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authormarha <marha@users.sourceforge.net>2009-10-08 13:15:52 +0000
committermarha <marha@users.sourceforge.net>2009-10-08 13:15:52 +0000
commita0c4815433ccd57322f4f7703ca35e9ccfa59250 (patch)
treef5213802ec12adb86ec3136001c1c29fe5343700 /mesalib/src/mesa/swrast/s_imaging.c
parentc73dc01b6de45612b24dc2dd34fba24d81ebf46c (diff)
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Added MesaLib-7.6
Diffstat (limited to 'mesalib/src/mesa/swrast/s_imaging.c')
-rw-r--r--mesalib/src/mesa/swrast/s_imaging.c196
1 files changed, 196 insertions, 0 deletions
diff --git a/mesalib/src/mesa/swrast/s_imaging.c b/mesalib/src/mesa/swrast/s_imaging.c
new file mode 100644
index 000000000..3578b713f
--- /dev/null
+++ b/mesalib/src/mesa/swrast/s_imaging.c
@@ -0,0 +1,196 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5
+ *
+ * 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.
+ */
+
+/* KW: Moved these here to remove knowledge of swrast from core mesa.
+ * Should probably pull the entire software implementation of these
+ * extensions into either swrast or a sister module.
+ */
+
+#include "main/glheader.h"
+#include "main/colortab.h"
+#include "main/convolve.h"
+#include "s_context.h"
+#include "s_span.h"
+
+
+void
+_swrast_CopyColorTable( GLcontext *ctx,
+ GLenum target, GLenum internalformat,
+ GLint x, GLint y, GLsizei width)
+{
+ GLchan data[MAX_WIDTH][4];
+ struct gl_buffer_object *bufferSave;
+
+ if (!ctx->ReadBuffer->_ColorReadBuffer) {
+ /* no readbuffer - OK */
+ return;
+ }
+
+ if (width > MAX_WIDTH)
+ width = MAX_WIDTH;
+
+ swrast_render_start(ctx);
+
+ /* read the data from framebuffer */
+ _swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
+ width, x, y, CHAN_TYPE, data );
+
+ swrast_render_finish(ctx);
+
+ /* save PBO binding */
+ bufferSave = ctx->Unpack.BufferObj;
+ ctx->Unpack.BufferObj = ctx->Shared->NullBufferObj;
+
+ _mesa_ColorTable(target, internalformat, width, GL_RGBA, CHAN_TYPE, data);
+
+ /* restore PBO binding */
+ ctx->Unpack.BufferObj = bufferSave;
+}
+
+
+void
+_swrast_CopyColorSubTable( GLcontext *ctx,GLenum target, GLsizei start,
+ GLint x, GLint y, GLsizei width)
+{
+ GLchan data[MAX_WIDTH][4];
+ struct gl_buffer_object *bufferSave;
+
+ if (!ctx->ReadBuffer->_ColorReadBuffer) {
+ /* no readbuffer - OK */
+ return;
+ }
+
+ if (width > MAX_WIDTH)
+ width = MAX_WIDTH;
+
+ swrast_render_start(ctx);
+
+ /* read the data from framebuffer */
+ _swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
+ width, x, y, CHAN_TYPE, data );
+
+ swrast_render_finish(ctx);
+
+ /* save PBO binding */
+ bufferSave = ctx->Unpack.BufferObj;
+ ctx->Unpack.BufferObj = ctx->Shared->NullBufferObj;
+
+ _mesa_ColorSubTable(target, start, width, GL_RGBA, CHAN_TYPE, data);
+
+ /* restore PBO binding */
+ ctx->Unpack.BufferObj = bufferSave;
+}
+
+
+void
+_swrast_CopyConvolutionFilter1D(GLcontext *ctx, GLenum target,
+ GLenum internalFormat,
+ GLint x, GLint y, GLsizei width)
+{
+ GLchan rgba[MAX_CONVOLUTION_WIDTH][4];
+ struct gl_buffer_object *bufferSave;
+
+ if (!ctx->ReadBuffer->_ColorReadBuffer) {
+ /* no readbuffer - OK */
+ return;
+ }
+
+ swrast_render_start(ctx);
+
+ /* read the data from framebuffer */
+ _swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
+ width, x, y, CHAN_TYPE, rgba );
+
+ swrast_render_finish(ctx);
+
+ /* save PBO binding */
+ bufferSave = ctx->Unpack.BufferObj;
+ ctx->Unpack.BufferObj = ctx->Shared->NullBufferObj;
+
+ /* store as convolution filter */
+ _mesa_ConvolutionFilter1D(target, internalFormat, width,
+ GL_RGBA, CHAN_TYPE, rgba);
+
+ /* restore PBO binding */
+ ctx->Unpack.BufferObj = bufferSave;
+}
+
+
+void
+_swrast_CopyConvolutionFilter2D(GLcontext *ctx, GLenum target,
+ GLenum internalFormat,
+ GLint x, GLint y, GLsizei width, GLsizei height)
+{
+ struct gl_pixelstore_attrib packSave;
+ GLchan rgba[MAX_CONVOLUTION_HEIGHT][MAX_CONVOLUTION_WIDTH][4];
+ GLint i;
+ struct gl_buffer_object *bufferSave;
+
+ if (!ctx->ReadBuffer->_ColorReadBuffer) {
+ /* no readbuffer - OK */
+ return;
+ }
+
+ swrast_render_start(ctx);
+
+ /* read pixels from framebuffer */
+ for (i = 0; i < height; i++) {
+ _swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
+ width, x, y + i, CHAN_TYPE, rgba[i] );
+ }
+
+ swrast_render_finish(ctx);
+
+ /*
+ * HACK: save & restore context state so we can store this as a
+ * convolution filter via the GL api. Doesn't call any callbacks
+ * hanging off ctx->Unpack statechanges.
+ */
+
+ packSave = ctx->Unpack; /* save pixel packing params */
+
+ ctx->Unpack.Alignment = 1;
+ ctx->Unpack.RowLength = MAX_CONVOLUTION_WIDTH;
+ ctx->Unpack.SkipPixels = 0;
+ ctx->Unpack.SkipRows = 0;
+ ctx->Unpack.ImageHeight = 0;
+ ctx->Unpack.SkipImages = 0;
+ ctx->Unpack.SwapBytes = GL_FALSE;
+ ctx->Unpack.LsbFirst = GL_FALSE;
+ ctx->Unpack.BufferObj = ctx->Shared->NullBufferObj;
+ ctx->NewState |= _NEW_PACKUNPACK;
+
+ /* save PBO binding */
+ bufferSave = ctx->Unpack.BufferObj;
+ ctx->Unpack.BufferObj = ctx->Shared->NullBufferObj;
+
+ _mesa_ConvolutionFilter2D(target, internalFormat, width, height,
+ GL_RGBA, CHAN_TYPE, rgba);
+
+ /* restore PBO binding */
+ ctx->Unpack.BufferObj = bufferSave;
+
+ ctx->Unpack = packSave; /* restore pixel packing params */
+ ctx->NewState |= _NEW_PACKUNPACK;
+}