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//
// Copyright 2017 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// ExtensionBehavior.cpp: Extension name enumeration and data structures for storing extension
// behavior.
#include "compiler/translator/ExtensionBehavior.h"
#include "common/debug.h"
#include <string.h>
#define LIST_EXTENSIONS(OP) \
OP(ANDROID_extension_pack_es31a) \
OP(ANGLE_base_vertex_base_instance_shader_builtin) \
OP(ANGLE_multi_draw) \
OP(ANGLE_shader_pixel_local_storage) \
OP(ANGLE_texture_multisample) \
OP(APPLE_clip_distance) \
OP(ARB_texture_rectangle) \
OP(ARM_shader_framebuffer_fetch) \
OP(EXT_blend_func_extended) \
OP(EXT_clip_cull_distance) \
OP(EXT_draw_buffers) \
OP(EXT_frag_depth) \
OP(EXT_geometry_shader) \
OP(OES_geometry_shader) \
OP(OES_shader_io_blocks) \
OP(EXT_shader_io_blocks) \
OP(EXT_gpu_shader5) \
OP(EXT_primitive_bounding_box) \
OP(OES_primitive_bounding_box) \
OP(EXT_shader_framebuffer_fetch) \
OP(EXT_shader_framebuffer_fetch_non_coherent) \
OP(EXT_shader_non_constant_global_initializers) \
OP(EXT_shader_texture_lod) \
OP(EXT_shadow_samplers) \
OP(EXT_tessellation_shader) \
OP(EXT_texture_buffer) \
OP(EXT_texture_cube_map_array) \
OP(EXT_YUV_target) \
OP(KHR_blend_equation_advanced) \
OP(NV_EGL_stream_consumer_external) \
OP(NV_shader_framebuffer_fetch) \
OP(NV_shader_noperspective_interpolation) \
OP(OES_EGL_image_external) \
OP(OES_EGL_image_external_essl3) \
OP(OES_sample_variables) \
OP(OES_shader_multisample_interpolation) \
OP(OES_shader_image_atomic) \
OP(OES_standard_derivatives) \
OP(OES_texture_3D) \
OP(OES_texture_buffer) \
OP(OES_texture_cube_map_array) \
OP(OES_texture_storage_multisample_2d_array) \
OP(OVR_multiview) \
OP(OVR_multiview2) \
OP(WEBGL_video_texture)
namespace sh
{
#define RETURN_EXTENSION_NAME_CASE(ext) \
case TExtension::ext: \
return "GL_" #ext;
const char *GetExtensionNameString(TExtension extension)
{
switch (extension)
{
LIST_EXTENSIONS(RETURN_EXTENSION_NAME_CASE)
default:
UNREACHABLE();
return "";
}
}
#define RETURN_EXTENSION_IF_NAME_MATCHES(ext) \
if (strcmp(extWithoutGLPrefix, #ext) == 0) \
{ \
return TExtension::ext; \
}
TExtension GetExtensionByName(const char *extension)
{
// If first characters of the extension don't equal "GL_", early out.
if (strncmp(extension, "GL_", 3) != 0)
{
return TExtension::UNDEFINED;
}
const char *extWithoutGLPrefix = extension + 3;
LIST_EXTENSIONS(RETURN_EXTENSION_IF_NAME_MATCHES)
return TExtension::UNDEFINED;
}
const char *GetBehaviorString(TBehavior b)
{
switch (b)
{
case EBhRequire:
return "require";
case EBhEnable:
return "enable";
case EBhWarn:
return "warn";
case EBhDisable:
return "disable";
default:
return nullptr;
}
}
bool IsExtensionEnabled(const TExtensionBehavior &extBehavior, TExtension extension)
{
ASSERT(extension != TExtension::UNDEFINED);
auto iter = extBehavior.find(extension);
return iter != extBehavior.end() &&
(iter->second == EBhEnable || iter->second == EBhRequire || iter->second == EBhWarn);
}
} // namespace sh
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