#!/bin/sh
#
# Copyright © 2009 Intel Corporation
#
# 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS 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.

# gen_integral_type <name> <base_type> <vector elements> <matrix rows>
function gen_integral_type
{
    printf '   glsl_type( %17s, %u, %u, "%s"),\n' $2 $3 $4 $1
    index=$((index + 1))
}

# gen_struct_type <name>
function gen_struct_type
{
    elements=$(printf "%s_fields" $1)
    printf '   glsl_type(%s,\n             Elements(%s),\n             "%s"),\n' \
	$elements $elements $1
}

# gen_sampler_type <name> <dimensions> <shadow> <array> <type>
function gen_sampler_type
{
    name=$(printf "sampler%s" $1)

    if [ $4 -eq 1 ]; then
	name=$(printf "%sArray" $name)
    fi

    if [ $3 -eq 1 ]; then
	name=$(printf "%sShadow" $name)
    fi

    if [ $5 == GLSL_TYPE_INT ]; then
	name=$(printf "i%s" $name)
    elif [ $5 == GLSL_TYPE_UINT ]; then
	name=$(printf "u%s" $name)
    fi

    printf '   glsl_type(%21s, %u, %u, %15s, "%s"),\n' \
	$2 $3 $4 $5 $name
}

function gen_header
{
    if [ x$1 == x ]; then
	name="builtin_types"
    else
	name="builtin_${1}_types"
    fi

    printf "\nstatic const struct glsl_type %s[] = {\n" $name
}

function gen_footer
{
    printf "};\n"
}

function gen_struct_field_header
{
    printf "\nstatic const struct glsl_struct_field %s_fields[] = {\n" $1
}

function gen_struct_field_footer
{
    printf "};\n"
}

function gen_struct_field
{
    printf '   { & %s[%2u], "%s" },\n' $1 $2 "$3"
}

cat <<EOF
/* THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT! See builtin_types.sh. */
/*
 * Copyright © 2009 Intel Corporation
 *
 * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS 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.
 */

#ifndef Elements
#define Elements(x) (sizeof(x)/sizeof(*(x)))
#endif

static const struct glsl_type error_type =
   glsl_type(GLSL_TYPE_ERROR, 0, 0, "");

static const struct glsl_type void_type =
   glsl_type(GLSL_TYPE_VOID, 0, 0, "void");

const struct glsl_type *const glsl_error_type = & error_type;

EOF

echo '/** \name Core built-in types'
echo ' *'
echo ' * These types exist in all versions of GLSL.'
echo ' */'
echo '/*@{*/'
gen_header "core"

index=0;
bool_index=$index
gen_integral_type "bool" "GLSL_TYPE_BOOL" 0 0
for i in 2 3 4; do
    gen_integral_type "bvec$i" "GLSL_TYPE_BOOL" $i 0
done

int_index=$index
gen_integral_type "int" "GLSL_TYPE_INT" 0 0
for i in 2 3 4; do
    gen_integral_type "ivec$i" "GLSL_TYPE_INT" $i 0
done

float_index=$index
gen_integral_type "float" "GLSL_TYPE_FLOAT" 0 0
for i in 2 3 4; do
    gen_integral_type "vec$i" "GLSL_TYPE_FLOAT" $i 0
done

matX_index=$index
for i in 2 3 4; do
    gen_integral_type "mat$i" "GLSL_TYPE_FLOAT" $i $i
done

for i in "1D" "2D"; do
    gen_sampler_type $i "GLSL_SAMPLER_DIM_$i" 0 0 "GLSL_TYPE_FLOAT"
    gen_sampler_type $i "GLSL_SAMPLER_DIM_$i" 1 0 "GLSL_TYPE_FLOAT"
done

gen_sampler_type "3D"     "GLSL_SAMPLER_DIM_3D"   0 0 "GLSL_TYPE_FLOAT"
gen_sampler_type "Cube"   "GLSL_SAMPLER_DIM_CUBE" 0 0 "GLSL_TYPE_FLOAT"
gen_sampler_type "2DRect" "GLSL_SAMPLER_DIM_RECT" 0 0 "GLSL_TYPE_FLOAT"
gen_sampler_type "2DRect" "GLSL_SAMPLER_DIM_RECT" 1 0 "GLSL_TYPE_FLOAT"

gen_footer

echo
echo 'const struct glsl_type *const glsl_bool_type  = & builtin_core_types['$bool_index'];'
echo 'const struct glsl_type *const glsl_int_type   = & builtin_core_types['$int_index'];'
echo 'const struct glsl_type *const glsl_float_type = & builtin_core_types['$float_index'];'
echo 'const glsl_type *const glsl_type::mat2_type = & builtin_core_types['$(($matX_index + 0))'];'
echo 'const glsl_type *const glsl_type::mat3_type = & builtin_core_types['$(($matX_index + 1))'];'
echo 'const glsl_type *const glsl_type::mat4_type = & builtin_core_types['$(($matX_index + 2))'];'
echo '/*@}*/'

echo
echo '/** \name GLSL structures that have not been deprecated.'
echo ' */'
echo '/*@{*/'
gen_struct_field_header gl_DepthRangeParameters
gen_struct_field builtin_core_types 8 "near"
gen_struct_field builtin_core_types 8 "far"
gen_struct_field builtin_core_types 8 "diff"
gen_struct_field_footer

gen_header "structure"
gen_struct_type gl_DepthRangeParameters
gen_footer
echo '/*@}*/'

echo
echo '/** \name GLSL 1.00 / 1.10 structures that are deprecated in GLSL 1.30'
echo ' */'
echo '/*@{*/'
gen_struct_field_header gl_PointParameters
gen_struct_field builtin_core_types 8 "size"
gen_struct_field builtin_core_types 8 "sizeMin"
gen_struct_field builtin_core_types 8 "sizeMax"
gen_struct_field builtin_core_types 8 "fadeThresholdSize"
gen_struct_field builtin_core_types 8 "distanceConstantAttenuation"
gen_struct_field builtin_core_types 8 "distanceLinearAttenuation"
gen_struct_field builtin_core_types 8 "distanceQuadraticAttenuation"
gen_struct_field_footer

gen_struct_field_header gl_MaterialParameters
gen_struct_field builtin_core_types 11 "emission"
gen_struct_field builtin_core_types 11 "ambient"
gen_struct_field builtin_core_types 11 "diffuse"
gen_struct_field builtin_core_types 11 "specular"
gen_struct_field builtin_core_types 8  "shininess"
gen_struct_field_footer

gen_struct_field_header gl_LightSourceParameters
gen_struct_field builtin_core_types 11 "ambient"
gen_struct_field builtin_core_types 11 "diffuse"
gen_struct_field builtin_core_types 11 "specular"
gen_struct_field builtin_core_types 11 "position"
gen_struct_field builtin_core_types 11 "halfVector"
gen_struct_field builtin_core_types 10 "spotDirection"
gen_struct_field builtin_core_types 8  "spotExponent"
gen_struct_field builtin_core_types 8  "spotCutoff"
gen_struct_field builtin_core_types 8  "spotCosCutoff"
gen_struct_field builtin_core_types 8  "constantAttenuation"
gen_struct_field builtin_core_types 8  "linearAttenuation"
gen_struct_field builtin_core_types 8  "quadraticAttenuation"
gen_struct_field_footer

gen_struct_field_header gl_LightModelParameters
gen_struct_field builtin_core_types 11 "ambient"
gen_struct_field_footer

gen_struct_field_header gl_LightModelProducts
gen_struct_field builtin_core_types 11 "sceneColor"
gen_struct_field_footer

gen_struct_field_header gl_LightProducts
gen_struct_field builtin_core_types 11 "ambient"
gen_struct_field builtin_core_types 11 "diffuse"
gen_struct_field builtin_core_types 11 "specular"
gen_struct_field_footer

gen_struct_field_header gl_FogParameters
gen_struct_field builtin_core_types 11 "color"
gen_struct_field builtin_core_types 8  "density"
gen_struct_field builtin_core_types 8  "start"
gen_struct_field builtin_core_types 8  "end"
gen_struct_field builtin_core_types 8  "scale"
gen_struct_field_footer

gen_header "110_deprecated_structure"
gen_struct_type gl_PointParameters
gen_struct_type gl_MaterialParameters
gen_struct_type gl_LightSourceParameters
gen_struct_type gl_LightModelParameters
gen_struct_type gl_LightModelProducts
gen_struct_type gl_LightProducts
gen_struct_type gl_FogParameters
gen_footer
echo '/*@}*/'


echo
echo '/** \name Types added in GLSL 1.20'
echo ' */'
echo '/*@{*/'
gen_header "120"
for c in 2 3 4; do
    for r in 2 3 4; do
	if [ $c -ne $r ]; then
	    gen_integral_type "mat${c}x${r}" "GLSL_TYPE_FLOAT" $r $c
	fi
    done
done
gen_footer

echo 'const glsl_type *const glsl_type::mat2x3_type = & builtin_120_types[0];'
echo 'const glsl_type *const glsl_type::mat2x4_type = & builtin_120_types[1];'
echo 'const glsl_type *const glsl_type::mat3x2_type = & builtin_120_types[2];'
echo 'const glsl_type *const glsl_type::mat3x4_type = & builtin_120_types[3];'
echo 'const glsl_type *const glsl_type::mat4x2_type = & builtin_120_types[4];'
echo 'const glsl_type *const glsl_type::mat4x3_type = & builtin_120_types[5];'
echo '/*@}*/'
echo
echo '/** \name Types added in GLSL 1.30'
echo ' */'
echo '/*@{*/'
gen_header "130"
index=0;
uint_index=$index
gen_integral_type "uint" "GLSL_TYPE_UINT" 0 0
for i in 2 3 4; do
    gen_integral_type "uvec$i" "GLSL_TYPE_UINT" $i 0
done

echo
echo "   /* 1D and 2D texture arrays */"
for i in "1D" "2D"; do
    gen_sampler_type $i "GLSL_SAMPLER_DIM_$i" 0 1 "GLSL_TYPE_FLOAT"
    gen_sampler_type $i "GLSL_SAMPLER_DIM_$i" 0 1 "GLSL_TYPE_INT"
    gen_sampler_type $i "GLSL_SAMPLER_DIM_$i" 0 1 "GLSL_TYPE_UINT"
    gen_sampler_type $i "GLSL_SAMPLER_DIM_$i" 1 1 "GLSL_TYPE_FLOAT"
done

echo
echo "   /* cube shadow samplers */"
gen_sampler_type "Cube"   "GLSL_SAMPLER_DIM_CUBE" 1 0 "GLSL_TYPE_FLOAT"

echo
echo "   /* signed and unsigned integer samplers */"
for i in "1D" "2D" "3D"; do
    gen_sampler_type $i "GLSL_SAMPLER_DIM_$i" 0 0 "GLSL_TYPE_INT"
    gen_sampler_type $i "GLSL_SAMPLER_DIM_$i" 0 0 "GLSL_TYPE_UINT"
done

gen_sampler_type "Cube"   "GLSL_SAMPLER_DIM_CUBE" 0 0 "GLSL_TYPE_INT"
gen_sampler_type "Cube"   "GLSL_SAMPLER_DIM_CUBE" 0 0 "GLSL_TYPE_UINT"

gen_footer
echo ''
echo 'const struct glsl_type *const glsl_uint_type   = & builtin_130_types['$uint_index'];'
echo '/*@}*/'

echo
echo '/** \name Sampler types added by GL_EXT_texture_buffer_object'
echo ' */'
echo '/*@{*/'
gen_header "EXT_texture_buffer_object"
gen_sampler_type "Buffer" "GLSL_SAMPLER_DIM_BUF" 0 0 "GLSL_TYPE_FLOAT"
gen_sampler_type "Buffer" "GLSL_SAMPLER_DIM_BUF" 0 0 "GLSL_TYPE_INT"
gen_sampler_type "Buffer" "GLSL_SAMPLER_DIM_BUF" 0 0 "GLSL_TYPE_UINT"
gen_footer
echo '/*@}*/'