/* * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) * Copyright (C) 1991-2000 Silicon Graphics, Inc. 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 including the dates of first publication and * either this permission notice or a reference to * http://oss.sgi.com/projects/FreeB/ * 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 * SILICON GRAPHICS, INC. 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. * * Except as contained in this notice, the name of Silicon Graphics, Inc. * shall not be used in advertising or otherwise to promote the sale, use or * other dealings in this Software without prior written authorization from * Silicon Graphics, Inc. */ #ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #else #include "glheader.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 = bits_to_bytes(groupsPerRow); 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: #ifndef _MSC_VER case GL_DEPTH_STENCIL_MESA: #endif 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: #ifndef _MSC_VER case GL_UNSIGNED_SHORT_15_1_MESA: case GL_UNSIGNED_SHORT_1_15_REV_MESA: bytesPerElement = 2; elementsPerGroup = 1; break; #endif 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: #ifndef _MSC_VER case GL_UNSIGNED_INT_24_8_MESA: case GL_UNSIGNED_INT_8_24_REV_MESA: #endif 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 __glXDrawArraysReqSize( 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; }