diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/swrast/s_drawpix.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/swrast/s_drawpix.c | 1007 |
1 files changed, 0 insertions, 1007 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/swrast/s_drawpix.c b/nx-X11/extras/Mesa/src/mesa/swrast/s_drawpix.c deleted file mode 100644 index b6aa77757..000000000 --- a/nx-X11/extras/Mesa/src/mesa/swrast/s_drawpix.c +++ /dev/null @@ -1,1007 +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 "bufferobj.h" -#include "context.h" -#include "convolve.h" -#include "image.h" -#include "macros.h" -#include "imports.h" -#include "pixel.h" - -#include "s_context.h" -#include "s_drawpix.h" -#include "s_pixeltex.h" -#include "s_span.h" -#include "s_stencil.h" -#include "s_zoom.h" - - -/* - * Try to do a fast and simple RGB(a) glDrawPixels. - * Return: GL_TRUE if success, GL_FALSE if slow path must be used instead - */ -static GLboolean -fast_draw_pixels(GLcontext *ctx, GLint x, GLint y, - GLsizei width, GLsizei height, - GLenum format, GLenum type, - const struct gl_pixelstore_attrib *unpack, - const GLvoid *pixels) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0][0]; - struct sw_span span; - - INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA); - - if (!ctx->Current.RasterPosValid) { - return GL_TRUE; /* no-op */ - } - - if (swrast->_RasterMask & MULTI_DRAW_BIT) - return GL_FALSE; - - if (ctx->Depth.Test) - _swrast_span_default_z(ctx, &span); - if (swrast->_FogEnabled) - _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._EnabledCoordUnits == 0 - && unpack->Alignment == 1 - && !unpack->SwapBytes - && !unpack->LsbFirst) { - - GLint destX = x; - GLint destY = y; - GLint drawWidth = width; /* actual width drawn */ - GLint drawHeight = height; /* actual height drawn */ - GLint skipPixels = unpack->SkipPixels; - GLint skipRows = unpack->SkipRows; - GLint rowLength; - GLint zoomY0 = 0; - - if (unpack->RowLength > 0) - rowLength = unpack->RowLength; - else - rowLength = width; - - /* If we're not using pixel zoom then do all clipping calculations - * 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) { - /* horizontal clipping */ - if (destX < ctx->DrawBuffer->_Xmin) { - skipPixels += (ctx->DrawBuffer->_Xmin - destX); - drawWidth -= (ctx->DrawBuffer->_Xmin - destX); - destX = ctx->DrawBuffer->_Xmin; - } - if (destX + drawWidth > ctx->DrawBuffer->_Xmax) - drawWidth -= (destX + drawWidth - ctx->DrawBuffer->_Xmax); - if (drawWidth <= 0) - return GL_TRUE; - - /* vertical clipping */ - if (destY < ctx->DrawBuffer->_Ymin) { - skipRows += (ctx->DrawBuffer->_Ymin - destY); - drawHeight -= (ctx->DrawBuffer->_Ymin - destY); - destY = ctx->DrawBuffer->_Ymin; - } - if (destY + drawHeight > ctx->DrawBuffer->_Ymax) - drawHeight -= (destY + drawHeight - ctx->DrawBuffer->_Ymax); - if (drawHeight <= 0) - return GL_TRUE; - } - else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) { - /* upside-down image */ - /* horizontal clipping */ - if (destX < ctx->DrawBuffer->_Xmin) { - skipPixels += (ctx->DrawBuffer->_Xmin - destX); - drawWidth -= (ctx->DrawBuffer->_Xmin - destX); - destX = ctx->DrawBuffer->_Xmin; - } - if (destX + drawWidth > ctx->DrawBuffer->_Xmax) - drawWidth -= (destX + drawWidth - ctx->DrawBuffer->_Xmax); - if (drawWidth <= 0) - return GL_TRUE; - - /* vertical clipping */ - if (destY > ctx->DrawBuffer->_Ymax) { - skipRows += (destY - ctx->DrawBuffer->_Ymax); - drawHeight -= (destY - ctx->DrawBuffer->_Ymax); - destY = ctx->DrawBuffer->_Ymax; - } - if (destY - drawHeight < ctx->DrawBuffer->_Ymin) - drawHeight -= (ctx->DrawBuffer->_Ymin - (destY - drawHeight)); - if (drawHeight <= 0) - return GL_TRUE; - } - else { - 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]); - } - - - /* - * Ready to draw! - * The window region at (destX, destY) of size (drawWidth, drawHeight) - * will be written to. - * We'll take pixel data from buffer pointed to by "pixels" but we'll - * skip "skipRows" rows and skip "skipPixels" pixels/row. - */ - - if (format == GL_RGBA && type == CHAN_TYPE - && ctx->_ImageTransferState==0) { - if (ctx->Visual.rgbMode) { - GLchan *src = (GLchan *) pixels - + (skipRows * rowLength + skipPixels) * 4; - if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) { - /* no zooming */ - GLint row; - for (row=0; row<drawHeight; row++) { - rb->PutRow(ctx, rb, drawWidth, destX, destY, src, NULL); - src += rowLength * 4; - destY++; - } - } - else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) { - /* upside-down */ - GLint row; - for (row=0; row<drawHeight; row++) { - destY--; - rb->PutRow(ctx, rb, drawWidth, destX, destY, src, NULL); - src += rowLength * 4; - } - } - else { - /* with zooming */ - GLint row; - for (row=0; row<drawHeight; row++) { - 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++; - } - } - } - return GL_TRUE; - } - else if (format == GL_RGB && type == CHAN_TYPE - && ctx->_ImageTransferState == 0) { - if (ctx->Visual.rgbMode) { - GLchan *src = (GLchan *) pixels - + (skipRows * rowLength + skipPixels) * 3; - if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) { - GLint row; - for (row=0; row<drawHeight; row++) { - rb->PutRowRGB(ctx, rb, drawWidth, destX, destY, src, NULL); - src += rowLength * 3; - destY++; - } - } - else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) { - /* upside-down */ - GLint row; - for (row=0; row<drawHeight; row++) { - destY--; - rb->PutRowRGB(ctx, rb, drawWidth, destX, destY, src, NULL); - src += rowLength * 3; - } - } - else { - /* with zooming */ - GLint row; - for (row=0; row<drawHeight; row++) { - 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++; - } - } - } - return GL_TRUE; - } - else if (format == GL_LUMINANCE && type == CHAN_TYPE - && ctx->_ImageTransferState==0) { - if (ctx->Visual.rgbMode) { - GLchan *src = (GLchan *) pixels - + (skipRows * rowLength + skipPixels); - if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) { - /* no zooming */ - GLint row; - ASSERT(drawWidth <= MAX_WIDTH); - for (row=0; row<drawHeight; row++) { - GLint i; - for (i=0;i<drawWidth;i++) { - span.array->rgb[i][0] = src[i]; - span.array->rgb[i][1] = src[i]; - span.array->rgb[i][2] = src[i]; - } - rb->PutRowRGB(ctx, rb, drawWidth, destX, destY, - span.array->rgb, NULL); - src += rowLength; - destY++; - } - } - else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) { - /* upside-down */ - GLint row; - ASSERT(drawWidth <= MAX_WIDTH); - for (row=0; row<drawHeight; row++) { - GLint i; - for (i=0;i<drawWidth;i++) { - span.array->rgb[i][0] = src[i]; - span.array->rgb[i][1] = src[i]; - span.array->rgb[i][2] = src[i]; - } - destY--; - rb->PutRow(ctx, rb, drawWidth, destX, destY, - span.array->rgb, NULL); - src += rowLength; - } - } - else { - /* with zooming */ - GLint row; - ASSERT(drawWidth <= MAX_WIDTH); - for (row=0; row<drawHeight; row++) { - GLint i; - for (i=0;i<drawWidth;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; - _swrast_write_zoomed_rgb_span(ctx, &span, - (CONST GLchan (*)[3]) span.array->rgb, zoomY0, 0); - src += rowLength; - destY++; - } - } - } - return GL_TRUE; - } - else if (format == GL_LUMINANCE_ALPHA && type == CHAN_TYPE - && ctx->_ImageTransferState == 0) { - if (ctx->Visual.rgbMode) { - GLchan *src = (GLchan *) pixels - + (skipRows * rowLength + skipPixels)*2; - if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) { - /* no zooming */ - GLint row; - ASSERT(drawWidth <= MAX_WIDTH); - for (row=0; row<drawHeight; row++) { - GLint i; - GLchan *ptr = src; - for (i=0;i<drawWidth;i++) { - span.array->rgba[i][0] = *ptr; - span.array->rgba[i][1] = *ptr; - span.array->rgba[i][2] = *ptr++; - span.array->rgba[i][3] = *ptr++; - } - rb->PutRow(ctx, rb, drawWidth, destX, destY, - span.array->rgba, NULL); - src += rowLength*2; - destY++; - } - } - else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) { - /* upside-down */ - GLint row; - ASSERT(drawWidth <= MAX_WIDTH); - for (row=0; row<drawHeight; row++) { - GLint i; - GLchan *ptr = src; - for (i=0;i<drawWidth;i++) { - 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--; - rb->PutRow(ctx, rb, drawWidth, destX, destY, - span.array->rgba, NULL); - src += rowLength*2; - } - } - else { - /* with zooming */ - GLint row; - ASSERT(drawWidth <= MAX_WIDTH); - for (row=0; row<drawHeight; row++) { - GLchan *ptr = src; - GLint i; - for (i=0;i<drawWidth;i++) { - 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; - _swrast_write_zoomed_rgba_span(ctx, &span, - (CONST GLchan (*)[4]) span.array->rgba, zoomY0, 0); - src += rowLength*2; - destY++; - } - } - } - return GL_TRUE; - } - else if (format==GL_COLOR_INDEX && type==GL_UNSIGNED_BYTE) { - GLubyte *src = (GLubyte *) pixels + skipRows * rowLength + skipPixels; - if (ctx->Visual.rgbMode) { - /* convert CI data to RGBA */ - if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) { - /* no zooming */ - GLint row; - for (row=0; row<drawHeight; row++) { - ASSERT(drawWidth <= MAX_WIDTH); - _mesa_map_ci8_to_rgba(ctx, drawWidth, src, span.array->rgba); - rb->PutRow(ctx, rb, drawWidth, destX, destY, - span.array->rgba, NULL); - src += rowLength; - destY++; - } - return GL_TRUE; - } - else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) { - /* upside-down */ - GLint row; - for (row=0; row<drawHeight; row++) { - ASSERT(drawWidth <= MAX_WIDTH); - _mesa_map_ci8_to_rgba(ctx, drawWidth, src, span.array->rgba); - destY--; - rb->PutRow(ctx, rb, drawWidth, destX, destY, - span.array->rgba, NULL); - src += rowLength; - } - return GL_TRUE; - } - else { - /* with zooming */ - GLint row; - for (row=0; row<drawHeight; row++) { - ASSERT(drawWidth <= MAX_WIDTH); - _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++; - } - return GL_TRUE; - } - } - else if (ctx->_ImageTransferState==0) { - /* write CI data to CI frame buffer */ - GLint row; - if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) { - /* no zooming */ - for (row=0; row<drawHeight; row++) { - GLuint index32[MAX_WIDTH]; - GLint col; - for (col = 0; col < drawWidth; col++) - index32[col] = src[col]; - rb->PutRow(ctx, rb, drawWidth, destX, destY, index32, NULL); - src += rowLength; - destY++; - } - return GL_TRUE; - } - else { - /* with zooming */ - return GL_FALSE; - } - } - } - else { - /* can't handle this pixel format and/or data type here */ - return GL_FALSE; - } - } - - /* can't do a simple draw, have to use slow path */ - return GL_FALSE; -} - - - -/* - * Draw color index image. - */ -static void -draw_index_pixels( GLcontext *ctx, GLint x, GLint y, - GLsizei width, GLsizei height, - GLenum type, - const struct gl_pixelstore_attrib *unpack, - const GLvoid *pixels ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0; - GLint row, skipPixels; - struct sw_span span; - - INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_INDEX); - - if (ctx->Depth.Test) - _swrast_span_default_z(ctx, &span); - if (swrast->_FogEnabled) - _swrast_span_default_fog(ctx, &span); - - /* - * General solution - */ - 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++, spanY++) { - const GLvoid *source = _mesa_image_address2d(unpack, pixels, - width, height, - GL_COLOR_INDEX, type, - row, skipPixels); - _mesa_unpack_index_span(ctx, spanEnd, GL_UNSIGNED_INT, - span.array->index, type, source, 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; - } -} - - - -/* - * Draw stencil image. - */ -static void -draw_stencil_pixels( GLcontext *ctx, GLint x, GLint y, - GLsizei width, GLsizei height, - GLenum type, - const struct gl_pixelstore_attrib *unpack, - const GLvoid *pixels ) -{ - const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0; - const GLint desty = y; - GLint row, skipPixels; - - if (type != GL_BYTE && - type != GL_UNSIGNED_BYTE && - type != GL_SHORT && - type != GL_UNSIGNED_SHORT && - type != GL_INT && - type != GL_UNSIGNED_INT && - type != GL_FLOAT && - type != GL_BITMAP) { - _mesa_error( ctx, GL_INVALID_ENUM, "glDrawPixels(stencil type)"); - return; - } - - if (ctx->Visual.stencilBits == 0) { - _mesa_error( ctx, GL_INVALID_OPERATION, "glDrawPixels(no stencil buffer)"); - return; - } - - /* 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_address2d(unpack, pixels, - width, height, - GL_COLOR_INDEX, type, - row, skipPixels); - _mesa_unpack_index_span(ctx, spanWidth, destType, values, - type, source, 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) { - _swrast_write_zoomed_stencil_span(ctx, (GLuint) spanWidth, - spanX, spanY, values, desty, 0); - } - else { - _swrast_write_stencil_span(ctx, spanWidth, spanX, spanY, values); - } - } - skipPixels += spanWidth; - } -} - - -/* - * Draw depth image. - */ -static void -draw_depth_pixels( GLcontext *ctx, GLint x, GLint y, - GLsizei width, GLsizei height, - GLenum type, - const struct gl_pixelstore_attrib *unpack, - const GLvoid *pixels ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - 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 GLint desty = y; - struct sw_span span; - - INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_Z); - - if (type != GL_BYTE - && type != GL_UNSIGNED_BYTE - && type != GL_SHORT - && type != GL_UNSIGNED_SHORT - && type != GL_INT - && type != GL_UNSIGNED_INT - && type != GL_FLOAT) { - _mesa_error(ctx, GL_INVALID_ENUM, "glDrawPixels(type)"); - return; - } - - _swrast_span_default_color(ctx, &span); - - if (swrast->_FogEnabled) - _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 - && width <= MAX_WIDTH) { - /* Special case: directly write 16-bit depth values */ - GLint row, spanY = y; - for (row = 0; row < height; row++, spanY++) { - const GLushort *zSrc = (const GLushort *) - _mesa_image_address2d(unpack, pixels, width, height, - GL_DEPTH_COMPONENT, type, row, 0); - GLint i; - for (i = 0; i < width; i++) - span.array->z[i] = zSrc[i]; - span.x = x; - span.y = spanY; - span.end = width; - _swrast_write_rgba_span(ctx, &span); - } - } - else if (type == GL_UNSIGNED_INT - && sizeof(GLdepth) == 4 - && !bias_or_scale - && !zoom - && ctx->Visual.rgbMode - && width <= MAX_WIDTH) { - /* Special case: shift 32-bit values down to ctx->Visual.depthBits */ - const GLint shift = 32 - ctx->Visual.depthBits; - GLint row, spanY = y; - for (row = 0; row < height; row++, spanY++) { - const GLuint *zSrc = (const GLuint *) - _mesa_image_address2d(unpack, pixels, width, height, - GL_DEPTH_COMPONENT, type, row, 0); - if (shift == 0) { - MEMCPY(span.array->z, zSrc, width * sizeof(GLdepth)); - } - else { - GLint col; - for (col = 0; col < width; col++) - span.array->z[col] = zSrc[col] >> shift; - } - span.x = x; - span.y = spanY; - span.end = width; - _swrast_write_rgba_span(ctx, &span); - } - } - else { - /* General case */ - const GLfloat depthMax = ctx->DrawBuffer->_DepthMaxF; - 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 *zSrc = _mesa_image_address2d(unpack, - pixels, width, height, - GL_DEPTH_COMPONENT, type, - 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, - zSrc, unpack); - /* clamp depth values to [0,1] and convert from floats to ints */ - { - GLuint i; - for (i = 0; i < span.end; i++) { - span.array->z[i] = (GLdepth) (floatSpan[i] * depthMax); - } - } - 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); - } - } - skipPixels += spanEnd; - } - } -} - - - -/* - * Draw RGBA image. - */ -static void -draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y, - GLsizei width, GLsizei height, - GLenum format, GLenum type, - const struct gl_pixelstore_attrib *unpack, - const GLvoid *pixels ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - struct gl_renderbuffer *rb = NULL; /* only used for quickDraw path */ - const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0; - const GLint desty = y; - GLboolean quickDraw; - GLfloat *convImage = NULL; - GLuint transferOps = ctx->_ImageTransferState; - struct sw_span span; - - INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA); - - if (!_mesa_is_legal_format_and_type(ctx, format, type)) { - _mesa_error(ctx, GL_INVALID_ENUM, "glDrawPixels(format or type)"); - return; - } - - /* Try an optimized glDrawPixels first */ - if (fast_draw_pixels(ctx, x, y, width, height, format, type, unpack, pixels)) - return; - - if (ctx->Depth.Test) - _swrast_span_default_z(ctx, &span); - if (swrast->_FogEnabled) - _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 - && y + height <= (GLint) ctx->DrawBuffer->Height - && ctx->DrawBuffer->_NumColorDrawBuffers[0] == 1) { - quickDraw = GL_TRUE; - rb = ctx->DrawBuffer->_ColorDrawBuffers[0][0]; - } - else { - quickDraw = GL_FALSE; - rb = NULL; - } - - if (ctx->Pixel.Convolution2DEnabled || ctx->Pixel.Separable2DEnabled) { - /* Convolution has to be handled specially. We'll create an - * intermediate image, applying all pixel transfer operations - * up to convolution. Then we'll convolve the image. Then - * we'll proceed with the rest of the transfer operations and - * rasterize the image. - */ - GLint row; - GLfloat *dest, *tmpImage; - - tmpImage = (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat)); - if (!tmpImage) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glDrawPixels"); - return; - } - convImage = (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat)); - if (!convImage) { - _mesa_free(tmpImage); - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glDrawPixels"); - return; - } - - /* Unpack the image and apply transfer ops up to convolution */ - dest = tmpImage; - for (row = 0; row < height; row++) { - const GLvoid *source = _mesa_image_address2d(unpack, - pixels, width, height, format, type, row, 0); - _mesa_unpack_color_span_float(ctx, width, GL_RGBA, (GLfloat *) dest, - format, type, source, unpack, - transferOps & IMAGE_PRE_CONVOLUTION_BITS); - dest += width * 4; - } - - /* 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); - } - _mesa_free(tmpImage); - - /* continue transfer ops and draw the convolved image */ - unpack = &ctx->DefaultPacking; - pixels = convImage; - format = GL_RGBA; - type = GL_FLOAT; - transferOps &= IMAGE_POST_CONVOLUTION_BITS; - } - - /* - * General solution - */ - { - 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_address2d(unpack, - pixels, width, height, format, type, 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_color_span_chan(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); - } - - /* draw the span */ - if (quickDraw) { - rb->PutRow(ctx, rb, span.end, span.x, span.y, - 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); - } - } - - skipPixels += spanEnd; - } - } - - if (convImage) { - _mesa_free(convImage); - } -} - - - -/* - * Execute glDrawPixels - */ -void -_swrast_DrawPixels( GLcontext *ctx, - GLint x, GLint y, - GLsizei width, GLsizei height, - GLenum format, GLenum type, - const struct gl_pixelstore_attrib *unpack, - const GLvoid *pixels ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - - if (swrast->NewState) - _swrast_validate_derived( ctx ); - - if (unpack->BufferObj->Name) { - /* unpack from PBO */ - GLubyte *buf; - if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, - format, type, pixels)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glDrawPixels(invalid PBO access)"); - return; - } - buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, - GL_READ_ONLY_ARB, - unpack->BufferObj); - if (!buf) { - /* buffer is already mapped - that's an error */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawPixels(PBO is mapped)"); - return; - } - pixels = ADD_POINTERS(buf, pixels); - } - - RENDER_START(swrast,ctx); - - switch (format) { - case GL_STENCIL_INDEX: - draw_stencil_pixels( ctx, x, y, width, height, type, unpack, pixels ); - break; - case GL_DEPTH_COMPONENT: - draw_depth_pixels( ctx, x, y, width, height, type, unpack, pixels ); - break; - case GL_COLOR_INDEX: - if (ctx->Visual.rgbMode) - draw_rgba_pixels(ctx, x,y, width, height, format, type, unpack, pixels); - else - draw_index_pixels(ctx, x, y, width, height, type, unpack, pixels); - break; - case GL_RED: - case GL_GREEN: - case GL_BLUE: - case GL_ALPHA: - case GL_LUMINANCE: - case GL_LUMINANCE_ALPHA: - case GL_RGB: - case GL_BGR: - case GL_RGBA: - case GL_BGRA: - case GL_ABGR_EXT: - draw_rgba_pixels(ctx, x, y, width, height, format, type, unpack, pixels); - break; - default: - _mesa_error( ctx, GL_INVALID_ENUM, "glDrawPixels(format)" ); - /* don't return yet, clean-up */ - } - - RENDER_FINISH(swrast,ctx); - - if (unpack->BufferObj->Name) { - /* done with PBO so unmap it now */ - ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, - unpack->BufferObj); - } -} - - - -#if 0 /* experimental */ -/* - * Execute glDrawDepthPixelsMESA(). - */ -void -_swrast_DrawDepthPixelsMESA( GLcontext *ctx, - GLint x, GLint y, - GLsizei width, GLsizei height, - GLenum colorFormat, GLenum colorType, - const GLvoid *colors, - GLenum depthType, const GLvoid *depths, - const struct gl_pixelstore_attrib *unpack ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - - if (swrast->NewState) - _swrast_validate_derived( ctx ); - - RENDER_START(swrast,ctx); - - switch (colorFormat) { - case GL_COLOR_INDEX: - if (ctx->Visual.rgbMode) - draw_rgba_pixels(ctx, x,y, width, height, colorFormat, colorType, unpack, colors); - else - draw_index_pixels(ctx, x, y, width, height, colorType, unpack, colors); - break; - case GL_RED: - case GL_GREEN: - case GL_BLUE: - case GL_ALPHA: - case GL_LUMINANCE: - case GL_LUMINANCE_ALPHA: - case GL_RGB: - case GL_BGR: - case GL_RGBA: - case GL_BGRA: - case GL_ABGR_EXT: - draw_rgba_pixels(ctx, x, y, width, height, colorFormat, colorType, unpack, colors); - break; - default: - _mesa_error( ctx, GL_INVALID_ENUM, - "glDrawDepthPixelsMESA(colorFormat)" ); - } - - RENDER_FINISH(swrast,ctx); -} -#endif |