Hide ASTC support

Since we don't expose the ASTC related extension string,
we need to hide support for ASTC related enums. ASTC_SUPPORT
was added to easily re-enable ASTC, should we want to.

Change-Id: I3c65906c4729df8a2efb1a9a78e155bccdc715f9
Reviewed-on: https://swiftshader-review.googlesource.com/13749
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

src/Main/Config.hpp

diff --git a/src/Main/Config.hpp b/src/Main/Config.hpp
index b9256ea..8e4943b 100644
--- a/src/Main/Config.hpp
+++ b/src/Main/Config.hpp
@@ -26,6 +26,8 @@
 #define S3TC_SUPPORT 0
 #endif
 
+#define ASTC_SUPPORT 0
+
 // Worker thread count when not set by SwiftConfig
 // 0 = process affinity count (recommended)
 // 1 = rendering on main thread (no worker threads), useful for debugging

src/OpenGL/libGLESv2/Context.cpp

diff --git a/src/OpenGL/libGLESv2/Context.cpp b/src/OpenGL/libGLESv2/Context.cpp
index 360891a..40a3d34 100644
--- a/src/OpenGL/libGLESv2/Context.cpp
+++ b/src/OpenGL/libGLESv2/Context.cpp
@@ -4363,6 +4363,10 @@
 		"GL_EXT_texture_filter_anisotropic",
 		"GL_EXT_texture_format_BGRA8888",
 		"GL_EXT_texture_rg",
+#if (ASTC_SUPPORT)
+		"GL_KHR_texture_compression_astc_hdr",
+		"GL_KHR_texture_compression_astc_ldr",
+#endif
 		"GL_ANGLE_framebuffer_blit",
 		"GL_ANGLE_framebuffer_multisample",
 		"GL_ANGLE_instanced_arrays",

src/OpenGL/libGLESv2/Context.h

diff --git a/src/OpenGL/libGLESv2/Context.h b/src/OpenGL/libGLESv2/Context.h
index ac29824..02d750b 100644
--- a/src/OpenGL/libGLESv2/Context.h
+++ b/src/OpenGL/libGLESv2/Context.h
@@ -126,6 +126,7 @@
 	GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2,
 	GL_COMPRESSED_RGBA8_ETC2_EAC,
 	GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC,
+#if (ASTC_SUPPORT)
 	GL_COMPRESSED_RGBA_ASTC_4x4_KHR,
 	GL_COMPRESSED_RGBA_ASTC_5x4_KHR,
 	GL_COMPRESSED_RGBA_ASTC_5x5_KHR,
@@ -154,7 +155,8 @@
 	GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR,
 	GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR,
 	GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR,
-#endif
+#endif // ASTC_SUPPORT
+#endif // GL_ES_VERSION_3_0
 };
 
 const GLenum GL_TEXTURE_FILTERING_HINT_CHROMIUM = 0x8AF0;

src/OpenGL/libGLESv2/utilities.cpp

diff --git a/src/OpenGL/libGLESv2/utilities.cpp b/src/OpenGL/libGLESv2/utilities.cpp
index 1415b5e..654bbbe 100644
--- a/src/OpenGL/libGLESv2/utilities.cpp
+++ b/src/OpenGL/libGLESv2/utilities.cpp
@@ -491,6 +491,7 @@
 		case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
 		case GL_COMPRESSED_RGBA8_ETC2_EAC:
 		case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
+			return (clientVersion >= 3) ? (expectCompressedFormats ? GL_NONE : GL_INVALID_OPERATION) : GL_INVALID_ENUM;
 		case GL_COMPRESSED_RGBA_ASTC_4x4_KHR:
 		case GL_COMPRESSED_RGBA_ASTC_5x4_KHR:
 		case GL_COMPRESSED_RGBA_ASTC_5x5_KHR:
@@ -519,7 +520,11 @@
 		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR:
 		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR:
 		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR:
-			return (clientVersion >= 3) ? (expectCompressedFormats ? GL_NONE : GL_INVALID_OPERATION) : GL_INVALID_ENUM;
+#if(ASTC_SUPPORT)
+			return ((clientVersion >= 3) && ()) ? (expectCompressedFormats ? GL_NONE : GL_INVALID_OPERATION) : GL_INVALID_ENUM;
+#else
+			return GL_INVALID_ENUM;
+#endif
 		default:
 			return expectCompressedFormats ? GL_INVALID_ENUM : GL_NONE; // Not compressed format
 		}