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gale/gale/renderer/openGL/openGL.cpp

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/**
* @author Edouard DUPIN
*
* @copyright 2011, Edouard DUPIN, all right reserved
*
* @license APACHE v2.0 (see license file)
*/
#include <vector>
#include <gale/debug.h>
#include <gale/renderer/openGL/openGL.h>
#include <etk/stdTools.h>
#include <mutex>
//#define DIRECT_MODE
#include <gale/renderer/openGL/openGL-include.h>
#define CHECK_ERROR_OPENGL
static void checkGlError(const char* _op, int32_t _localLine) {
#ifdef CHECK_ERROR_OPENGL
bool hasError = false;
for (GLint error = glGetError(); error; error = glGetError()) {
GALE_ERROR("after " << _op << "():" << _localLine << " glError(" << error << ")");
hasError = true;
}
if (hasError == true) {
GALE_CRITICAL("plop");
}
#endif
}
#define OPENGL_ERROR(data) do { } while (false)
//#define OPENGL_ERROR(data) GALE_ERROR(data)
#define OPENGL_WARNING(data) do { } while (false)
//#define OPENGL_WARNING(data) GALE_WARNING(data)
#define OPENGL_INFO(data) do { } while (false)
//#define OPENGL_INFO(data) GALE_INFO(data)
/**
* @brief get the draw mutex (gale render).
* @note due ti the fact that the system can be called for multiple instance, for naw we just limit the acces to one process at a time.
* @return the main inteface Mutex
*/
static std::mutex& mutexOpenGl() {
static std::mutex s_drawMutex;
return s_drawMutex;
}
std::vector<mat4> l_matrixList;
mat4 l_matrixCamera;
static uint32_t l_flagsCurrent = 0;
static uint32_t l_flagsMustBeSet = 0;
static uint32_t l_textureflags = 0;
static int32_t l_programId = 0;
void gale::openGL::lock() {
mutexOpenGl().lock();
l_matrixList.clear();
mat4 tmpMat;
l_matrixList.push_back(tmpMat);
l_matrixCamera.identity();
l_flagsCurrent = 0;
l_flagsMustBeSet = 0;
l_textureflags = 0;
l_programId = -1;
}
void gale::openGL::unLock() {
mutexOpenGl().unlock();
}
void gale::openGL::setBasicMatrix(const mat4& _newOne) {
if (l_matrixList.size()!=1) {
GALE_ERROR("matrix is not corect size in the stack : " << l_matrixList.size());
}
l_matrixList.clear();
l_matrixList.push_back(_newOne);
}
void gale::openGL::setMatrix(const mat4& _newOne) {
if (l_matrixList.size() == 0) {
GALE_ERROR("set matrix list is not corect size in the stack : " << l_matrixList.size());
l_matrixList.push_back(_newOne);
return;
}
l_matrixList[l_matrixList.size()-1] = _newOne;
}
void gale::openGL::push() {
if (l_matrixList.size() == 0) {
GALE_ERROR("set matrix list is not corect size in the stack : " << l_matrixList.size());
mat4 tmp;
l_matrixList.push_back(tmp);
return;
}
mat4 tmp = l_matrixList[l_matrixList.size()-1];
l_matrixList.push_back(tmp);
}
void gale::openGL::pop() {
if (l_matrixList.size() <= 1) {
GALE_ERROR("set matrix list is not corect size in the stack : " << l_matrixList.size());
l_matrixList.clear();
mat4 tmp;
l_matrixList.push_back(tmp);
l_matrixCamera.identity();
return;
}
l_matrixList.pop_back();
l_matrixCamera.identity();
}
const mat4& gale::openGL::getMatrix() {
if (l_matrixList.size() == 0) {
GALE_ERROR("set matrix list is not corect size in the stack : " << l_matrixList.size());
mat4 tmp;
l_matrixList.push_back(tmp);
}
return l_matrixList[l_matrixList.size()-1];
}
const mat4& gale::openGL::getCameraMatrix() {
return l_matrixCamera;
}
void gale::openGL::setCameraMatrix(const mat4& _newOne) {
l_matrixCamera = _newOne;
}
void gale::openGL::finish() {
l_programId = -1;
l_textureflags = 0;
}
void gale::openGL::flush() {
l_programId = -1;
l_textureflags = 0;
glFlush();
OPENGL_INFO("========================" );
OPENGL_INFO("== FLUSH OPEN GL ==" );
OPENGL_INFO("========================");
}
void gale::openGL::swap() {
}
void gale::openGL::setViewPort(const ivec2& _start, const ivec2& _stop) {
glViewport(_start.x(), _start.y(), _stop.x(), _stop.y());
}
void gale::openGL::setViewPort(const vec2& _start, const vec2& _stop) {
glViewport(_start.x(), _start.y(), _stop.x(), _stop.y());
}
struct correspondenceTableClear {
enum gale::openGL::clearFlag curentFlag;
GLbitfield OGlFlag;
};
static struct correspondenceTableClear basicFlagClear[] = {
{gale::openGL::clearFlag_colorBuffer, GL_COLOR_BUFFER_BIT},
{gale::openGL::clearFlag_depthBuffer, GL_DEPTH_BUFFER_BIT},
{gale::openGL::clearFlag_stencilBuffer, GL_STENCIL_BUFFER_BIT}
};
static int32_t basicFlagClearCount = sizeof(basicFlagClear) / sizeof(struct correspondenceTableClear);
void gale::openGL::clearColor(const etk::Color<float>& _color) {
glClearColor(_color.r(), _color.g(), _color.b(), _color.a());
}
void gale::openGL::clearDepth(float _value) {
glClearDepth(_value);
}
void gale::openGL::clearStencil(int32_t _value) {
glClearStencil(_value);
}
void gale::openGL::clear(uint32_t _flags) {
GLbitfield field = 0;
for (int32_t iii=0; iii<basicFlagClearCount ; iii++) {
if ( (basicFlagClear[iii].curentFlag & _flags) != 0) {
field |= basicFlagClear[iii].OGlFlag;
}
}
glClear(field);
}
std::ostream& gale::operator <<(std::ostream& _os, const enum openGL::flag& _obj) {
static std::vector<std::pair<enum openGL::flag, const char*>> list = {
std::make_pair(openGL::flag_blend, "FLAG_BLEND"),
std::make_pair(openGL::flag_clipDistanceI, "FLAG_CLIP_DISTANCE_I"),
std::make_pair(openGL::flag_colorLogigOP, "FLAG_COLOR_LOGIC_OP"),
std::make_pair(openGL::flag_cullFace, "FLAG_CULL_FACE"),
std::make_pair(openGL::flag_debugOutput, "FLAG_DEBUG_OUTPUT"),
std::make_pair(openGL::flag_debugOutputSynchronous, "flag_debugOutput_SYNCHRONOUS"),
std::make_pair(openGL::flag_depthClamp, "FLAG_DEPTH_CLAMP"),
std::make_pair(openGL::flag_depthTest, "FLAG_DEPTH_TEST"),
std::make_pair(openGL::flag_dither, "FLAG_DITHER"),
std::make_pair(openGL::flag_framebufferSRGB, "FLAG_FRAMEBUFFER_SRGB"),
std::make_pair(openGL::flag_lineSmooth, "FLAG_LINE_SMOOTH"),
std::make_pair(openGL::flag_multisample, "FLAG_MULTISAMPLE"),
std::make_pair(openGL::flag_polygonOffsetFill, "FLAG_POLYGON_OFFSET_FILL"),
std::make_pair(openGL::flag_polygonOffsetLine, "FLAG_POLYGON_OFFSET_LINE"),
std::make_pair(openGL::flag_polygonOffsetPoint, "FLAG_POLYGON_OFFSET_POINT"),
std::make_pair(openGL::flag_polygonSmooth, "FLAG_POLYGON_SMOOTH"),
std::make_pair(openGL::flag_primitiveRestart, "FLAG_PRIMITIVE_RESTART"),
std::make_pair(openGL::flag_primitiveRestartFixedIndex, "flag_primitiveRestart_FIXED_INDEX"),
std::make_pair(openGL::flag_sampleAlphaToCoverage, "FLAG_SAMPLE_ALPHA_TO_COVERAGE"),
std::make_pair(openGL::flag_sampleAlphaToOne, "FLAG_SAMPLE_ALPHA_TO_ONE"),
std::make_pair(openGL::flag_sampleCoverage, "FLAG_SAMPLE_COVERAGE"),
std::make_pair(openGL::flag_sampleShading, "FLAG_SAMPLE_SHADING"),
std::make_pair(openGL::flag_sampleMask, "FLAG_SAMPLE_MASK"),
std::make_pair(openGL::flag_scissorTest, "FLAG_SCISSOR_TEST"),
std::make_pair(openGL::flag_stencilTest, "FLAG_STENCIL_TEST"),
std::make_pair(openGL::flag_programPointSize, "FLAG_PROGRAM_POINT_SIZE"),
std::make_pair(openGL::flag_texture2D, "FLAG_TEXTURE_2D"),
std::make_pair(openGL::flag_alphaTest, "FLAG_ALPHA_TEST"),
std::make_pair(openGL::flag_fog, "FLAG_FOG")
};
_os << "{";
bool hasOne = false;
for (auto &it : list) {
if ((_obj & it.first) != 0) {
if (hasOne==true) {
_os << ",";
}
_os << it.second;
hasOne = true;
}
}
_os << "}";
return _os;
}
std::vector<std::pair<enum gale::openGL::renderMode, std::string>>& getListRenderMode() {
static std::vector<std::pair<enum gale::openGL::renderMode, std::string>> list = {
std::make_pair(gale::openGL::render_point, "POINTS"),
std::make_pair(gale::openGL::render_line, "LINES"),
std::make_pair(gale::openGL::render_lineStrip, "LINES_STRIP"),
std::make_pair(gale::openGL::render_lineLoop, "LINE_LOOP"),
std::make_pair(gale::openGL::render_triangle, "TRIANGLE"),
std::make_pair(gale::openGL::render_triangleStrip, "TRIANGLE_STRIP"),
std::make_pair(gale::openGL::render_triangleFan, "TRIANGLE_FAN"),
std::make_pair(gale::openGL::render_quad, "QUAD"),
std::make_pair(gale::openGL::render_quadStrip, "QUAD_STRIP"),
std::make_pair(gale::openGL::render_polygon, "POLYGON"),
};
return list;
}
namespace etk {
template<> std::string to_string<gale::openGL::renderMode>(const gale::openGL::renderMode& _obj) {
for (auto &it : getListRenderMode()) {
if (it.first == _obj) {
return it.second;
}
}
GALE_ERROR("Can not convert : " << static_cast<int32_t>(_obj) << " return UNKNOW");
return "UNKNOW";
}
template<> std::u32string to_u32string<gale::openGL::renderMode>(const gale::openGL::renderMode& _obj) {
return etk::to_u32string(etk::to_string(_obj));
}
template<> bool from_string<gale::openGL::renderMode>(gale::openGL::renderMode& _variableRet, const std::string& _value) {
for (auto &it : getListRenderMode()) {
if (it.second == _value) {
_variableRet = it.first;
return true;
}
}
GALE_WARNING("Can not parse : '" << _value << "' set Triangle default value");
_variableRet = gale::openGL::render_triangle;
return false;
}
template<> bool from_string<gale::openGL::renderMode>(gale::openGL::renderMode& _variableRet, const std::u32string& _value) {
return from_string(_variableRet, etk::to_string(_value));
}
};
std::ostream& gale::operator <<(std::ostream& _os, const enum openGL::renderMode& _obj) {
_os << etk::to_string(_obj);
return _os;
}
struct correspondenceTable {
enum gale::openGL::flag curentFlag;
GLenum OGlFlag;
};
static struct correspondenceTable basicFlag[] = {
{gale::openGL::flag_blend, GL_BLEND},
#if 0
!(defined(__TARGET_OS__Android) || defined(__TARGET_OS__MacOs))
{gale::openGL::flag_clipDistanceI, GL_CLIP_DISTANCE0},
{gale::openGL::flag_colorLogigOP, GL_COLOR_LOGIC_OP},
#endif
{gale::openGL::flag_cullFace, GL_CULL_FACE},
#if 0
!(defined(__TARGET_OS__Android) || defined(__TARGET_OS__MacOs))
{gale::openGL::flag_debugOutput, GL_DEBUG_OUTPUT},
{gale::openGL::flag_debugOutputSynchronous, GL_DEBUG_OUTPUT_SYNCHRONOUS},
{gale::openGL::flag_depthClamp, GL_DEPTH_CLAMP},
#endif
{gale::openGL::flag_depthTest, GL_DEPTH_TEST},
{gale::openGL::flag_dither, GL_DITHER},
#if 0
!(defined(__TARGET_OS__Android) || defined(__TARGET_OS__MacOs))
{gale::openGL::flag_framebufferSRGB, GL_FRAMEBUFFER_SRGB},
{gale::openGL::flag_lineSmooth, GL_LINE_SMOOTH},
{gale::openGL::flag_multisample, GL_MULTISAMPLE},
#endif
{gale::openGL::flag_polygonOffsetFill, GL_POLYGON_OFFSET_FILL},
#if 0
!(defined(__TARGET_OS__Android) || defined(__TARGET_OS__MacOs))
{gale::openGL::flag_polygonOffsetLine, GL_POLYGON_OFFSET_LINE},
{gale::openGL::flag_polygonOffsetPoint, GL_POLYGON_OFFSET_POINT},
{gale::openGL::flag_polygonSmooth, GL_POLYGON_SMOOTH},
{gale::openGL::flag_primitiveRestart, GL_PRIMITIVE_RESTART},
{gale::openGL::flag_primitiveRestartFixedIndex, GL_PRIMITIVE_RESTART_FIXED_INDEX},
#endif
{gale::openGL::flag_sampleAlphaToCoverage, GL_SAMPLE_ALPHA_TO_COVERAGE},
#if 0
!(defined(__TARGET_OS__Android) || defined(__TARGET_OS__MacOs))
{gale::openGL::flag_sampleAlphaToOne, GL_SAMPLE_ALPHA_TO_ONE},
#endif
{gale::openGL::flag_sampleCoverage, GL_SAMPLE_COVERAGE},
#if 0
!(defined(__TARGET_OS__Android) || defined(__TARGET_OS__MacOs))
{gale::openGL::flag_sampleShading, GL_SAMPLE_SHADING},
{gale::openGL::flag_sampleMask, GL_SAMPLE_MASK},
#endif
{gale::openGL::flag_scissorTest, GL_SCISSOR_TEST},
{gale::openGL::flag_stencilTest, GL_STENCIL_TEST},
#if 0
!(defined(__TARGET_OS__Android) || defined(__TARGET_OS__MacOs))
{gale::openGL::flag_programPointSize, GL_PROGRAM_POINT_SIZE},
#endif
{gale::openGL::flag_texture2D, GL_TEXTURE_2D},
#if 0
!(defined(__TARGET_OS__Android) || defined(__TARGET_OS__MacOs))
{gale::openGL::flag_alphaTest, GL_ALPHA_TEST},
{gale::openGL::flag_fog, GL_FOG}
#endif
//{(uint32_t)gale::openGL::FLAG_, GL_}
};
static int32_t basicFlagCount = sizeof(basicFlag) / sizeof(struct correspondenceTable);
void gale::openGL::reset() {
#ifdef DIRECT_MODE
GALE_TODO("...");
#else
l_flagsMustBeSet = 0;
l_programId = -1;
l_textureflags = 0;
updateAllFlags();
#endif
}
void gale::openGL::enable(enum gale::openGL::flag _flagID) {
//GALE_INFO("Enable : " <GALE_ERROR< _flagID);
#ifdef DIRECT_MODE
for (int32_t iii=0; iii<basicFlagCount ; iii++) {
if ( basicFlag[iii].curentFlag == (uint32_t)_flagID ) {
glEnable(basicFlag[iii].OGlFlag);
}
}
# else
//GALE_DEBUG("Enable FLAGS = " << l_flagsMustBeSet);
l_flagsMustBeSet |= (uint32_t)_flagID;
//GALE_DEBUG(" == >" << l_flagsMustBeSet);
#endif
}
void gale::openGL::disable(enum gale::openGL::flag _flagID) {
//GALE_INFO("Disable : " << _flagID);
#ifdef DIRECT_MODE
for (int32_t iii=0; iii<basicFlagCount ; iii++) {
if ( basicFlag[iii].curentFlag == (uint32_t)_flagID ) {
glDisable(basicFlag[iii].OGlFlag);
}
}
# else
//GALE_DEBUG("Disable FLAGS = " << l_flagsMustBeSet);
l_flagsMustBeSet &= ~((uint32_t)_flagID);
//GALE_DEBUG(" == >" << l_flagsMustBeSet);
#endif
}
void gale::openGL::updateAllFlags() {
#ifdef DIRECT_MODE
return;
#endif
// check if fhags has change :
if (l_flagsMustBeSet == l_flagsCurrent ) {
OPENGL_INFO("OGL: current flag : " << (enum openGL::flag)l_flagsMustBeSet);
return;
}
OPENGL_INFO("OGL: set new flag : " << (enum openGL::flag)l_flagsMustBeSet);
for (int32_t iii=0; iii<basicFlagCount ; iii++) {
uint32_t CurrentFlag = basicFlag[iii].curentFlag;
if ( (l_flagsMustBeSet&CurrentFlag)!=(l_flagsCurrent&CurrentFlag) ) {
if ( (l_flagsMustBeSet&CurrentFlag) != 0) {
glEnable(basicFlag[iii].OGlFlag);
OPENGL_INFO(" enable : " << (enum openGL::flag)basicFlag[iii].curentFlag);
} else {
glDisable(basicFlag[iii].OGlFlag);
OPENGL_INFO(" disable : " << (enum openGL::flag)basicFlag[iii].curentFlag);
}
}
}
l_flagsCurrent = l_flagsMustBeSet;
}
void gale::openGL::activeTexture(uint32_t _flagID) {
if (l_programId >= 0) {
glActiveTexture(_flagID);
}
}
void gale::openGL::desActiveTexture(uint32_t _flagID) {
if (l_programId >= 0) {
}
}
const uint32_t convertRenderMode[] = {
GL_POINTS,
GL_LINES,
GL_LINE_STRIP,
GL_LINE_LOOP,
GL_TRIANGLES,
GL_TRIANGLE_STRIP,
GL_TRIANGLE_FAN,
#if (!defined(__TARGET_OS__IOs) && !defined(__TARGET_OS__Android))
GL_QUADS,
GL_QUAD_STRIP,
GL_POLYGON
#else
0,
0,
0
#endif
};
void gale::openGL::drawArrays(enum gale::openGL::renderMode _mode, int32_t _first, int32_t _count) {
if (l_programId >= 0) {
updateAllFlags();
glDrawArrays(convertRenderMode[_mode], _first, _count);
}
}
void gale::openGL::drawElements(enum renderMode _mode, const std::vector<uint32_t>& _indices) {
if (l_programId >= 0) {
updateAllFlags();
//GALE_DEBUG("Request draw of " << indices.size() << "elements");
glDrawElements(convertRenderMode[_mode], _indices.size(), GL_UNSIGNED_INT, &_indices[0]);
}
}
void gale::openGL::drawElements16(enum renderMode _mode, const std::vector<uint16_t>& _indices) {
if (l_programId >= 0) {
updateAllFlags();
glDrawElements(convertRenderMode[_mode], _indices.size(), GL_UNSIGNED_SHORT, &_indices[0]);
}
}
void gale::openGL::drawElements8(enum renderMode _mode, const std::vector<uint8_t>& _indices) {
if (l_programId >= 0) {
updateAllFlags();
glDrawElements(convertRenderMode[_mode], _indices.size(), GL_UNSIGNED_BYTE, &_indices[0]);
}
}
void gale::openGL::useProgram(int32_t _id) {
//GALE_DEBUG("USE prog : " << id);
#if 1
// note : In normal openGL case, the system might call with the program ID and at the end with 0,
// here, we wrap this use to prevent over call of glUseProgram == > then we set -1 when the
// user no more use this program, and just stop grnerating. (chen 0 == > this is an errored program ...
if (-1 == _id) {
// not used == > because it is unneded
return;
}
if (l_programId != _id) {
l_programId = _id;
glUseProgram(l_programId);
}
#else
if (-1 == _id) {
glUseProgram(0);
} else {
l_programId = _id;
glUseProgram(_id);
}
#endif
}
bool gale::openGL::genBuffers(std::vector<uint32_t>& _buffers) {
if (_buffers.size() == 0) {
GALE_WARNING("try to generate vector buffer with size 0");
return true;
}
OPENGL_INFO("Create N=" << _buffers.size() << " Buffer");
glGenBuffers(_buffers.size(), &_buffers[0]);
checkGlError("glGenBuffers", __LINE__);
bool hasError = false;
for (size_t iii=0; iii<_buffers.size(); iii++) {
if (_buffers[iii] == 0) {
GALE_ERROR("[" << iii << "] error to create a buffer id=" << _buffers[iii]);
hasError = true;
}
}
return hasError;
}
bool gale::openGL::deleteBuffers(std::vector<uint32_t>& _buffers) {
if (_buffers.size() == 0) {
GALE_WARNING("try to delete vector buffer with size 0");
return true;
}
glDeleteBuffers(_buffers.size(), &_buffers[0]);
checkGlError("glDeleteBuffers", __LINE__);
for (auto &it : _buffers) {
it = 0;
}
return true;
}
bool gale::openGL::bindBuffer(uint32_t _bufferId) {
glBindBuffer(GL_ARRAY_BUFFER, _bufferId);
checkGlError("glBindBuffer", __LINE__);
return true;
}
static GLenum convertUsage[] = {
GL_STREAM_DRAW,
GL_STATIC_DRAW,
GL_DYNAMIC_DRAW
};
bool gale::openGL::bufferData(size_t _size, const void* _data, enum gale::openGL::usage _usage) {
glBufferData(GL_ARRAY_BUFFER, _size, _data, convertUsage[_usage]);
checkGlError("glBufferData", __LINE__);
return true;
}
bool gale::openGL::unbindBuffer() {
glBindBuffer(GL_ARRAY_BUFFER, 0);
checkGlError("glBindBuffer(0)", __LINE__);
return true;
}
static void checkGlError(const char* _op) {
for (GLint error = glGetError(); error; error = glGetError()) {
GALE_ERROR("after " << _op << "() glError (" << error << ")");
}
}
#define LOG_OGL_INTERNAL_BUFFER_LEN (8192)
static char l_bufferDisplayError[LOG_OGL_INTERNAL_BUFFER_LEN] = "";
int64_t gale::openGL::shader::create(enum gale::openGL::shader::type _type) {
GLuint shader = 0;
if (_type == gale::openGL::shader::type_vertex) {
shader = glCreateShader(GL_VERTEX_SHADER);
} else if (_type == gale::openGL::shader::type_fragment) {
shader = glCreateShader(GL_FRAGMENT_SHADER);
} else {
GALE_ERROR("create shader with wrong type ...");
return -1;
}
if (shader == 0) {
GALE_ERROR("glCreateShader return error ...");
checkGlError("glCreateShader");
return -1;
}
return int64_t(shader);
}
void gale::openGL::shader::remove(int64_t& _shader) {
if (_shader < 0) {
return;
}
glDeleteShader(GLuint(_shader));
_shader = -1;
}
bool gale::openGL::shader::compile(int64_t _shader, const std::string& _data) {
const char* data = &_data[0];
glShaderSource(GLuint(_shader), 1, (const char**)&data, nullptr);
glCompileShader(GLuint(_shader));
GLint compiled = 0;
glGetShaderiv(GLuint(_shader), GL_COMPILE_STATUS, &compiled);
if (!compiled) {
GLint infoLen = 0;
l_bufferDisplayError[0] = '\0';
glGetShaderInfoLog(GLuint(_shader), LOG_OGL_INTERNAL_BUFFER_LEN, &infoLen, l_bufferDisplayError);
GALE_ERROR("Error " << l_bufferDisplayError);
std::vector<std::string> lines = etk::split(_data, '\n');
for (size_t iii=0; iii<lines.size(); iii++) {
GALE_ERROR("file " << (iii+1) << "|" << lines[iii]);
}
return false;
}
return true;
}
int64_t gale::openGL::program::create() {
GLuint program = glCreateProgram();
if (program == 0) {
GALE_ERROR("program creation return error ...");
checkGlError("glCreateProgram", __LINE__);
return -1;
}
GALE_DEBUG("Create program with oglID=" << program);
return int64_t(program);
}
void gale::openGL::program::remove(int64_t& _prog) {
if (_prog < 0) {
return;
}
glDeleteProgram(GLuint(_prog));
checkGlError("glDeleteProgram", __LINE__);
_prog = -1;
}
bool gale::openGL::program::attach(int64_t _prog, int64_t _shader) {
if (_prog < 0) {
GALE_ERROR("wrong program ID");
return false;
}
if (_shader < 0) {
GALE_ERROR("wrong shader ID");
return false;
}
glAttachShader(GLuint(_prog), GLuint(_shader));
checkGlError("glAttachShader", __LINE__);
return true;
}
bool gale::openGL::program::compile(int64_t _prog) {
if (_prog < 0) {
GALE_ERROR("wrong program ID");
return false;
}
glLinkProgram(GLuint(_prog));
checkGlError("glLinkProgram", __LINE__);
GLint linkStatus = GL_FALSE;
glGetProgramiv(GLuint(_prog), GL_LINK_STATUS, &linkStatus);
checkGlError("glGetProgramiv", __LINE__);
if (linkStatus != GL_TRUE) {
GLint bufLength = 0;
l_bufferDisplayError[0] = '\0';
glGetProgramInfoLog(GLuint(_prog), LOG_OGL_INTERNAL_BUFFER_LEN, &bufLength, l_bufferDisplayError);
char tmpLog[256];
int32_t idOut=0;
GALE_ERROR("Could not compile \"PROGRAM\":");
for (size_t iii=0; iii<LOG_OGL_INTERNAL_BUFFER_LEN ; iii++) {
tmpLog[idOut] = l_bufferDisplayError[iii];
if ( tmpLog[idOut] == '\n'
|| tmpLog[idOut] == '\0'
|| idOut >= 256) {
tmpLog[idOut] = '\0';
GALE_ERROR(" == > " << tmpLog);
idOut=0;
} else {
idOut++;
}
if (l_bufferDisplayError[iii] == '\0') {
break;
}
}
if (idOut != 0) {
tmpLog[idOut] = '\0';
GALE_ERROR(" == > " << tmpLog);
}
return false;
}
return true;
}
int32_t gale::openGL::program::getAttributeLocation(int64_t _prog, const std::string& _name) {
if (_prog < 0) {
GALE_ERROR("wrong program ID");
return -1;
}
if (_name.size() == 0) {
GALE_ERROR("wrong name of attribure");
return -1;
}
GLint val = glGetAttribLocation(GLuint(_prog), _name.c_str());
if (val < 0) {
checkGlError("glGetAttribLocation", __LINE__);
GALE_WARNING("glGetAttribLocation(\"" << _name << "\") = " << val);
}
return val;
}
int32_t gale::openGL::program::getUniformLocation(int64_t _prog, const std::string& _name) {
if (_prog < 0) {
GALE_ERROR("wrong program ID");
return -1;
}
if (_name.size() == 0) {
GALE_ERROR("wrong name of uniform");
return -1;
}
GLint val = glGetUniformLocation(GLuint(_prog), _name.c_str());
if (val < 0) {
checkGlError("glGetUniformLocation", __LINE__);
GALE_WARNING("glGetUniformLocation(\"" << _name << "\") = " << val);
}
return val;
}
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