#!/bin/bash

##

## Copyright (C) 2002-2008, Marcelo E. Magallon <mmagallo[]debian org=""></mmagallo[]debian>

## Copyright (C) 2002-2008, Milan Ikits <milan ikits[]ieee="" org=""></milan>

##

## This program is distributed under the terms and conditions of the GNU

## General Public License Version 2 as published by the Free Software

## Foundation or, at your option, any later version.

##

## Parameters:

##

##       $1: Extensions directory

##       $2: Registry directory

##       $3: The black list

set -e

if [ ! -d $1 ] ; then

    mkdir $1

# Parse each of the extensions in the registry

    find $2 -name doc -type d -prune -o -name \*.txt -print | \

	grep -v -f $3 | sort | bin/parse_spec.pl $1

# fix GL_NV_texture_compression_vtc

    grep -v EXT $1/GL_NV_texture_compression_vtc > tmp

    mv tmp $1/GL_NV_texture_compression_vtc

# remove duplicates from GL_ARB_vertex_program and GL_ARB_fragment_program

    grep -v -F -f $1/GL_ARB_vertex_program $1/GL_ARB_fragment_program > tmp

    mv tmp $1/GL_ARB_fragment_program

# remove duplicates from GLX_EXT_visual_rating and GLX_EXT_visual_info

    grep -v -F -f $1/GLX_EXT_visual_info $1/GLX_EXT_visual_rating > tmp

    mv tmp $1/GLX_EXT_visual_rating

# GL_EXT_draw_buffers2 and GL_EXT_transform_feedback both define glGetBooleanIndexedvEXT but with different parameter names

    grep -v glGetBooleanIndexedvEXT $1/GL_EXT_transform_feedback > tmp

    mv tmp $1/GL_EXT_transform_feedback    

# GL_EXT_draw_buffers2 and GL_EXT_transform_feedback both define glGetIntegerIndexedvEXT but with different parameter names

    grep -v glGetIntegerIndexedvEXT $1/GL_EXT_transform_feedback > tmp

    mv tmp $1/GL_EXT_transform_feedback    

# remove duplicates from GL_NV_video_capture and GLX_NV_video_capture

    grep -v glX $1/GL_NV_video_capture > tmp

    mv tmp $1/GL_NV_video_capture

# add missing functions to GL_NV_video_capture

	cat >> $1/GL_NV_video_capture <

    void glGetVideoCaptureStreamivNV (GLuint video_capture_slot, GLuint stream, GLenum pname, GLint* params)

    void glGetVideoCaptureStreamfvNV (GLuint video_capture_slot, GLuint stream, GLenum pname, GLfloat* params)

    void glGetVideoCaptureStreamdvNV (GLuint video_capture_slot, GLuint stream, GLenum pname, GLdouble* params)

    void glVideoCaptureStreamParameterivNV (GLuint video_capture_slot, GLuint stream, GLenum pname, const GLint* params)

    void glVideoCaptureStreamParameterfvNV (GLuint video_capture_slot, GLuint stream, GLenum pname, const GLfloat* params)

    void glVideoCaptureStreamParameterdvNV (GLuint video_capture_slot, GLuint stream, GLenum pname, const GLdouble* params)

EOT

# fix WGL_NV_video_capture

    cat >> $1/WGL_NV_video_capture <

    DECLARE_HANDLE(HVIDEOINPUTDEVICENV);

EOT

# fix GLX_NV_video_capture

    cat >> $1/GLX_NV_video_capture <

    typedef XID GLXVideoCaptureDeviceNV

EOT

# remove duplicates from GL_NV_present_video and GLX_NV_present_video

    grep -v -F -f $1/GLX_NV_present_video $1/GL_NV_present_video > tmp

    mv tmp $1/GL_NV_present_video

# fix WGL_NV_present_video

    cat >> $1/WGL_NV_present_video <

    DECLARE_HANDLE(HVIDEOOUTPUTDEVICENV);

EOT

# fix WGL_NV_video_output

    cat >> $1/WGL_NV_video_output <

    DECLARE_HANDLE(HPVIDEODEV);

EOT

# fix GL_NV_occlusion_query and GL_HP_occlusion_test

    grep -v '_HP' $1/GL_NV_occlusion_query > tmp

    mv tmp $1/GL_NV_occlusion_query

    perl -e's/OCCLUSION_TEST_HP.*/OCCLUSION_TEST_HP 0x8165/' -pi \

	$1/GL_HP_occlusion_test

    perl -e's/OCCLUSION_TEST_RESULT_HP.*/OCCLUSION_TEST_RESULT_HP 0x8166/' -pi \

	$1/GL_HP_occlusion_test

# fix GLvoid in GL_ARB_vertex_buffer_objects

    perl -e 's/ void\*/ GLvoid\*/g' -pi \

        $1/GL_ARB_vertex_buffer_object

# add deprecated constants to GL_ATI_fragment_shader

    cat >> $1/GL_ATI_fragment_shader <

	GL_NUM_FRAGMENT_REGISTERS_ATI 0x896E

	GL_NUM_FRAGMENT_CONSTANTS_ATI 0x896F

	GL_NUM_PASSES_ATI 0x8970

	GL_NUM_INSTRUCTIONS_PER_PASS_ATI 0x8971

	GL_NUM_INSTRUCTIONS_TOTAL_ATI 0x8972

	GL_NUM_INPUT_INTERPOLATOR_COMPONENTS_ATI 0x8973

	GL_NUM_LOOPBACK_COMPONENTS_ATI 0x8974

	GL_COLOR_ALPHA_PAIRING_ATI 0x8975

	GL_SWIZZLE_STRQ_ATI 0x897A

	GL_SWIZZLE_STRQ_DQ_ATI 0x897B

EOT

# add deprecated constants to GL_NV_texture_shader

    cat >> $1/GL_NV_texture_shader <

	GL_OFFSET_TEXTURE_2D_MATRIX_NV 0x86E1

	GL_OFFSET_TEXTURE_2D_BIAS_NV 0x86E3

	GL_OFFSET_TEXTURE_2D_SCALE_NV 0x86E2

EOT

# fix WGL_ATI_pixel_format_float

    cat >> $1/WGL_ATI_pixel_format_float <

	GL_RGBA_FLOAT_MODE_ATI 0x8820

	GL_COLOR_CLEAR_UNCLAMPED_VALUE_ATI 0x8835

EOT

# fix WGL_ARB_make_current_read

    cat >> $1/WGL_ARB_make_current_read <

	ERROR_INVALID_PIXEL_TYPE_ARB 0x2043

	ERROR_INCOMPATIBLE_DEVICE_CONTEXTS_ARB 0x2054

EOT

# fix WGL_EXT_make_current_read

    cat >> $1/WGL_EXT_make_current_read <

	ERROR_INVALID_PIXEL_TYPE_EXT 0x2043

EOT

# add typedefs to GL_ARB_vertex_buffer_object; (from personal communication

# with Marco Fabbricatore).

#

# Rationale.  The spec says:

#

#   "Both types are defined as signed integers large enough to contain

#   any pointer value [...] The idea of making these types unsigned was

#   considered, but was ultimately rejected ..."

    cat >> $1/GL_ARB_vertex_buffer_object <

	typedef ptrdiff_t GLsizeiptrARB

	typedef ptrdiff_t GLintptrARB

EOT

# add typedefs to GLX_EXT_import_context

    cat >> $1/GLX_EXT_import_context <

	typedef XID GLXContextID

EOT

# add tokens to GLX_OML_swap_method

    cat >> $1/GLX_OML_swap_method <

	GLX_SWAP_EXCHANGE_OML 0x8061

	GLX_SWAP_COPY_OML 0x8062

	GLX_SWAP_UNDEFINED_OML 0x8063

EOT

# add typedefs to GLX_SGIX_fbconfig

    cat >> $1/GLX_SGIX_fbconfig <

	typedef XID GLXFBConfigIDSGIX

	typedef struct __GLXFBConfigRec *GLXFBConfigSGIX

EOT

# add typedefs to GLX_SGIX_pbuffer

    cat >> $1/GLX_SGIX_pbuffer <

	typedef XID GLXPbufferSGIX

	typedef struct { int type; unsigned long serial; Bool send_event; Display *display; GLXDrawable drawable; int event_type; int draw_type; unsigned int mask; int x, y; int width, height; int count; } GLXBufferClobberEventSGIX

EOT

# add typedef to GL_NV_half_float

    cat >> $1/GL_NV_half_float <

	typedef unsigned short GLhalf

EOT

# add handle to WGL_ARB_pbuffer

    cat >> $1/WGL_ARB_pbuffer <

	DECLARE_HANDLE(HPBUFFERARB);

EOT

# add handle to WGL_EXT_pbuffer

    cat >> $1/WGL_EXT_pbuffer <

	DECLARE_HANDLE(HPBUFFEREXT);

EOT

# get rid of GL_SUN_multi_draw_arrays

    rm -f $1/GL_SUN_multi_draw_arrays

# change variable names in GL_ARB_vertex_shader

    perl -e 's/v0/x/g' -pi $1/GL_ARB_vertex_shader

    perl -e 's/v1/y/g' -pi $1/GL_ARB_vertex_shader

    perl -e 's/v2/z/g' -pi $1/GL_ARB_vertex_shader

    perl -e 's/v3/w/g' -pi $1/GL_ARB_vertex_shader

# remove triplicates in GL_ARB_shader_objects, GL_ARB_fragment_shader, 

# and GL_ARB_vertex_shader

    grep -v -F -f $1/GL_ARB_shader_objects $1/GL_ARB_fragment_shader > tmp

    mv tmp $1/GL_ARB_fragment_shader

    grep -v -F -f $1/GL_ARB_shader_objects $1/GL_ARB_vertex_shader > tmp

    mv tmp $1/GL_ARB_vertex_shader

# remove duplicates in GL_ARB_vertex_program and GL_ARB_vertex_shader

    grep -v -F -f $1/GL_ARB_vertex_program $1/GL_ARB_vertex_shader > tmp

    mv tmp $1/GL_ARB_vertex_shader

# remove triplicates in GL_ARB_fragment_program, GL_ARB_fragment_shader,

# and GL_ARB_vertex_shader

    grep -v -F -f $1/GL_ARB_fragment_program $1/GL_ARB_fragment_shader > tmp

    mv tmp $1/GL_ARB_fragment_shader

    grep -v -F -f $1/GL_ARB_fragment_program $1/GL_ARB_vertex_shader > tmp

    mv tmp $1/GL_ARB_vertex_shader

# remove duplicates in GL_EXT_direct_state_access

    grep -v "glGetBooleanIndexedvEXT" $1/GL_EXT_direct_state_access > tmp

    mv tmp $1/GL_EXT_direct_state_access

    grep -v "glGetIntegerIndexedvEXT" $1/GL_EXT_direct_state_access > tmp

    mv tmp $1/GL_EXT_direct_state_access

    grep -v "glDisableIndexedEXT" $1/GL_EXT_direct_state_access > tmp

    mv tmp $1/GL_EXT_direct_state_access

    grep -v "glEnableIndexedEXT" $1/GL_EXT_direct_state_access > tmp

    mv tmp $1/GL_EXT_direct_state_access

    grep -v "glIsEnabledIndexedEXT" $1/GL_EXT_direct_state_access > tmp

    mv tmp $1/GL_EXT_direct_state_access

# remove duplicates in GL_NV_explicit_multisample

    grep -v "glGetBooleanIndexedvEXT" $1/GL_NV_explicit_multisample > tmp

    mv tmp $1/GL_NV_explicit_multisample

    grep -v "glGetIntegerIndexedvEXT" $1/GL_NV_explicit_multisample > tmp

    mv tmp $1/GL_NV_explicit_multisample

# fix bugs in GL_ARB_vertex_shader

    grep -v "GL_FLOAT" $1/GL_ARB_vertex_shader > tmp

    mv tmp $1/GL_ARB_vertex_shader

    perl -e 's/handle /GLhandleARB /g' -pi $1/GL_ARB_vertex_shader

# fix bugs in GL_ARB_shader_objects

    grep -v "GL_FLOAT " $1/GL_ARB_shader_objects > tmp

    mv tmp $1/GL_ARB_shader_objects

    grep -v "GL_INT " $1/GL_ARB_shader_objects > tmp

    mv tmp $1/GL_ARB_shader_objects

# add typedefs to GL_ARB_shader_objects

    cat >> $1/GL_ARB_shader_objects <

	typedef char GLcharARB

	typedef unsigned int GLhandleARB

EOT

# add missing functions to GL_ARB_transpose_matrix

	cat >> $1/GL_ARB_transpose_matrix <

	void glLoadTransposeMatrixfARB (GLfloat m[16])

	void glLoadTransposeMatrixdARB (GLdouble m[16])

	void glMultTransposeMatrixfARB (GLfloat m[16])

	void glMultTransposeMatrixdARB (GLdouble m[16])

EOT

# add missing tokens to GL_EXT_framebuffer_multisample

	cat >> $1/GL_EXT_framebuffer_multisample <

	GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT 0x8D56

	GL_MAX_SAMPLES_EXT 0x8D57

EOT

# Filter out GL_NV_gpu_program_fp64 enums and functions

    head -n3 $1/GL_NV_gpu_program_fp64 > tmp

    mv tmp $1/GL_NV_gpu_program_fp64

# Filter glGetUniformui64vNV from GL_NV_shader_buffer_load

    grep -v "glGetUniformui64vNV" $1/GL_NV_shader_buffer_load > tmp

    mv tmp $1/GL_NV_shader_buffer_load

# Filter out profile enumerations from GLX_ARB_create_context

    grep -v "_PROFILE_" $1/GLX_ARB_create_context > tmp

    mv tmp $1/GLX_ARB_create_context

# Filter only profile related enumerations for GLX_ARB_create_context_profile

    head -n3 $1/GLX_ARB_create_context_profile > tmp

    grep "_PROFILE_" $1/GLX_ARB_create_context_profile >> tmp

    mv tmp $1/GLX_ARB_create_context_profile

# Filter out profile enumerations from WGL_ARB_create_context

    grep -v "_PROFILE_" $1/WGL_ARB_create_context > tmp

    mv tmp $1/WGL_ARB_create_context

# Filter only profile related enumerations for WGL_ARB_create_context_profile

    head -n3 $1/WGL_ARB_create_context_profile > tmp

    grep "_PROFILE_" $1/WGL_ARB_create_context_profile >> tmp

    mv tmp $1/WGL_ARB_create_context_profile

# add missing function to GLX_NV_copy_image

	cat >> $1/GLX_NV_copy_image <

  void glXCopyImageSubDataNV (Display *dpy, GLXContext srcCtx, GLuint srcName, GLenum srcTarget, GLint srcLevel, GLint srcX, GLint srcY, GLint srcZ, GLXContext dstCtx, GLuint dstName, GLenum dstTarget, GLint dstLevel, GLint dstX, GLint dstY, GLint dstZ, GLsizei width, GLsizei height, GLsizei depth)

EOT

# add missing function to WGL_NV_copy_image

	cat >> $1/WGL_NV_copy_image <

  BOOL wglCopyImageSubDataNV (HGLRC hSrcRC, GLuint srcName, GLenum srcTarget, GLint srcLevel, GLint srcX, GLint srcY, GLint srcZ, HGLRC hDstRC, GLuint dstName, GLenum dstTarget, GLint dstLevel, GLint dstX, GLint dstY, GLint dstZ, GLsizei width, GLsizei height, GLsizei depth)

EOT

# Filter glProgramParameteri from GL_ARB_separate_shader_objects

#    grep -v "glProgramParameteri" $1/GL_ARB_separate_shader_objects > tmp

#    mv tmp $1/GL_ARB_separate_shader_objects

# Filter out EXT functions from GL_ARB_viewport_array

    grep -v "EXT" $1/GL_ARB_viewport_array > tmp

    mv tmp $1/GL_ARB_viewport_array

# Additional enumerations for GL_NV_vertex_buffer_unified_memory

# These are mentioned in GL_ARB_draw_indirect.txt

    cat >> $1/GL_NV_vertex_buffer_unified_memory <

	GL_DRAW_INDIRECT_UNIFIED_NV 0x8F40

	GL_DRAW_INDIRECT_ADDRESS_NV 0x8F41

	GL_DRAW_INDIRECT_LENGTH_NV  0x8F42

EOT

# Filter glGetPointerv from GL_ARB_debug_output

# It's part of OpenGL 1.1, after all

    grep -v "glGetPointerv" $1/GL_ARB_debug_output > tmp

    mv tmp $1/GL_ARB_debug_output

# Filter glGetPointerv from GL_EXT_vertex_array

# It's part of OpenGL 1.1, after all

    grep -v "glGetPointerv" $1/GL_EXT_vertex_array > tmp

    mv tmp $1/GL_EXT_vertex_array

# add typedef to GL_AMD_debug_output

# parse_spec.pl can't parse typedefs from New Types section, but ought to

    cat >> $1/GL_AMD_debug_output <

	typedef void (APIENTRY *GLDEBUGPROCAMD)(GLuint id, GLenum category, GLenum severity, GLsizei length, const GLchar* message, GLvoid* userParam)

EOT

# add typedef to GL_ARB_debug_output

# parse_spec.pl can't parse typedefs from New Types section, but ought to

    cat >> $1/GL_ARB_debug_output <

	typedef void (APIENTRY *GLDEBUGPROCARB)(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, GLvoid* userParam)

EOT

# add typedef to GL_KHR_debug

# parse_spec.pl can't parse typedefs from New Types section, but ought to

    cat >> $1/GL_KHR_debug <

	typedef void (APIENTRY *GLDEBUGPROC)(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, GLvoid* userParam)

EOT

# Remove GL_ARB_debug_group, GL_ARB_debug_label and GL_ARB_debug_output2, for now

    rm $1/GL_ARB_debug_group

    rm $1/GL_ARB_debug_label

    rm $1/GL_ARB_debug_output2

# add typedefs to GL_ARB_cl_event

# parse_spec.pl can't parse typedefs from New Types section, but ought to

    cat >> $1/GL_ARB_cl_event <

	typedef struct _cl_context *cl_context

	typedef struct _cl_event *cl_event

EOT

# Filter out EXT functions from GL_ARB_gpu_shader_fp64

    grep -v 'EXT ' $1/GL_ARB_gpu_shader_fp64 > tmp

    mv tmp $1/GL_ARB_gpu_shader_fp64

# add missing functions to GL_EXT_direct_state_access (GL_ARB_gpu_shader_fp64 related)

	cat >> $1/GL_EXT_direct_state_access <

    void glProgramUniform1dEXT (GLuint program, GLint location, GLdouble x)

    void glProgramUniform2dEXT (GLuint program, GLint location, GLdouble x, GLdouble y)

    void glProgramUniform3dEXT (GLuint program, GLint location, GLdouble x, GLdouble y, GLdouble z)

    void glProgramUniform4dEXT (GLuint program, GLint location, GLdouble x, GLdouble y, GLdouble z, GLdouble w)

    void glProgramUniform1dvEXT (GLuint program, GLint location, GLsizei count, const GLdouble *value)

    void glProgramUniform2dvEXT (GLuint program, GLint location, GLsizei count, const GLdouble *value)

    void glProgramUniform3dvEXT (GLuint program, GLint location, GLsizei count, const GLdouble *value)

    void glProgramUniform4dvEXT (GLuint program, GLint location, GLsizei count, const GLdouble *value)

    void glProgramUniformMatrix2dvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value)

    void glProgramUniformMatrix3dvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value)

    void glProgramUniformMatrix4dvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value)

    void glProgramUniformMatrix2x3dvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value)

    void glProgramUniformMatrix2x4dvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value)

    void glProgramUniformMatrix3x2dvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value)

    void glProgramUniformMatrix3x4dvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value)

    void glProgramUniformMatrix4x2dvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value)

    void glProgramUniformMatrix4x3dvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value)

EOT

# Filter out GL_UNSIGNED_INT and GL_FLOAT from GL_AMD_performance_monitor

    grep -v 'GL_UNSIGNED_INT ' $1/GL_AMD_performance_monitor > tmp

    mv tmp $1/GL_AMD_performance_monitor

    grep -v 'GL_FLOAT ' $1/GL_AMD_performance_monitor > tmp

    mv tmp $1/GL_AMD_performance_monitor

# Filter out GL_STORAGE_CACHED_APPLE and GL_STORAGE_SHARED_APPLE from GL_APPLE_texture_range

    grep -v 'GL_STORAGE_CACHED_APPLE ' $1/GL_APPLE_texture_range > tmp

    mv tmp $1/GL_APPLE_texture_range

    grep -v 'GL_STORAGE_SHARED_APPLE ' $1/GL_APPLE_texture_range > tmp

    mv tmp $1/GL_APPLE_texture_range

# Filter out GL_RED from GL_ARB_texture_rg

    grep -v 'GL_RED ' $1/GL_ARB_texture_rg > tmp

    mv tmp $1/GL_ARB_texture_rg

# Filter out _EXT enums from GL_ARB_texture_storage

    grep -v '_EXT ' $1/GL_ARB_texture_storage > tmp

    mv tmp $1/GL_ARB_texture_storage

# Filter out TEXTURE_3D enums from GL_EXT_paletted_texture

    grep -v 'TEXTURE_3D' $1/GL_EXT_paletted_texture > tmp

    mv tmp $1/GL_EXT_paletted_texture

# Filter out GL_VERSION_1_1 enums from GL_AMD_stencil_operation_extended

    grep -v '0x150' $1/GL_AMD_stencil_operation_extended > tmp

    mv tmp $1/GL_AMD_stencil_operation_extended

# Filter out from GL_APPLE_ycbcr_422

    grep -v 'GL_UNSIGNED_SHORT_8_8_APPLE' $1/GL_APPLE_ycbcr_422 > tmp

    mv tmp $1/GL_APPLE_ycbcr_422

    grep -v 'GL_UNSIGNED_SHORT_8_8_REV_APPLE' $1/GL_APPLE_ycbcr_422 > tmp

    mv tmp $1/GL_APPLE_ycbcr_422

# Filter out GL_FRAGMENT_DEPTH_EXT from GL_EXT_light_texture

    grep -v 'GL_FRAGMENT_DEPTH_EXT' $1/GL_EXT_light_texture > tmp

    mv tmp $1/GL_EXT_light_texture

# Filter out GL_MULTISAMPLE_BIT_EXT from GL_SGIS_multisample

    grep -v 'GL_MULTISAMPLE_BIT_EXT' $1/GL_SGIS_multisample > tmp

    mv tmp $1/GL_SGIS_multisample

# Filter out GL_COMPRESSED_RGB_S3TC_DXT1_EXT from GL_EXT_texture_compression_dxt1

    grep -v 'GL_COMPRESSED_RGB_S3TC_DXT1_EXT' $1/GL_EXT_texture_compression_dxt1 > tmp

    mv tmp $1/GL_EXT_texture_compression_dxt1

# Filter out GL_COMPRESSED_RGBA_S3TC_DXT1_EXT from GL_EXT_texture_compression_dxt1

    grep -v 'GL_COMPRESSED_RGBA_S3TC_DXT1_EXT' $1/GL_EXT_texture_compression_dxt1 > tmp

    mv tmp $1/GL_EXT_texture_compression_dxt1

# clean up

    rm -f $1/*.bak

fi