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Diffstat (limited to 'src/mesa/drivers/dri/radeon/radeon_subset_readpix.c')
-rw-r--r--src/mesa/drivers/dri/radeon/radeon_subset_readpix.c246
1 files changed, 0 insertions, 246 deletions
diff --git a/src/mesa/drivers/dri/radeon/radeon_subset_readpix.c b/src/mesa/drivers/dri/radeon/radeon_subset_readpix.c
deleted file mode 100644
index f72d3b8472..0000000000
--- a/src/mesa/drivers/dri/radeon/radeon_subset_readpix.c
+++ /dev/null
@@ -1,246 +0,0 @@
-/**
- * \file radeon_subset_readpix.c
- * \brief Pixel reading.
- *
- * \author Keith Whitwell <keith@tungstengraphics.com>
- * \author Brian Paul <brian@tungstengraphics.com>
- */
-
-/*
- * Copyright 2003 ATI Technologies Inc., Ontario, Canada, and
- * Tungsten Graphics Inc., Cedar Park, Texas.
- *
- * 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
- * on the rights to use, copy, modify, merge, publish, distribute, sub
- * license, 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 (including the next
- * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
- * ATI, TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS 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.
- */
-
-/* $XFree86$ */
-
-#include "glheader.h"
-#include "mtypes.h"
-#include "colormac.h"
-#include "context.h"
-#include "enums.h"
-#include "imports.h"
-/*#include "mmath.h" */
-#include "macros.h"
-#include "state.h"
-
-#include "radeon_context.h"
-#include "radeon_ioctl.h"
-#include "radeon_state.h"
-#include "radeon_subset.h"
-
-/**
- * \brief Read pixel in RGBA format on a Radeon 16bpp frame buffer.
- *
- * \param rgba destination pointer.
- * \param ptr pointer to the pixel in the frame buffer.
- */
-#define READ_RGBA_16( rgba, ptr ) \
-do { \
- GLushort p = *(GLushort *)ptr; \
- rgba[0] = ((p >> 8) & 0xf8) * 255 / 0xf8; \
- rgba[1] = ((p >> 3) & 0xfc) * 255 / 0xfc; \
- rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8; \
- rgba[3] = 0xff; \
-} while (0)
-
-/**
- * \brief Read pixel in RGBA format on a Radeon 32bpp frame buffer.
- *
- * \param rgba destination pointer.
- * \param ptr pointer to the pixel in the frame buffer.
- */
-#define READ_RGBA_32( rgba, ptr ) \
-do { \
- GLuint p = *(GLuint *)ptr; \
- rgba[0] = (p >> 16) & 0xff; \
- rgba[1] = (p >> 8) & 0xff; \
- rgba[2] = (p >> 0) & 0xff; \
- rgba[3] = (p >> 24) & 0xff; \
-} while (0)
-
-/**
- * \brief Read a span in RGBA format.
- *
- * \param ctx GL context.
- * \param n number of pixels in the span.
- * \param x x position of the span start.
- * \param y y position of the span.
- * \param rgba destination buffer.
- *
- * Calculates the pointer to the span start in the frame buffer and uses either
- * #READ_RGBA_16 or #READ_RGBA_32 macros to copy the values.
- */
-static void ReadRGBASpan( const GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- GLubyte rgba[][4])
-{
- radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
- radeonScreenPtr radeonScreen = rmesa->radeonScreen;
- __DRIdrawablePrivate *dPriv = rmesa->dri.drawable;
- GLuint cpp = radeonScreen->cpp;
- GLuint pitch = radeonScreen->frontPitch * cpp;
- GLint i;
-
- if (ctx->_RotateMode) {
- char *ptr = (char *)(rmesa->dri.screen->pFB +
- rmesa->state.pixel.readOffset +
- ((dPriv->x + (dPriv->w - y - 1)) * cpp) +
- ((dPriv->y + (dPriv->h - x - 1)) * pitch));
-
- if (cpp == 4)
- for (i = 0; i < n; i++, ptr -= pitch)
- READ_RGBA_32( rgba[i], ptr );
- else
- for (i = 0; i < n; i++, ptr -= pitch)
- READ_RGBA_16( rgba[i], ptr );
- }
- else {
- char *ptr = (char *)(rmesa->dri.screen->pFB +
- rmesa->state.pixel.readOffset +
- ((dPriv->x + x) * cpp) +
- ((dPriv->y + (dPriv->h - y - 1)) * pitch));
-
- if (cpp == 4)
- for (i = 0; i < n; i++, ptr += cpp)
- READ_RGBA_32( rgba[i], ptr );
- else
- for (i = 0; i < n; i++, ptr += cpp)
- READ_RGBA_16( rgba[i], ptr );
- }
-}
-
-
-/**
- * \brief Optimized glReadPixels().
- *
- * To be used with particular pixel formats GL_UNSIGNED_BYTE and GL_RGBA, when pixel
- * scaling, biasing and mapping are disabled.
- *
- * \param x x start position of the reading rectangle.
- * \param y y start position of the reading rectangle.
- * \param width width of the reading rectangle.
- * \param height height of the reading rectangle.
- * \param format pixel format. Must be GL_RGBA.
- * \param type pixel type. Must be GL_UNSIGNED_BYTE.
- * \param pixels pixel data.
- *
- * After asserting the above conditions, compensates for clipping and calls
- * ReadRGBASpan() to read each row.
- */
-void radeonReadPixels( GLint x, GLint y,
- GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- GLvoid *pixels )
-{
- GET_CURRENT_CONTEXT(ctx);
- GLint srcX = x;
- GLint srcY = y;
- GLint readWidth = width; /* actual width read */
- GLint readHeight = height; /* actual height read */
- const struct gl_pixelstore_attrib *packing = &ctx->Pack;
- GLint skipRows = packing->SkipRows;
- GLint skipPixels = packing->SkipPixels;
- GLint rowLength;
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- {
- GLint tmp, tmps;
- tmp = x; x = y; y = tmp;
- tmps = width; width = height; height = tmps;
- }
-
- if (width < 0 || height < 0) {
- _mesa_error( ctx, GL_INVALID_VALUE,
- "glReadPixels(width=%d height=%d)", width, height );
- return;
- }
-
- if (!pixels) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glReadPixels(pixels)" );
- return;
- }
-
- if (ctx->NewState)
- _mesa_update_state(ctx);
-
-
- /* can't do scale, bias, mapping, etc */
- assert(!ctx->_ImageTransferState);
-
- /* can't do fancy pixel packing */
- assert (packing->Alignment == 1 &&
- !packing->SwapBytes &&
- !packing->LsbFirst);
-
-
- if (packing->RowLength > 0)
- rowLength = packing->RowLength;
- else
- rowLength = width;
-
- /* horizontal clipping */
- if (srcX < 0) {
- skipPixels -= srcX;
- readWidth += srcX;
- srcX = 0;
- }
- if (srcX + readWidth > (GLint) ctx->ReadBuffer->Width)
- readWidth -= (srcX + readWidth - (GLint) ctx->ReadBuffer->Width);
- if (readWidth <= 0)
- return;
-
- /* vertical clipping */
- if (srcY < 0) {
- skipRows -= srcY;
- readHeight += srcY;
- srcY = 0;
- }
- if (srcY + readHeight > (GLint) ctx->ReadBuffer->Height)
- readHeight -= (srcY + readHeight - (GLint) ctx->ReadBuffer->Height);
- if (readHeight <= 0)
- return;
-
- /*
- * Ready to read!
- * The window region at (destX, destY) of size (readWidth, readHeight)
- * will be read back.
- * We'll write pixel data to buffer pointed to by "pixels" but we'll
- * skip "skipRows" rows and skip "skipPixels" pixels/row.
- */
- if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
- GLchan *dest = (GLchan *) pixels
- + (skipRows * rowLength + skipPixels) * 4;
- GLint row;
-
- for (row=0; row<readHeight; row++) {
- ReadRGBASpan(ctx, readWidth, srcX, srcY, (GLchan (*)[4]) dest);
- dest += rowLength * 4;
- srcY++;
- }
- }
- else {
- /* can't do this format/type combination */
- assert(0);
- }
-}
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