= ctx->DrawBuffer->Width) {
+ && destx + width <= (GLint) ctx->DrawBuffer->Width) {
quick_draw = GL_TRUE;
}
else {
}
/* If read and draw buffer are different we must do buffer switching */
- saveReadAlpha = ctx->ReadBuffer->Alpha;
changeBuffer = ctx->Pixel.ReadBuffer != ctx->Color.DrawBuffer
|| ctx->DrawBuffer != ctx->ReadBuffer;
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
-
if (overlapping) {
GLint ssy = sy;
tmpImage = (GLchan *) MALLOC(width * height * sizeof(GLchan) * 4);
_mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
return;
}
+ /* setup source */
+ if (changeBuffer)
+ _swrast_use_read_buffer(ctx);
+ /* read the source image */
p = tmpImage;
- if (changeBuffer) {
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
- if (ctx->Pixel.DriverReadBuffer == GL_FRONT_LEFT)
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->FrontLeftAlpha;
- else if (ctx->Pixel.DriverReadBuffer == GL_BACK_LEFT)
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->BackLeftAlpha;
- else if (ctx->Pixel.DriverReadBuffer == GL_FRONT_RIGHT)
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->FrontRightAlpha;
- else
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->BackRightAlpha;
- }
for (j = 0; j < height; j++, ssy += stepy) {
- _mesa_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, ssy,
+ _swrast_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, ssy,
(GLchan (*)[4]) p );
p += width * 4;
}
p = tmpImage;
+ /* restore dest */
+ if (changeBuffer) {
+ _swrast_use_draw_buffer(ctx);
+ changeBuffer = GL_FALSE;
+ }
}
else {
tmpImage = NULL; /* silence compiler warnings */
/* Get source pixels */
if (overlapping) {
/* get from buffered image */
- MEMCPY(span.color.rgba, p, width * sizeof(GLchan) * 4);
+ ASSERT(width < MAX_WIDTH);
+ MEMCPY(span.array->rgba, p, width * sizeof(GLchan) * 4);
p += width * 4;
}
else {
/* get from framebuffer */
- if (changeBuffer) {
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
- if (ctx->Pixel.DriverReadBuffer == GL_FRONT_LEFT) {
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->FrontLeftAlpha;
- }
- else if (ctx->Pixel.DriverReadBuffer == GL_BACK_LEFT) {
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->BackLeftAlpha;
- }
- else if (ctx->Pixel.DriverReadBuffer == GL_FRONT_RIGHT) {
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->FrontRightAlpha;
- }
- else {
- ctx->ReadBuffer->Alpha = ctx->ReadBuffer->BackRightAlpha;
- }
- }
- _mesa_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, sy, span.color.rgba );
- }
-
- if (changeBuffer) {
- /* read from the draw buffer again (in case of blending) */
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
- ctx->Color.DriverDrawBuffer );
- ctx->ReadBuffer->Alpha = saveReadAlpha;
+ if (changeBuffer)
+ _swrast_use_read_buffer(ctx);
+ ASSERT(width < MAX_WIDTH);
+ _swrast_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, sy,
+ span.array->rgba );
+ if (changeBuffer)
+ _swrast_use_draw_buffer(ctx);
}
if (transferOps) {
/* convert chan to float */
for (k = 0; k < width; k++) {
- rgbaFloat[k][RCOMP] = (GLfloat) span.color.rgba[k][RCOMP] * scale;
- rgbaFloat[k][GCOMP] = (GLfloat) span.color.rgba[k][GCOMP] * scale;
- rgbaFloat[k][BCOMP] = (GLfloat) span.color.rgba[k][BCOMP] * scale;
- rgbaFloat[k][ACOMP] = (GLfloat) span.color.rgba[k][ACOMP] * scale;
- }
- /* scale & bias */
- if (transferOps & IMAGE_SCALE_BIAS_BIT) {
- _mesa_scale_and_bias_rgba(ctx, width, rgbaFloat,
- ctx->Pixel.RedScale, ctx->Pixel.GreenScale,
- ctx->Pixel.BlueScale, ctx->Pixel.AlphaScale,
- ctx->Pixel.RedBias, ctx->Pixel.GreenBias,
- ctx->Pixel.BlueBias, ctx->Pixel.AlphaBias);
- }
- /* color map lookup */
- if (transferOps & IMAGE_MAP_COLOR_BIT) {
- _mesa_map_rgba(ctx, width, rgbaFloat);
- }
- /* GL_COLOR_TABLE lookup */
- if (transferOps & IMAGE_COLOR_TABLE_BIT) {
- _mesa_lookup_rgba(&ctx->ColorTable, width, rgbaFloat);
- }
- /* convolution */
- if (transferOps & IMAGE_CONVOLUTION_BIT) {
- abort(); /* should never get here; caught at top of function */
- }
- /* GL_POST_CONVOLUTION_RED/GREEN/BLUE/ALPHA_SCALE/BIAS */
- if (transferOps & IMAGE_POST_CONVOLUTION_SCALE_BIAS) {
- _mesa_scale_and_bias_rgba(ctx, width, rgbaFloat,
- ctx->Pixel.PostConvolutionScale[RCOMP],
- ctx->Pixel.PostConvolutionScale[GCOMP],
- ctx->Pixel.PostConvolutionScale[BCOMP],
- ctx->Pixel.PostConvolutionScale[ACOMP],
- ctx->Pixel.PostConvolutionBias[RCOMP],
- ctx->Pixel.PostConvolutionBias[GCOMP],
- ctx->Pixel.PostConvolutionBias[BCOMP],
- ctx->Pixel.PostConvolutionBias[ACOMP]);
- }
- /* GL_POST_CONVOLUTION_COLOR_TABLE lookup */
- if (transferOps & IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT) {
- _mesa_lookup_rgba(&ctx->PostConvolutionColorTable, width, rgbaFloat);
- }
- /* color matrix */
- if (transferOps & IMAGE_COLOR_MATRIX_BIT) {
- _mesa_transform_rgba(ctx, width, rgbaFloat);
- }
- /* GL_POST_COLOR_MATRIX_COLOR_TABLE lookup */
- if (transferOps & IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT) {
- _mesa_lookup_rgba(&ctx->PostColorMatrixColorTable, width, rgbaFloat);
- }
- /* update histogram count */
- if (transferOps & IMAGE_HISTOGRAM_BIT) {
- _mesa_update_histogram(ctx, width, (CONST GLfloat (*)[4]) rgbaFloat);
- }
- /* update min/max */
- if (transferOps & IMAGE_MIN_MAX_BIT) {
- _mesa_update_minmax(ctx, width, (CONST GLfloat (*)[4]) rgbaFloat);
+ rgbaFloat[k][RCOMP] = (GLfloat) span.array->rgba[k][RCOMP] * scale;
+ rgbaFloat[k][GCOMP] = (GLfloat) span.array->rgba[k][GCOMP] * scale;
+ rgbaFloat[k][BCOMP] = (GLfloat) span.array->rgba[k][BCOMP] * scale;
+ rgbaFloat[k][ACOMP] = (GLfloat) span.array->rgba[k][ACOMP] * scale;
}
+
+ _mesa_apply_rgba_transfer_ops(ctx, transferOps, width, rgbaFloat);
+
/* clamp to [0,1] and convert float back to chan */
for (k = 0; k < width; k++) {
GLint r = (GLint) (rgbaFloat[k][RCOMP] * CHAN_MAXF);
GLint g = (GLint) (rgbaFloat[k][GCOMP] * CHAN_MAXF);
GLint b = (GLint) (rgbaFloat[k][BCOMP] * CHAN_MAXF);
GLint a = (GLint) (rgbaFloat[k][ACOMP] * CHAN_MAXF);
- span.color.rgba[k][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX);
- span.color.rgba[k][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX);
- span.color.rgba[k][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
- span.color.rgba[k][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
+ span.array->rgba[k][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX);
+ span.array->rgba[k][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX);
+ span.array->rgba[k][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
+ span.array->rgba[k][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
}
UNDEFARRAY(rgbaFloat); /* mac 32k limitation */
}
- if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._ReallyEnabled) {
+ if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._EnabledUnits) {
span.end = width;
_swrast_pixel_texture(ctx, &span);
}
- if (quick_draw && dy >= 0 && dy < ctx->DrawBuffer->Height) {
+ /* Write color span */
+ if (quick_draw && dy >= 0 && dy < (GLint) ctx->DrawBuffer->Height) {
(*swrast->Driver.WriteRGBASpan)( ctx, width, destx, dy,
- (const GLchan (*)[4])span.color.rgba, NULL );
+ (const GLchan (*)[4])span.array->rgba, NULL );
}
else if (zoom) {
span.x = destx;
span.y = dy;
span.end = width;
- _mesa_write_zoomed_rgba_span(ctx, &span,
- (CONST GLchan (*)[4]) span.color.rgba,
- desty);
+ _swrast_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4]) span.array->rgba,
+ desty, 0);
}
else {
span.x = destx;
span.y = dy;
span.end = width;
- _mesa_write_rgba_span(ctx, &span);
+ _swrast_write_rgba_span(ctx, &span);
}
}
- /* Restore pixel source to be the draw buffer (for blending, etc) */
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
- ctx->Color.DriverDrawBuffer );
-
if (overlapping)
FREE(tmpImage);
}
-static void copy_ci_pixels( GLcontext *ctx,
- GLint srcx, GLint srcy, GLint width, GLint height,
- GLint destx, GLint desty )
+static void
+copy_ci_pixels( GLcontext *ctx, GLint srcx, GLint srcy,
+ GLint width, GLint height,
+ GLint destx, GLint desty )
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLuint *tmpImage,*p;
GLint sy, dy, stepy;
GLint j;
struct sw_span span;
INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_INDEX);
- /*span.arrayMask |= SPAN_INDEX;*/
/* Determine if copy should be bottom-to-top or top-to-bottom */
if (srcy<desty) {
stepy = 1;
}
- overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
- ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ if (ctx->DrawBuffer == ctx->ReadBuffer) {
+ overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
+ ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ }
+ else {
+ overlapping = GL_FALSE;
+ }
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 read and draw buffer are different we must do buffer switching */
changeBuffer = ctx->Pixel.ReadBuffer != ctx->Color.DrawBuffer
|| ctx->DrawBuffer != ctx->ReadBuffer;
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
-
if (overlapping) {
GLint ssy = sy;
tmpImage = (GLuint *) MALLOC(width * height * sizeof(GLuint));
_mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
return;
}
+ /* setup source */
+ if (changeBuffer)
+ _swrast_use_read_buffer(ctx);
+ /* read the image */
p = tmpImage;
- if (changeBuffer) {
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
- }
for (j = 0; j < height; j++, ssy += stepy) {
- _mesa_read_index_span( ctx, ctx->ReadBuffer, width, srcx, ssy, p );
+ _swrast_read_index_span( ctx, ctx->ReadBuffer, width, srcx, ssy, p );
p += width;
}
p = tmpImage;
+ /* restore to draw buffer */
+ if (changeBuffer) {
+ _swrast_use_draw_buffer(ctx);
+ changeBuffer = GL_FALSE;
+ }
}
else {
tmpImage = NULL; /* silence compiler warning */
}
for (j = 0; j < height; j++, sy += stepy, dy += stepy) {
+ /* Get color indexes */
if (overlapping) {
- MEMCPY(span.color.index, p, width * sizeof(GLuint));
+ MEMCPY(span.array->index, p, width * sizeof(GLuint));
p += width;
}
else {
- if (changeBuffer) {
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
- }
- _mesa_read_index_span( ctx, ctx->ReadBuffer, width, srcx, sy,
- span.color.index );
- }
-
- if (changeBuffer) {
- /* set read buffer back to draw buffer (in case of logicops) */
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
- ctx->Color.DriverDrawBuffer );
+ if (changeBuffer)
+ _swrast_use_read_buffer(ctx);
+ _swrast_read_index_span( ctx, ctx->ReadBuffer, width, srcx, sy,
+ span.array->index );
+ if (changeBuffer)
+ _swrast_use_draw_buffer(ctx);
}
+ /* Apply shift, offset, look-up table */
if (shift_or_offset) {
- _mesa_shift_and_offset_ci( ctx, width, span.color.index );
+ _mesa_shift_and_offset_ci( ctx, width, span.array->index );
}
if (ctx->Pixel.MapColorFlag) {
- _mesa_map_ci( ctx, width, span.color.index );
+ _mesa_map_ci( ctx, width, span.array->index );
}
+ /* write color indexes */
span.x = destx;
span.y = dy;
span.end = width;
if (zoom)
- _mesa_write_zoomed_index_span(ctx, &span, desty);
+ _swrast_write_zoomed_index_span(ctx, &span, desty, 0);
else
- _mesa_write_index_span(ctx, &span);
+ _swrast_write_index_span(ctx, &span);
}
- /* Restore pixel source to be the draw buffer (for blending, etc) */
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
- ctx->Color.DriverDrawBuffer );
-
if (overlapping)
FREE(tmpImage);
}
/*
* TODO: Optimize!!!!
*/
-static void copy_depth_pixels( GLcontext *ctx, GLint srcx, GLint srcy,
- GLint width, GLint height,
- GLint destx, GLint desty )
+static void
+copy_depth_pixels( GLcontext *ctx, GLint srcx, GLint srcy,
+ GLint width, GLint height,
+ GLint destx, GLint desty )
{
- GLfloat depth[MAX_WIDTH];
GLfloat *p, *tmpImage;
GLint sy, dy, stepy;
GLint i, j;
struct sw_span span;
INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_Z);
- /*span.arrayMask |= SPAN_Z;*/
if (!ctx->Visual.depthBits) {
_mesa_error( ctx, GL_INVALID_OPERATION, "glCopyPixels" );
stepy = 1;
}
- overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
- ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ if (ctx->DrawBuffer == ctx->ReadBuffer) {
+ overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
+ ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ }
+ else {
+ overlapping = GL_FALSE;
+ }
- _mesa_span_default_color(ctx, &span);
+ _swrast_span_default_color(ctx, &span);
if (ctx->Fog.Enabled)
- _mesa_span_default_fog(ctx, &span);
+ _swrast_span_default_fog(ctx, &span);
if (overlapping) {
GLint ssy = sy;
}
p = tmpImage;
for (j = 0; j < height; j++, ssy += stepy) {
- _mesa_read_depth_span_float(ctx, width, srcx, ssy, p);
+ _swrast_read_depth_span_float(ctx, width, srcx, ssy, p);
p += width;
}
p = tmpImage;
}
for (j = 0; j < height; j++, sy += stepy, dy += stepy) {
+ GLfloat depth[MAX_WIDTH];
+
+ /* get depth values */
if (overlapping) {
MEMCPY(depth, p, width * sizeof(GLfloat));
p += width;
}
else {
- _mesa_read_depth_span_float(ctx, width, srcx, sy, depth);
+ _swrast_read_depth_span_float(ctx, width, srcx, sy, depth);
}
+ /* apply scale and bias */
for (i = 0; i < width; i++) {
GLfloat d = depth[i] * ctx->Pixel.DepthScale + ctx->Pixel.DepthBias;
- span.zArray[i] = (GLdepth) (CLAMP(d, 0.0F, 1.0F) * ctx->DepthMax);
+ span.array->z[i] = (GLdepth) (CLAMP(d, 0.0F, 1.0F) * ctx->DepthMax);
}
+ /* write depth values */
span.x = destx;
span.y = dy;
span.end = width;
if (ctx->Visual.rgbMode) {
if (zoom)
- _mesa_write_zoomed_rgba_span( ctx, &span,
- (const GLchan (*)[4])span.color.rgba,
- desty );
+ _swrast_write_zoomed_rgba_span( ctx, &span,
+ (const GLchan (*)[4])span.array->rgba, desty, 0 );
else
- _mesa_write_rgba_span(ctx, &span);
+ _swrast_write_rgba_span(ctx, &span);
}
else {
if (zoom)
- _mesa_write_zoomed_index_span( ctx, &span, desty );
+ _swrast_write_zoomed_index_span( ctx, &span, desty, 0 );
else
- _mesa_write_index_span(ctx, &span);
+ _swrast_write_index_span(ctx, &span);
}
}
-static void copy_stencil_pixels( GLcontext *ctx, GLint srcx, GLint srcy,
- GLint width, GLint height,
- GLint destx, GLint desty )
+static void
+copy_stencil_pixels( GLcontext *ctx, GLint srcx, GLint srcy,
+ GLint width, GLint height,
+ GLint destx, GLint desty )
{
GLint sy, dy, stepy;
GLint j;
stepy = 1;
}
- overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
- ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ if (ctx->DrawBuffer == ctx->ReadBuffer) {
+ overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
+ ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ }
+ else {
+ overlapping = GL_FALSE;
+ }
if (overlapping) {
GLint ssy = sy;
}
p = tmpImage;
for (j = 0; j < height; j++, ssy += stepy) {
- _mesa_read_stencil_span( ctx, width, srcx, ssy, p );
+ _swrast_read_stencil_span( ctx, width, srcx, ssy, p );
p += width;
}
p = tmpImage;
for (j = 0; j < height; j++, sy += stepy, dy += stepy) {
GLstencil stencil[MAX_WIDTH];
+ /* Get stencil values */
if (overlapping) {
MEMCPY(stencil, p, width * sizeof(GLstencil));
p += width;
}
else {
- _mesa_read_stencil_span( ctx, width, srcx, sy, stencil );
+ _swrast_read_stencil_span( ctx, width, srcx, sy, stencil );
}
+ /* Apply shift, offset, look-up table */
if (shift_or_offset) {
_mesa_shift_and_offset_stencil( ctx, width, stencil );
}
_mesa_map_stencil( ctx, width, stencil );
}
+ /* Write stencil values */
if (zoom) {
- _mesa_write_zoomed_stencil_span( ctx, width, destx, dy, stencil, desty );
+ _swrast_write_zoomed_stencil_span( ctx, width, destx, dy,
+ stencil, desty, 0 );
}
else {
- _mesa_write_stencil_span( ctx, width, destx, dy, stencil );
+ _swrast_write_stencil_span( ctx, width, destx, dy, stencil );
}
}
-
void
_swrast_CopyPixels( GLcontext *ctx,
GLint srcx, GLint srcy, GLsizei width, GLsizei height,
projects / mesa.git / blobdiff