//
// Copyright (c) 2017 The Khronos Group Inc.
// 
// 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 "gl_headers.h"
#include "testBase.h"

static int test_renderbuffer_object_info( cl_context context, cl_command_queue queue,
                                          GLsizei width, GLsizei height, GLenum attachment,
                                              GLenum rbFormat, GLenum rbType,
                                           GLenum texFormat, GLenum texType,
                                          ExplicitType type, MTdata d )
{
    int error;

    // Create the GL render buffer
    glFramebufferWrapper glFramebuffer;
    glRenderbufferWrapper glRenderbuffer;
    void* tmp = CreateGLRenderbuffer( width, height, attachment, rbFormat, rbType, texFormat, texType,
                                    type, &glFramebuffer, &glRenderbuffer, &error, d, true );
    BufferOwningPtr<char> inputBuffer(tmp);
    if( error != 0 )
        return error;

    clMemWrapper image = (*clCreateFromGLRenderbuffer_ptr)(context, CL_MEM_READ_ONLY, glRenderbuffer, &error);
    test_error(error, "clCreateFromGLRenderbuffer failed");

    log_info( "- Given a GL format of %s, input type was %s, size was %d x %d\n",
              GetGLFormatName( rbFormat ),
              get_explicit_type_name( type ), (int)width, (int)height );

    // Verify the expected information here.
    return CheckGLObjectInfo(image, CL_GL_OBJECT_RENDERBUFFER, (GLuint)glRenderbuffer, rbFormat, 0);
}

int test_renderbuffer_getinfo( cl_device_id device, cl_context context, cl_command_queue queue, int numElements )
{
    GLenum attachments[] = { GL_COLOR_ATTACHMENT0_EXT };

    struct {
        GLenum rbFormat;
        GLenum rbType;
        GLenum texFormat;
        GLenum texType;
        ExplicitType type;

    } formats[] = {
        { GL_RGBA8_OES,    GL_UNSIGNED_BYTE,   GL_RGBA,    GL_UNSIGNED_BYTE,    kUChar },
        { GL_RGBA32F,      GL_FLOAT,           GL_RGBA,    GL_FLOAT,            kFloat }
    };

    size_t fmtIdx, tgtIdx;
    int error = 0;
    size_t iter = 6;
    RandomSeed seed(gRandomSeed);

    // Check if images are supported
  if (checkForImageSupport(device)) {
    log_info("Device does not support images. Skipping test.\n");
    return 0;
  }

    // Loop through a set of GL formats, testing a set of sizes against each one
    for( fmtIdx = 0; fmtIdx < sizeof( formats ) / sizeof( formats[ 0 ] ); fmtIdx++ )
    {
        for( tgtIdx = 0; tgtIdx < sizeof( attachments ) / sizeof( attachments[ 0 ] ); tgtIdx++ )
        {
            log_info( "Testing Renderbuffer object info for %s : %s : %s\n",
                GetGLFormatName( formats[ fmtIdx ].rbFormat ),
                GetGLBaseFormatName( formats[ fmtIdx ].rbFormat ),
                GetGLTypeName( formats[ fmtIdx ].type ) );

            size_t i;
            for( i = 0; i < iter; i++ )
            {
                GLsizei width = random_in_range( 16, 512, seed );
                GLsizei height = random_in_range( 16, 512, seed );

                if( test_renderbuffer_object_info( context, queue, (int)width, (int)height,
                                                   attachments[ tgtIdx ],
                                                   formats[ fmtIdx ].rbFormat,
                                                   formats[ fmtIdx ].rbType,
                                                   formats[ fmtIdx ].texFormat,
                                                   formats[ fmtIdx ].texType,
                                                   formats[ fmtIdx ].type, seed ) )
                {
                    log_error( "ERROR: Renderbuffer write test failed for GL format %s : %s\n\n",
                        GetGLFormatName( formats[ fmtIdx ].rbFormat ),
                        GetGLTypeName( formats[ fmtIdx ].rbType ) );

                    error++;
                    break;    // Skip other sizes for this combination
                }
            }
            if( i == iter )
            {
                log_info( "passed: Renderbuffer write test passed for GL format %s : %s\n\n",
                    GetGLFormatName( formats[ fmtIdx ].rbFormat ),
                    GetGLTypeName( formats[ fmtIdx ].rbType ) );

            }
        }
    }

    return error;
}