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axmol/cocos/scripting/js-bindings/manual/jsb_opengl_manual.cpp

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/*
* Copyright (c) 2013 Zynga Inc.
* Copyright (c) 2013-2014 Chukong Technologies Inc.
*
* 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.
*/
#include "js_bindings_config.h"
#ifdef JSB_INCLUDE_OPENGL
#include "jsb_opengl_manual.h"
#include "js_manual_conversions.h"
#include "js_bindings_core.h"
#include "jsb_opengl_functions.h"
// Helper functions that link "glGenXXXs" (OpenGL ES 2.0 spec), with "gl.createXXX" (WebGL spec)
bool JSB_glGenTextures(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 0, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
GLuint texture;
glGenTextures(1, &texture);
args.rval().set(INT_TO_JSVAL(texture));
return true;
}
bool JSB_glGenBuffers(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 0, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
GLuint buffer;
glGenBuffers(1, &buffer);
args.rval().set(INT_TO_JSVAL(buffer));
return true;
}
bool JSB_glGenRenderbuffers(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 0, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
GLuint renderbuffers;
glGenRenderbuffers(1, &renderbuffers);
args.rval().set(INT_TO_JSVAL(renderbuffers));
return true;
}
bool JSB_glGenFramebuffers(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 0, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
GLuint framebuffers;
glGenFramebuffers(1, &framebuffers);
args.rval().set(INT_TO_JSVAL(framebuffers));
return true;
}
bool JSB_glDeleteTextures(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 1, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
glDeleteTextures(1, &arg0);
args.rval().set(JSVAL_VOID);
return true;
}
bool JSB_glDeleteBuffers(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 1, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
glDeleteBuffers(1, &arg0);
args.rval().set(JSVAL_VOID);
return true;
}
bool JSB_glDeleteRenderbuffers(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 1, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
glDeleteRenderbuffers(1, &arg0);
args.rval().set(JSVAL_VOID);
return true;
}
bool JSB_glDeleteFramebuffers(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 1, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
glDeleteFramebuffers(1, &arg0);
args.rval().set(JSVAL_VOID);
return true;
}
bool JSB_glShaderSource(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 2, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0; const char *arg1;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
ok &= jsval_to_charptr(cx, args.get(1), &arg1);
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
glShaderSource(arg0, 1, &arg1, NULL);
args.rval().set(JSVAL_VOID);
return true;
}
bool JSB_glGetShaderiv(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 2, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0, arg1;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
ok &= jsval_to_uint( cx, args.get(1), &arg1 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
GLint ret;
glGetShaderiv(arg0, arg1, &ret);
args.rval().set(INT_TO_JSVAL(ret));
return true;
}
bool JSB_glGetProgramiv(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 2, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0, arg1;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
ok &= jsval_to_uint( cx, args.get(1), &arg1 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
GLint ret;
glGetProgramiv(arg0, arg1, &ret);
args.rval().set(INT_TO_JSVAL(ret));
return true;
}
bool JSB_glGetProgramInfoLog(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 1, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
GLsizei length;
glGetProgramiv(arg0, GL_INFO_LOG_LENGTH, &length);
GLchar* src = new GLchar[length];
glGetProgramInfoLog(arg0, length, NULL, src);
args.rval().set(charptr_to_jsval(cx, src));
CC_SAFE_DELETE_ARRAY(src);
return true;
}
// DOMString? getShaderInfoLog(WebGLShader? shader);
bool JSB_glGetShaderInfoLog(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 1, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
GLsizei length;
glGetShaderiv(arg0, GL_INFO_LOG_LENGTH, &length);
GLchar* src = new GLchar[length];
glGetShaderInfoLog(arg0, length, NULL, src);
args.rval().set(charptr_to_jsval(cx, src));
CC_SAFE_DELETE_ARRAY(src);
return true;
}
// DOMString? getShaderSource(WebGLShader? shader);
bool JSB_glGetShaderSource(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 1, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
GLsizei length;
glGetShaderiv(arg0, GL_SHADER_SOURCE_LENGTH, &length);
GLchar* src = new GLchar[length];
glGetShaderSource(arg0, length, NULL, src);
args.rval().set(charptr_to_jsval(cx, src));
CC_SAFE_DELETE_ARRAY(src);
return true;
}
// interface WebGLActiveInfo {
// readonly attribute GLint size;
// readonly attribute GLenum type;
// readonly attribute DOMString name;
// WebGLActiveInfo? getActiveAttrib(WebGLProgram? program, GLuint index);
bool JSB_glGetActiveAttrib(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 2, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0, arg1;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
ok &= jsval_to_uint( cx, args.get(1), &arg1 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
GLsizei length;
glGetProgramiv(arg0, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &length);
GLchar* buffer = new GLchar[length];
GLint size = -1;
GLenum type = -1;
glGetActiveAttrib(arg0, arg1, length, NULL, &size, &type, buffer);
jsval retval = JSVAL_VOID;
JS::RootedObject object(cx, JS_NewObject(cx, NULL, JS::NullPtr(), JS::NullPtr() ));
JSB_PRECONDITION2(ok, cx, false, "Error creating JS Object");
if (!JS_DefineProperty(cx, object, "size", (int32_t)size, JSPROP_ENUMERATE | JSPROP_PERMANENT) ||
!JS_DefineProperty(cx, object, "type", (int32_t)type, JSPROP_ENUMERATE | JSPROP_PERMANENT) ||
!JS_DefineProperty(cx, object, "name", JS::RootedValue(cx, charptr_to_jsval(cx, buffer)), JSPROP_ENUMERATE | JSPROP_PERMANENT) )
return false;
retval = OBJECT_TO_JSVAL(object);
args.rval().set(retval);
CC_SAFE_DELETE_ARRAY(buffer);
return true;
}
// interface WebGLActiveInfo {
// readonly attribute GLint size;
// readonly attribute GLenum type;
// readonly attribute DOMString name;
// };
// WebGLActiveInfo? getActiveUniform(WebGLProgram? program, GLuint index);
bool JSB_glGetActiveUniform(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 2, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0, arg1;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
ok &= jsval_to_uint( cx, args.get(1), &arg1 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
GLsizei length;
glGetProgramiv(arg0, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &length);
GLchar* buffer = new GLchar[length];
GLint size = -1;
GLenum type = -1;
glGetActiveUniform(arg0, arg1, length, NULL, &size, &type, buffer);
jsval retval = JSVAL_VOID;
JS::RootedObject object(cx, JS_NewObject(cx, NULL, JS::NullPtr(), JS::NullPtr() ));
JSB_PRECONDITION2(ok, cx, false, "Error creating JS Object");
if (!JS_DefineProperty(cx, object, "size", (int32_t)size, JSPROP_ENUMERATE | JSPROP_PERMANENT) ||
!JS_DefineProperty(cx, object, "type", (int32_t)type, JSPROP_ENUMERATE | JSPROP_PERMANENT) ||
!JS_DefineProperty(cx, object, "name", JS::RootedValue(cx, charptr_to_jsval(cx, buffer)), JSPROP_ENUMERATE | JSPROP_PERMANENT) )
return false;
retval = OBJECT_TO_JSVAL(object);
args.rval().set(retval);
CC_SAFE_DELETE_ARRAY(buffer);
return true;
}
// sequence<WebGLShader>? getAttachedShaders(WebGLProgram? program);
bool JSB_glGetAttachedShaders(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 1, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
GLsizei length;
glGetProgramiv(arg0, GL_ATTACHED_SHADERS, &length);
GLuint* buffer = new GLuint[length];
memset(buffer, 0, length * sizeof(GLuint));
//Fix bug 2448, it seems that glGetAttachedShaders will crash if we send NULL to the third parameter (eg Windows), same as in lua binding
GLsizei realShaderCount = 0;
glGetAttachedShaders(arg0, length, &realShaderCount, buffer);
JS::RootedObject jsobj(cx, JS_NewArrayObject(cx, length));
JSB_PRECONDITION2(jsobj, cx, false, "Error creating JS Object");
for( int i=0; i<length; i++) {
JS::RootedValue e(cx, INT_TO_JSVAL(buffer[i]));
JS_SetElement(cx, jsobj, i, e );
}
args.rval().set(OBJECT_TO_JSVAL(jsobj));
CC_SAFE_DELETE_ARRAY(buffer);
return true;
}
// sequence<DOMString>? getSupportedExtensions();
bool JSB_glGetSupportedExtensions(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 0, cx, false, "Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
const GLubyte *extensions = glGetString(GL_EXTENSIONS);
JS::RootedObject jsobj(cx, JS_NewArrayObject(cx, 0));
JSB_PRECONDITION2(jsobj, cx, false, "Error creating JS Object");
// copy, to be able to add '\0'
size_t len = strlen((char*)extensions);
GLubyte* copy = new GLubyte[len+1];
strncpy((char*)copy, (const char*)extensions, len );
int start_extension=0;
int element=0;
for( size_t i=0; i<len+1; i++) {
if( copy[i]==' ' || copy[i]==',' || i==len ) {
copy[i] = 0;
JS::RootedValue str(cx, charptr_to_jsval(cx, (const char*)&copy[start_extension]));
JS_SetElement(cx, jsobj, element++, str );
start_extension = i+1;
i++;
}
}
args.rval().set(OBJECT_TO_JSVAL(jsobj));
CC_SAFE_DELETE_ARRAY(copy);
return true;
}
// any getTexParameter(GLenum target, GLenum pname);
bool JSB_glGetTexParameterfv(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 2, cx, false, "JSB_glGetTexParameterfv: Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0, arg1;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
ok &= jsval_to_uint( cx, args.get(1), &arg1 );
JSB_PRECONDITION2(ok, cx, false, "JSB_glGetTexParameterfv: Error processing arguments");
GLfloat param;
glGetTexParameterfv(arg0, arg1, &param);
args.rval().set(DOUBLE_TO_JSVAL(param));
return true;
}
// any getUniform(WebGLProgram? program, WebGLUniformLocation? location);
bool JSB_glGetUniformfv(JSContext *cx, uint32_t argc, jsval *vp)
{
JSB_PRECONDITION2( argc == 2, cx, false, "JSB_glGetUniformfv: Invalid number of arguments" );
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
uint32_t arg0, arg1;
ok &= jsval_to_uint( cx, args.get(0), &arg0 );
ok &= jsval_to_uint( cx, args.get(1), &arg1 );
JSB_PRECONDITION2(ok, cx, false, "JSB_glGetUniformfv: Error processing arguments");
GLint activeUniforms;
glGetProgramiv(arg0, GL_ACTIVE_UNIFORMS, &activeUniforms);
GLsizei length;
glGetProgramiv(arg0, GL_ACTIVE_UNIFORM_MAX_LENGTH, &length);
GLchar* namebuffer = new GLchar[length+1];
GLint size = -1;
GLenum type = -1;
bool isLocationFound = false;
for(int i = 0; i < activeUniforms; ++i)
{
glGetActiveUniform(arg0, i, length, NULL, &size, &type, namebuffer);
if(arg1 == glGetUniformLocation(arg0, namebuffer))
{
isLocationFound = true;
break;
}
}
if(!isLocationFound)
{
size = -1;
type = -1;
}
CC_SAFE_DELETE_ARRAY(namebuffer);
int usize = 0;
int utype = 0;
switch(type) {
// float
case GL_FLOAT:
usize = 1;
utype = GL_FLOAT;
break;
case GL_FLOAT_MAT2:
usize = 2 * 2;
utype = GL_FLOAT;
break;
case GL_FLOAT_MAT3:
usize = 3 * 3;
utype = GL_FLOAT;
break;
case GL_FLOAT_MAT4:
usize = 4 * 4;
utype = GL_FLOAT;
break;
case GL_FLOAT_VEC2:
usize = 2;
utype = GL_FLOAT;
break;
case GL_FLOAT_VEC3:
usize = 3;
utype = GL_FLOAT;
break;
case GL_FLOAT_VEC4:
usize = 4;
utype = GL_FLOAT;
break;
// int
case GL_INT:
usize = 1;
utype = GL_INT;
break;
case GL_INT_VEC2:
usize = 1;
utype = GL_INT;
break;
case GL_INT_VEC3:
usize = 1;
utype = GL_INT;
break;
case GL_INT_VEC4:
usize = 1;
utype = GL_INT;
break;
default:
JSB_PRECONDITION2(false, cx, false, "JSB_glGetUniformfv: Uniform Type not supported");
}
JSObject *typedArray = NULL;
if( utype == GL_FLOAT) {
// FIXME: glew on windows will cause array overflow after invoking glGetUniformfv.
// It seems that glGetUniformfv re-assign the memeroy with a wrong size which is 4x than we pass in.
// For temporary solution, we allocate 4x array.
GLfloat* param = new GLfloat[usize*4];
glGetUniformfv(arg0, arg1, param);
typedArray = JS_NewFloat32Array(cx, usize);
float *buffer = (float*)JS_GetArrayBufferViewData(typedArray);
memcpy( buffer, param, sizeof(float) * usize);
CC_SAFE_DELETE_ARRAY(param);
} else if( utype == GL_INT ) {
// FIXME: glew on windows will cause array overflow after invoking glGetUniformfv.
// It seems that glGetUniformfv re-assign the memeroy with a wrong size which is 4x than we pass in.
// For temporary solution, we allocate 4x array.
GLint* param = new GLint[usize*4];
glGetUniformiv(arg0, arg1, param);
typedArray = JS_NewInt32Array(cx, usize);
GLint *buffer = (GLint*)JS_GetArrayBufferViewData(typedArray);
memcpy( buffer, param, sizeof(GLint) * usize);
CC_SAFE_DELETE_ARRAY(param);
}
args.rval().set(OBJECT_TO_JSVAL(typedArray));
return true;
}
#endif // JSB_INCLUDE_OPENGL
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