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      1 /*
      2 * Copyright (C) 2011 The Android Open Source Project
      3 *
      4 * Licensed under the Apache License, Version 2.0 (the "License");
      5 * you may not use this file except in compliance with the License.
      6 * You may obtain a copy of the License at
      7 *
      8 * http://www.apache.org/licenses/LICENSE-2.0
      9 *
     10 * Unless required by applicable law or agreed to in writing, software
     11 * distributed under the License is distributed on an "AS IS" BASIS,
     12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 * See the License for the specific language governing permissions and
     14 * limitations under the License.
     15 */
     16 #include "EglValidate.h"
     17 #include <GLcommon/GLutils.h>
     18 
     19 bool EglValidate::confAttrib(EGLint attrib) {
     20     switch(attrib) {
     21     case EGL_BUFFER_SIZE:
     22     case EGL_RED_SIZE:
     23     case EGL_GREEN_SIZE:
     24     case EGL_BLUE_SIZE:
     25     case EGL_ALPHA_SIZE:
     26     case EGL_BIND_TO_TEXTURE_RGB:
     27     case EGL_BIND_TO_TEXTURE_RGBA:
     28     case EGL_CONFIG_CAVEAT:
     29     case EGL_CONFIG_ID:
     30     case EGL_DEPTH_SIZE:
     31     case EGL_LEVEL:
     32     case EGL_MAX_PBUFFER_WIDTH:
     33     case EGL_MAX_PBUFFER_HEIGHT:
     34     case EGL_MAX_PBUFFER_PIXELS:
     35     case EGL_MAX_SWAP_INTERVAL:
     36     case EGL_MIN_SWAP_INTERVAL:
     37     case EGL_RENDERABLE_TYPE:
     38     case EGL_NATIVE_RENDERABLE:
     39     case EGL_NATIVE_VISUAL_ID:
     40     case EGL_NATIVE_VISUAL_TYPE:
     41     case EGL_SAMPLE_BUFFERS:
     42     case EGL_SAMPLES:
     43     case EGL_STENCIL_SIZE:
     44     case EGL_SURFACE_TYPE:
     45     case EGL_TRANSPARENT_TYPE:
     46     case EGL_TRANSPARENT_RED_VALUE:
     47     case EGL_TRANSPARENT_GREEN_VALUE:
     48     case EGL_TRANSPARENT_BLUE_VALUE:
     49     case EGL_CONFORMANT:
     50         return true;
     51     }
     52     return false;
     53 }
     54 
     55 bool EglValidate::noAttribs(const EGLint* attrib) {
     56     return !attrib || attrib[0] == EGL_NONE ;
     57 }
     58 
     59 bool EglValidate::pbufferAttribs(EGLint width,EGLint height,bool isTexFormatNoTex,bool isTexTargetNoTex) {
     60     if(!isTexFormatNoTex) {
     61       if (!(isPowerOf2(width) && isPowerOf2(height))) return false;
     62     }
     63     return isTexFormatNoTex == isTexTargetNoTex ;
     64 }
     65 
     66 bool EglValidate::releaseContext(EGLContext ctx,EGLSurface s1,EGLSurface s2) {
     67     return (ctx == EGL_NO_CONTEXT) &&
     68            (s1 == EGL_NO_SURFACE)  &&
     69            (s2 == EGL_NO_SURFACE);
     70 }
     71 
     72 bool EglValidate::badContextMatch(EGLContext ctx,EGLSurface s1,EGLSurface s2) {
     73     return ctx != EGL_NO_CONTEXT ? (s1 == EGL_NO_SURFACE || s2 == EGL_NO_SURFACE):
     74                                    (s1 != EGL_NO_SURFACE || s2 != EGL_NO_SURFACE);
     75 }
     76 
     77 bool EglValidate::surfaceTarget(EGLint target) {
     78     return target == EGL_READ || target == EGL_DRAW;
     79 }
     80 
     81 bool EglValidate::engine(EGLint engine) {
     82     return engine == EGL_CORE_NATIVE_ENGINE;
     83 }
     84 
     85 bool EglValidate::stringName(EGLint name) {
     86     return name == EGL_VENDOR  ||
     87            name == EGL_VERSION ||
     88            name == EGL_EXTENSIONS;
     89 }
     90 
     91 bool EglValidate::supportedApi(EGLenum api) {
     92     return api == EGL_OPENGL_ES_API;
     93 }
     94