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Diffstat (limited to 'glx/rensize.c')
| -rw-r--r-- | glx/rensize.c | 423 |
1 files changed, 423 insertions, 0 deletions
diff --git a/glx/rensize.c b/glx/rensize.c new file mode 100644 index 000000000..c69619a61 --- /dev/null +++ b/glx/rensize.c @@ -0,0 +1,423 @@ +/* +** 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 __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; + +} |