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GLProgram.cpp
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GLProgram.cpp
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#include "GLProgram.h"
#include <fstream>
#include <sstream>
#include <cassert>
#include <cstring>
#include <sys/stat.h>
#if OPENGL_VERSION >= 4
#include "gl_core_4_4.h"
#else
#include "gl_core_3_3.h"
#endif
bool fileExists(const std::string & fileName)
{
struct stat info;
return 0 == stat(fileName.c_str(), &info);
}
std::string textFileRead(const std::string & fileName)
{
std::ifstream inFile( fileName, std::ios::in );
std::ostringstream code;
while (inFile.good()) {
int c = inFile.get();
if (!inFile.eof())
code << (char)c;
}
inFile.close();
return code.str();
}
int typeSize(int type)
{
switch(type) {
// Floats
case GL_FLOAT: return sizeof(float);
case GL_FLOAT_VEC2: return sizeof(float) * 2;
case GL_FLOAT_VEC3: return sizeof(float) * 3;
case GL_FLOAT_VEC4: return sizeof(float) * 4;
// Doubles
case GL_DOUBLE: return sizeof(double);
#if OPENGL_VERSION >= 4
case GL_DOUBLE_VEC2: return sizeof(double) * 2;
case GL_DOUBLE_VEC3: return sizeof(double) * 3;
case GL_DOUBLE_VEC4: return sizeof(double) * 4;
#endif
// Samplers, Ints and Bools
case GL_SAMPLER_1D:
case GL_SAMPLER_2D:
case GL_SAMPLER_3D:
case GL_SAMPLER_CUBE:
case GL_SAMPLER_1D_SHADOW:
case GL_SAMPLER_2D_SHADOW:
case GL_SAMPLER_1D_ARRAY:
case GL_SAMPLER_2D_ARRAY:
case GL_SAMPLER_1D_ARRAY_SHADOW:
case GL_SAMPLER_2D_ARRAY_SHADOW:
case GL_SAMPLER_2D_MULTISAMPLE:
case GL_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_SAMPLER_CUBE_SHADOW:
case GL_SAMPLER_BUFFER:
case GL_SAMPLER_2D_RECT:
case GL_SAMPLER_2D_RECT_SHADOW:
case GL_INT_SAMPLER_1D:
case GL_INT_SAMPLER_2D:
case GL_INT_SAMPLER_3D:
case GL_INT_SAMPLER_CUBE:
case GL_INT_SAMPLER_1D_ARRAY:
case GL_INT_SAMPLER_2D_ARRAY:
case GL_INT_SAMPLER_2D_MULTISAMPLE:
case GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_INT_SAMPLER_BUFFER:
case GL_INT_SAMPLER_2D_RECT:
case GL_UNSIGNED_INT_SAMPLER_1D:
case GL_UNSIGNED_INT_SAMPLER_2D:
case GL_UNSIGNED_INT_SAMPLER_3D:
case GL_UNSIGNED_INT_SAMPLER_CUBE:
case GL_UNSIGNED_INT_SAMPLER_1D_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE:
case GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_BUFFER:
case GL_UNSIGNED_INT_SAMPLER_2D_RECT:
case GL_BOOL:
case GL_INT :
return sizeof(int);
case GL_BOOL_VEC2:
case GL_INT_VEC2:
return sizeof(int) * 2;
case GL_BOOL_VEC3:
case GL_INT_VEC3:
return sizeof(int) * 3;
case GL_BOOL_VEC4:
case GL_INT_VEC4:
return sizeof(int) * 4;
// Unsigned ints
case GL_UNSIGNED_INT: return sizeof(unsigned int);
case GL_UNSIGNED_INT_VEC2: return sizeof(unsigned int) * 2;
case GL_UNSIGNED_INT_VEC3: return sizeof(unsigned int) * 3;
case GL_UNSIGNED_INT_VEC4: return sizeof(unsigned int) * 4;
// Float Matrices
case GL_FLOAT_MAT2: return sizeof(float) * 4;
case GL_FLOAT_MAT3: return sizeof(float) * 9;
case GL_FLOAT_MAT4: return sizeof(float) * 16;
case GL_FLOAT_MAT2x3: return sizeof(float) * 6;
case GL_FLOAT_MAT2x4: return sizeof(float) * 8;
case GL_FLOAT_MAT3x2: return sizeof(float) * 6;
case GL_FLOAT_MAT3x4: return sizeof(float) * 12;
case GL_FLOAT_MAT4x2: return sizeof(float) * 8;
case GL_FLOAT_MAT4x3: return sizeof(float) * 12;
// Double Matrices
#if OPENGL_VERSION >= 4
case GL_DOUBLE_MAT2: return sizeof(double) * 4;
case GL_DOUBLE_MAT3: return sizeof(double) * 9;
case GL_DOUBLE_MAT4: return sizeof(double) * 16;
case GL_DOUBLE_MAT2x3: return sizeof(double) * 6;
case GL_DOUBLE_MAT2x4: return sizeof(double) * 8;
case GL_DOUBLE_MAT3x2: return sizeof(double) * 6;
case GL_DOUBLE_MAT3x4: return sizeof(double) * 12;
case GL_DOUBLE_MAT4x2: return sizeof(double) * 8;
case GL_DOUBLE_MAT4x3: return sizeof(double) * 12;
#endif
default: return 0;
}
}
const char *const GLProgram::ShaderTypeStrs[NUM_SHADER_TYPE] = { "Vertex Shader", "Geometry Shader", "Tesselation Control Shader", "Tesselation Evaluation Shader", "Fragment Shader", "Compute Shader" };
GLProgram::GLProgram() : pProgram(0), rowmajor(true) {
std::fill_n(pShader, int(NUM_SHADER_TYPE), 0);
}
GLProgram::~GLProgram() { reset(); }
void GLProgram::reset()
{
if (pProgram){
glDeleteProgram(pProgram);
pProgram = 0;
}
for (int i = 0; i < NUM_SHADER_TYPE; i++)
if (pShader[i]){
//glDetachShader(progHandle, shaderHandles[i]);
glDeleteShader(pShader[i]);
pShader[i] = 0;
}
}
int GLProgram::compileAndLinkAllShadersFromString(const std::string &vtxShaderStr, const std::string &fragShaderStr, const std::string &geomShaderStr)
{
//reset();
if (!compileShaderFromString(vtxShaderStr, VERTEX_SHADER)){
fprintf(stderr, "Vertex shader failed to compile!\n%s", log().c_str());
return -1;
}
if (!compileShaderFromString(fragShaderStr, FRAGMENT_SHADER)){
fprintf(stderr, "Fragment shader failed to compile!\n%s", log().c_str());
return -1;
}
if (!geomShaderStr.empty() && !compileShaderFromString(geomShaderStr, GEOMETRY_SHADER)){
fprintf(stderr, "Geometry shader failed to compile!\n%s", log().c_str());
return -1;
}
if (!link()){
fprintf(stderr, "Shader program failed to link!\n%s", log().c_str());
return -1;
}
return 0;
}
int GLProgram::compileAndLinkAllShadersFromFile(const char *vertexShaderFile, const char *fragShaderFile, const char *geomShaderFile)
{
return compileAndLinkAllShadersFromString(textFileRead(vertexShaderFile), textFileRead(fragShaderFile), geomShaderFile ? textFileRead(geomShaderFile) : std::string());
}
bool GLProgram::compileShaderFromFile(const char * fileName, ShaderType type)
{
if (!fileExists(fileName)) {
logString = "Shader File: " + std::string(fileName) + " not found.";
return false;
}
return compileShaderFromString(textFileRead(fileName), type);
}
bool GLProgram::compileShaderFromString(const std::string & source, ShaderType type)
{
const GLenum GLShaderTypes[NUM_SHADER_TYPE] = {
GL_VERTEX_SHADER,
GL_GEOMETRY_SHADER,
GL_FRAGMENT_SHADER,
#if OPENGL_VERSION >= 4
GL_TESS_CONTROL_SHADER,
GL_TESS_EVALUATION_SHADER,
GL_COMPUTE_SHADER
#endif
};
GLuint &hdl = pShader[type];
if (!hdl) hdl = glCreateShader(GLShaderTypes[type]);
const char * ss = source.c_str();
glShaderSource(hdl, 1, &ss, NULL);
// Compile the shader
glCompileShader(hdl);
// Check for errors
int result;
glGetShaderiv(hdl, GL_COMPILE_STATUS, &result);
if (GL_FALSE == result) {
// Compile failed, store log and return false
logString = getShaderInfoLog(type);
return false;
}
// update uniform cache if program is already linked
if (linked()) { cacheUniforms(); cacheBlocks(); }
return true;
}
bool GLProgram::link()
{
if (!pProgram) {
pProgram = glCreateProgram();
if (pProgram == 0) {
logString = "Unable to create shader program.";
return false;
}
// attach shaders
for (int i = 0; i < NUM_SHADER_TYPE; i++)
if (pShader[i]>0) glAttachShader(pProgram, pShader[i]);
}
glLinkProgram(pProgram);
if (!linked()){
// fail to link, Store log and return false
logString = getProgramInfoLog();
return false;
}
// cache all uniforms
cacheUniforms();
cacheBlocks();
return true;
}
void GLProgram::cacheUniforms()
{
pUniforms.clear();
int count;
glGetProgramiv(pProgram, GL_ACTIVE_UNIFORMS, &count);
int maxUniLength;
glGetProgramiv(pProgram, GL_ACTIVE_UNIFORM_MAX_LENGTH, &maxUniLength);
char *name = new char[maxUniLength];
for (int i = 0; i < count; ++i) {
GLsizei actualLen;
GLenum type;
GLint size;
glGetActiveUniform(pProgram, i, maxUniLength, &actualLen, &size, &type, name);
size_t namelen = strlen(name);
if (namelen>3 && !strcmp(name + namelen - 3, "[0]")) {
name[namelen - 3] = '\0';
}
// -1 indicates that is not an active uniform, although it may be present in a uniform block
int loc = glGetUniformLocation(pProgram, name);
if (loc != -1) {
GLint uniArrayStride;
glGetActiveUniformsiv(pProgram, 1, (GLuint*)&i, GL_UNIFORM_ARRAY_STRIDE, &uniArrayStride);
pUniforms[name] = { type, loc, size, uniArrayStride };
}
}
delete[] name;
}
void GLProgram::cacheBlocks()
{
pBlocks.clear();
int count;
glGetProgramiv(pProgram, GL_ACTIVE_UNIFORM_BLOCKS, &count);
if (count == 0) return;
int maxUniBlkLength;
glGetProgramiv(pProgram, GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH, &maxUniBlkLength);
char *name = new char[maxUniBlkLength];
int maxUniLength;
glGetProgramiv(pProgram, GL_ACTIVE_UNIFORM_MAX_LENGTH, &maxUniLength);
char *name2 = new char[maxUniLength];
int dataSize, actualLen, activeUnif;
int uniType, uniSize, uniOffset, uniMatStride, uniArrayStride, auxSize;
int blockCount = 0;
UniformBlock block;
for (int i = 0; i < count; ++i) {
// Get buffers name
glGetActiveUniformBlockName(pProgram, i, maxUniBlkLength, &actualLen, name);
bool newBlock = true;
if (pBlocks.count(name)) {
newBlock = false;
block = pBlocks[name];
}
blockCount += newBlock;
/*if (!pBlocks.count(name))*/ {
// Get buffers size
glGetActiveUniformBlockiv(pProgram, i, GL_UNIFORM_BLOCK_DATA_SIZE, &dataSize);
if (newBlock) {
glGenBuffers(1, &block.buffer);
glBindBuffer(GL_UNIFORM_BUFFER, block.buffer);
glBufferData(GL_UNIFORM_BUFFER, dataSize, NULL, GL_DYNAMIC_DRAW);
glUniformBlockBinding(pProgram, i, blockCount);
glBindBufferRange(GL_UNIFORM_BUFFER, blockCount, block.buffer, 0, dataSize);
}
else {
glBindBuffer(GL_UNIFORM_BUFFER, block.buffer);
glUniformBlockBinding(pProgram, i, block.bindingIndex);
}
glGetActiveUniformBlockiv(pProgram, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS, &activeUnif);
unsigned int *indices = new unsigned int[activeUnif];
glGetActiveUniformBlockiv(pProgram, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES, (int *)indices);
for (int k = 0; k < activeUnif; ++k) {
glGetActiveUniformName(pProgram, indices[k], maxUniLength, &actualLen, name2);
glGetActiveUniformsiv(pProgram, 1, &indices[k], GL_UNIFORM_TYPE, &uniType);
glGetActiveUniformsiv(pProgram, 1, &indices[k], GL_UNIFORM_SIZE, &uniSize);
glGetActiveUniformsiv(pProgram, 1, &indices[k], GL_UNIFORM_OFFSET, &uniOffset);
glGetActiveUniformsiv(pProgram, 1, &indices[k], GL_UNIFORM_MATRIX_STRIDE, &uniMatStride);
glGetActiveUniformsiv(pProgram, 1, &indices[k], GL_UNIFORM_ARRAY_STRIDE, &uniArrayStride);
if (uniArrayStride > 0)
auxSize = uniArrayStride * uniSize;
else if (uniMatStride > 0) {
switch(uniType) {
case GL_FLOAT_MAT2:
case GL_FLOAT_MAT2x3:
case GL_FLOAT_MAT2x4:
#if OPENGL_VERSION >= 4
case GL_DOUBLE_MAT2:
case GL_DOUBLE_MAT2x3:
case GL_DOUBLE_MAT2x4:
#endif
auxSize = 2 * uniMatStride;
break;
case GL_FLOAT_MAT3:
case GL_FLOAT_MAT3x2:
case GL_FLOAT_MAT3x4:
#if OPENGL_VERSION >= 4
case GL_DOUBLE_MAT3:
case GL_DOUBLE_MAT3x2:
case GL_DOUBLE_MAT3x4:
#endif
auxSize = 3 * uniMatStride;
break;
case GL_FLOAT_MAT4:
case GL_FLOAT_MAT4x2:
case GL_FLOAT_MAT4x3:
#if OPENGL_VERSION >= 4
case GL_DOUBLE_MAT4:
case GL_DOUBLE_MAT4x2:
case GL_DOUBLE_MAT4x3:
#endif
auxSize = 4 * uniMatStride;
break;
}
}
else
auxSize = typeSize(uniType);
block.uniformOffsets[name2] = { (unsigned)uniType, uniOffset, auxSize, uniArrayStride };
}
delete[] indices;
if (newBlock) {
block.size = dataSize;
block.bindingIndex = blockCount;
}
pBlocks[name] = block;
}
//else
// glUniformBlockBinding(pProgram, i, pBlocks[name].bindingIndex);
}
delete []name2;
delete []name;
}
void GLProgram::setUniformPVOID(const char *name, void *value)
{
assert(isbinded());
auto it = pUniforms.find(name);
if (it == pUniforms.end()){
fprintf(stderr, "Uniform: %s not found.\n", name);
return;
}
const Uniform &u = it->second;
switch (u.type) {
// Floats
case GL_FLOAT:
glUniform1fv(u.location, u.size, (const GLfloat *)value);
break;
case GL_FLOAT_VEC2:
glUniform2fv(u.location, u.size, (const GLfloat *)value);
break;
case GL_FLOAT_VEC3:
glUniform3fv(u.location, u.size, (const GLfloat *)value);
break;
case GL_FLOAT_VEC4:
glUniform4fv(u.location, u.size, (const GLfloat *)value);
break;
// Doubles
#if OPENGL_VERSION >= 4
case GL_DOUBLE:
glUniform1dv(u.location, u.size, (const GLdouble *)value);
break;
case GL_DOUBLE_VEC2:
glUniform2dv(u.location, u.size, (const GLdouble *)value);
break;
case GL_DOUBLE_VEC3:
glUniform3dv(u.location, u.size, (const GLdouble *)value);
break;
case GL_DOUBLE_VEC4:
glUniform4dv(u.location, u.size, (const GLdouble *)value);
break;
#endif
// Samplers, Ints and Bools
#if OPENGL_VERSION >= 4
case GL_IMAGE_1D:
case GL_IMAGE_2D:
case GL_IMAGE_3D:
case GL_IMAGE_2D_RECT:
case GL_IMAGE_CUBE:
case GL_IMAGE_BUFFER:
case GL_IMAGE_1D_ARRAY:
case GL_IMAGE_2D_ARRAY:
case GL_IMAGE_CUBE_MAP_ARRAY:
case GL_IMAGE_2D_MULTISAMPLE:
case GL_IMAGE_2D_MULTISAMPLE_ARRAY:
case GL_INT_IMAGE_1D:
case GL_INT_IMAGE_2D:
case GL_INT_IMAGE_3D:
case GL_INT_IMAGE_2D_RECT:
case GL_INT_IMAGE_CUBE:
case GL_INT_IMAGE_BUFFER:
case GL_INT_IMAGE_1D_ARRAY:
case GL_INT_IMAGE_2D_ARRAY:
case GL_INT_IMAGE_CUBE_MAP_ARRAY:
case GL_INT_IMAGE_2D_MULTISAMPLE:
case GL_INT_IMAGE_2D_MULTISAMPLE_ARRAY:
case GL_UNSIGNED_INT_IMAGE_1D:
case GL_UNSIGNED_INT_IMAGE_2D:
case GL_UNSIGNED_INT_IMAGE_3D:
case GL_UNSIGNED_INT_IMAGE_2D_RECT:
case GL_UNSIGNED_INT_IMAGE_CUBE:
case GL_UNSIGNED_INT_IMAGE_BUFFER:
case GL_UNSIGNED_INT_IMAGE_1D_ARRAY:
case GL_UNSIGNED_INT_IMAGE_2D_ARRAY:
case GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY:
case GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE:
case GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE_ARRAY:
#endif
case GL_SAMPLER_1D:
case GL_SAMPLER_2D:
case GL_SAMPLER_3D:
case GL_SAMPLER_CUBE:
case GL_SAMPLER_1D_SHADOW:
case GL_SAMPLER_2D_SHADOW:
case GL_SAMPLER_1D_ARRAY:
case GL_SAMPLER_2D_ARRAY:
case GL_SAMPLER_1D_ARRAY_SHADOW:
case GL_SAMPLER_2D_ARRAY_SHADOW:
case GL_SAMPLER_2D_MULTISAMPLE:
case GL_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_SAMPLER_CUBE_SHADOW:
case GL_SAMPLER_BUFFER:
case GL_SAMPLER_2D_RECT:
case GL_SAMPLER_2D_RECT_SHADOW:
case GL_INT_SAMPLER_1D:
case GL_INT_SAMPLER_2D:
case GL_INT_SAMPLER_3D:
case GL_INT_SAMPLER_CUBE:
case GL_INT_SAMPLER_1D_ARRAY:
case GL_INT_SAMPLER_2D_ARRAY:
case GL_INT_SAMPLER_2D_MULTISAMPLE:
case GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_INT_SAMPLER_BUFFER:
case GL_INT_SAMPLER_2D_RECT:
case GL_UNSIGNED_INT_SAMPLER_1D:
case GL_UNSIGNED_INT_SAMPLER_2D:
case GL_UNSIGNED_INT_SAMPLER_3D:
case GL_UNSIGNED_INT_SAMPLER_CUBE:
case GL_UNSIGNED_INT_SAMPLER_1D_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE:
case GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_BUFFER:
case GL_UNSIGNED_INT_SAMPLER_2D_RECT:
case GL_BOOL:
case GL_INT:
glUniform1iv(u.location, u.size, (const GLint *)value);
break;
case GL_BOOL_VEC2:
case GL_INT_VEC2:
glUniform2iv(u.location, u.size, (const GLint *)value);
break;
case GL_BOOL_VEC3:
case GL_INT_VEC3:
glUniform3iv(u.location, u.size, (const GLint *)value);
break;
case GL_BOOL_VEC4:
case GL_INT_VEC4:
glUniform4iv(u.location, u.size, (const GLint *)value);
break;
// Unsigned ints
case GL_UNSIGNED_INT:
glUniform1uiv(u.location, u.size, (const GLuint *)value);
break;
case GL_UNSIGNED_INT_VEC2:
glUniform2uiv(u.location, u.size, (const GLuint *)value);
break;
case GL_UNSIGNED_INT_VEC3:
glUniform3uiv(u.location, u.size, (const GLuint *)value);
break;
case GL_UNSIGNED_INT_VEC4:
glUniform4uiv(u.location, u.size, (const GLuint *)value);
break;
// Float Matrices
case GL_FLOAT_MAT2:
glUniformMatrix2fv(u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT3:
glUniformMatrix3fv(u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT4:
glUniformMatrix4fv(u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT2x3:
glUniformMatrix2x3fv(u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT2x4:
glUniformMatrix2x4fv(u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT3x2:
glUniformMatrix3x2fv(u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT3x4:
glUniformMatrix3x4fv(u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT4x2:
glUniformMatrix4x2fv(u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT4x3:
glUniformMatrix4x3fv(u.location, u.size, rowmajor, (const GLfloat *)value);
break;
#if OPENGL_VERSION >= 4
// Double Matrices
case GL_DOUBLE_MAT2:
glUniformMatrix2dv(u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT3:
glUniformMatrix3dv(u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT4:
glUniformMatrix4dv(u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT2x3:
glUniformMatrix2x3dv(u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT2x4:
glUniformMatrix2x4dv(u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT3x2:
glUniformMatrix3x2dv(u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT3x4:
glUniformMatrix3x4dv(u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT4x2:
glUniformMatrix4x2dv(u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT4x3:
glUniformMatrix4x3dv(u.location, u.size, rowmajor, (const GLdouble *)value);
break;
#endif
}
}
#if OPENGL_VERSION >= 4
void GLProgram::setUniformPVOID_GL4(const char *name, void *value)
{
auto it = pUniforms.find(name);
if (it == pUniforms.end()){
fprintf(stderr, "Uniform: %s not found.\n", name);
return;
}
const Uniform &u = it->second;
switch (u.type) {
// Floats
case GL_FLOAT:
glProgramUniform1fv(pProgram, u.location, u.size, (const GLfloat *)value);
break;
case GL_FLOAT_VEC2:
glProgramUniform2fv(pProgram, u.location, u.size, (const GLfloat *)value);
break;
case GL_FLOAT_VEC3:
glProgramUniform3fv(pProgram, u.location, u.size, (const GLfloat *)value);
break;
case GL_FLOAT_VEC4:
glProgramUniform4fv(pProgram, u.location, u.size, (const GLfloat *)value);
break;
// Doubles
case GL_DOUBLE:
glProgramUniform1dv(pProgram, u.location, u.size, (const GLdouble *)value);
break;
case GL_DOUBLE_VEC2:
glProgramUniform2dv(pProgram, u.location, u.size, (const GLdouble *)value);
break;
case GL_DOUBLE_VEC3:
glProgramUniform3dv(pProgram, u.location, u.size, (const GLdouble *)value);
break;
case GL_DOUBLE_VEC4:
glProgramUniform4dv(pProgram, u.location, u.size, (const GLdouble *)value);
break;
// Samplers, Ints and Bools
case GL_IMAGE_1D:
case GL_IMAGE_2D:
case GL_IMAGE_3D:
case GL_IMAGE_2D_RECT:
case GL_IMAGE_CUBE:
case GL_IMAGE_BUFFER:
case GL_IMAGE_1D_ARRAY:
case GL_IMAGE_2D_ARRAY:
case GL_IMAGE_CUBE_MAP_ARRAY:
case GL_IMAGE_2D_MULTISAMPLE:
case GL_IMAGE_2D_MULTISAMPLE_ARRAY:
case GL_INT_IMAGE_1D:
case GL_INT_IMAGE_2D:
case GL_INT_IMAGE_3D:
case GL_INT_IMAGE_2D_RECT:
case GL_INT_IMAGE_CUBE:
case GL_INT_IMAGE_BUFFER:
case GL_INT_IMAGE_1D_ARRAY:
case GL_INT_IMAGE_2D_ARRAY:
case GL_INT_IMAGE_CUBE_MAP_ARRAY:
case GL_INT_IMAGE_2D_MULTISAMPLE:
case GL_INT_IMAGE_2D_MULTISAMPLE_ARRAY:
case GL_UNSIGNED_INT_IMAGE_1D:
case GL_UNSIGNED_INT_IMAGE_2D:
case GL_UNSIGNED_INT_IMAGE_3D:
case GL_UNSIGNED_INT_IMAGE_2D_RECT:
case GL_UNSIGNED_INT_IMAGE_CUBE:
case GL_UNSIGNED_INT_IMAGE_BUFFER:
case GL_UNSIGNED_INT_IMAGE_1D_ARRAY:
case GL_UNSIGNED_INT_IMAGE_2D_ARRAY:
case GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY:
case GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE:
case GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE_ARRAY:
case GL_SAMPLER_1D:
case GL_SAMPLER_2D:
case GL_SAMPLER_3D:
case GL_SAMPLER_CUBE:
case GL_SAMPLER_1D_SHADOW:
case GL_SAMPLER_2D_SHADOW:
case GL_SAMPLER_1D_ARRAY:
case GL_SAMPLER_2D_ARRAY:
case GL_SAMPLER_1D_ARRAY_SHADOW:
case GL_SAMPLER_2D_ARRAY_SHADOW:
case GL_SAMPLER_2D_MULTISAMPLE:
case GL_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_SAMPLER_CUBE_SHADOW:
case GL_SAMPLER_BUFFER:
case GL_SAMPLER_2D_RECT:
case GL_SAMPLER_2D_RECT_SHADOW:
case GL_INT_SAMPLER_1D:
case GL_INT_SAMPLER_2D:
case GL_INT_SAMPLER_3D:
case GL_INT_SAMPLER_CUBE:
case GL_INT_SAMPLER_1D_ARRAY:
case GL_INT_SAMPLER_2D_ARRAY:
case GL_INT_SAMPLER_2D_MULTISAMPLE:
case GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_INT_SAMPLER_BUFFER:
case GL_INT_SAMPLER_2D_RECT:
case GL_UNSIGNED_INT_SAMPLER_1D:
case GL_UNSIGNED_INT_SAMPLER_2D:
case GL_UNSIGNED_INT_SAMPLER_3D:
case GL_UNSIGNED_INT_SAMPLER_CUBE:
case GL_UNSIGNED_INT_SAMPLER_1D_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE:
case GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_BUFFER:
case GL_UNSIGNED_INT_SAMPLER_2D_RECT:
case GL_BOOL:
case GL_INT:
glProgramUniform1iv(pProgram, u.location, u.size, (const GLint *)value);
break;
case GL_BOOL_VEC2:
case GL_INT_VEC2:
glProgramUniform2iv(pProgram, u.location, u.size, (const GLint *)value);
break;
case GL_BOOL_VEC3:
case GL_INT_VEC3:
glProgramUniform3iv(pProgram, u.location, u.size, (const GLint *)value);
break;
case GL_BOOL_VEC4:
case GL_INT_VEC4:
glProgramUniform4iv(pProgram, u.location, u.size, (const GLint *)value);
break;
// Unsigned ints
case GL_UNSIGNED_INT:
glProgramUniform1uiv(pProgram, u.location, u.size, (const GLuint *)value);
break;
case GL_UNSIGNED_INT_VEC2:
glProgramUniform2uiv(pProgram, u.location, u.size, (const GLuint *)value);
break;
case GL_UNSIGNED_INT_VEC3:
glProgramUniform3uiv(pProgram, u.location, u.size, (const GLuint *)value);
break;
case GL_UNSIGNED_INT_VEC4:
glProgramUniform4uiv(pProgram, u.location, u.size, (const GLuint *)value);
break;
// Float Matrices
case GL_FLOAT_MAT2:
glProgramUniformMatrix2fv(pProgram, u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT3:
glProgramUniformMatrix3fv(pProgram, u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT4:
glProgramUniformMatrix4fv(pProgram, u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT2x3:
glProgramUniformMatrix2x3fv(pProgram, u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT2x4:
glProgramUniformMatrix2x4fv(pProgram, u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT3x2:
glProgramUniformMatrix3x2fv(pProgram, u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT3x4:
glProgramUniformMatrix3x4fv(pProgram, u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT4x2:
glProgramUniformMatrix4x2fv(pProgram, u.location, u.size, rowmajor, (const GLfloat *)value);
break;
case GL_FLOAT_MAT4x3:
glProgramUniformMatrix4x3fv(pProgram, u.location, u.size, rowmajor, (const GLfloat *)value);
break;
// Double Matrices
case GL_DOUBLE_MAT2:
glProgramUniformMatrix2dv(pProgram, u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT3:
glProgramUniformMatrix3dv(pProgram, u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT4:
glProgramUniformMatrix4dv(pProgram, u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT2x3:
glProgramUniformMatrix2x3dv(pProgram, u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT2x4:
glProgramUniformMatrix2x4dv(pProgram, u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT3x2:
glProgramUniformMatrix3x2dv(pProgram, u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT3x4:
glProgramUniformMatrix3x4dv(pProgram, u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT4x2:
glProgramUniformMatrix4x2dv(pProgram, u.location, u.size, rowmajor, (const GLdouble *)value);
break;
case GL_DOUBLE_MAT4x3:
glProgramUniformMatrix4x3dv(pProgram, u.location, u.size, rowmajor, (const GLdouble *)value);
break;
}
}
#endif
void GLProgram::setBlock(const char* name, void *value) {
if (pBlocks.count(name) != 0) {
glBindBuffer(GL_UNIFORM_BUFFER, pBlocks[name].buffer);
glBufferSubData(GL_UNIFORM_BUFFER, 0, pBlocks[name].size, value);
glBindBuffer(GL_UNIFORM_BUFFER,0);
}
}
void GLProgram::setBlockUniform(const char *blockName, const char* uniformName, void *value)
{
if (!pBlocks.count(blockName)) return;
std::string uniformComposed = blockName + std::string(".") + uniformName;
std::string finalUniName;
if (pBlocks[blockName].uniformOffsets.count(uniformName))
finalUniName = uniformName;
else if (pBlocks[blockName].uniformOffsets.count(uniformComposed))
finalUniName = uniformComposed;
else
return;
UniformBlock b = pBlocks[blockName];
BlockUniform bUni = b.uniformOffsets[finalUniName];
glBindBuffer(GL_UNIFORM_BUFFER, b.buffer);
glBufferSubData(GL_UNIFORM_BUFFER, bUni.offset, bUni.size, value);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
}
void GLProgram::setBlockUniformArrayElement(const char * blockName,
const char * uniformName,
int arrayIndex,
void * value)
{
assert(pBlocks.count(blockName) && pBlocks[blockName].uniformOffsets.count(uniformName));
UniformBlock b = pBlocks[blockName];
BlockUniform bUni = b.uniformOffsets[uniformName];
glBindBuffer(GL_UNIFORM_BUFFER, b.buffer);
glBufferSubData(GL_UNIFORM_BUFFER,
bUni.offset + bUni.arrayStride * arrayIndex,
bUni.arrayStride, value);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
}
std::string GLProgram::getShaderInfoLog(ShaderType type)
{
unsigned int shaderHdl = pShader[type];
int length = 0;
glGetShaderiv(shaderHdl, GL_INFO_LOG_LENGTH, &length);
std::string s;
if (length > 0) {
char * c_log = new char[length];
int nCharWritten = 0;
glGetShaderInfoLog(shaderHdl, length, &nCharWritten, c_log);
s = nCharWritten ? c_log : "OK";
delete[] c_log;
}
return s;
}
std::string GLProgram::getProgramInfoLog()
{
int length = 0;
glGetProgramiv(pProgram, GL_INFO_LOG_LENGTH, &length);
std::string s;
if (length > 0) {
char * c_log = new char[length];
int nCharWritten = 0;
glGetProgramInfoLog(pProgram, length, &nCharWritten, c_log);
s = nCharWritten ? c_log : "OK";
delete[] c_log;
}
return s;
}
std::string GLProgram::getAllInfoLog()
{
std::string s;
for (int i = 0; i < NUM_SHADER_TYPE; ++i) {
if (pShader[i]) {
s += ShaderTypeStrs[i] + std::string(": ") + getShaderInfoLog((ShaderType)i) + "\n";
}
}
if (pProgram) {
s += "Program: " + getProgramInfoLog();
s += validate() ? " - Valid\n" : " - Not Valid\n";
}
return s;
}
bool GLProgram::shaderCompiled(ShaderType type)
{
int b = GL_FALSE;
if (pProgram) glGetShaderiv(pShader[type], GL_COMPILE_STATUS, &b);
return b != GL_FALSE;
}
bool GLProgram::linked()
{
int b = GL_FALSE;
if (pProgram) glGetProgramiv(pProgram, GL_LINK_STATUS, &b);
return b != GL_FALSE;
}
void GLProgram::bind()
{
assert(glIsProgram(pProgram));
if (pProgram <= 0) return;
glUseProgram( pProgram );
}
void GLProgram::unbind(){ glUseProgram(0); }
bool GLProgram::isbinded()
{
int p = 0;
glGetIntegerv(GL_CURRENT_PROGRAM, &p);
//glGetIntegerv(GL_ACTIVE_PROGRAM, &p);
return p == pProgram;
}
int GLProgram::getAttribLocation(const char * name)
{
assert(isbinded());
int loc = glGetAttribLocation(pProgram, name);
if (loc < 0) fprintf(stderr, "Attribute: %s not found.\n", name);
return loc;
}
void GLProgram::bindAttribLocation(unsigned int location, const char * name)
{
glBindAttribLocation(pProgram, location, name);
}
void GLProgram::bindFragDataLocation(unsigned int location, const char * name)
{
glBindFragDataLocation(pProgram, location, name);
}
void GLProgram::printActiveUniforms()
{
GLint nUniforms, size, location, maxLen;
GLsizei written;
GLenum type;