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Commit 836674c2 by Geoff Lang Committed by Commit Bot
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Expose GL_CHROMIUM_compressed_texture_etc on top of ES drivers.

This allows Chrome to expose the ETC texture formats in WebGL on top of ANGLE. BUG=angleproject:1552 Change-Id: I6a6c3912791e121826b2083421e37df7c0dc38e7 Reviewed-on: https://chromium-review.googlesource.com/c/1342420 Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: 's avatarKai Ninomiya <kainino@chromium.org>
parent ab130438
Showing with 47 additions and 12 deletions
src/libANGLE/Caps.cpp
......@@ -177,6 +177,7 @@ Extensions::Extensions()
compressedEACR11SignedTexture(false),
compressedEACRG11UnsignedTexture(false),
compressedEACRG11SignedTexture(false),
compressedTextureETC(false),
sRGB(false),
depthTextures(false),
depth32(false),
......@@ -730,6 +731,22 @@ static bool DetermineBPTCTextureSupport(const TextureCapsMap &textureCaps)
return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false);
}
bool DetermineCompressedTextureETCSupport(const TextureCapsMap &textureCaps)
{
constexpr GLenum requiredFormats[] = {GL_COMPRESSED_R11_EAC,
GL_COMPRESSED_SIGNED_R11_EAC,
GL_COMPRESSED_RG11_EAC,
GL_COMPRESSED_SIGNED_RG11_EAC,
GL_COMPRESSED_RGB8_ETC2,
GL_COMPRESSED_SRGB8_ETC2,
GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2,
GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2,
GL_COMPRESSED_RGBA8_ETC2_EAC,
GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC};
return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false);
}
void Extensions::setTextureExtensionSupport(const TextureCapsMap &textureCaps)
{
// TODO(ynovikov): rgb8rgba8, colorBufferHalfFloat, textureHalfFloat, textureHalfFloatLinear,
......@@ -814,6 +831,7 @@ const ExtensionInfoMap &GetExtensionInfoMap()
map["GL_EXT_texture_compression_s3tc_srgb"] = enableableExtension(&Extensions::textureCompressionS3TCsRGB);
map["GL_KHR_texture_compression_astc_hdr"] = enableableExtension(&Extensions::textureCompressionASTCHDR);
map["GL_KHR_texture_compression_astc_ldr"] = enableableExtension(&Extensions::textureCompressionASTCLDR);
map["GL_EXT_texture_compression_bptc"] = enableableExtension(&Extensions::textureCompressionBPTC);
map["GL_OES_compressed_ETC1_RGB8_texture"] = enableableExtension(&Extensions::compressedETC1RGB8Texture);
map["OES_compressed_ETC2_RGB8_texture"] = enableableExtension(&Extensions::compressedETC2RGB8Texture);
map["OES_compressed_ETC2_sRGB8_texture"] = enableableExtension(&Extensions::compressedETC2sRGB8Texture);
......@@ -825,7 +843,7 @@ const ExtensionInfoMap &GetExtensionInfoMap()
map["OES_compressed_EAC_R11_signed_texture"] = enableableExtension(&Extensions::compressedEACR11SignedTexture);
map["OES_compressed_EAC_RG11_unsigned_texture"] = enableableExtension(&Extensions::compressedEACRG11UnsignedTexture);
map["OES_compressed_EAC_RG11_signed_texture"] = enableableExtension(&Extensions::compressedEACRG11SignedTexture);
map["GL_EXT_texture_compression_bptc"] = enableableExtension(&Extensions::textureCompressionBPTC);
map["GL_CHROMIUM_compressed_texture_etc"] = enableableExtension(&Extensions::compressedTextureETC);
map["GL_EXT_sRGB"] = enableableExtension(&Extensions::sRGB);
map["GL_ANGLE_depth_texture"] = esOnlyExtension(&Extensions::depthTextures);
map["GL_OES_depth32"] = esOnlyExtension(&Extensions::depth32);
......
src/libANGLE/Caps.h
......@@ -85,6 +85,10 @@ void InitMinimumTextureCapsMap(const Version &clientVersion,
const Extensions &extensions,
TextureCapsMap *capsMap);
// Returns true if all the formats required to support GL_CHROMIUM_compressed_texture_etc are
// present. Does not determine if they are natively supported without decompression.
bool DetermineCompressedTextureETCSupport(const TextureCapsMap &textureCaps);
struct Extensions
{
Extensions();
......@@ -220,6 +224,13 @@ struct Extensions
// OES_compressed_EAC_RG11_signed_texture
bool compressedEACRG11SignedTexture;
// GL_CHROMIUM_compressed_texture_etc
// ONLY exposed if ETC texture formats are natively supported without decompression
// Backends should enable this extension explicitly. It is not enabled with
// setTextureExtensionSupport, use DetermineCompressedTextureETCSupport to check if all of the
// individual formats required to support this extension are available.
bool compressedTextureETC;
// GL_EXT_sRGB
// Implies that TextureCaps for GL_SRGB8_ALPHA8 and GL_SRGB8 exist
// TODO: Don't advertise this extension in ES3
......
src/libANGLE/formatutils.cpp
......@@ -829,17 +829,17 @@ static InternalFormatInfoMap BuildInternalFormatInfoMap()
AddLUMAFormat(&map, GL_LUMINANCE_ALPHA32F_EXT, true, 32, 32, GL_LUMINANCE_ALPHA, GL_FLOAT, GL_FLOAT, RequireExtAndExt<&Extensions::textureStorage, &Extensions::textureFloat>, RequireExt<&Extensions::textureFloatLinear>, NeverSupported, NeverSupported);
// Compressed formats, From ES 3.0.1 spec, table 3.16
// | Internal format |W |H | BS |CC| Format | Type | SRGB | Texture supported | Filterable | Texture attachment | Renderbuffer |
AddCompressedFormat(&map, GL_COMPRESSED_R11_EAC, 4, 4, 64, 1, GL_RED, GL_UNSIGNED_BYTE, false, RequireESOrExt<3, 0, &Extensions::compressedEACR11UnsignedTexture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_SIGNED_R11_EAC, 4, 4, 64, 1, GL_RED, GL_UNSIGNED_BYTE, false, RequireESOrExt<3, 0, &Extensions::compressedEACR11SignedTexture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_RG11_EAC, 4, 4, 128, 2, GL_RG, GL_UNSIGNED_BYTE, false, RequireESOrExt<3, 0, &Extensions::compressedEACRG11UnsignedTexture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_SIGNED_RG11_EAC, 4, 4, 128, 2, GL_RG, GL_UNSIGNED_BYTE, false, RequireESOrExt<3, 0, &Extensions::compressedEACRG11SignedTexture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_RGB8_ETC2, 4, 4, 64, 3, GL_RGB, GL_UNSIGNED_BYTE, false, RequireESOrExt<3, 0, &Extensions::compressedETC2RGB8Texture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ETC2, 4, 4, 64, 3, GL_RGB, GL_UNSIGNED_BYTE, true, RequireESOrExt<3, 0, &Extensions::compressedETC2sRGB8Texture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, 4, 4, 64, 3, GL_RGB, GL_UNSIGNED_BYTE, false, RequireESOrExt<3, 0, &Extensions::compressedETC2PunchthroughARGB8Texture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, 4, 4, 64, 3, GL_RGB, GL_UNSIGNED_BYTE, true, RequireESOrExt<3, 0, &Extensions::compressedETC2PunchthroughAsRGB8AlphaTexture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_RGBA8_ETC2_EAC, 4, 4, 128, 4, GL_RGBA, GL_UNSIGNED_BYTE, false, RequireESOrExt<3, 0, &Extensions::compressedETC2RGBA8Texture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, 4, 4, 128, 4, GL_RGBA, GL_UNSIGNED_BYTE, true, RequireESOrExt<3, 0, &Extensions::compressedETC2sRGB8Alpha8Texture>, AlwaysSupported, NeverSupported, NeverSupported);
// | Internal format |W |H | BS |CC| Format | Type | SRGB | Texture supported | Filterable | Texture attachment | Renderbuffer |
AddCompressedFormat(&map, GL_COMPRESSED_R11_EAC, 4, 4, 64, 1, GL_RED, GL_UNSIGNED_BYTE, false, RequireESOrExtOrExt<3, 0, &Extensions::compressedTextureETC, &Extensions::compressedEACR11UnsignedTexture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_SIGNED_R11_EAC, 4, 4, 64, 1, GL_RED, GL_UNSIGNED_BYTE, false, RequireESOrExtOrExt<3, 0, &Extensions::compressedTextureETC, &Extensions::compressedEACR11SignedTexture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_RG11_EAC, 4, 4, 128, 2, GL_RG, GL_UNSIGNED_BYTE, false, RequireESOrExtOrExt<3, 0, &Extensions::compressedTextureETC, &Extensions::compressedEACRG11UnsignedTexture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_SIGNED_RG11_EAC, 4, 4, 128, 2, GL_RG, GL_UNSIGNED_BYTE, false, RequireESOrExtOrExt<3, 0, &Extensions::compressedTextureETC, &Extensions::compressedEACRG11SignedTexture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_RGB8_ETC2, 4, 4, 64, 3, GL_RGB, GL_UNSIGNED_BYTE, false, RequireESOrExtOrExt<3, 0, &Extensions::compressedTextureETC, &Extensions::compressedETC2RGB8Texture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ETC2, 4, 4, 64, 3, GL_RGB, GL_UNSIGNED_BYTE, true, RequireESOrExtOrExt<3, 0, &Extensions::compressedTextureETC, &Extensions::compressedETC2sRGB8Texture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, 4, 4, 64, 3, GL_RGB, GL_UNSIGNED_BYTE, false, RequireESOrExtOrExt<3, 0, &Extensions::compressedTextureETC, &Extensions::compressedETC2PunchthroughARGB8Texture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, 4, 4, 64, 3, GL_RGB, GL_UNSIGNED_BYTE, true, RequireESOrExtOrExt<3, 0, &Extensions::compressedTextureETC, &Extensions::compressedETC2PunchthroughAsRGB8AlphaTexture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_RGBA8_ETC2_EAC, 4, 4, 128, 4, GL_RGBA, GL_UNSIGNED_BYTE, false, RequireESOrExtOrExt<3, 0, &Extensions::compressedTextureETC, &Extensions::compressedETC2RGBA8Texture>, AlwaysSupported, NeverSupported, NeverSupported);
AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, 4, 4, 128, 4, GL_RGBA, GL_UNSIGNED_BYTE, true, RequireESOrExtOrExt<3, 0, &Extensions::compressedTextureETC, &Extensions::compressedETC2sRGB8Alpha8Texture>, AlwaysSupported, NeverSupported, NeverSupported);
// From GL_EXT_texture_compression_dxt1
// | Internal format |W |H | BS |CC| Format | Type | SRGB | Texture supported | Filterable | Texture attachment | Renderbuffer |
......
src/libANGLE/renderer/gl/renderergl_utils.cpp
......@@ -1195,6 +1195,12 @@ void GenerateCaps(const FunctionsGL *functions,
// for more information about this limitation.
extensions->maxDualSourceDrawBuffers = 1;
}
// GL_CHROMIUM_compressed_texture_etc
// Expose this extension only when we support the formats or we're running on top of a native
// ES driver.
extensions->compressedTextureETC = functions->standard == STANDARD_GL_ES &&
gl::DetermineCompressedTextureETCSupport(*textureCapsMap);
}
void GenerateWorkarounds(const FunctionsGL *functions, WorkaroundsGL *workarounds)
......
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