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#ifndef LIBGLESV2_CAPS_H
#define LIBGLESV2_CAPS_H
//
// Copyright (c) 2014 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.
//
#include "angle_gl.h"
#include <set>
#include <unordered_map>
#include <vector>
#include <string>
namespace gl
{
struct TextureCaps
{
TextureCaps();
// Supports for basic texturing: glTexImage, glTexSubImage, etc
bool texturable;
// Support for linear or anisotropic filtering
bool filterable;
// Support for being used as a framebuffer attachment or renderbuffer format
bool renderable;
std::set<GLuint> sampleCounts;
};
class TextureCapsMap
{
public:
typedef std::unordered_map<GLenum, TextureCaps>::const_iterator const_iterator;
void insert(GLenum internalFormat, const TextureCaps &caps);
void remove(GLenum internalFormat);
const TextureCaps &get(GLenum internalFormat) const;
const_iterator begin() const;
const_iterator end() const;
size_t size() const;
private:
typedef std::unordered_map<GLenum, TextureCaps> InternalFormatToCapsMap;
InternalFormatToCapsMap mCapsMap;
};
struct Extensions
{
Extensions();
// Generate a vector of supported extension strings
std::vector<std::string> getStrings() const;
// Set all texture related extension support based on the supported textures.
// Determines support for:
// GL_OES_rgb8_rgba8
// GL_EXT_texture_format_BGRA8888
// GL_OES_texture_half_float, GL_OES_texture_half_float_linear
// GL_OES_texture_float, GL_OES_texture_float_linear
// GL_EXT_texture_rg
// GL_EXT_texture_compression_dxt1, GL_ANGLE_texture_compression_dxt3, GL_ANGLE_texture_compression_dxt5
// GL_ANGLE_depth_texture
// GL_EXT_color_buffer_float
void setTextureExtensionSupport(const TextureCapsMap &textureCaps);
// ES2 Extension support
// GL_OES_element_index_uint
bool elementIndexUint;
// GL_OES_packed_depth_stencil
bool packedDepthStencil;
// GL_OES_get_program_binary
bool getProgramBinary;
// GL_OES_rgb8_rgba8
// Implies that TextureCaps for GL_RGB8 and GL_RGBA8 exist
bool rgb8rgba8;
// GL_EXT_texture_format_BGRA8888
// Implies that TextureCaps for GL_BGRA8 exist
bool textureFormatBGRA8888;
// GL_EXT_read_format_bgra
bool readFormatBGRA;
// GL_NV_pixel_buffer_object
bool pixelBufferObject;
// GL_OES_mapbuffer and GL_EXT_map_buffer_range
bool mapBuffer;
bool mapBufferRange;
// GL_OES_texture_half_float and GL_OES_texture_half_float_linear
// Implies that TextureCaps for GL_RGB16F, GL_RGBA16F, GL_ALPHA32F_EXT, GL_LUMINANCE32F_EXT and
// GL_LUMINANCE_ALPHA32F_EXT exist
bool textureHalfFloat;
bool textureHalfFloatLinear;
// GL_OES_texture_float and GL_OES_texture_float_linear
// Implies that TextureCaps for GL_RGB32F, GL_RGBA32F, GL_ALPHA16F_EXT, GL_LUMINANCE16F_EXT and
// GL_LUMINANCE_ALPHA16F_EXT exist
bool textureFloat;
bool textureFloatLinear;
// GL_EXT_texture_rg
// Implies that TextureCaps for GL_R8, GL_RG8 (and floating point R/RG texture formats if floating point extensions
// are also present) exist
bool textureRG;
// GL_EXT_texture_compression_dxt1, GL_ANGLE_texture_compression_dxt3 and GL_ANGLE_texture_compression_dxt5
// Implies that TextureCaps for GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
// GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE and GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE
bool textureCompressionDXT1;
bool textureCompressionDXT3;
bool textureCompressionDXT5;
// GL_EXT_sRGB
// Implies that TextureCaps for GL_SRGB8_ALPHA8 and GL_SRGB8 exist
// TODO: Don't advertise this extension in ES3
bool sRGB;
// GL_ANGLE_depth_texture
bool depthTextures;
// GL_EXT_texture_storage
bool textureStorage;
// GL_OES_texture_npot
bool textureNPOT;
// GL_EXT_draw_buffers
bool drawBuffers;
// GL_EXT_texture_filter_anisotropic
bool textureFilterAnisotropic;
GLfloat maxTextureAnisotropy;
// GL_EXT_occlusion_query_boolean
bool occlusionQueryBoolean;
// GL_NV_fence
bool fence;
// GL_ANGLE_timer_query
bool timerQuery;
// GL_EXT_robustness
bool robustness;
// GL_EXT_blend_minmax
bool blendMinMax;
// GL_ANGLE_framebuffer_blit
bool framebufferBlit;
// GL_ANGLE_framebuffer_multisample
bool framebufferMultisample;
// GL_ANGLE_instanced_arrays
bool instancedArrays;
// GL_ANGLE_pack_reverse_row_order
bool packReverseRowOrder;
// GL_OES_standard_derivatives
bool standardDerivatives;
// GL_EXT_shader_texture_lod
bool shaderTextureLOD;
// GL_EXT_frag_depth
bool fragDepth;
// GL_ANGLE_texture_usage
bool textureUsage;
// GL_ANGLE_translated_shader_source
bool translatedShaderSource;
// ES3 Extension support
// GL_EXT_color_buffer_float
bool colorBufferFloat;
};
struct Caps
{
Caps();
// Table 6.28, implementation dependent values
GLuint64 maxElementIndex;
GLuint max3DTextureSize;
GLuint max2DTextureSize;
GLuint maxArrayTextureLayers;
GLfloat maxLODBias;
GLuint maxCubeMapTextureSize;
GLuint maxRenderbufferSize;
GLuint maxDrawBuffers;
GLuint maxColorAttachments;
GLuint maxViewportWidth;
GLuint maxViewportHeight;
GLfloat minAliasedPointSize;
GLfloat maxAliasedPointSize;
GLfloat minAliasedLineWidth;
GLfloat maxAliasedLineWidth;
};
}
#endif // LIBGLESV2_CAPS_H
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