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xserver/GL/glx/rensize.c

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/* $XFree86: xc/programs/Xserver/GL/glx/rensize.c,v 1.6 2003/09/28 20:15:43 alanh Exp $ */
/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
**
** http://oss.sgi.com/projects/FreeB
**
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
**
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
**
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
**
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <GL/gl.h>
#include "glxserver.h"
#include "GL/glxproto.h"
#include "unpack.h"
#include "indirect_size.h"
#include "indirect_reqsize.h"
#define SWAPL(a) \
(((a & 0xff000000U)>>24) | ((a & 0xff0000U)>>8) | \
((a & 0xff00U)<<8) | ((a & 0xffU)<<24))
static int Map1Size( GLint k, GLint order)
{
if (order <= 0 || k < 0) return -1;
return k * order;
}
int __glXMap1dReqSize( const GLbyte *pc, Bool swap )
{
GLenum target;
GLint order, k;
target = *(GLenum*) (pc + 16);
order = *(GLint*) (pc + 20);
if (swap) {
target = SWAPL( target );
order = SWAPL( order );
}
k = __glMap1d_size( target );
return 8 * Map1Size( k, order );
}
int __glXMap1fReqSize( const GLbyte *pc, Bool swap )
{
GLenum target;
GLint order, k;
target = *(GLenum *)(pc + 0);
order = *(GLint *)(pc + 12);
if (swap) {
target = SWAPL( target );
order = SWAPL( order );
}
k = __glMap1f_size(target);
return 4 * Map1Size(k, order);
}
static int Map2Size(int k, int majorOrder, int minorOrder)
{
if (majorOrder <= 0 || minorOrder <= 0 || k < 0) return -1;
return k * majorOrder * minorOrder;
}
int __glXMap2dReqSize( const GLbyte *pc, Bool swap )
{
GLenum target;
GLint uorder, vorder, k;
target = *(GLenum *)(pc + 32);
uorder = *(GLint *)(pc + 36);
vorder = *(GLint *)(pc + 40);
if (swap) {
target = SWAPL( target );
uorder = SWAPL( uorder );
vorder = SWAPL( vorder );
}
k = __glMap2d_size( target );
return 8 * Map2Size( k, uorder, vorder );
}
int __glXMap2fReqSize( const GLbyte *pc, Bool swap )
{
GLenum target;
GLint uorder, vorder, k;
target = *(GLenum *)(pc + 0);
uorder = *(GLint *)(pc + 12);
vorder = *(GLint *)(pc + 24);
if (swap) {
target = SWAPL( target );
uorder = SWAPL( uorder );
vorder = SWAPL( vorder );
}
k = __glMap2f_size( target );
return 4 * Map2Size( k, uorder, vorder );
}
/**
* Calculate the size of an image.
*
* The size of an image sent to the server from the client or sent from the
* server to the client is calculated. The size is based on the dimensions
* of the image, the type of pixel data, padding in the image, and the
* alignment requirements of the image.
*
* \param format Format of the pixels. Same as the \c format parameter
* to \c glTexImage1D
* \param type Type of the pixel data. Same as the \c type parameter
* to \c glTexImage1D
* \param target Typically the texture target of the image. If the
* target is one of \c GL_PROXY_*, the size returned is
* always zero. For uses that do not have a texture target
* (e.g, glDrawPixels), zero should be specified.
* \param w Width of the image data. Must be >= 1.
* \param h Height of the image data. Must be >= 1, even for 1D
* images.
* \param d Depth of the image data. Must be >= 1, even for 1D or
* 2D images.
* \param imageHeight If non-zero, defines the true height of a volumetric
* image. This value will be used instead of \c h for
* calculating the size of the image.
* \param rowLength If non-zero, defines the true width of an image. This
* value will be used instead of \c w for calculating the
* size of the image.
* \param skipImages Number of extra layers of image data in a volumtric
* image that are to be skipped before the real data.
* \param skipRows Number of extra rows of image data in an image that are
* to be skipped before the real data.
* \param alignment Specifies the alignment for the start of each pixel row
* in memory. This value must be one of 1, 2, 4, or 8.
*
* \returns
* The size of the image is returned. If the specified \c format and \c type
* are invalid, -1 is returned. If \c target is one of \c GL_PROXY_*, zero
* is returned.
*/
int __glXImageSize( GLenum format, GLenum type, GLenum target,
GLsizei w, GLsizei h, GLsizei d,
GLint imageHeight, GLint rowLength,
GLint skipImages, GLint skipRows, GLint alignment )
{
GLint bytesPerElement, elementsPerGroup, groupsPerRow;
GLint groupSize, rowSize, padding, imageSize;
if (w < 0 || h < 0 || d < 0 ||
(type == GL_BITMAP &&
(format != GL_COLOR_INDEX && format != GL_STENCIL_INDEX))) {
return -1;
}
if (w==0 || h==0 || d == 0) return 0;
switch( target ) {
case GL_PROXY_TEXTURE_1D:
case GL_PROXY_TEXTURE_2D:
case GL_PROXY_TEXTURE_3D:
case GL_PROXY_TEXTURE_4D_SGIS:
case GL_PROXY_TEXTURE_CUBE_MAP:
case GL_PROXY_TEXTURE_RECTANGLE_ARB:
case GL_PROXY_HISTOGRAM:
case GL_PROXY_COLOR_TABLE:
case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
case GL_PROXY_POST_IMAGE_TRANSFORM_COLOR_TABLE_HP:
return 0;
}
if (type == GL_BITMAP) {
if (rowLength > 0) {
groupsPerRow = rowLength;
} else {
groupsPerRow = w;
}
rowSize = (groupsPerRow + 7) >> 3;
padding = (rowSize % alignment);
if (padding) {
rowSize += alignment - padding;
}
return ((h + skipRows) * rowSize);
} else {
switch(format) {
case GL_COLOR_INDEX:
case GL_STENCIL_INDEX:
case GL_DEPTH_COMPONENT:
case GL_RED:
case GL_GREEN:
case GL_BLUE:
case GL_ALPHA:
case GL_LUMINANCE:
case GL_INTENSITY:
elementsPerGroup = 1;
break;
case GL_422_EXT:
case GL_422_REV_EXT:
case GL_422_AVERAGE_EXT:
case GL_422_REV_AVERAGE_EXT:
case GL_DEPTH_STENCIL_NV:
case GL_DEPTH_STENCIL_MESA:
case GL_YCBCR_MESA:
case GL_LUMINANCE_ALPHA:
elementsPerGroup = 2;
break;
case GL_RGB:
case GL_BGR:
elementsPerGroup = 3;
break;
case GL_RGBA:
case GL_BGRA:
case GL_ABGR_EXT:
elementsPerGroup = 4;
break;
default:
return -1;
}
switch(type) {
case GL_UNSIGNED_BYTE:
case GL_BYTE:
bytesPerElement = 1;
break;
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
bytesPerElement = 1;
elementsPerGroup = 1;
break;
case GL_UNSIGNED_SHORT:
case GL_SHORT:
bytesPerElement = 2;
break;
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
case GL_UNSIGNED_SHORT_8_8_APPLE:
case GL_UNSIGNED_SHORT_8_8_REV_APPLE:
case GL_UNSIGNED_SHORT_15_1_MESA:
case GL_UNSIGNED_SHORT_1_15_REV_MESA:
bytesPerElement = 2;
elementsPerGroup = 1;
break;
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
bytesPerElement = 4;
break;
case GL_UNSIGNED_INT_8_8_8_8:
case GL_UNSIGNED_INT_8_8_8_8_REV:
case GL_UNSIGNED_INT_10_10_10_2:
case GL_UNSIGNED_INT_2_10_10_10_REV:
case GL_UNSIGNED_INT_24_8_NV:
case GL_UNSIGNED_INT_24_8_MESA:
case GL_UNSIGNED_INT_8_24_REV_MESA:
bytesPerElement = 4;
elementsPerGroup = 1;
break;
default:
return -1;
}
groupSize = bytesPerElement * elementsPerGroup;
if (rowLength > 0) {
groupsPerRow = rowLength;
} else {
groupsPerRow = w;
}
rowSize = groupsPerRow * groupSize;
padding = (rowSize % alignment);
if (padding) {
rowSize += alignment - padding;
}
if (imageHeight > 0) {
imageSize = (imageHeight + skipRows) * rowSize;
} else {
imageSize = (h + skipRows) * rowSize;
}
return ((d + skipImages) * imageSize);
}
}
/* XXX this is used elsewhere - should it be exported from glxserver.h? */
int __glXTypeSize(GLenum enm)
{
switch(enm) {
case GL_BYTE: return sizeof(GLbyte);
case GL_UNSIGNED_BYTE: return sizeof(GLubyte);
case GL_SHORT: return sizeof(GLshort);
case GL_UNSIGNED_SHORT: return sizeof(GLushort);
case GL_INT: return sizeof(GLint);
case GL_UNSIGNED_INT: return sizeof(GLint);
case GL_FLOAT: return sizeof(GLfloat);
case GL_DOUBLE: return sizeof(GLdouble);
default: return -1;
}
}
int __glXDrawArraysSize( const GLbyte *pc, Bool swap )
{
__GLXdispatchDrawArraysHeader *hdr = (__GLXdispatchDrawArraysHeader *) pc;
__GLXdispatchDrawArraysComponentHeader *compHeader;
GLint numVertexes = hdr->numVertexes;
GLint numComponents = hdr->numComponents;
GLint arrayElementSize = 0;
int i;
if (swap) {
numVertexes = SWAPL( numVertexes );
numComponents = SWAPL( numComponents );
}
pc += sizeof(__GLXdispatchDrawArraysHeader);
compHeader = (__GLXdispatchDrawArraysComponentHeader *) pc;
for (i=0; i<numComponents; i++) {
GLenum datatype = compHeader[i].datatype;
GLint numVals = compHeader[i].numVals;
GLint component = compHeader[i].component;
if (swap) {
datatype = SWAPL( datatype );
numVals = SWAPL( numVals );
component = SWAPL( component );
}
switch (component) {
case GL_VERTEX_ARRAY:
case GL_COLOR_ARRAY:
case GL_TEXTURE_COORD_ARRAY:
break;
case GL_SECONDARY_COLOR_ARRAY:
case GL_NORMAL_ARRAY:
if (numVals != 3) {
/* bad size */
return -1;
}
break;
case GL_FOG_COORD_ARRAY:
case GL_INDEX_ARRAY:
if (numVals != 1) {
/* bad size */
return -1;
}
break;
case GL_EDGE_FLAG_ARRAY:
if ((numVals != 1) && (datatype != GL_UNSIGNED_BYTE)) {
/* bad size or bad type */
return -1;
}
break;
default:
/* unknown component type */
return -1;
}
arrayElementSize += __GLX_PAD(numVals * __glXTypeSize(datatype));
pc += sizeof(__GLXdispatchDrawArraysComponentHeader);
}
return ((numComponents * sizeof(__GLXdispatchDrawArraysComponentHeader)) +
(numVertexes * arrayElementSize));
}
int __glXSeparableFilter2DReqSize( const GLbyte *pc, Bool swap )
{
__GLXdispatchConvolutionFilterHeader *hdr =
(__GLXdispatchConvolutionFilterHeader *) pc;
GLint image1size, image2size;
GLenum format = hdr->format;
GLenum type = hdr->type;
GLint w = hdr->width;
GLint h = hdr->height;
GLint rowLength = hdr->rowLength;
GLint alignment = hdr->alignment;
if (swap) {
format = SWAPL( format );
type = SWAPL( type );
w = SWAPL( w );
h = SWAPL( h );
rowLength = SWAPL( rowLength );
alignment = SWAPL( alignment );
}
/* XXX Should rowLength be used for either or both image? */
image1size = __glXImageSize( format, type, 0, w, 1, 1,
0, rowLength, 0, 0, alignment );
image1size = __GLX_PAD(image1size);
image2size = __glXImageSize( format, type, 0, h, 1, 1,
0, rowLength, 0, 0, alignment );
return image1size + image2size;
}
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