mirror of https://github.com/axmolengine/axmol.git
377 lines
10 KiB
C++
377 lines
10 KiB
C++
/****************************************************************************
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Copyright 2012 cocos2d-x.org
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Copyright 2011 Jeff Lamarche
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Copyright 2012 Goffredo Marocchi
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Copyright 2012 Ricardo Quesada
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN false EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "CCGLProgram.h"
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#include "ccGLStateCache.h"
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#include "ccMacros.h"
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#include "CCFileUtils.h"
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#include "support/data_support/uthash.h"
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#include "CCString.h"
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// extern
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#include "kazmath/GL/matrix.h"
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#include "kazmath/kazmath.h"
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NS_CC_BEGIN
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typedef struct _hashUniformEntry
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{
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GLvoid* value; // value
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unsigned int location; // Key
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UT_hash_handle hh; // hash entry
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} tHashUniformEntry;
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CCGLProgram::CCGLProgram()
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: m_uProgram(0)
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, m_uVertShader(0)
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, m_uFragShader(0)
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, m_pHashForUniforms(NULL)
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{
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memset(m_uUniforms, 0, sizeof(m_uUniforms));
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}
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CCGLProgram::~CCGLProgram()
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{
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CCLOGINFO("cocos2d: deallocing 0x%X", this);
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// there is no need to delete the shaders. They should have been already deleted.
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CCAssert( m_uVertShader == 0, "Vertex Shaders should have been already deleted");
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CCAssert( m_uFragShader == 0, "Vertex Shaders should have been already deleted");
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if (m_uProgram)
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{
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ccGLDeleteProgram(m_uProgram);
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}
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tHashUniformEntry *current_element, *tmp;
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// Purge uniform hash
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HASH_ITER(hh, m_pHashForUniforms, current_element, tmp) {
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HASH_DEL(m_pHashForUniforms, current_element);
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free(current_element->value);
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free(current_element);
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}
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}
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bool CCGLProgram::initWithVertexShaderByteArray(const GLchar* vShaderByteArray, const GLchar* fShaderByteArray)
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{
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m_uProgram = glCreateProgram();
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m_uVertShader = m_uFragShader = 0;
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if( vShaderByteArray ) {
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if (!compileShader(&m_uVertShader, GL_VERTEX_SHADER, vShaderByteArray)) {
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CCLOG("cocos2d: ERROR: Failed to compile vertex shader");
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}
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}
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// Create and compile fragment shader
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if( fShaderByteArray ) {
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if (!compileShader(&m_uFragShader, GL_FRAGMENT_SHADER, fShaderByteArray)) {
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CCLOG("cocos2d: ERROR: Failed to compile fragment shader");
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}
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}
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if( m_uVertShader ) {
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glAttachShader(m_uProgram, m_uVertShader);
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}
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if( m_uFragShader ) {
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glAttachShader(m_uProgram, m_uFragShader);
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}
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m_pHashForUniforms = NULL;
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return true;
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}
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bool CCGLProgram::initWithVertexShaderFilename(const char* vShaderFilename, const char* fShaderFilename)
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{
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const GLchar * vertexSource = (GLchar*) CCString::stringWithContentsOfFile(CCFileUtils::fullPathFromRelativePath(vShaderFilename))->getCString();
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const GLchar * fragmentSource = (GLchar*) CCString::stringWithContentsOfFile(CCFileUtils::fullPathFromRelativePath(fShaderFilename))->getCString();
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return initWithVertexShaderByteArray(vertexSource, fragmentSource);
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}
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const char* CCGLProgram::description()
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{
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return CCString::stringWithFormat("<CCGLProgram = %08X | Program = %i, VertexShader = %i, FragmentShader = %i>", this, m_uProgram, m_uVertShader, m_uFragShader)->getCString();
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}
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bool CCGLProgram::compileShader(GLuint * shader, GLenum type, const GLchar* source)
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{
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GLint status;
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if (!source)
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return false;
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*shader = glCreateShader(type);
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glShaderSource(*shader, 1, &source, NULL);
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glCompileShader(*shader);
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glGetShaderiv(*shader, GL_COMPILE_STATUS, &status);
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if( ! status ) {
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if( type == GL_VERTEX_SHADER )
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CCLOG("cocos2d: %s", vertexShaderLog() );
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else
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CCLOG("cocos2d: %s", fragmentShaderLog() );
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}
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return ( status == GL_TRUE );
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}
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void CCGLProgram::addAttribute(const char* attributeName, GLuint index)
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{
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glBindAttribLocation(m_uProgram,
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index,
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attributeName);
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}
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void CCGLProgram::updateUniforms()
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{
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// Since sample most probably won't change, set it to 0 now.
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m_uUniforms[kCCUniformMVPMatrix] = glGetUniformLocation(m_uProgram, kCCUniformMVPMatrix_s);
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m_uUniforms[kCCUniformSampler] = glGetUniformLocation(m_uProgram, kCCUniformSampler_s);
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this->use();
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this->setUniformLocationWith1i( m_uUniforms[kCCUniformSampler], 0 );
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}
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bool CCGLProgram::link()
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{
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glLinkProgram(m_uProgram);
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#if DEBUG
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GLint status;
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glValidateProgram(m_uProgram);
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glGetProgramiv(m_uProgram, GL_LINK_STATUS, &status);
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if (status == GL_FALSE) {
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CCLOG("cocos2d: ERROR: Failed to link program: %i", m_uProgram);
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if( m_uVertShader )
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glDeleteShader( m_uVertShader );
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if( m_uFragShader )
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glDeleteShader( m_uFragShader );
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ccGLDeleteProgram( m_uProgram );
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m_uVertShader = m_uFragShader = m_uProgram = 0;
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return false;
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}
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#endif
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if (m_uVertShader)
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glDeleteShader(m_uVertShader);
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if (m_uFragShader)
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glDeleteShader(m_uFragShader);
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m_uVertShader = m_uFragShader = 0;
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return true;
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}
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void CCGLProgram::use()
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{
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ccGLUseProgram(m_uProgram);
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}
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const char* CCGLProgram::logForOpenGLObject(GLuint object, GLInfoFunction infoFunc, GLLogFunction logFunc)
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{
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GLint logLength = 0, charsWritten = 0;
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infoFunc(object, GL_INFO_LOG_LENGTH, &logLength);
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if (logLength < 1)
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return 0;
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char *logBytes = (char*)malloc(logLength);
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logFunc(object, logLength, &charsWritten, logBytes);
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CCString* log = CCString::stringWithCString(logBytes);
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free(logBytes);
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return log->getCString();
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}
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const char* CCGLProgram::vertexShaderLog()
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{
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return this->logForOpenGLObject(m_uVertShader, (GLInfoFunction)&glGetShaderiv, (GLLogFunction)&glGetShaderInfoLog);
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}
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const char* CCGLProgram::fragmentShaderLog()
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{
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return this->logForOpenGLObject(m_uFragShader, (GLInfoFunction)&glGetShaderiv, (GLLogFunction)&glGetShaderInfoLog);
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}
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const char* CCGLProgram::programLog()
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{
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return this->logForOpenGLObject(m_uProgram, (GLInfoFunction)&glGetProgramiv, (GLLogFunction)&glGetProgramInfoLog);
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}
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// Uniform cache
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bool CCGLProgram::updateUniformLocation(unsigned int location, GLvoid* data, unsigned int bytes)
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{
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bool updated = true;
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tHashUniformEntry *element = NULL;
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HASH_FIND_INT(m_pHashForUniforms, &location, element);
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if( ! element ) {
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element = (tHashUniformEntry*)malloc( sizeof(*element) );
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// key
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element->location = location;
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// value
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element->value = malloc( bytes );
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memcpy(element->value, data, bytes );
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HASH_ADD_INT(m_pHashForUniforms, location, element);
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}
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else
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{
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if( memcmp( element->value, data, bytes) == 0 )
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updated = false;
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else
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memcpy( element->value, data, bytes );
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}
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return updated;
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}
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void CCGLProgram::setUniformLocationWith1i(unsigned int location, GLint i1)
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{
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bool updated = updateUniformLocation(location, &i1, sizeof(i1)*1);
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if( updated )
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{
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glUniform1i( (GLint)location, i1);
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}
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}
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void CCGLProgram::setUniformLocationWith1f(unsigned int location, GLfloat f1)
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{
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bool updated = updateUniformLocation(location, &f1, sizeof(f1)*1);
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if( updated )
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{
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glUniform1f( (GLint)location, f1);
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}
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}
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void CCGLProgram::setUniformLocationWith2f(unsigned int location, GLfloat f1, GLfloat f2)
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{
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GLfloat floats[2] = {f1,f2};
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bool updated = updateUniformLocation(location, floats, sizeof(floats));
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if( updated )
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{
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glUniform2f( (GLint)location, f1, f2);
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}
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}
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void CCGLProgram::setUniformLocationWith3f(unsigned int location, GLfloat f1, GLfloat f2, GLfloat f3)
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{
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GLfloat floats[3] = {f1,f2,f3};
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bool updated = updateUniformLocation(location, floats, sizeof(floats));
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if( updated )
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{
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glUniform3f( (GLint)location, f1, f2, f3);
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}
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}
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void CCGLProgram::setUniformLocationWith4f(unsigned int location, GLfloat f1, GLfloat f2, GLfloat f3, GLfloat f4)
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{
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GLfloat floats[4] = {f1,f2,f3,f4};
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bool updated = updateUniformLocation(location, floats, sizeof(floats));
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if( updated )
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{
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glUniform4f( (GLint)location, f1, f2, f3,f4);
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}
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}
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void CCGLProgram::setUniformLocationWith2fv(unsigned int location, GLfloat* floats, unsigned int numberOfArrays)
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{
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bool updated = updateUniformLocation(location, floats, sizeof(float)*2*numberOfArrays);
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if( updated )
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{
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glUniform2fv( (GLint)location, (GLsizei)numberOfArrays, floats );
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}
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}
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void CCGLProgram::setUniformLocationWith3fv(unsigned int location, GLfloat* floats, unsigned int numberOfArrays)
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{
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bool updated = updateUniformLocation(location, floats, sizeof(float)*3*numberOfArrays);
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if( updated )
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{
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glUniform3fv( (GLint)location, (GLsizei)numberOfArrays, floats );
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}
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}
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void CCGLProgram::setUniformLocationWith4fv(unsigned int location, GLfloat* floats, unsigned int numberOfArrays)
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{
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bool updated = updateUniformLocation(location, floats, sizeof(float)*4*numberOfArrays);
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if( updated )
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{
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glUniform4fv( (GLint)location, (GLsizei)numberOfArrays, floats );
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}
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}
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void CCGLProgram::setUniformLocationwithMatrix4fv(unsigned int location, GLfloat* matrixArray, unsigned int numberOfMatrices)
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{
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bool updated = updateUniformLocation(location, matrixArray, sizeof(float)*16*numberOfMatrices);
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if( updated )
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{
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glUniformMatrix4fv( (GLint)location, (GLsizei)numberOfMatrices, GL_FALSE, matrixArray);
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}
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}
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void CCGLProgram::setUniformForModelViewProjectionMatrix()
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{
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kmMat4 matrixP;
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kmMat4 matrixMV;
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kmMat4 matrixMVP;
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kmGLGetMatrix(KM_GL_PROJECTION, &matrixP );
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kmGLGetMatrix(KM_GL_MODELVIEW, &matrixMV );
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kmMat4Multiply(&matrixMVP, &matrixP, &matrixMV);
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setUniformLocationwithMatrix4fv(m_uUniforms[kCCUniformMVPMatrix], matrixMVP.mat, 1);
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}
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NS_CC_END
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