aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/extras/Mesa/src/mesa/swrast/s_drawpix.c
diff options
context:
space:
mode:
authorMike Gabriel <mike.gabriel@das-netzwerkteam.de>2017-02-17 16:11:01 +0100
committerftrapero <frantracer@gmail.com>2017-06-15 14:16:37 +0200
commit209657f69055b17b00c3db3f99c7f411a6e8d176 (patch)
tree8d6ae61dfda54305a712bded9caff9ee608abf4e /nx-X11/extras/Mesa/src/mesa/swrast/s_drawpix.c
parent459021c165c7023ee75f524060ca270985b547c1 (diff)
downloadnx-libs-209657f69055b17b00c3db3f99c7f411a6e8d176.tar.gz
nx-libs-209657f69055b17b00c3db3f99c7f411a6e8d176.tar.bz2
nx-libs-209657f69055b17b00c3db3f99c7f411a6e8d176.zip
nx-X11/extras/Mesa: Drop bundled Mesa, place a symlink to imported Git subtree of Mesa_6.4.1 instead.
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.c1007
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