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/*
* Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
*
* Contact:
* DongKyun Yun <dk77.yun@samsung.com>
* SangJin Kim <sangjin3.kim@samsung.com>
* HyunGoo Kang <hyungoo1.kang@samsung.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Contributors:
* - S-Core Co., Ltd
*
*/
#include "gl_imp.h"
#include <malloc.h>
#include <string.h>
#if ! defined(GL_BUFFER_ACCESS)
#define GL_BUFFER_ACCESS 0x88BB
#endif
#if ! defined(GL_WRITE_ONLY)
#define GL_WRITE_ONLY 0x88B9
#endif
static void INTFN(ResizeBuffer)(int n) {
if (CCV(nBuffer) <= n) {
int newSize = CCV(nBuffer);
while (newSize <= n) { newSize *= 2; }
CCV(pBufferStatus) = realloc(CCV(pBufferStatus), newSize * sizeof(GLint));
memset(CCV(pBufferStatus) + CCV(nBuffer), 0, (newSize - CCV(nBuffer)) * sizeof(GLint));
CCV(nBuffer) = newSize;
}
}
#if ALEXGL_INTERNAL_VERSION >= 110
GL_API void GL_APIENTRY EXTFN(GenBuffers)(GLsizei n, GLuint* buffers) {
int max;
int i;
FNPTR(GenBuffers)(n, buffers);
max = 0;
for (i = 0; buffers != NULL && i < n; i++) {
if (buffers[i] > max) max = buffers[i];
}
INTFN(ResizeBuffer)(max);
for (i = 0; buffers != NULL && i < n; i++) {
CCV(pBufferStatus)[buffers[i]] = ALEXGL_BUFFER_GENERATED;
}
}
#endif
#if ALEXGL_INTERNAL_VERSION >= 110
GL_API void GL_APIENTRY EXTFN(BindBuffer)(GLenum target, GLuint buffer) {
if (target != GL_ARRAY_BUFFER && target != GL_ELEMENT_ARRAY_BUFFER) {
INTFN(SetError)(GL_INVALID_ENUM);
return;
}
FNPTR(BindBuffer)(target, buffer);
INTFN(ResizeBuffer)(buffer);
CCV(pBufferStatus)[buffer] = ALEXGL_BUFFER_BOUND;
}
#endif
#if ALEXGL_INTERNAL_VERSION >= 110
GL_API void GL_APIENTRY EXTFN(DeleteBuffers)(GLsizei n, const GLuint* buffers) {
int max;
int i;
FNPTR(DeleteBuffers)(n, buffers);
max = 0;
for (i = 0; buffers != NULL && i < n; i++) {
if (buffers[i] > max) max = buffers[i];
}
INTFN(ResizeBuffer)(max);
for (i = 0; buffers != NULL && i < n; i++) {
CCV(pBufferStatus)[buffers[i]] = ALEXGL_BUFFER_NULL;
}
}
#endif
#if ALEXGL_INTERNAL_VERSION >= 110
GL_API GLboolean GL_APIENTRY EXTFN(IsBuffer)(GLuint buffer) {
register GLboolean bAnswer;
bAnswer = FNPTR(IsBuffer)(buffer);
INTFN(ResizeBuffer)(buffer);
if (bAnswer == GL_TRUE && CCV(pBufferStatus)[buffer] != ALEXGL_BUFFER_BOUND) {
bAnswer = GL_FALSE;
}
return (bAnswer == GL_FALSE) ? GL_FALSE : GL_TRUE;
}
#endif
#if ALEXGL_INTERNAL_VERSION >= 110
GL_API void GL_APIENTRY EXTFN(GetBufferParameteriv)(GLenum target, GLenum pname, GLint* params) {
if (target != GL_ARRAY_BUFFER && target != GL_ELEMENT_ARRAY_BUFFER) {
INTFN(SetError)(GL_INVALID_ENUM);
return;
}
if (pname != GL_BUFFER_SIZE && pname != GL_BUFFER_USAGE && pname != GL_BUFFER_ACCESS) {
INTFN(SetError)(GL_INVALID_ENUM);
return;
}
FNPTR(GetBufferParameteriv)(target, pname, params);
if (pname == GL_BUFFER_ACCESS && *params == GL_READ_WRITE) {
*params = GL_WRITE_ONLY;
}
}
#endif
#if ALEXGL_INTERNAL_VERSION >= 110
GL_API void GL_APIENTRY EXTFN(BufferData)(GLenum target,
GLsizeiptr size, const GLvoid* data, GLenum usage) {
if (target != GL_ARRAY_BUFFER && target != GL_ELEMENT_ARRAY_BUFFER) {
INTFN(SetError)(GL_INVALID_ENUM);
return;
}
if (usage != GL_STATIC_DRAW && usage != GL_DYNAMIC_DRAW) {
INTFN(SetError)(GL_INVALID_ENUM);
return;
}
FNPTR(BufferData)(target, size, data, usage);
}
#endif
#if ALEXGL_INTERNAL_VERSION >= 110
GL_API void GL_APIENTRY EXTFN(BufferSubData)(GLenum target,
GLintptr offset, GLsizeiptr size, const GLvoid* data) {
if (target != GL_ARRAY_BUFFER && target != GL_ELEMENT_ARRAY_BUFFER) {
INTFN(SetError)(GL_INVALID_ENUM);
return;
}
FNPTR(BufferSubData)(target, offset, size, data);
}
#endif
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