| 1 | /* Copyright (c) 2001, Stanford University
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| 2 | * All rights reserved
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| 3 | *
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| 4 | * See the file LICENSE.txt for information on redistributing this software.
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| 5 | */
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| 6 |
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| 7 | #include "cr_spu.h"
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| 8 | #include "chromium.h"
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| 9 | #include "cr_error.h"
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| 10 | #include "cr_mem.h"
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| 11 | #include "cr_net.h"
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| 12 | #include "cr_pixeldata.h"
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| 13 | #include "cr_unpack.h"
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| 14 | #include "server_dispatch.h"
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| 15 | #include "server.h"
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| 16 |
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| 17 |
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| 18 | void SERVER_DISPATCH_APIENTRY
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| 19 | crServerDispatchReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
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| 20 | GLenum format, GLenum type, GLvoid *pixels)
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| 21 | {
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| 22 | CRMessageReadPixels *rp;
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| 23 | const GLint stride = READ_DATA( 24, GLint );
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| 24 | const GLint alignment = READ_DATA( 28, GLint );
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| 25 | const GLint skipRows = READ_DATA( 32, GLint );
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| 26 | const GLint skipPixels = READ_DATA( 36, GLint );
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| 27 | const GLint bytes_per_row = READ_DATA( 40, GLint );
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| 28 | const GLint rowLength = READ_DATA( 44, GLint );
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| 29 | const int msg_len = sizeof(*rp) + bytes_per_row * height;
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| 30 |
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| 31 | CRASSERT(bytes_per_row > 0);
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| 32 |
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| 33 | rp = (CRMessageReadPixels *) crAlloc( msg_len );
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| 34 |
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| 35 | /* Note: the ReadPixels data gets densely packed into the buffer
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| 36 | * (no skip pixels, skip rows, etc. It's up to the receiver (pack spu,
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| 37 | * tilesort spu, etc) to apply the real PixelStore packing parameters.
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| 38 | */
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| 39 | cr_server.head_spu->dispatch_table.ReadPixels( x, y, width, height,
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| 40 | format, type, rp + 1);
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| 41 |
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| 42 | rp->header.type = CR_MESSAGE_READ_PIXELS;
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| 43 | rp->width = width;
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| 44 | rp->height = height;
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| 45 | rp->bytes_per_row = bytes_per_row;
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| 46 | rp->stride = stride;
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| 47 | rp->format = format;
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| 48 | rp->type = type;
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| 49 | rp->alignment = alignment;
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| 50 | rp->skipRows = skipRows;
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| 51 | rp->skipPixels = skipPixels;
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| 52 | rp->rowLength = rowLength;
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| 53 |
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| 54 | /* <pixels> points to the 8-byte network pointer */
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| 55 | crMemcpy( &rp->pixels, pixels, sizeof(rp->pixels) );
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| 56 |
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| 57 | crNetSend( cr_server.curClient->conn, NULL, rp, msg_len );
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| 58 | crFree( rp );
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| 59 | }
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