1 /* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     2  *

     3  * Permission is hereby granted, free of charge, to any person obtaining a

     4  * copy of this software and associated documentation files (the "Software"),

     5  * to deal in the Software without restriction, including without limitation

     6  * the rights to use, copy, modify, merge, publish, distribute, sublicense,

     7  * and/or sell copies of the Software, and to permit persons to whom the

     8  * Software is furnished to do so, subject to the following conditions:

     9  *

    10  * The above copyright notice and this permission notice shall be included

    11  * in all copies or substantial portions of the Software.

    12  *

    13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

    14  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

    15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

    16  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

    17  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

    18  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

    19  *

    20  * Initial Contributors:

    21  * Nokia Corporation - initial contribution.

    22  *

    23  * Contributors:

    24  *

    25  * Description:

    26  *

    27  */

    28 

    29 #include "common.h"

    30 #include "hgl.h"

    31 #include "context.h"

    32 

    33 DGLBuffer* DGLBuffer_create(GLuint name)

    34 {

    35 	DGLBuffer* buffer = malloc(sizeof(DGLBuffer));

    36 	if(buffer == NULL)

    37 	{

    38 		return NULL;

    39 	}

    40 

    41 	buffer->obj.name = name;

    42 	buffer->obj.next = NULL;

    43 

    44 	buffer->data = NULL;

    45 	buffer->size = 0;

    46 	buffer->usage = GL_STATIC_DRAW;

    47 

    48 	return buffer;

    49 }

    50 

    51 void DGLBuffer_destroy(DGLBuffer *buffer)

    52 {

    53 	DGLES2_ASSERT(buffer != NULL);

    54 	if(buffer->data != NULL)

    55 	{

    56 		free(buffer->data);

    57 		buffer->data = NULL;

    58 	}

    59 	free(buffer);

    60 }

    61 

    62 GL_APICALL_BUILD void GL_APIENTRY glBindBuffer(GLenum target, GLuint buffer)

    63 {

    64 	DGLES2_ENTER();

    65 

    66 	DGLContext_getHostError(ctx);

    67 	

    68 	// The buffers are stored in both the wrapper and host.

    69 	ctx->hgl.BindBuffer(target, buffer);

    70 

    71 	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)

    72 	{

    73 		if(target == GL_ARRAY_BUFFER)

    74 		{

    75 			if(!DGLContext_bindBuffer(ctx, buffer))

    76 			{

    77 				DGLES2_ERROR(GL_OUT_OF_MEMORY);

    78 			}

    79 		}

    80 		else

    81 		{

    82 			DGLES2_ERROR_IF(target != GL_ELEMENT_ARRAY_BUFFER, GL_INVALID_ENUM);

    83 		}

    84 	}

    85 

    86 	DGLES2_LEAVE();

    87 }

    88 

    89 GL_APICALL_BUILD void GL_APIENTRY glBufferData(GLenum target, GLsizeiptr size, const void* data, GLenum usage)

    90 {

    91 	DGLES2_ENTER();

    92 	DGLES2_ERROR_IF(size < 0, GL_INVALID_VALUE);

    93 	DGLES2_ERROR_IF(usage != GL_STATIC_DRAW && usage != GL_DYNAMIC_DRAW && usage != GL_STREAM_DRAW, GL_INVALID_ENUM);

    94 	

    95 	DGLContext_getHostError(ctx);

    96 

    97 	// The buffers are stored in both the wrapper and host.

    98 	ctx->hgl.BufferData(target, size, data, usage);

    99 

   100 	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)

   101 	{

   102 		if(target == GL_ARRAY_BUFFER)

   103 		{

   104 			DGLBuffer* buffer;

   105 

   106 			DGLES2_ERROR_IF(ctx->buffer_binding == 0, GL_INVALID_OPERATION);

   107 			

   108 			buffer = DGLContext_findBuffer(ctx, ctx->buffer_binding);

   109 			DGLES2_ASSERT(buffer != NULL);

   110 			

   111 			if(buffer->data != NULL)

   112 			{

   113 				// Delete old data.

   114 				free(buffer->data);

   115 			}

   116 

   117 			buffer->data = malloc(size);

   118 			if(buffer->data == NULL)

   119 			{

   120 				DGLES2_ERROR(GL_OUT_OF_MEMORY);

   121 			}

   122 

   123 			if(data != NULL)

   124 			{

   125 				// Copy new data.

   126 				memcpy(buffer->data, data, size);

   127 			}

   128 

   129 			buffer->size = size;

   130 			buffer->usage = usage;

   131 		}

   132 		else

   133 		{

   134 			DGLES2_ERROR_IF(target != GL_ELEMENT_ARRAY_BUFFER, GL_INVALID_ENUM);

   135 		}

   136 	}

   137 

   138 	DGLES2_LEAVE();

   139 }

   140 

   141 GL_APICALL_BUILD void GL_APIENTRY glBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, const void* data)

   142 {

   143 	DGLES2_ENTER();

   144 	DGLES2_ERROR_IF(offset < 0, GL_INVALID_VALUE);

   145 	DGLES2_ERROR_IF(size < 0, GL_INVALID_VALUE);

   146 	

   147 	DGLContext_getHostError(ctx);

   148 

   149 	// The buffers are stored in both the wrapper and host.

   150 	ctx->hgl.BufferSubData(target, offset, size, data);

   151 

   152 	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)

   153 	{

   154 		if(target == GL_ARRAY_BUFFER)

   155 		{

   156 			DGLBuffer* buffer;

   157 

   158 			DGLES2_ERROR_IF(target != GL_ARRAY_BUFFER, GL_INVALID_ENUM);

   159 			DGLES2_ERROR_IF(ctx->buffer_binding == 0, GL_INVALID_OPERATION);

   160 

   161 			buffer = DGLContext_findBuffer(ctx, ctx->buffer_binding);

   162 			DGLES2_ASSERT(buffer != NULL);

   163 

   164 			memcpy((char*)buffer->data + offset, data, size);

   165 		}

   166 		else

   167 		{

   168 			DGLES2_ERROR_IF(target != GL_ELEMENT_ARRAY_BUFFER, GL_INVALID_ENUM);

   169 		}

   170 	}

   171 

   172 	DGLES2_LEAVE();

   173 }

   174 

   175 GL_APICALL_BUILD void GL_APIENTRY glDeleteBuffers(GLsizei n, const GLuint* buffers)

   176 {

   177 	DGLES2_ENTER();

   178 	DGLES2_ERROR_IF(n < 0, GL_INVALID_VALUE);

   179 	

   180 	DGLContext_getHostError(ctx);

   181 

   182 	// The buffers are stored in both the wrapper and host.

   183 	ctx->hgl.DeleteBuffers(n, buffers);

   184 

   185 	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)

   186 	{

   187 		int i;

   188 		for(i = 0; i < n; i++)

   189 		{

   190 			DGLContext_destroyBuffer(ctx, buffers[i]);

   191 		}

   192 	}

   193 

   194 	DGLES2_LEAVE();

   195 }

   196 

   197 

   198 GL_APICALL_BUILD void GL_APIENTRY glGenBuffers(GLsizei n, GLuint* buffers)

   199 {

   200 	DGLES2_ENTER();

   201 	DGLES2_ERROR_IF(n < 0, GL_INVALID_VALUE);

   202 

   203 	// The buffers are stored in both the wrapper and host.

   204 	// Let the host come up with free buffer names. 

   205 	ctx->hgl.GenBuffers(n, buffers);

   206 

   207 	DGLES2_LEAVE();

   208 }

   209 

   210 GL_APICALL_BUILD void GL_APIENTRY glGetBufferParameteriv(GLenum target, GLenum pname, GLint* params)

   211 {

   212 	DGLES2_ENTER();

   213 	DGLES2_ERROR_IF(pname != GL_BUFFER_USAGE && pname != GL_BUFFER_SIZE, GL_INVALID_ENUM);

   214 	ctx->hgl.GetBufferParameteriv(target, pname, params);

   215 	DGLES2_LEAVE();

   216 }

   217 

   218 GL_APICALL_BUILD GLboolean GL_APIENTRY glIsBuffer(GLuint buffer)

   219 {

   220 	DGLES2_ENTER_RET(GL_FALSE);

   221 	DGLES2_LEAVE_RET(ctx->hgl.IsBuffer(buffer));

   222 }