-/* $Id: s_copypix.c,v 1.2 2000/10/31 23:11:06 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
- *
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
- *
+ * Version: 5.1
+ *
+ * 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"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
- *
+ *
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
- *
+ *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
#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_imaging.h"
#include "s_pixeltex.h"
#include "s_span.h"
#include "s_stencil.h"
/*
- * Determine if there's overlap in an image copy
+ * Determine if there's overlap in an image copy.
+ * This test also compensates for the fact that copies are done from
+ * bottom to top and overlaps can sometimes be handled correctly
+ * without making a temporary image copy.
*/
static GLboolean
-regions_overlap(int srcx, int srcy, int dstx, int dsty, int width, int height,
- float zoomX, float zoomY)
+regions_overlap(GLint srcx, GLint srcy,
+ GLint dstx, GLint dsty,
+ GLint width, GLint height,
+ GLfloat zoomX, GLfloat zoomY)
{
- if ((srcx > dstx + (width * zoomX) + 1) || (srcx + width + 1 < dstx)) {
- return GL_FALSE;
- }
- else if ((srcy < dsty) && (srcy + height < dsty + (height * zoomY))) {
- return GL_FALSE;
- }
- else if ((srcy > dsty) && (srcy + height > dsty + (height * zoomY))) {
- return GL_FALSE;
+ if (zoomX == 1.0 && zoomY == 1.0) {
+ /* no zoom */
+ if (srcx >= dstx + width || (srcx + width <= dstx)) {
+ return GL_FALSE;
+ }
+ else if (srcy < dsty) { /* this is OK */
+ return GL_FALSE;
+ }
+ else if (srcy > dsty + height) {
+ return GL_FALSE;
+ }
+ else {
+ return GL_TRUE;
+ }
}
else {
- return GL_TRUE;
+ /* add one pixel of slop when zooming, just to be safe */
+ if ((srcx > dstx + (width * zoomX) + 1) || (srcx + width + 1 < dstx)) {
+ return GL_FALSE;
+ }
+ else if ((srcy < dsty) && (srcy + height < dsty + (height * zoomY))) {
+ return GL_FALSE;
+ }
+ else if ((srcy > dsty) && (srcy + height > dsty + (height * zoomY))) {
+ return GL_FALSE;
+ }
+ else {
+ return GL_TRUE;
+ }
}
}
copy_conv_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
GLint width, GLint height, GLint destx, GLint desty)
{
- GLdepth zspan[MAX_WIDTH];
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
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;
+ const GLuint transferOps = ctx->_ImageTransferState;
GLfloat *dest, *tmpImage, *convImage;
+ struct sw_span span;
- if (ctx->Depth.Test || ctx->Fog.Enabled) {
- /* fill in array of z values */
- GLdepth z = (GLdepth)
- (ctx->Current.RasterPos[2] * ctx->Visual.DepthMax);
- GLint i;
- for (i = 0; i < width; i++) {
- zspan[i] = z;
- }
- }
+ INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
- if (ctx->RasterMask == 0
+ if (ctx->Depth.Test)
+ _swrast_span_default_z(ctx, &span);
+ if (ctx->Fog.Enabled)
+ _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;
/* allocate space for GLfloat image */
tmpImage = (GLfloat *) MALLOC(width * height * 4 * sizeof(GLfloat));
if (!tmpImage) {
- gl_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
return;
}
convImage = (GLfloat *) MALLOC(width * height * 4 * sizeof(GLfloat));
if (!convImage) {
FREE(tmpImage);
- gl_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
return;
}
dest = tmpImage;
if (changeBuffer) {
- (*ctx->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;
- gl_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) {
- (*ctx->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 */
for (row = 0; row < height; row++) {
- GLfloat (*rgba)[4] = (GLfloat (*)[4]) tmpImage + row * width * 4;
+ 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);
+ _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) {
/* do remaining image transfer ops */
for (row = 0; row < height; row++) {
- GLfloat (*rgba)[4] = (GLfloat (*)[4]) convImage + row * width * 4;
+ GLfloat (*rgba)[4] = (GLfloat (*)[4]) (convImage + row * width * 4);
/* GL_POST_CONVOLUTION_COLOR_TABLE lookup */
if (transferOps & IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT) {
for (row = 0; row < height; row++) {
const GLfloat *src = convImage + row * width * 4;
- GLchan rgba[MAX_WIDTH][4];
GLint i, dy;
/* clamp to [0,1] and convert float back to chan */
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);
- rgba[i][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX);
- rgba[i][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX);
- rgba[i][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
- 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->Texture.ReallyEnabled && ctx->Pixel.PixelTextureEnabled) {
- GLfloat s[MAX_WIDTH], t[MAX_WIDTH], r[MAX_WIDTH], q[MAX_WIDTH];
- GLchan primary_rgba[MAX_WIDTH][4];
- GLuint unit;
- /* XXX not sure how multitexture is supposed to work here */
-
- MEMCPY(primary_rgba, rgba, 4 * width * sizeof(GLchan));
-
- for (unit = 0; unit < MAX_TEXTURE_UNITS; unit++) {
- _mesa_pixeltexgen(ctx, width, (const GLchan (*)[4]) rgba,
- s, t, r, q);
- gl_texture_pixels(ctx, unit, width, s, t, r, NULL,
- primary_rgba, rgba);
- }
+ 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) {
- (*ctx->Driver.WriteRGBASpan)( ctx, width, destx, dy,
- (const GLchan (*)[4])rgba, NULL );
+ if (quick_draw && dy >= 0 && dy < (GLint) ctx->DrawBuffer->Height) {
+ (*swrast->Driver.WriteRGBASpan)( ctx, width, destx, dy,
+ (const GLchan (*)[4])span.array->rgba, NULL );
}
else if (zoom) {
- gl_write_zoomed_rgba_span( ctx, width, destx, dy, zspan, 0,
- (const GLchan (*)[4])rgba, desty);
+ span.x = destx;
+ span.y = dy;
+ span.end = width;
+ _swrast_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4])span.array->rgba,
+ desty, 0);
}
else {
- gl_write_rgba_span( ctx, width, destx, dy, zspan, 0, rgba, GL_BITMAP );
+ span.x = destx;
+ span.y = dy;
+ span.end = width;
+ _swrast_write_rgba_span(ctx, &span);
}
}
copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
GLint width, GLint height, GLint destx, GLint desty)
{
- GLdepth zspan[MAX_WIDTH];
- GLchan rgba[MAX_WIDTH][4];
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLchan *tmpImage,*p;
GLboolean quick_draw;
- GLint sy, dy, stepy;
- GLint i, j;
+ 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;
+ const GLuint transferOps = ctx->_ImageTransferState;
+ struct sw_span span;
+
+ INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
if (ctx->Pixel.Convolution2DEnabled || ctx->Pixel.Separable2DEnabled) {
copy_conv_rgba_pixels(ctx, srcx, srcy, width, height, destx, desty);
overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
- if (ctx->Depth.Test || ctx->Fog.Enabled) {
- /* fill in array of z values */
- GLdepth z = (GLdepth) (ctx->Current.RasterPos[2] * ctx->Visual.DepthMax);
- for (i=0;i<width;i++) {
- zspan[i] = z;
- }
- }
+ if (ctx->Depth.Test)
+ _swrast_span_default_z(ctx, &span);
+ if (ctx->Fog.Enabled)
+ _swrast_span_default_fog(ctx, &span);
- if (ctx->RasterMask == 0
+ 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;
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
-
if (overlapping) {
GLint ssy = sy;
tmpImage = (GLchan *) MALLOC(width * height * sizeof(GLchan) * 4);
if (!tmpImage) {
- gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
+ _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) {
- (*ctx->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) {
- gl_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, ssy,
+ _swrast_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, ssy,
(GLchan (*)[4]) p );
- p += (width * sizeof(GLchan) * 4);
+ 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(rgba, p, width * sizeof(GLchan) * 4);
- 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) {
- (*ctx->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;
- }
- }
- gl_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, sy, rgba );
- }
-
- if (changeBuffer) {
- /* read from the draw buffer again (in case of blending) */
- (*ctx->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) {
const GLfloat scale = (1.0F / CHAN_MAXF);
- GLfloat rgbaFloat[MAX_WIDTH][4];
- GLuint k;
+ GLint k;
+ DEFMARRAY(GLfloat, rgbaFloat, MAX_WIDTH, 4); /* mac 32k limitation */
+ CHECKARRAY(rgbaFloat, return);
+
/* convert chan to float */
for (k = 0; k < width; k++) {
- rgbaFloat[k][RCOMP] = (GLfloat) rgba[k][RCOMP] * scale;
- rgbaFloat[k][GCOMP] = (GLfloat) rgba[k][GCOMP] * scale;
- rgbaFloat[k][BCOMP] = (GLfloat) rgba[k][BCOMP] * scale;
- rgbaFloat[k][ACOMP] = (GLfloat) rgba[k][ACOMP] * scale;
+ 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;
}
/* scale & bias */
if (transferOps & IMAGE_SCALE_BIAS_BIT) {
- _mesa_scale_and_bias_rgba(ctx, width, rgbaFloat);
+ _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) {
}
/* convolution */
if (transferOps & IMAGE_CONVOLUTION_BIT) {
- /* XXX to do */
+ _mesa_problem(ctx, "Convolution should not be enabled in copy_rgba_pixels()");
+ return;
+ }
+ /* 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) {
GLint g = (GLint) (rgbaFloat[k][GCOMP] * CHAN_MAXF);
GLint b = (GLint) (rgbaFloat[k][BCOMP] * CHAN_MAXF);
GLint a = (GLint) (rgbaFloat[k][ACOMP] * CHAN_MAXF);
- rgba[k][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX);
- rgba[k][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX);
- rgba[k][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
- 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->Texture.ReallyEnabled && ctx->Pixel.PixelTextureEnabled) {
- GLfloat s[MAX_WIDTH], t[MAX_WIDTH], r[MAX_WIDTH], q[MAX_WIDTH];
- GLchan primary_rgba[MAX_WIDTH][4];
- GLuint unit;
- /* XXX not sure how multitexture is supposed to work here */
-
- MEMCPY(primary_rgba, rgba, 4 * width * sizeof(GLchan));
-
- for (unit = 0; unit < MAX_TEXTURE_UNITS; unit++) {
- _mesa_pixeltexgen(ctx, width, (const GLchan (*)[4]) rgba,
- s, t, r, q);
- gl_texture_pixels(ctx, unit, width, s, t, r, NULL,
- primary_rgba, rgba);
- }
+ if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._EnabledUnits) {
+ span.end = width;
+ _swrast_pixel_texture(ctx, &span);
}
- if (quick_draw && dy >= 0 && dy < ctx->DrawBuffer->Height) {
- (*ctx->Driver.WriteRGBASpan)( ctx, width, destx, dy,
- (const GLchan (*)[4])rgba, NULL );
+ /* Write color span */
+ if (quick_draw && dy >= 0 && dy < (GLint) ctx->DrawBuffer->Height) {
+ (*swrast->Driver.WriteRGBASpan)( ctx, width, destx, dy,
+ (const GLchan (*)[4])span.array->rgba, NULL );
}
else if (zoom) {
- gl_write_zoomed_rgba_span( ctx, width, destx, dy, zspan, 0,
- (const GLchan (*)[4])rgba, desty);
+ span.x = destx;
+ span.y = dy;
+ span.end = width;
+ _swrast_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4]) span.array->rgba,
+ desty, 0);
}
else {
- gl_write_rgba_span( ctx, width, destx, dy, zspan, 0, rgba, GL_BITMAP );
+ span.x = destx;
+ span.y = dy;
+ span.end = width;
+ _swrast_write_rgba_span(ctx, &span);
}
}
- /* Restore pixel source to be the draw buffer (for blending, etc) */
- (*ctx->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 )
{
- GLdepth zspan[MAX_WIDTH];
GLuint *tmpImage,*p;
GLint sy, dy, stepy;
- GLint i, j;
+ GLint j;
GLboolean changeBuffer;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
const GLboolean shift_or_offset = ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset;
GLint overlapping;
+ struct sw_span span;
+
+ INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_INDEX);
/* Determine if copy should be bottom-to-top or top-to-bottom */
if (srcy<desty) {
overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
- if (ctx->Depth.Test || ctx->Fog.Enabled) {
- /* fill in array of z values */
- GLdepth z = (GLdepth) (ctx->Current.RasterPos[2] * ctx->Visual.DepthMax);
- for (i=0;i<width;i++) {
- zspan[i] = z;
- }
- }
+ if (ctx->Depth.Test)
+ _swrast_span_default_z(ctx, &span);
+ if (ctx->Fog.Enabled)
+ _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;
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
-
if (overlapping) {
GLint ssy = sy;
tmpImage = (GLuint *) MALLOC(width * height * sizeof(GLuint));
if (!tmpImage) {
- gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
+ _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) {
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
- }
for (j = 0; j < height; j++, ssy += stepy) {
- gl_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) {
- GLuint indexes[MAX_WIDTH];
+ /* Get color indexes */
if (overlapping) {
- MEMCPY(indexes, p, width * sizeof(GLuint));
+ MEMCPY(span.array->index, p, width * sizeof(GLuint));
p += width;
}
else {
- if (changeBuffer) {
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
- }
- gl_read_index_span( ctx, ctx->ReadBuffer, width, srcx, sy, indexes );
- }
-
- if (changeBuffer) {
- /* set read buffer back to draw buffer (in case of logicops) */
- (*ctx->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, indexes );
+ _mesa_shift_and_offset_ci( ctx, width, span.array->index );
}
if (ctx->Pixel.MapColorFlag) {
- _mesa_map_ci( ctx, width, indexes );
+ _mesa_map_ci( ctx, width, span.array->index );
}
- if (zoom) {
- gl_write_zoomed_index_span( ctx, width, destx, dy, zspan, 0, indexes, desty );
- }
- else {
- gl_write_index_span(ctx, width, destx, dy, zspan, 0, indexes, GL_BITMAP);
- }
+ /* write color indexes */
+ span.x = destx;
+ span.y = dy;
+ span.end = width;
+ if (zoom)
+ _swrast_write_zoomed_index_span(ctx, &span, desty, 0);
+ else
+ _swrast_write_index_span(ctx, &span);
}
- /* Restore pixel source to be the draw buffer (for blending, etc) */
- (*ctx->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];
- GLdepth zspan[MAX_WIDTH];
GLfloat *p, *tmpImage;
- GLuint indexes[MAX_WIDTH];
- GLchan rgba[MAX_WIDTH][4];
GLint sy, dy, stepy;
GLint i, j;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
GLint overlapping;
+ struct sw_span span;
+
+ INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_Z);
- if (!ctx->ReadBuffer->DepthBuffer || !ctx->DrawBuffer->DepthBuffer) {
- gl_error( ctx, GL_INVALID_OPERATION, "glCopyPixels" );
+ if (!ctx->Visual.depthBits) {
+ _mesa_error( ctx, GL_INVALID_OPERATION, "glCopyPixels" );
return;
}
overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
- /* setup colors or indexes */
- if (ctx->Visual.RGBAflag) {
- GLuint *rgba32 = (GLuint *) rgba;
- GLuint color = *(GLuint*)( ctx->Current.Color );
- for (i = 0; i < width; i++) {
- rgba32[i] = color;
- }
- }
- else {
- for (i = 0; i < width; i++) {
- indexes[i] = ctx->Current.Index;
- }
- }
+ _swrast_span_default_color(ctx, &span);
+ if (ctx->Fog.Enabled)
+ _swrast_span_default_fog(ctx, &span);
if (overlapping) {
GLint ssy = sy;
tmpImage = (GLfloat *) MALLOC(width * height * sizeof(GLfloat));
if (!tmpImage) {
- gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
+ _mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
return;
}
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;
- zspan[i] = (GLdepth) (CLAMP(d, 0.0F, 1.0F) * ctx->Visual.DepthMax);
+ span.array->z[i] = (GLdepth) (CLAMP(d, 0.0F, 1.0F) * ctx->DepthMax);
}
- if (ctx->Visual.RGBAflag) {
- if (zoom) {
- gl_write_zoomed_rgba_span( ctx, width, destx, dy, zspan, 0,
- (const GLchan (*)[4])rgba, desty );
- }
- else {
- gl_write_rgba_span( ctx, width, destx, dy, zspan, 0,
- rgba, GL_BITMAP);
- }
+ /* write depth values */
+ span.x = destx;
+ span.y = dy;
+ span.end = width;
+ if (ctx->Visual.rgbMode) {
+ if (zoom)
+ _swrast_write_zoomed_rgba_span( ctx, &span,
+ (const GLchan (*)[4])span.array->rgba, desty, 0 );
+ else
+ _swrast_write_rgba_span(ctx, &span);
}
else {
- if (zoom) {
- gl_write_zoomed_index_span( ctx, width, destx, dy,
- zspan, 0, indexes, desty );
- }
- else {
- gl_write_index_span( ctx, width, destx, dy,
- zspan, 0, indexes, GL_BITMAP );
- }
+ if (zoom)
+ _swrast_write_zoomed_index_span( ctx, &span, desty, 0 );
+ else
+ _swrast_write_index_span(ctx, &span);
}
}
- if (overlapping)
- FREE(tmpImage);
+ if (overlapping)
+ FREE(tmpImage);
}
-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;
const GLboolean shift_or_offset = ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset;
GLint overlapping;
- if (!ctx->DrawBuffer->Stencil || !ctx->ReadBuffer->Stencil) {
- gl_error( ctx, GL_INVALID_OPERATION, "glCopyPixels" );
+ if (!ctx->Visual.stencilBits) {
+ _mesa_error( ctx, GL_INVALID_OPERATION, "glCopyPixels" );
return;
}
GLint ssy = sy;
tmpImage = (GLstencil *) MALLOC(width * height * sizeof(GLstencil));
if (!tmpImage) {
- gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
+ _mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
return;
}
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) {
- gl_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,
GLint destx, GLint desty,
GLenum type )
{
- if (type == GL_COLOR && ctx->Visual.RGBAflag) {
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ RENDER_START(swrast,ctx);
+
+ if (swrast->NewState)
+ _swrast_validate_derived( ctx );
+
+ if (type == GL_COLOR && ctx->Visual.rgbMode) {
copy_rgba_pixels( ctx, srcx, srcy, width, height, destx, desty );
}
- else if (type == GL_COLOR && !ctx->Visual.RGBAflag) {
+ else if (type == GL_COLOR && !ctx->Visual.rgbMode) {
copy_ci_pixels( ctx, srcx, srcy, width, height, destx, desty );
}
else if (type == GL_DEPTH) {
copy_stencil_pixels( ctx, srcx, srcy, width, height, destx, desty );
}
else {
- gl_error( ctx, GL_INVALID_ENUM, "glCopyPixels" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glCopyPixels" );
}
+
+ RENDER_FINISH(swrast,ctx);
}
projects / mesa.git / blobdiff