Import EGL/GLES translator

external/android-emugl/host/libs/Translator/EGL/EglValidate.cpp

@@ -0,0 +1,112 @@
+/*
+* Copyright (C) 2011 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+#include "EglValidate.h"
+#include <GLcommon/GLutils.h>
+
+// static
+bool EglValidate::confAttrib(EGLint attrib) {
+    switch(attrib) {
+    case EGL_BUFFER_SIZE:
+    case EGL_RED_SIZE:
+    case EGL_GREEN_SIZE:
+    case EGL_BLUE_SIZE:
+    case EGL_ALPHA_SIZE:
+    case EGL_BIND_TO_TEXTURE_RGB:
+    case EGL_BIND_TO_TEXTURE_RGBA:
+    case EGL_CONFIG_CAVEAT:
+    case EGL_CONFIG_ID:
+    case EGL_DEPTH_SIZE:
+    case EGL_LEVEL:
+    case EGL_MAX_PBUFFER_WIDTH:
+    case EGL_MAX_PBUFFER_HEIGHT:
+    case EGL_MAX_PBUFFER_PIXELS:
+    case EGL_MAX_SWAP_INTERVAL:
+    case EGL_MIN_SWAP_INTERVAL:
+    case EGL_RENDERABLE_TYPE:
+    case EGL_NATIVE_RENDERABLE:
+    case EGL_NATIVE_VISUAL_ID:
+    case EGL_NATIVE_VISUAL_TYPE:
+    case EGL_SAMPLE_BUFFERS:
+    case EGL_SAMPLES:
+    case EGL_STENCIL_SIZE:
+    case EGL_SURFACE_TYPE:
+    case EGL_TRANSPARENT_TYPE:
+    case EGL_TRANSPARENT_RED_VALUE:
+    case EGL_TRANSPARENT_GREEN_VALUE:
+    case EGL_TRANSPARENT_BLUE_VALUE:
+    case EGL_CONFORMANT:
+        return true;
+    }
+    return false;
+}
+
+// static
+bool EglValidate::noAttribs(const EGLint* attrib) {
+    return !attrib || attrib[0] == EGL_NONE ;
+}
+
+// static
+bool EglValidate::pbufferAttribs(EGLint width,
+                                 EGLint height,
+                                 bool isTexFormatNoTex,
+                                 bool isTexTargetNoTex) {
+    if(!isTexFormatNoTex) {
+        if (!(isPowerOf2(width) && isPowerOf2(height))) {
+            return false;
+        }
+    }
+    return isTexFormatNoTex == isTexTargetNoTex ;
+}
+
+// static
+bool EglValidate::releaseContext(EGLContext ctx,
+                                 EGLSurface s1,
+                                 EGLSurface s2) {
+    return (ctx == EGL_NO_CONTEXT) &&
+           (s1 == EGL_NO_SURFACE)  &&
+           (s2 == EGL_NO_SURFACE);
+}
+
+// static
+bool EglValidate::badContextMatch(EGLContext ctx,
+                                  EGLSurface s1,
+                                  EGLSurface s2) {
+    return (ctx != EGL_NO_CONTEXT)
+            ? (s1 == EGL_NO_SURFACE || s2 == EGL_NO_SURFACE)
+            : (s1 != EGL_NO_SURFACE || s2 != EGL_NO_SURFACE);
+}
+
+// static
+bool EglValidate::surfaceTarget(EGLint target) {
+    return target == EGL_READ || target == EGL_DRAW;
+}
+
+// static
+bool EglValidate::engine(EGLint engine) {
+    return engine == EGL_CORE_NATIVE_ENGINE;
+}
+
+// static
+bool EglValidate::stringName(EGLint name) {
+    return name == EGL_VENDOR  ||
+           name == EGL_VERSION ||
+           name == EGL_EXTENSIONS;
+}
+
+// static
+bool EglValidate::supportedApi(EGLenum api) {
+    return api == EGL_OPENGL_ES_API;
+}