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Unified Diff: src/gpu/gl/GrGLCaps.cpp

Issue 302553008: Revert of Revert of Add compressed texture capabilities for GPU devices (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 6 years, 7 months ago
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Index: src/gpu/gl/GrGLCaps.cpp
diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index f577e9d740398dc5ca53fec9379b2e7266f544db..6523e032335f30925587a34e51a6cbe868283f50 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -369,6 +369,8 @@
this->initConfigRenderableTable(ctxInfo);
+ this->initCompressedTextureSupport(ctxInfo);
+
return true;
}
@@ -456,6 +458,38 @@
fConfigRenderSupport[i][kYes_MSAA] = false;
}
}
+}
+
+void GrGLCaps::initCompressedTextureSupport(const GrGLContextInfo &ctxInfo) {
+ GrGLStandard standard = ctxInfo.standard();
+ GrGLVersion version = ctxInfo.version();
+
+ // glCompressedTexImage2D is available on all OpenGL ES devices...
+ // however, it is only available on standard OpenGL after version 1.3
+ if (kGL_GrGLStandard == standard && version < GR_GL_VER(1, 3)) {
+ return;
+ }
+
+ // Check for ETC1
+ bool hasETC1 = false;
+
+ // First check version for support
+ if (kGL_GrGLStandard == standard) {
+ hasETC1 =
+ version >= GR_GL_VER(4, 3) ||
+ ctxInfo.hasExtension("GL_ARB_ES3_compatibility");
+ } else {
+ hasETC1 =
+ version >= GR_GL_VER(3, 0) ||
+ ctxInfo.hasExtension("GL_OES_compressed_ETC1_RGB8_texture") ||
+ // ETC2 is a superset of ETC1, so we can just check for that, too.
+ (ctxInfo.hasExtension("GL_OES_compressed_ETC2_RGB8_texture") &&
+ ctxInfo.hasExtension("GL_OES_compressed_ETC2_RGBA8_texture"));
+ }
+ fCompressedFormatSupport[kETC1_GrCompressedFormat] = hasETC1;
+
+ fCompressedFormatSupport[kETC2_GrCompressedFormat] = false;
+ fCompressedFormatSupport[kDXT1_GrCompressedFormat] = false;
}
bool GrGLCaps::readPixelsSupported(const GrGLInterface* intf,
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