зеркало из https://github.com/mozilla/gecko-dev.git
432 строки
10 KiB
C++
432 строки
10 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef WEBGL_FORMATS_H_
|
|
#define WEBGL_FORMATS_H_
|
|
|
|
#include <map>
|
|
#include <set>
|
|
|
|
#include "mozilla/UniquePtr.h"
|
|
#include "WebGLTypes.h"
|
|
|
|
namespace mozilla {
|
|
namespace webgl {
|
|
|
|
using EffectiveFormatValueT = uint8_t;
|
|
|
|
enum class EffectiveFormat : EffectiveFormatValueT {
|
|
// GLES 3.0.4, p128-129, "Required Texture Formats"
|
|
// "Texture and renderbuffer color formats"
|
|
RGBA32I,
|
|
RGBA32UI,
|
|
RGBA16I,
|
|
RGBA16UI,
|
|
RGBA8,
|
|
RGBA8I,
|
|
RGBA8UI,
|
|
SRGB8_ALPHA8,
|
|
RGB10_A2,
|
|
RGB10_A2UI,
|
|
RGBA4,
|
|
RGB5_A1,
|
|
|
|
RGB8,
|
|
RGB565,
|
|
|
|
RG32I,
|
|
RG32UI,
|
|
RG16I,
|
|
RG16UI,
|
|
RG8,
|
|
RG8I,
|
|
RG8UI,
|
|
|
|
R32I,
|
|
R32UI,
|
|
R16I,
|
|
R16UI,
|
|
R8,
|
|
R8I,
|
|
R8UI,
|
|
|
|
// "Texture-only color formats"
|
|
RGBA32F,
|
|
RGBA16F,
|
|
RGBA8_SNORM,
|
|
|
|
RGB32F,
|
|
RGB32I,
|
|
RGB32UI,
|
|
|
|
RGB16F,
|
|
RGB16I,
|
|
RGB16UI,
|
|
|
|
RGB8_SNORM,
|
|
RGB8I,
|
|
RGB8UI,
|
|
SRGB8,
|
|
|
|
R11F_G11F_B10F,
|
|
RGB9_E5,
|
|
|
|
RG32F,
|
|
RG16F,
|
|
RG8_SNORM,
|
|
|
|
R32F,
|
|
R16F,
|
|
R8_SNORM,
|
|
|
|
// "Depth formats"
|
|
DEPTH_COMPONENT32F,
|
|
DEPTH_COMPONENT24,
|
|
DEPTH_COMPONENT16,
|
|
|
|
// "Combined depth+stencil formats"
|
|
DEPTH32F_STENCIL8,
|
|
DEPTH24_STENCIL8,
|
|
|
|
// GLES 3.0.4, p205-206, "Required Renderbuffer Formats"
|
|
STENCIL_INDEX8,
|
|
|
|
////////////////////////////////////
|
|
|
|
// GLES 3.0.4, p147, table 3.19
|
|
// GLES 3.0.4, p286+, $C.1 "ETC Compressed Texture Image Formats"
|
|
COMPRESSED_R11_EAC,
|
|
COMPRESSED_SIGNED_R11_EAC,
|
|
COMPRESSED_RG11_EAC,
|
|
COMPRESSED_SIGNED_RG11_EAC,
|
|
COMPRESSED_RGB8_ETC2,
|
|
COMPRESSED_SRGB8_ETC2,
|
|
COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2,
|
|
COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2,
|
|
COMPRESSED_RGBA8_ETC2_EAC,
|
|
COMPRESSED_SRGB8_ALPHA8_ETC2_EAC,
|
|
|
|
// EXT_texture_compression_bptc
|
|
COMPRESSED_RGBA_BPTC_UNORM,
|
|
COMPRESSED_SRGB_ALPHA_BPTC_UNORM,
|
|
COMPRESSED_RGB_BPTC_SIGNED_FLOAT,
|
|
COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT,
|
|
|
|
// EXT_texture_compression_rgtc
|
|
COMPRESSED_RED_RGTC1,
|
|
COMPRESSED_SIGNED_RED_RGTC1,
|
|
COMPRESSED_RG_RGTC2,
|
|
COMPRESSED_SIGNED_RG_RGTC2,
|
|
|
|
// EXT_texture_compression_s3tc
|
|
COMPRESSED_RGB_S3TC_DXT1_EXT,
|
|
COMPRESSED_RGBA_S3TC_DXT1_EXT,
|
|
COMPRESSED_RGBA_S3TC_DXT3_EXT,
|
|
COMPRESSED_RGBA_S3TC_DXT5_EXT,
|
|
|
|
// EXT_texture_sRGB
|
|
COMPRESSED_SRGB_S3TC_DXT1_EXT,
|
|
COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT,
|
|
COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT,
|
|
COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT,
|
|
|
|
// KHR_texture_compression_astc_ldr
|
|
COMPRESSED_RGBA_ASTC_4x4_KHR,
|
|
COMPRESSED_RGBA_ASTC_5x4_KHR,
|
|
COMPRESSED_RGBA_ASTC_5x5_KHR,
|
|
COMPRESSED_RGBA_ASTC_6x5_KHR,
|
|
COMPRESSED_RGBA_ASTC_6x6_KHR,
|
|
COMPRESSED_RGBA_ASTC_8x5_KHR,
|
|
COMPRESSED_RGBA_ASTC_8x6_KHR,
|
|
COMPRESSED_RGBA_ASTC_8x8_KHR,
|
|
COMPRESSED_RGBA_ASTC_10x5_KHR,
|
|
COMPRESSED_RGBA_ASTC_10x6_KHR,
|
|
COMPRESSED_RGBA_ASTC_10x8_KHR,
|
|
COMPRESSED_RGBA_ASTC_10x10_KHR,
|
|
COMPRESSED_RGBA_ASTC_12x10_KHR,
|
|
COMPRESSED_RGBA_ASTC_12x12_KHR,
|
|
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR,
|
|
COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR,
|
|
|
|
// IMG_texture_compression_pvrtc
|
|
COMPRESSED_RGB_PVRTC_4BPPV1,
|
|
COMPRESSED_RGBA_PVRTC_4BPPV1,
|
|
COMPRESSED_RGB_PVRTC_2BPPV1,
|
|
COMPRESSED_RGBA_PVRTC_2BPPV1,
|
|
|
|
// OES_compressed_ETC1_RGB8_texture
|
|
ETC1_RGB8_OES,
|
|
|
|
////////////////////////////////////
|
|
|
|
// GLES 3.0.4, p128, table 3.12.
|
|
Luminance8Alpha8,
|
|
Luminance8,
|
|
Alpha8,
|
|
|
|
// OES_texture_float
|
|
Luminance32FAlpha32F,
|
|
Luminance32F,
|
|
Alpha32F,
|
|
|
|
// OES_texture_half_float
|
|
Luminance16FAlpha16F,
|
|
Luminance16F,
|
|
Alpha16F,
|
|
|
|
// EXT_texture_norm16
|
|
R16,
|
|
RG16,
|
|
RGB16,
|
|
RGBA16,
|
|
R16_SNORM,
|
|
RG16_SNORM,
|
|
RGB16_SNORM,
|
|
RGBA16_SNORM,
|
|
|
|
MAX,
|
|
};
|
|
|
|
enum class UnsizedFormat : uint8_t {
|
|
R,
|
|
RG,
|
|
RGB,
|
|
RGBA,
|
|
LA,
|
|
L,
|
|
A,
|
|
D,
|
|
S,
|
|
DEPTH_STENCIL, // `DS` is a macro on Solaris. (regset.h)
|
|
};
|
|
|
|
// GLES 3.0.4 p114 Table 3.4, p240
|
|
enum class ComponentType : uint8_t {
|
|
Int, // RGBA32I
|
|
UInt, // RGBA32UI
|
|
NormInt, // RGBA8_SNORM
|
|
NormUInt, // RGBA8
|
|
Float, // RGBA32F
|
|
};
|
|
const char* ToString(ComponentType);
|
|
|
|
enum class TextureBaseType : uint8_t {
|
|
Int = uint8_t(ComponentType::Int),
|
|
UInt = uint8_t(ComponentType::UInt),
|
|
Float = uint8_t(ComponentType::Float), // Also includes NormU?Int and Depth
|
|
};
|
|
|
|
const char* ToString(TextureBaseType);
|
|
|
|
enum class CompressionFamily : uint8_t {
|
|
ASTC,
|
|
BPTC,
|
|
ES3, // ETC2 or EAC
|
|
ETC1,
|
|
PVRTC,
|
|
RGTC,
|
|
S3TC,
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
struct CompressedFormatInfo {
|
|
const EffectiveFormat effectiveFormat;
|
|
const uint8_t bytesPerBlock;
|
|
const uint8_t blockWidth;
|
|
const uint8_t blockHeight;
|
|
const CompressionFamily family;
|
|
};
|
|
|
|
struct FormatInfo {
|
|
const EffectiveFormat effectiveFormat;
|
|
const char* const name;
|
|
const GLenum sizedFormat;
|
|
const UnsizedFormat unsizedFormat;
|
|
const ComponentType componentType;
|
|
const TextureBaseType baseType;
|
|
const bool isSRGB;
|
|
|
|
const CompressedFormatInfo* const compression;
|
|
|
|
const uint8_t estimatedBytesPerPixel; // 0 iff bool(compression).
|
|
|
|
// In bits. Iff bool(compression), active channels are 1.
|
|
const uint8_t r;
|
|
const uint8_t g;
|
|
const uint8_t b;
|
|
const uint8_t a;
|
|
const uint8_t d;
|
|
const uint8_t s;
|
|
|
|
//////
|
|
|
|
std::map<UnsizedFormat, const FormatInfo*> copyDecayFormats;
|
|
|
|
const FormatInfo* GetCopyDecayFormat(UnsizedFormat) const;
|
|
|
|
bool IsColorFormat() const {
|
|
// Alpha is a 'color format' since it's 'color-attachable'.
|
|
return bool(compression) || bool(r | g | b | a);
|
|
}
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
struct PackingInfoInfo final {
|
|
uint8_t bytesPerElement = 0;
|
|
uint8_t elementsPerPixel = 0; // E.g. 1 for LOCAL_GL_UNSIGNED_SHORT_4_4_4_4
|
|
bool isPacked = false;
|
|
|
|
static Maybe<PackingInfoInfo> For(const PackingInfo&);
|
|
|
|
inline uint8_t BytesPerPixel() const {
|
|
return bytesPerElement * elementsPerPixel;
|
|
}
|
|
};
|
|
|
|
const FormatInfo* GetFormat(EffectiveFormat format);
|
|
uint8_t BytesPerPixel(const PackingInfo& packing);
|
|
bool GetBytesPerPixel(const PackingInfo& packing, uint8_t* const out_bytes);
|
|
/*
|
|
GLint ComponentSize(const FormatInfo* format, GLenum component);
|
|
GLenum ComponentType(const FormatInfo* format);
|
|
*/
|
|
////////////////////////////////////////
|
|
|
|
struct FormatRenderableState final {
|
|
private:
|
|
enum class RenderableState {
|
|
Disabled,
|
|
Implicit,
|
|
Explicit,
|
|
};
|
|
|
|
public:
|
|
RenderableState state = RenderableState::Disabled;
|
|
WebGLExtensionID extid = WebGLExtensionID::Max;
|
|
|
|
static FormatRenderableState Explicit() {
|
|
return {RenderableState::Explicit};
|
|
}
|
|
|
|
static FormatRenderableState Implicit(WebGLExtensionID extid) {
|
|
return {RenderableState::Implicit, extid};
|
|
}
|
|
|
|
bool IsRenderable() const { return state != RenderableState::Disabled; }
|
|
bool IsExplicit() const { return state == RenderableState::Explicit; }
|
|
};
|
|
|
|
struct FormatUsageInfo {
|
|
const FormatInfo* const format;
|
|
|
|
private:
|
|
FormatRenderableState renderableState;
|
|
|
|
public:
|
|
bool isFilterable = false;
|
|
|
|
std::map<PackingInfo, DriverUnpackInfo> validUnpacks;
|
|
const DriverUnpackInfo* idealUnpack = nullptr;
|
|
|
|
const GLint* textureSwizzleRGBA = nullptr;
|
|
|
|
private:
|
|
mutable bool maxSamplesKnown = false;
|
|
mutable uint32_t maxSamples = 0;
|
|
|
|
public:
|
|
static const GLint kLuminanceSwizzleRGBA[4];
|
|
static const GLint kAlphaSwizzleRGBA[4];
|
|
static const GLint kLumAlphaSwizzleRGBA[4];
|
|
|
|
explicit FormatUsageInfo(const FormatInfo* const _format) : format(_format) {
|
|
if (format->IsColorFormat() && format->baseType != TextureBaseType::Float) {
|
|
maxSamplesKnown = true;
|
|
}
|
|
}
|
|
|
|
bool IsRenderable() const { return renderableState.IsRenderable(); }
|
|
void SetRenderable(
|
|
const FormatRenderableState& state = FormatRenderableState::Explicit());
|
|
bool IsExplicitlyRenderable() const { return renderableState.IsExplicit(); }
|
|
WebGLExtensionID GetExtensionID() const {
|
|
MOZ_ASSERT(renderableState.extid != WebGLExtensionID::Max);
|
|
return renderableState.extid;
|
|
}
|
|
|
|
bool IsUnpackValid(const PackingInfo& key,
|
|
const DriverUnpackInfo** const out_value) const;
|
|
|
|
private:
|
|
void ResolveMaxSamples(gl::GLContext& gl) const;
|
|
|
|
public:
|
|
uint32_t MaxSamples(gl::GLContext& gl) const {
|
|
if (!maxSamplesKnown) {
|
|
ResolveMaxSamples(gl);
|
|
}
|
|
return maxSamples;
|
|
}
|
|
};
|
|
|
|
class FormatUsageAuthority {
|
|
std::map<EffectiveFormat, FormatUsageInfo> mUsageMap;
|
|
|
|
std::map<GLenum, const FormatUsageInfo*> mRBFormatMap;
|
|
std::map<GLenum, const FormatUsageInfo*> mSizedTexFormatMap;
|
|
std::map<PackingInfo, const FormatUsageInfo*> mUnsizedTexFormatMap;
|
|
|
|
std::set<GLenum> mValidTexInternalFormats;
|
|
std::set<GLenum> mValidTexUnpackFormats;
|
|
std::set<GLenum> mValidTexUnpackTypes;
|
|
|
|
public:
|
|
static UniquePtr<FormatUsageAuthority> CreateForWebGL1(gl::GLContext* gl);
|
|
static UniquePtr<FormatUsageAuthority> CreateForWebGL2(gl::GLContext* gl);
|
|
|
|
private:
|
|
FormatUsageAuthority() = default;
|
|
|
|
public:
|
|
FormatUsageInfo* EditUsage(EffectiveFormat format);
|
|
const FormatUsageInfo* GetUsage(EffectiveFormat format) const;
|
|
|
|
void AddTexUnpack(FormatUsageInfo* usage, const PackingInfo& pi,
|
|
const DriverUnpackInfo& dui);
|
|
|
|
bool IsInternalFormatEnumValid(GLenum internalFormat) const;
|
|
bool AreUnpackEnumsValid(GLenum unpackFormat, GLenum unpackType) const;
|
|
|
|
void AllowRBFormat(GLenum sizedFormat, const FormatUsageInfo* usage,
|
|
bool expectRenderable = true);
|
|
void AllowSizedTexFormat(GLenum sizedFormat, const FormatUsageInfo* usage);
|
|
void AllowUnsizedTexFormat(const PackingInfo& pi,
|
|
const FormatUsageInfo* usage);
|
|
|
|
const FormatUsageInfo* GetRBUsage(GLenum sizedFormat) const;
|
|
const FormatUsageInfo* GetSizedTexUsage(GLenum sizedFormat) const;
|
|
const FormatUsageInfo* GetUnsizedTexUsage(const PackingInfo& pi) const;
|
|
};
|
|
|
|
} // namespace webgl
|
|
} // namespace mozilla
|
|
|
|
#endif // WEBGL_FORMATS_H_
|