diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/swrast/s_copypix.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/swrast/s_copypix.c | 801 |
1 files changed, 0 insertions, 801 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/swrast/s_copypix.c b/nx-X11/extras/Mesa/src/mesa/swrast/s_copypix.c deleted file mode 100644 index 05f81c690..000000000 --- a/nx-X11/extras/Mesa/src/mesa/swrast/s_copypix.c +++ /dev/null @@ -1,801 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 6.4 - * - * Copyright (C) 1999-2005 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 - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - - -#include "glheader.h" -#include "context.h" -#include "colormac.h" -#include "convolve.h" -#include "histogram.h" -#include "image.h" -#include "macros.h" -#include "imports.h" -#include "pixel.h" - -#include "s_context.h" -#include "s_depth.h" -#include "s_pixeltex.h" -#include "s_span.h" -#include "s_stencil.h" -#include "s_texture.h" -#include "s_zoom.h" - - - -/* - * 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(GLint srcx, GLint srcy, - GLint dstx, GLint dsty, - GLint width, GLint height, - GLfloat zoomX, GLfloat zoomY) -{ - 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 { - /* 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; - } - } -} - - -/** - * Convert GLfloat[n][4] colors to GLchan[n][4]. - * XXX maybe move into image.c - */ -static void -float_span_to_chan(GLuint n, CONST GLfloat in[][4], GLchan out[][4]) -{ - GLuint i; - for (i = 0; i < n; i++) { - UNCLAMPED_FLOAT_TO_CHAN(out[i][RCOMP], in[i][RCOMP]); - UNCLAMPED_FLOAT_TO_CHAN(out[i][GCOMP], in[i][GCOMP]); - UNCLAMPED_FLOAT_TO_CHAN(out[i][BCOMP], in[i][BCOMP]); - UNCLAMPED_FLOAT_TO_CHAN(out[i][ACOMP], in[i][ACOMP]); - } -} - - -/** - * Convert GLchan[n][4] colors to GLfloat[n][4]. - * XXX maybe move into image.c - */ -static void -chan_span_to_float(GLuint n, CONST GLchan in[][4], GLfloat out[][4]) -{ - GLuint i; - for (i = 0; i < n; i++) { - out[i][RCOMP] = CHAN_TO_FLOAT(in[i][RCOMP]); - out[i][GCOMP] = CHAN_TO_FLOAT(in[i][GCOMP]); - out[i][BCOMP] = CHAN_TO_FLOAT(in[i][BCOMP]); - out[i][ACOMP] = CHAN_TO_FLOAT(in[i][ACOMP]); - } -} - - - -/* - * RGBA copypixels with convolution. - */ -static void -copy_conv_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, - GLint width, GLint height, GLint destx, GLint desty) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - struct gl_renderbuffer *drawRb = NULL; - GLboolean quick_draw; - GLint row; - GLboolean changeBuffer; - 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); - - if (ctx->Depth.Test) - _swrast_span_default_z(ctx, &span); - if (swrast->_FogEnabled) - _swrast_span_default_fog(ctx, &span); - - - if (SWRAST_CONTEXT(ctx)->_RasterMask == 0 - && !zoom - && destx >= 0 - && destx + width <= (GLint) ctx->DrawBuffer->Width) { - quick_draw = GL_TRUE; - drawRb = ctx->DrawBuffer->_ColorDrawBuffers[0][0]; - } - else { - quick_draw = GL_FALSE; - } - - /* If read and draw buffer are different we must do buffer switching */ - changeBuffer = ctx->Pixel.ReadBuffer != ctx->Color.DrawBuffer[0] - || ctx->DrawBuffer != ctx->ReadBuffer; - - - /* allocate space for GLfloat image */ - tmpImage = (GLfloat *) MALLOC(width * height * 4 * sizeof(GLfloat)); - if (!tmpImage) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels"); - return; - } - convImage = (GLfloat *) MALLOC(width * height * 4 * sizeof(GLfloat)); - if (!convImage) { - FREE(tmpImage); - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels"); - return; - } - - if (changeBuffer) { - /* choose the read buffer */ - _swrast_use_read_buffer(ctx); - } - - /* read source image */ - dest = tmpImage; - for (row = 0; row < height; row++) { - GLchan rgba[MAX_WIDTH][4]; - /* Read GLchan and convert to GLfloat */ - _swrast_read_rgba_span(ctx, ctx->ReadBuffer->_ColorReadBuffer, - width, srcx, srcy + row, rgba); - chan_span_to_float(width, (CONST GLchan (*)[4]) rgba, - (GLfloat (*)[4]) dest); - dest += 4 * width; - } - - if (changeBuffer) { - /* restore default src/dst buffer */ - _swrast_use_draw_buffer(ctx); - } - - /* do the image transfer ops which preceed convolution */ - for (row = 0; row < height; row++) { - GLfloat (*rgba)[4] = (GLfloat (*)[4]) (tmpImage + row * width * 4); - _mesa_apply_rgba_transfer_ops(ctx, - transferOps & IMAGE_PRE_CONVOLUTION_BITS, - width, rgba); - } - - /* do convolution */ - if (ctx->Pixel.Convolution2DEnabled) { - _mesa_convolve_2d_image(ctx, &width, &height, tmpImage, convImage); - } - else { - ASSERT(ctx->Pixel.Separable2DEnabled); - _mesa_convolve_sep_image(ctx, &width, &height, tmpImage, convImage); - } - FREE(tmpImage); - - /* do remaining post-convolution image transfer ops */ - for (row = 0; row < height; row++) { - GLfloat (*rgba)[4] = (GLfloat (*)[4]) (convImage + row * width * 4); - _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 dy; - - /* convert floats back to chan */ - float_span_to_chan(width, (const GLfloat (*)[4]) src, span.array->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 < (GLint) ctx->DrawBuffer->Height) { - drawRb->PutRow(ctx, drawRb, width, destx, dy, span.array->rgba, NULL); - } - else if (zoom) { - 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 { - span.x = destx; - span.y = dy; - span.end = width; - _swrast_write_rgba_span(ctx, &span); - } - } - - FREE(convImage); -} - - -/* - * RGBA copypixels - */ -static void -copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, - GLint width, GLint height, GLint destx, GLint desty) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - struct gl_renderbuffer *drawRb; - GLchan *tmpImage,*p; - GLboolean quick_draw; - GLint sy, dy, stepy, j; - GLboolean changeBuffer; - const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F; - GLint overlapping; - const GLuint transferOps = ctx->_ImageTransferState; - struct sw_span span; - - if (!ctx->ReadBuffer->_ColorReadBuffer) { - /* no readbuffer - OK */ - return; - } - - 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); - return; - } - - /* Determine if copy should be done bottom-to-top or top-to-bottom */ - if (srcy < desty) { - /* top-down max-to-min */ - sy = srcy + height - 1; - dy = desty + height - 1; - stepy = -1; - } - else { - /* bottom-up min-to-max */ - sy = srcy; - dy = desty; - stepy = 1; - } - - 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) - _swrast_span_default_z(ctx, &span); - if (swrast->_FogEnabled) - _swrast_span_default_fog(ctx, &span); - - if (SWRAST_CONTEXT(ctx)->_RasterMask == 0 - && !zoom - && destx >= 0 - && destx + width <= (GLint) ctx->DrawBuffer->Width) { - quick_draw = GL_TRUE; - drawRb = ctx->DrawBuffer->_ColorDrawBuffers[0][0]; - } - else { - quick_draw = GL_FALSE; - drawRb = NULL; - } - - /* If read and draw buffer are different we must do buffer switching */ - changeBuffer = ctx->Pixel.ReadBuffer != ctx->Color.DrawBuffer[0] - || ctx->DrawBuffer != ctx->ReadBuffer; - - if (overlapping) { - GLint ssy = sy; - tmpImage = (GLchan *) MALLOC(width * height * sizeof(GLchan) * 4); - if (!tmpImage) { - _mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" ); - return; - } - /* setup source */ - if (changeBuffer) - _swrast_use_read_buffer(ctx); - /* read the source image */ - p = tmpImage; - for (j = 0; j < height; j++, ssy += stepy) { - _swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer, - 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 */ - p = NULL; - } - - for (j = 0; j < height; j++, sy += stepy, dy += stepy) { - /* Get source pixels */ - if (overlapping) { - /* get from buffered image */ - ASSERT(width < MAX_WIDTH); - MEMCPY(span.array->rgba, p, width * sizeof(GLchan) * 4); - p += width * 4; - } - else { - /* get from framebuffer */ - if (changeBuffer) - _swrast_use_read_buffer(ctx); - ASSERT(width < MAX_WIDTH); - _swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer, - width, srcx, sy, span.array->rgba ); - if (changeBuffer) - _swrast_use_draw_buffer(ctx); - } - - if (transferOps) { - DEFMARRAY(GLfloat, rgbaFloat, MAX_WIDTH, 4); /* mac 32k limitation */ - CHECKARRAY(rgbaFloat, return); - - /* convert to float, transfer, convert back to chan */ - chan_span_to_float(width, (CONST GLchan (*)[4]) span.array->rgba, - rgbaFloat); - _mesa_apply_rgba_transfer_ops(ctx, transferOps, width, rgbaFloat); - float_span_to_chan(width, (CONST GLfloat (*)[4]) rgbaFloat, - span.array->rgba); - - UNDEFARRAY(rgbaFloat); /* mac 32k limitation */ - } - - if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._EnabledUnits) { - span.end = width; - _swrast_pixel_texture(ctx, &span); - } - - /* Write color span */ - if (quick_draw && dy >= 0 && dy < (GLint) ctx->DrawBuffer->Height) { - drawRb->PutRow(ctx, drawRb, width, destx, dy, span.array->rgba, NULL); - } - else if (zoom) { - 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 { - span.x = destx; - span.y = dy; - span.end = width; - _swrast_write_rgba_span(ctx, &span); - } - } - - if (overlapping) - FREE(tmpImage); -} - - -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; - 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; - - if (!ctx->ReadBuffer->_ColorReadBuffer) { - /* no readbuffer - OK */ - return; - } - - INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_INDEX); - - /* Determine if copy should be bottom-to-top or top-to-bottom */ - if (srcy<desty) { - /* top-down max-to-min */ - sy = srcy + height - 1; - dy = desty + height - 1; - stepy = -1; - } - else { - /* bottom-up min-to-max */ - sy = srcy; - dy = desty; - stepy = 1; - } - - 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) - _swrast_span_default_z(ctx, &span); - if (swrast->_FogEnabled) - _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[0] - || ctx->DrawBuffer != ctx->ReadBuffer; - - if (overlapping) { - GLint ssy = sy; - tmpImage = (GLuint *) MALLOC(width * height * sizeof(GLuint)); - if (!tmpImage) { - _mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" ); - return; - } - /* setup source */ - if (changeBuffer) - _swrast_use_read_buffer(ctx); - /* read the image */ - p = tmpImage; - for (j = 0; j < height; j++, ssy += stepy) { - _swrast_read_index_span( ctx, ctx->ReadBuffer->_ColorReadBuffer, - 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 */ - p = NULL; - } - - for (j = 0; j < height; j++, sy += stepy, dy += stepy) { - /* Get color indexes */ - if (overlapping) { - MEMCPY(span.array->index, p, width * sizeof(GLuint)); - p += width; - } - else { - if (changeBuffer) - _swrast_use_read_buffer(ctx); - _swrast_read_index_span( ctx, ctx->ReadBuffer->_ColorReadBuffer, - 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.array->index ); - } - if (ctx->Pixel.MapColorFlag) { - _mesa_map_ci( ctx, width, span.array->index ); - } - - /* 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); - } - - 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 ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - const GLfloat depthMax = ctx->DrawBuffer->_DepthMaxF; - struct gl_renderbuffer *readRb - = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer; - GLfloat *p, *tmpImage; - 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; - - if (!readRb) { - /* no readbuffer - OK */ - return; - } - - INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_Z); - - if (!ctx->Visual.depthBits) { - _mesa_error( ctx, GL_INVALID_OPERATION, "glCopyPixels" ); - return; - } - - /* Determine if copy should be bottom-to-top or top-to-bottom */ - if (srcy<desty) { - /* top-down max-to-min */ - sy = srcy + height - 1; - dy = desty + height - 1; - stepy = -1; - } - else { - /* bottom-up min-to-max */ - sy = srcy; - dy = desty; - stepy = 1; - } - - if (ctx->DrawBuffer == ctx->ReadBuffer) { - overlapping = regions_overlap(srcx, srcy, destx, desty, width, height, - ctx->Pixel.ZoomX, ctx->Pixel.ZoomY); - } - else { - overlapping = GL_FALSE; - } - - _swrast_span_default_color(ctx, &span); - if (swrast->_FogEnabled) - _swrast_span_default_fog(ctx, &span); - - if (overlapping) { - GLint ssy = sy; - tmpImage = (GLfloat *) MALLOC(width * height * sizeof(GLfloat)); - if (!tmpImage) { - _mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" ); - return; - } - p = tmpImage; - for (j = 0; j < height; j++, ssy += stepy) { - _swrast_read_depth_span_float(ctx, readRb, width, srcx, ssy, p); - p += width; - } - p = tmpImage; - } - else { - tmpImage = NULL; /* silence compiler warning */ - p = NULL; - } - - 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 { - _swrast_read_depth_span_float(ctx, readRb, 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.array->z[i] = (GLdepth) (CLAMP(d, 0.0F, 1.0F) * depthMax); - } - - /* 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) - _swrast_write_zoomed_index_span( ctx, &span, desty, 0 ); - else - _swrast_write_index_span(ctx, &span); - } - } - - if (overlapping) - FREE(tmpImage); -} - - - -static void -copy_stencil_pixels( GLcontext *ctx, GLint srcx, GLint srcy, - GLint width, GLint height, - GLint destx, GLint desty ) -{ - struct gl_renderbuffer *rb - = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer; - GLint sy, dy, stepy; - GLint j; - GLstencil *p, *tmpImage; - 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; - - if (!ctx->Visual.stencilBits) { - _mesa_error( ctx, GL_INVALID_OPERATION, "glCopyPixels" ); - return; - } - - if (!rb) { - /* no readbuffer - OK */ - return; - } - - /* Determine if copy should be bottom-to-top or top-to-bottom */ - if (srcy < desty) { - /* top-down max-to-min */ - sy = srcy + height - 1; - dy = desty + height - 1; - stepy = -1; - } - else { - /* bottom-up min-to-max */ - sy = srcy; - dy = desty; - stepy = 1; - } - - 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; - tmpImage = (GLstencil *) MALLOC(width * height * sizeof(GLstencil)); - if (!tmpImage) { - _mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" ); - return; - } - p = tmpImage; - for (j = 0; j < height; j++, ssy += stepy) { - _swrast_read_stencil_span( ctx, rb, width, srcx, ssy, p ); - p += width; - } - p = tmpImage; - } - else { - tmpImage = NULL; /* silence compiler warning */ - p = NULL; - } - - 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 { - _swrast_read_stencil_span( ctx, rb, width, srcx, sy, stencil ); - } - - /* Apply shift, offset, look-up table */ - if (shift_or_offset) { - _mesa_shift_and_offset_stencil( ctx, width, stencil ); - } - if (ctx->Pixel.MapStencilFlag) { - _mesa_map_stencil( ctx, width, stencil ); - } - - /* Write stencil values */ - if (zoom) { - _swrast_write_zoomed_stencil_span( ctx, width, destx, dy, - stencil, desty, 0 ); - } - else { - _swrast_write_stencil_span( ctx, width, destx, dy, stencil ); - } - } - - if (overlapping) - FREE(tmpImage); -} - - - -void -_swrast_CopyPixels( GLcontext *ctx, - GLint srcx, GLint srcy, GLsizei width, GLsizei height, - GLint destx, GLint desty, - GLenum type ) -{ - 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.rgbMode) { - copy_ci_pixels( ctx, srcx, srcy, width, height, destx, desty ); - } - else if (type == GL_DEPTH) { - copy_depth_pixels( ctx, srcx, srcy, width, height, destx, desty ); - } - else if (type == GL_STENCIL) { - copy_stencil_pixels( ctx, srcx, srcy, width, height, destx, desty ); - } - else { - _mesa_error( ctx, GL_INVALID_ENUM, "glCopyPixels" ); - } - - RENDER_FINISH(swrast,ctx); -} |