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glsize.hpp
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/**************************************************************************
*
* Copyright 2011 Jose Fonseca
* Copyright 2010 VMware, Inc.
* Copyright 2004 IBM Corporation
* 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, sub license,
* 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 (including the next
* paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* AUTHORS,
* AND/OR THEIR SUPPLIERS 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.
*
**************************************************************************/
/*
* Auxiliary functions to compute the size of array/blob arguments, depending.
*/
#pragma once
#include <string.h>
#include <assert.h>
#include <algorithm>
#include "os.hpp"
#include "glimports.hpp"
// Vertex/element formats
static inline size_t
_gl_type_size(GLenum type, GLint size = 1)
{
switch (type) {
case GL_BOOL:
case GL_BYTE:
case GL_UNSIGNED_BYTE:
return size * 1;
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_2_BYTES:
case GL_HALF_FLOAT:
return size * 2;
case GL_3_BYTES:
return size * 3;
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
case GL_4_BYTES:
case GL_FIXED:
return size * 4;
case GL_DOUBLE:
return size * 8;
case GL_INT_2_10_10_10_REV:
case GL_INT_10_10_10_2_OES:
case GL_UNSIGNED_INT_2_10_10_10_REV:
case GL_UNSIGNED_INT_10_10_10_2_OES:
case GL_UNSIGNED_INT_10F_11F_11F_REV:
// packed
return 4;
default:
os::log("apitrace: warning: %s: unknown GLenum 0x%04X\n", __FUNCTION__, type);
return 0;
}
}
static inline void
_gl_uniform_size(GLenum type, GLenum &elemType, GLint &numCols, GLint &numRows) {
numCols = 1;
numRows = 1;
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_HALF_FLOAT:
elemType = type;
break;
case GL_FLOAT:
elemType = GL_FLOAT;
break;
case GL_FLOAT_VEC2:
elemType = GL_FLOAT;
numCols = 2;
break;
case GL_FLOAT_VEC3:
elemType = GL_FLOAT;
numCols = 3;
break;
case GL_FLOAT_VEC4:
elemType = GL_FLOAT;
numCols = 4;
break;
case GL_DOUBLE:
elemType = GL_DOUBLE;
break;
case GL_DOUBLE_VEC2:
elemType = GL_DOUBLE;
numCols = 2;
break;
case GL_DOUBLE_VEC3:
elemType = GL_DOUBLE;
numCols = 3;
break;
case GL_DOUBLE_VEC4:
elemType = GL_DOUBLE;
numCols = 4;
break;
case GL_INT:
elemType = GL_INT;
break;
case GL_INT_VEC2:
elemType = GL_INT;
numCols = 2;
break;
case GL_INT_VEC3:
elemType = GL_INT;
numCols = 3;
break;
case GL_INT_VEC4:
elemType = GL_INT;
numCols = 4;
break;
case GL_UNSIGNED_INT:
elemType = GL_UNSIGNED_INT;
break;
case GL_UNSIGNED_INT_VEC2:
elemType = GL_UNSIGNED_INT;
numCols = 2;
break;
case GL_UNSIGNED_INT_VEC3:
elemType = GL_UNSIGNED_INT;
numCols = 3;
break;
case GL_UNSIGNED_INT_VEC4:
elemType = GL_UNSIGNED_INT;
numCols = 4;
break;
case GL_INT64_ARB:
elemType = GL_INT64_ARB;
break;
case GL_INT64_VEC2_ARB:
elemType = GL_INT64_ARB;
numCols = 2;
break;
case GL_INT64_VEC3_ARB:
elemType = GL_INT64_ARB;
numCols = 3;
break;
case GL_INT64_VEC4_ARB:
elemType = GL_INT64_ARB;
numCols = 4;
break;
case GL_UNSIGNED_INT64_ARB:
elemType = GL_UNSIGNED_INT64_ARB;
break;
case GL_UNSIGNED_INT64_VEC2_ARB:
elemType = GL_UNSIGNED_INT64_ARB;
numCols = 2;
break;
case GL_UNSIGNED_INT64_VEC3_ARB:
elemType = GL_UNSIGNED_INT64_ARB;
numCols = 3;
break;
case GL_UNSIGNED_INT64_VEC4_ARB:
elemType = GL_UNSIGNED_INT64_ARB;
numCols = 4;
break;
case GL_BOOL:
elemType = GL_BOOL;
break;
case GL_BOOL_VEC2:
elemType = GL_BOOL;
numCols = 2;
break;
case GL_BOOL_VEC3:
elemType = GL_BOOL;
numCols = 3;
break;
case GL_BOOL_VEC4:
elemType = GL_BOOL;
numCols = 4;
break;
case GL_FLOAT_MAT2:
elemType = GL_FLOAT;
numCols = 2;
numRows = 2;
break;
case GL_FLOAT_MAT3:
elemType = GL_FLOAT;
numCols = 3;
numRows = 3;
break;
case GL_FLOAT_MAT4:
elemType = GL_FLOAT;
numCols = 4;
numRows = 4;
break;
case GL_FLOAT_MAT2x3:
elemType = GL_FLOAT;
numCols = 2;
numRows = 3;
break;
case GL_FLOAT_MAT2x4:
elemType = GL_FLOAT;
numCols = 2;
numRows = 4;
break;
case GL_FLOAT_MAT3x2:
elemType = GL_FLOAT;
numCols = 3;
numRows = 2;
break;
case GL_FLOAT_MAT3x4:
elemType = GL_FLOAT;
numCols = 3;
numRows = 4;
break;
case GL_FLOAT_MAT4x2:
elemType = GL_FLOAT;
numCols = 4;
numRows = 2;
break;
case GL_FLOAT_MAT4x3:
elemType = GL_FLOAT;
numCols = 4;
numRows = 3;
break;
case GL_DOUBLE_MAT2:
elemType = GL_DOUBLE;
numCols = 2;
numRows = 2;
break;
case GL_DOUBLE_MAT3:
elemType = GL_DOUBLE;
numCols = 3;
numRows = 3;
break;
case GL_DOUBLE_MAT4:
elemType = GL_DOUBLE;
numCols = 4;
numRows = 4;
break;
case GL_DOUBLE_MAT2x3:
elemType = GL_DOUBLE;
numCols = 2;
numRows = 3;
break;
case GL_DOUBLE_MAT2x4:
elemType = GL_DOUBLE;
numCols = 2;
numRows = 4;
break;
case GL_DOUBLE_MAT3x2:
elemType = GL_DOUBLE;
numCols = 3;
numRows = 2;
break;
case GL_DOUBLE_MAT3x4:
elemType = GL_DOUBLE;
numCols = 3;
numRows = 4;
break;
case GL_DOUBLE_MAT4x2:
elemType = GL_DOUBLE;
numCols = 4;
numRows = 2;
break;
case GL_DOUBLE_MAT4x3:
elemType = GL_DOUBLE;
numCols = 4;
numRows = 3;
break;
case GL_SAMPLER_1D:
case GL_SAMPLER_2D:
case GL_SAMPLER_3D:
case GL_SAMPLER_CUBE:
case GL_SAMPLER_1D_SHADOW:
case GL_SAMPLER_2D_SHADOW:
case GL_SAMPLER_1D_ARRAY:
case GL_SAMPLER_2D_ARRAY:
case GL_SAMPLER_CUBE_MAP_ARRAY:
case GL_SAMPLER_1D_ARRAY_SHADOW:
case GL_SAMPLER_2D_ARRAY_SHADOW:
case GL_SAMPLER_2D_MULTISAMPLE:
case GL_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_SAMPLER_CUBE_SHADOW:
case GL_SAMPLER_CUBE_MAP_ARRAY_SHADOW:
case GL_SAMPLER_BUFFER:
case GL_SAMPLER_2D_RECT:
case GL_SAMPLER_2D_RECT_SHADOW:
case GL_INT_SAMPLER_1D:
case GL_INT_SAMPLER_2D:
case GL_INT_SAMPLER_3D:
case GL_INT_SAMPLER_CUBE:
case GL_INT_SAMPLER_1D_ARRAY:
case GL_INT_SAMPLER_2D_ARRAY:
case GL_INT_SAMPLER_CUBE_MAP_ARRAY:
case GL_INT_SAMPLER_2D_MULTISAMPLE:
case GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_INT_SAMPLER_BUFFER:
case GL_INT_SAMPLER_2D_RECT:
case GL_UNSIGNED_INT_SAMPLER_1D:
case GL_UNSIGNED_INT_SAMPLER_2D:
case GL_UNSIGNED_INT_SAMPLER_3D:
case GL_UNSIGNED_INT_SAMPLER_CUBE:
case GL_UNSIGNED_INT_SAMPLER_1D_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_CUBE_MAP_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE:
case GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_BUFFER:
case GL_UNSIGNED_INT_SAMPLER_2D_RECT:
case GL_IMAGE_1D:
case GL_IMAGE_2D:
case GL_IMAGE_3D:
case GL_IMAGE_2D_RECT:
case GL_IMAGE_CUBE:
case GL_IMAGE_BUFFER:
case GL_IMAGE_1D_ARRAY:
case GL_IMAGE_2D_ARRAY:
case GL_IMAGE_CUBE_MAP_ARRAY:
case GL_IMAGE_2D_MULTISAMPLE:
case GL_IMAGE_2D_MULTISAMPLE_ARRAY:
case GL_INT_IMAGE_1D:
case GL_INT_IMAGE_2D:
case GL_INT_IMAGE_3D:
case GL_INT_IMAGE_2D_RECT:
case GL_INT_IMAGE_CUBE:
case GL_INT_IMAGE_BUFFER:
case GL_INT_IMAGE_1D_ARRAY:
case GL_INT_IMAGE_2D_ARRAY:
case GL_INT_IMAGE_CUBE_MAP_ARRAY:
case GL_INT_IMAGE_2D_MULTISAMPLE:
case GL_INT_IMAGE_2D_MULTISAMPLE_ARRAY:
case GL_UNSIGNED_INT_IMAGE_1D:
case GL_UNSIGNED_INT_IMAGE_2D:
case GL_UNSIGNED_INT_IMAGE_3D:
case GL_UNSIGNED_INT_IMAGE_2D_RECT:
case GL_UNSIGNED_INT_IMAGE_CUBE:
case GL_UNSIGNED_INT_IMAGE_BUFFER:
case GL_UNSIGNED_INT_IMAGE_1D_ARRAY:
case GL_UNSIGNED_INT_IMAGE_2D_ARRAY:
case GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY:
case GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE:
case GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE_ARRAY:
elemType = GL_INT;
break;
default:
os::log("apitrace: warning: %s: unknown GLenum 0x%04X\n", __FUNCTION__, type);
elemType = GL_NONE;
numCols = 0;
numRows = 0;
return;
}
}
static inline size_t
_glArrayPointer_size(GLint size, GLenum type, GLsizei stride, GLsizei count)
{
if (!count) {
return 0;
}
if (size == GL_BGRA) {
size = 4;
}
if (size > 4) {
os::log("apitrace: warning: %s: unexpected size 0x%04X\n", __FUNCTION__, size);
}
size_t elementSize = _gl_type_size(type, size);
if (!stride) {
stride = (GLsizei)elementSize;
}
return stride*(count - 1) + elementSize;
}
#define _glVertexPointer_size(size, type, stride, count) _glArrayPointer_size(size, type, stride, count)
#define _glNormalPointer_size(type, stride, count) _glArrayPointer_size(3, type, stride, count)
#define _glColorPointer_size(size, type, stride, count) _glArrayPointer_size(size, type, stride, count)
#define _glIndexPointer_size(type, stride, count) _glArrayPointer_size(1, type, stride, count)
#define _glTexCoordPointer_size(size, type, stride, count) _glArrayPointer_size(size, type, stride, count)
#define _glEdgeFlagPointer_size(stride, count) _glArrayPointer_size(1, GL_BOOL, stride, count)
#define _glFogCoordPointer_size(type, stride, count) _glArrayPointer_size(1, type, stride, count)
#define _glSecondaryColorPointer_size(size, type, stride, count) _glArrayPointer_size(size, type, stride, count)
#define _glVertexAttribPointer_size(size, type, normalized, stride, count) _glArrayPointer_size(size, type, stride, count)
#define _glVertexAttribPointerARB_size(size, type, normalized, stride, count) _glArrayPointer_size(size, type, stride, count)
#define _glVertexAttribPointerNV_size(size, type, stride, count) _glArrayPointer_size(size, type, stride, count)
/**
* Same as glGetIntegerv, but passing the result in the return value.
*/
static inline GLint
_glGetInteger(GLenum pname) {
GLint param = 0;
_glGetIntegerv(pname, ¶m);
return param;
}
static inline GLint
_element_array_buffer_binding(void) {
return _glGetInteger(GL_ELEMENT_ARRAY_BUFFER_BINDING);
}
/**
* Same as glGetVertexAttribiv, but passing the result in the return value.
*/
static inline GLint
_glGetVertexAttribi(GLuint index, GLenum pname) {
GLint param = 0;
_glGetVertexAttribiv(index, pname, ¶m);
return param;
}
static inline size_t
_glCallLists_size(GLsizei n, GLenum type)
{
return n*_gl_type_size(type);
}
static inline size_t
_glMap1d_size(GLenum target, GLint stride, GLint order)
{
if (order < 1) {
return 0;
}
GLint channels;
switch (target) {
case GL_MAP1_INDEX:
case GL_MAP1_TEXTURE_COORD_1:
channels = 1;
break;
case GL_MAP1_TEXTURE_COORD_2:
channels = 2;
break;
case GL_MAP1_NORMAL:
case GL_MAP1_TEXTURE_COORD_3:
case GL_MAP1_VERTEX_3:
channels = 3;
break;
case GL_MAP1_COLOR_4:
case GL_MAP1_TEXTURE_COORD_4:
case GL_MAP1_VERTEX_4:
channels = 4;
break;
default:
os::log("apitrace: warning: %s: unknown GLenum 0x%04X\n", __FUNCTION__, target);
return 0;
}
if (stride < channels) {
return 0;
}
return channels + stride * (order - 1);
}
#define _glMap1f_size _glMap1d_size
static inline size_t
_glMap2d_size(GLenum target, GLint ustride, GLint uorder, GLint vstride, GLint vorder)
{
if (uorder < 1 || vorder < 1) {
return 0;
}
GLint channels;
switch (target) {
case GL_MAP2_INDEX:
case GL_MAP2_TEXTURE_COORD_1:
channels = 1;
break;
case GL_MAP2_TEXTURE_COORD_2:
channels = 2;
break;
case GL_MAP2_NORMAL:
case GL_MAP2_TEXTURE_COORD_3:
case GL_MAP2_VERTEX_3:
channels = 3;
break;
case GL_MAP2_COLOR_4:
case GL_MAP2_TEXTURE_COORD_4:
case GL_MAP2_VERTEX_4:
channels = 4;
break;
default:
os::log("apitrace: warning: %s: unknown GLenum 0x%04X\n", __FUNCTION__, target);
return 0;
}
if (ustride < channels || vstride < channels) {
return 0;
}
return channels +
ustride * (uorder - 1) +
vstride * (vorder - 1);
}
#define _glMap2f_size _glMap2d_size
/**
* Number of channels in this format.
*
* That is, the number of elements per pixel when this format is passed with a
* to DrawPixels, ReadPixels, TexImage*, TexSubImage*, GetTexImage, etc.
*/
static inline unsigned
_gl_format_channels(GLenum format) {
switch (format) {
case GL_COLOR_INDEX:
case GL_RED:
case GL_RED_INTEGER:
case GL_GREEN:
case GL_GREEN_INTEGER:
case GL_BLUE:
case GL_BLUE_INTEGER:
case GL_ALPHA:
case GL_ALPHA_INTEGER:
case GL_INTENSITY:
case GL_LUMINANCE:
case GL_LUMINANCE_INTEGER_EXT:
case GL_DEPTH_COMPONENT:
case GL_STENCIL_INDEX:
return 1;
case GL_DEPTH_STENCIL:
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE_ALPHA_INTEGER_EXT:
case GL_RG:
case GL_RG_INTEGER:
case GL_422_EXT: // (luminance, chrominance)
case GL_422_REV_EXT: // (luminance, chrominance)
case GL_422_AVERAGE_EXT: // (luminance, chrominance)
case GL_422_REV_AVERAGE_EXT: // (luminance, chrominance)
case GL_HILO_NV: // (hi, lo)
case GL_DSDT_NV: // (ds, dt)
case GL_YCBCR_422_APPLE: // (luminance, chroma)
case GL_RGB_422_APPLE: // (G, B) on even pixels, (G, R) on odd pixels
case GL_YCRCB_422_SGIX: // (Y, [Cb,Cr])
return 2;
case GL_RGB:
case GL_RGB_INTEGER:
case GL_BGR:
case GL_BGR_INTEGER:
case GL_DSDT_MAG_NV: // (ds, dt, magnitude)
case GL_YCRCB_444_SGIX: // (Cb, Y, Cr)
return 3;
case GL_RGBA:
case GL_RGBA_INTEGER:
case GL_BGRA:
case GL_BGRA_INTEGER:
case GL_ABGR_EXT:
case GL_CMYK_EXT:
case GL_DSDT_MAG_VIB_NV: // (ds, dt, magnitude, vibrance)
return 4;
case GL_CMYKA_EXT:
return 5;
case GL_FORMAT_SUBSAMPLE_24_24_OML:
case GL_FORMAT_SUBSAMPLE_244_244_OML:
// requires UNSIGNED_INT_10_10_10_2, so this value will be ignored
return 0;
default:
os::log("apitrace: warning: %s: unexpected format GLenum 0x%04X\n", __FUNCTION__, format);
return 0;
}
}
template<class X>
static inline bool
_is_pot(X x) {
return (x & (x - 1)) == 0;
}
template<class X, class Y>
static inline X
_align(X x, Y y) {
return (x + (y - 1)) & ~(y - 1);
}
static inline unsigned
_gl_format_size(GLenum format, GLenum type)
{
unsigned num_elements = _gl_format_channels(format);
switch (type) {
case GL_BITMAP:
return 1;
case GL_BYTE:
case GL_UNSIGNED_BYTE:
return 8 * num_elements;
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_HALF_FLOAT:
return 16 * num_elements;
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
return 32 * num_elements;
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
return 8;
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_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
case GL_UNSIGNED_SHORT_8_8_MESA:
case GL_UNSIGNED_SHORT_8_8_REV_MESA:
return 16;
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:
case GL_UNSIGNED_INT_10F_11F_11F_REV:
case GL_UNSIGNED_INT_5_9_9_9_REV:
case GL_UNSIGNED_INT_S8_S8_8_8_NV:
case GL_UNSIGNED_INT_8_8_S8_S8_REV_NV:
return 32;
case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
assert(num_elements == 2);
return 32 * 2;
default:
os::log("apitrace: warning: %s: unexpected type GLenum 0x%04X\n", __FUNCTION__, type);
return 0;
}
}
static inline size_t
_glClearBufferData_size(GLenum format, GLenum type)
{
unsigned bits_per_pixel = _gl_format_size(format, type);
return (bits_per_pixel + 7)/8;
}
static inline size_t
_gl_image_size(GLenum format, GLenum type, GLsizei width, GLsizei height, GLsizei depth, GLboolean has_unpack_subimage)
{
unsigned bits_per_pixel = _gl_format_size(format, type);
GLint alignment = 4;
GLint row_length = 0;
GLint image_height = 0;
GLint skip_rows = 0;
GLint skip_pixels = 0;
GLint skip_images = 0;
_glGetIntegerv(GL_UNPACK_ALIGNMENT, &alignment);
if (has_unpack_subimage) {
_glGetIntegerv(GL_UNPACK_ROW_LENGTH, &row_length);
_glGetIntegerv(GL_UNPACK_IMAGE_HEIGHT, &image_height);
_glGetIntegerv(GL_UNPACK_SKIP_ROWS, &skip_rows);
_glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &skip_pixels);
_glGetIntegerv(GL_UNPACK_SKIP_IMAGES, &skip_images);
}
if (row_length <= 0) {
row_length = width;
}
size_t row_stride = (row_length*bits_per_pixel + 7)/8;
/*
* The OpenGL specification states that the unpack alignment should be
* ignored if the number of bits per element is not 1, 2, 4, or 8 times the
* number of bits in a GL ubyte, but the matter of fact is that the number
* of bits per element is always one of those.
*/
if (_is_pot(alignment)) {
row_stride = _align(row_stride, alignment);
}
if (image_height <= 0) {
image_height = height;
}
size_t image_stride = image_height*row_stride;
/*
* We can't just do
*
* size = depth*image_stride
*
* here as that could result in reading beyond the end of the buffer when
* selecting sub-rectangles via GL_UNPACK_SKIP_*.
*/
size_t size = (width*bits_per_pixel + 7)/8;
if (height > 1) {
size += (height - 1)*row_stride;
}
if (depth > 1) {
size += (depth - 1)*image_stride;
}
/* XXX: GL_UNPACK_IMAGE_HEIGHT and GL_UNPACK_SKIP_IMAGES should probably
* not be considered for pixel rectangles. */
size += (skip_pixels*bits_per_pixel + 7)/8;
size += skip_rows*row_stride;
size += skip_images*image_stride;
return size;
}
// note that can_unpack_subimage() is generated by gltrace.py
#define _glTexImage3D_size(format, type, width, height, depth) _gl_image_size(format, type, width, height, depth, can_unpack_subimage())
#define _glTexImage2D_size(format, type, width, height) _gl_image_size(format, type, width, height, 1, can_unpack_subimage())
#define _glTexImage1D_size(format, type, width) _gl_image_size(format, type, width, 1, 1, can_unpack_subimage())
#define _glDrawPixels_size(format, type, width, height) _glTexImage2D_size(format, type, width, height)
#define _glConvolutionFilter1D_size(format, type, width) _glTexImage1D_size(format, type, width)
#define _glConvolutionFilter2D_size(format, type, width, height) _glTexImage2D_size(format, type, width, height)
#define _glColorTable_size(format, type, width) _glTexImage1D_size(format, type, width)
#define _glColorSubTable_size(format, type, count) _glColorTable_size(format, type, count)
#define _glBitmap_size(width, height) _glTexImage2D_size(GL_COLOR_INDEX, GL_BITMAP, width, height)
#define _glPolygonStipple_size() _glBitmap_size(32, 32)
static inline size_t
_glClearBuffer_size(GLenum buffer)
{
switch (buffer) {
case GL_COLOR:
case GL_FRONT:
case GL_BACK:
case GL_LEFT:
case GL_RIGHT:
case GL_FRONT_AND_BACK:
return 4;
case GL_DEPTH:
case GL_STENCIL:
return 1;
default:
os::log("apitrace: warning: %s: unexpected buffer GLenum 0x%04X\n", __FUNCTION__, buffer);
return 0;
}
}
static inline size_t
_glPath_coords_size(GLsizei numCoords, GLenum coordType)
{
switch (coordType) {
case GL_BYTE:
return numCoords * sizeof(GLbyte);
case GL_UNSIGNED_BYTE:
return numCoords * sizeof(GLubyte);
case GL_SHORT:
return numCoords * sizeof(GLshort);
case GL_UNSIGNED_SHORT:
return numCoords * sizeof(GLushort);
case GL_FLOAT:
return numCoords * sizeof(GLfloat);
default:
return 0;
}
}
static inline size_t
_glPath_fontName_size(GLenum fontTarget, const void *fontName)
{
switch (fontTarget) {
case GL_STANDARD_FONT_NAME_NV:
case GL_SYSTEM_FONT_NAME_NV:
case GL_FILE_NAME_NV:
{
// Include +1 to copy nul terminator.
GLsizei size = GLsizei(strlen(reinterpret_cast<const char*>(fontName))+1);
return size;
}
default:
return 0;
}
}
static inline size_t
_glPath_chardcodes_size(GLsizei numGlyphs, GLenum type)
{
GLsizei bytes_per_glyph;
switch (type) {
case GL_FLOAT:
case GL_INT:
bytes_per_glyph = 4;
break;
case GL_BYTE:
bytes_per_glyph = 1;
break;
case GL_SHORT:
bytes_per_glyph = 2;
break;
default:
return 0;
}
return bytes_per_glyph*numGlyphs;
}
static GLsizei floatPerTransformList(GLenum transformType)
{
switch (transformType) {
case GL_NONE:
return 0;
case GL_TRANSLATE_X_NV:
case GL_TRANSLATE_Y_NV:
return 1;
case GL_TRANSLATE_2D_NV:
return 2;
case GL_TRANSLATE_3D_NV:
return 3;
case GL_AFFINE_2D_NV:
case GL_TRANSPOSE_AFFINE_2D_NV:
return 6;
case GL_PROJECTIVE_2D_NV:
case GL_TRANSPOSE_PROJECTIVE_2D_NV:
return 9;
case GL_AFFINE_3D_NV:
case GL_TRANSPOSE_AFFINE_3D_NV:
return 12;
case GL_PROJECTIVE_3D_NV:
case GL_TRANSPOSE_PROJECTIVE_3D_NV:
return 16;
default:
return 0;
}
}
static inline size_t
_gl_transformType_size(GLenum transformType)
{
return floatPerTransformList(transformType)*sizeof(GLfloat);
}
static inline size_t
_gl_transformType_size(GLsizei numPaths, GLenum transformType)
{
return numPaths*floatPerTransformList(transformType)*sizeof(GLfloat);
}
static size_t valuesPerPathParameter(GLenum pname)
{
switch (pname) {
case GL_PATH_FILL_MODE_NV:
case GL_PATH_FILL_MASK_NV:
case GL_PATH_FILL_COVER_MODE_NV:
case GL_PATH_STROKE_WIDTH_NV:
case GL_PATH_INITIAL_END_CAP_NV:
case GL_PATH_TERMINAL_END_CAP_NV:
case GL_PATH_JOIN_STYLE_NV:
case GL_PATH_MITER_LIMIT_NV:
case GL_PATH_INITIAL_DASH_CAP_NV:
case GL_PATH_TERMINAL_DASH_CAP_NV:
case GL_PATH_DASH_OFFSET_NV:
case GL_PATH_DASH_OFFSET_RESET_NV:
case GL_PATH_CLIENT_LENGTH_NV:
case GL_PATH_STROKE_COVER_MODE_NV:
case GL_PATH_STROKE_MASK_NV:
case GL_PATH_STROKE_OVERSAMPLE_COUNT_NV:
case GL_PATH_SAMPLE_QUALITY_NV:
case GL_PATH_END_CAPS_NV: // not valid for glGetPathParameter
case GL_PATH_DASH_CAPS_NV: // not valid for glGetPathParameter
return 1;
default:
return 0;
}
}
static inline size_t
_gl_PathParameter_size(GLenum pname)
{
return valuesPerPathParameter(pname);
}
// See RFC-3629 "UTF-8, a transformation format of ISO 10646"
// http://www.rfc-editor.org/rfc/rfc3629.txt
// http://rfc-ref.org/RFC-TEXTS/3629/index.html
static bool
__glPathGetCodePointUTF8(const void *&utf_string,
GLuint &code_point)
{
const GLubyte *p = reinterpret_cast<const GLubyte*>(utf_string);
GLubyte c0 = p[0];
if ((c0 & 0x80) == 0x00) {
// Zero continuation (0 to 127)
code_point = c0;
assert(code_point <= 127);
p += 1;
} else {
GLubyte c1 = p[1];
if ((c1 & 0xC0) != 0x80) {
// Stop processing the UTF byte sequence early.
return false;
}
if ((c0 & 0xE0) == 0xC0) {
// One contination (128 to 2047)
code_point = ((c0 & 0x1F) << 6) | (c1 & 0x3F);
if (code_point < 128) {
return false;
}
assert(code_point >= 128 && code_point <= 2047);
p += 2;
} else {
GLubyte c2 = p[2];
if ((c2 & 0xC0) != 0x80) {
// Stop processing the UTF byte sequence early.
return false;
}
if ((c0 & 0xF0) == 0xE0) {
// Two continuation (2048 to 55295 and 57344 to 65535)
code_point = ((c0 & 0x0F) << 12) |
((c1 & 0x3F) << 6) |
(c2 & 0x3F);
// "The definition of UTF-8 prohibits encoding character numbers between
// U+D800 and U+DFFF, which are reserved for use with the UTF-16
// encoding form (as surrogate pairs) and do not directly represent
// characters."
// 0xD800 = 55,296
// 0xDFFF = 57,343
if ((code_point >= 55296) && (code_point <= 57343)) {
// Stop processing the UTF byte sequence early.
return false;
}
if (code_point < 2048) {
return false;
}
assert(code_point >= 2048 && code_point <= 65535);
assert(code_point < 55296 || code_point > 57343);
p += 3;
} else {
GLubyte c3 = p[3];
if ((c3 & 0xC0) != 0x80) {
// Stop processing the UTF byte sequence early.
return false;
}
if ((c0 & 0xF8) == 0xF0) {
// Three continuation (65536 to 1114111)
code_point = ((c0 & 0x07) << 18) |
((c1 & 0x3F) << 12) |
((c2 & 0x3F) << 6) |
(c3 & 0x3F);
if (code_point < 65536 || code_point > 1114111) {
return false;
}
assert(code_point >= 65536 && code_point <= 1114111);
p += 4;
} else {
// Skip invalid or restricted encodings.
// Stop processing the UTF byte sequence early.
return false;
}
}
}
}
utf_string = p;
return true;
}
// See RFC-2781 "UTF-16, a transformation format of ISO 10646"
// http://rfc-ref.org/RFC-TEXTS/2781/index.html
// http://www.rfc-editor.org/rfc/rfc2781.txt
static bool
__glPathGetCodePointUTF16(const void *&utf_string,
GLuint &code_point)
{
// Section 2.2 (Decoding UTF-16) of http://www.rfc-editor.org/rfc/rfc2781.txt
// "Decoding of a single character from UTF-16 to an ISO 10646 character
// value proceeds as follows."
const GLushort *p = reinterpret_cast<const GLushort*>(utf_string);
// "Let W1 be the next 16-bit integer in the
// sequence of integers representing the text."
GLushort W1 = p[0];
// "1) If W1 < 0xD800 or W1 > 0xDFFF, the character value U is the value
// of W1. Terminate."
if ((W1 < 0xDB00) || (W1 > 0xDFFF)) {
code_point = W1;
p += 1;
} else {
// "2) Determine if W1 is between 0xD800 and 0xDBFF."
bool between1 = (W1 >= 0xDB00) && (W1 <= 0xDBFF);