-/* $Id: s_copypix.c,v 1.11 2001/02/20 16:42:26 brianp Exp $ */
+/* $Id: s_copypix.c,v 1.21 2001/06/26 21:15:36 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
- *
+ *
* Copyright (C) 1999-2001 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 "s_context.h"
#include "s_depth.h"
+#include "s_fog.h"
#include "s_histogram.h"
#include "s_pixeltex.h"
#include "s_span.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 {
+ 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)
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLdepth zspan[MAX_WIDTH];
+ GLfloat fogSpan[MAX_WIDTH];
GLboolean quick_draw;
GLint row;
GLboolean changeBuffer;
if (ctx->Depth.Test || ctx->Fog.Enabled) {
/* fill in array of z values */
- GLdepth z = (GLdepth)
- (ctx->Current.RasterPos[2] * ctx->DepthMax);
+ GLdepth z = (GLdepth) (ctx->Current.RasterPos[2] * ctx->DepthMax);
+ GLfloat fog;
GLint i;
+
+ if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
+ fog = _mesa_z_to_fogfactor(ctx, ctx->Current.RasterFogCoord);
+ else
+ fog = _mesa_z_to_fogfactor(ctx, ctx->Current.RasterDistance);
+
for (i = 0; i < width; i++) {
zspan[i] = z;
+ fogSpan[i] = fog;
}
}
/* 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,
+ (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
ctx->Pixel.DriverReadBuffer );
if (ctx->Pixel.DriverReadBuffer == GL_FRONT_LEFT)
ctx->ReadBuffer->Alpha = ctx->ReadBuffer->FrontLeftAlpha;
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);
+ _mesa_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,
+ (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
ctx->Color.DriverDrawBuffer );
ctx->ReadBuffer->Alpha = saveReadAlpha;
}
dy = desty + row;
if (quick_draw && dy >= 0 && dy < ctx->DrawBuffer->Height) {
- (*ctx->Driver.WriteRGBASpan)( ctx, width, destx, dy,
+ (*swrast->Driver.WriteRGBASpan)( ctx, width, destx, dy,
(const GLchan (*)[4])rgba, NULL );
}
else if (zoom) {
- gl_write_zoomed_rgba_span( ctx, width, destx, dy, zspan, 0,
+ _mesa_write_zoomed_rgba_span( ctx, width, destx, dy, zspan, fogSpan,
(const GLchan (*)[4])rgba, desty);
}
else {
- gl_write_rgba_span( ctx, width, destx, dy, zspan, 0, rgba, GL_BITMAP );
+ _mesa_write_rgba_span( ctx, width, destx, dy, zspan, fogSpan, rgba,
+ NULL, GL_BITMAP );
}
}
copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
GLint width, GLint height, GLint destx, GLint desty)
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLdepth zspan[MAX_WIDTH];
+ GLfloat fogSpan[MAX_WIDTH];
GLchan rgba[MAX_WIDTH][4];
GLchan *tmpImage,*p;
GLboolean quick_draw;
if (ctx->Depth.Test || ctx->Fog.Enabled) {
/* fill in array of z values */
GLdepth z = (GLdepth) (ctx->Current.RasterPos[2] * ctx->DepthMax);
+ GLfloat fog;
+
+ if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
+ fog = _mesa_z_to_fogfactor(ctx, ctx->Current.RasterFogCoord);
+ else
+ fog = _mesa_z_to_fogfactor(ctx, ctx->Current.RasterDistance);
+
for (i=0;i<width;i++) {
zspan[i] = z;
+ fogSpan[i] = fog;
}
}
changeBuffer = ctx->Pixel.ReadBuffer != ctx->Color.DrawBuffer
|| ctx->DrawBuffer != ctx->ReadBuffer;
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
+ (*swrast->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;
}
p = tmpImage;
if (changeBuffer) {
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
+ (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
ctx->Pixel.DriverReadBuffer );
if (ctx->Pixel.DriverReadBuffer == GL_FRONT_LEFT)
ctx->ReadBuffer->Alpha = ctx->ReadBuffer->FrontLeftAlpha;
ctx->ReadBuffer->Alpha = ctx->ReadBuffer->BackRightAlpha;
}
for (j = 0; j < height; j++, ssy += stepy) {
- gl_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, ssy,
+ _mesa_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, ssy,
(GLchan (*)[4]) p );
p += (width * sizeof(GLchan) * 4);
}
else {
/* get from framebuffer */
if (changeBuffer) {
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
+ (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
ctx->Pixel.DriverReadBuffer );
if (ctx->Pixel.DriverReadBuffer == GL_FRONT_LEFT) {
ctx->ReadBuffer->Alpha = ctx->ReadBuffer->FrontLeftAlpha;
ctx->ReadBuffer->Alpha = ctx->ReadBuffer->BackRightAlpha;
}
}
- gl_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, sy, rgba );
+ _mesa_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,
+ (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
ctx->Color.DriverDrawBuffer );
ctx->ReadBuffer->Alpha = saveReadAlpha;
}
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;
rgba[k][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
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 */
+ GLchan primary_rgba[MAX_WIDTH][4];
+ DEFARRAY(GLfloat, s, MAX_WIDTH); /* mac 32k limitation */
+ DEFARRAY(GLfloat, t, MAX_WIDTH); /* mac 32k limitation */
+ DEFARRAY(GLfloat, r, MAX_WIDTH); /* mac 32k limitation */
+ DEFARRAY(GLfloat, q, MAX_WIDTH); /* mac 32k limitation */
+ CHECKARRAY(s, return); /* mac 32k limitation */
+ CHECKARRAY(t, return);
+ CHECKARRAY(r, return);
+ CHECKARRAY(q, return);
+ /* XXX not sure how multitexture is supposed to work here */
MEMCPY(primary_rgba, rgba, 4 * width * sizeof(GLchan));
for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
(CONST GLchan (*)[4]) primary_rgba,
rgba);
}
+
+ UNDEFARRAY(s); /* mac 32k limitation */
+ UNDEFARRAY(t);
+ UNDEFARRAY(r);
+ UNDEFARRAY(q);
}
if (quick_draw && dy >= 0 && dy < ctx->DrawBuffer->Height) {
- (*ctx->Driver.WriteRGBASpan)( ctx, width, destx, dy,
+ (*swrast->Driver.WriteRGBASpan)( ctx, width, destx, dy,
(const GLchan (*)[4])rgba, NULL );
}
else if (zoom) {
- gl_write_zoomed_rgba_span( ctx, width, destx, dy, zspan, 0,
+ _mesa_write_zoomed_rgba_span( ctx, width, destx, dy, zspan, fogSpan,
(const GLchan (*)[4])rgba, desty);
}
else {
- gl_write_rgba_span( ctx, width, destx, dy, zspan, 0, rgba, GL_BITMAP );
+ _mesa_write_rgba_span( ctx, width, destx, dy, zspan, fogSpan, rgba,
+ NULL, GL_BITMAP );
}
}
/* Restore pixel source to be the draw buffer (for blending, etc) */
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
+ (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
ctx->Color.DriverDrawBuffer );
if (overlapping)
GLint srcx, GLint srcy, GLint width, GLint height,
GLint destx, GLint desty )
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLdepth zspan[MAX_WIDTH];
+ GLfloat fogSpan[MAX_WIDTH];
GLuint *tmpImage,*p;
GLint sy, dy, stepy;
GLint i, j;
if (ctx->Depth.Test || ctx->Fog.Enabled) {
/* fill in array of z values */
GLdepth z = (GLdepth) (ctx->Current.RasterPos[2] * ctx->DepthMax);
+ GLfloat fog;
+
+ if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
+ fog = _mesa_z_to_fogfactor(ctx, ctx->Current.RasterFogCoord);
+ else
+ fog = _mesa_z_to_fogfactor(ctx, ctx->Current.RasterDistance);
+
for (i=0;i<width;i++) {
zspan[i] = z;
+ fogSpan[i] = fog;
}
}
changeBuffer = ctx->Pixel.ReadBuffer != ctx->Color.DrawBuffer
|| ctx->DrawBuffer != ctx->ReadBuffer;
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
+ (*swrast->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;
}
p = tmpImage;
if (changeBuffer) {
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
+ (*swrast->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 );
+ _mesa_read_index_span( ctx, ctx->ReadBuffer, width, srcx, ssy, p );
p += width;
}
p = tmpImage;
}
else {
if (changeBuffer) {
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
+ (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
ctx->Pixel.DriverReadBuffer );
}
- gl_read_index_span( ctx, ctx->ReadBuffer, width, srcx, sy, indexes );
+ _mesa_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,
+ (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
ctx->Color.DriverDrawBuffer );
}
}
if (zoom) {
- gl_write_zoomed_index_span( ctx, width, destx, dy, zspan, 0, indexes, desty );
+ _mesa_write_zoomed_index_span(ctx, width, destx, dy, zspan, fogSpan,
+ indexes, desty );
}
else {
- gl_write_index_span(ctx, width, destx, dy, zspan, 0, indexes, GL_BITMAP);
+ _mesa_write_index_span(ctx, width, destx, dy, zspan, fogSpan, indexes,
+ NULL, GL_BITMAP);
}
}
/* Restore pixel source to be the draw buffer (for blending, etc) */
- (*ctx->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
+ (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
ctx->Color.DriverDrawBuffer );
if (overlapping)
{
GLfloat depth[MAX_WIDTH];
GLdepth zspan[MAX_WIDTH];
+ GLfloat fogSpan[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;
+ DEFMARRAY(GLubyte, rgba, MAX_WIDTH, 4); /* mac 32k limitation */
+ CHECKARRAY(rgba, return); /* mac 32k limitation */
if (!ctx->Visual.depthBits) {
- gl_error( ctx, GL_INVALID_OPERATION, "glCopyPixels" );
+ _mesa_error( ctx, GL_INVALID_OPERATION, "glCopyPixels" );
+ UNDEFARRAY(rgba); /* mac 32k limitation */
return;
}
}
}
+ if (ctx->Fog.Enabled) {
+ GLfloat fog;
+
+ if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
+ fog = _mesa_z_to_fogfactor(ctx, ctx->Current.RasterFogCoord);
+ else
+ fog = _mesa_z_to_fogfactor(ctx, ctx->Current.RasterDistance);
+
+ for (i = 0; i < width; i++) {
+ fogSpan[i] = fog;
+ }
+ }
+
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" );
+ UNDEFARRAY(rgba); /* mac 32k limitation */
return;
}
p = tmpImage;
if (ctx->Visual.rgbMode) {
if (zoom) {
- gl_write_zoomed_rgba_span( ctx, width, destx, dy, zspan, 0,
- (const GLchan (*)[4])rgba, desty );
+ _mesa_write_zoomed_rgba_span( ctx, width, destx, dy, zspan,
+ fogSpan, (const GLchan (*)[4])rgba, desty );
}
else {
- gl_write_rgba_span( ctx, width, destx, dy, zspan, 0,
- rgba, GL_BITMAP);
+ _mesa_write_rgba_span( ctx, width, destx, dy, zspan, fogSpan,
+ rgba, NULL, GL_BITMAP);
}
}
else {
if (zoom) {
- gl_write_zoomed_index_span( ctx, width, destx, dy,
- zspan, 0, indexes, desty );
+ _mesa_write_zoomed_index_span( ctx, width, destx, dy,
+ zspan, fogSpan, indexes, desty );
}
else {
- gl_write_index_span( ctx, width, destx, dy,
- zspan, 0, indexes, GL_BITMAP );
+ _mesa_write_index_span( ctx, width, destx, dy,
+ zspan, fogSpan, indexes, NULL, GL_BITMAP );
}
}
}
- if (overlapping)
- FREE(tmpImage);
+ UNDEFARRAY(rgba); /* mac 32k limitation */
+
+ if (overlapping)
+ FREE(tmpImage);
}
GLint overlapping;
if (!ctx->Visual.stencilBits) {
- gl_error( ctx, GL_INVALID_OPERATION, "glCopyPixels" );
+ _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;
}
if (zoom) {
- gl_write_zoomed_stencil_span( ctx, width, destx, dy, stencil, desty );
+ _mesa_write_zoomed_stencil_span( ctx, width, destx, dy, stencil, desty );
}
else {
_mesa_write_stencil_span( ctx, width, destx, dy, stencil );
GLint destx, GLint desty,
GLenum type )
{
- if (SWRAST_CONTEXT(ctx)->NewState)
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ RENDER_START(swrast,ctx);
+
+ if (swrast->NewState)
_swrast_validate_derived( ctx );
if (type == GL_COLOR && ctx->Visual.rgbMode) {
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);
}
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