ddnet/src/engine/client/opengl_sl_program.cpp

#include "opengl_sl_program.h"
#include "opengl_sl.h"
#include <base/system.h>

void CGLSLProgram::CreateProgram() {
	m_ProgramID = glCreateProgram();
}

void CGLSLProgram::DeleteProgram() {
	if (!m_IsLinked) return;
	m_IsLinked = false;
	glDeleteProgram(m_ProgramID);
}

bool CGLSLProgram::AddShader(CGLSL* pShader) {
	if (pShader->IsLoaded()) {
		glAttachShader(m_ProgramID, pShader->GetShaderID());
		return true;
	}
	return false;
}

void CGLSLProgram::DetachShader(CGLSL* pShader) {
	if (pShader->IsLoaded()) {
		glDetachShader(m_ProgramID, pShader->GetShaderID());
	}
}

void CGLSLProgram::LinkProgram() {
	glLinkProgram(m_ProgramID);
	int LinkStatus;
	glGetProgramiv(m_ProgramID, GL_LINK_STATUS, &LinkStatus);
	m_IsLinked = LinkStatus == GL_TRUE;
	if (!m_IsLinked) {
		char sInfoLog[1024];
		char sFinalMessage[1536];
		int iLogLength;
		glGetProgramInfoLog(m_ProgramID, 1024, &iLogLength, sInfoLog);
		str_format(sFinalMessage, 1536, "Error! Shader program wasn't linked! The linker returned:\n\n%s", sInfoLog);
		dbg_msg("GLSL Program", sFinalMessage);
	}
}

void CGLSLProgram::SetUniformVec4(int Loc, int Count, const float* Value) {
	glUniform4fv(Loc, Count, Value);
}

void CGLSLProgram::SetUniform(int Loc, const int Value) {
	glUniform1i(Loc, Value);
}

void CGLSLProgram::SetUniform(int Loc, const unsigned int Value) {
	glUniform1ui(Loc, Value);
}

void CGLSLProgram::SetUniform(int Loc, const float Value) {
	glUniform1f(Loc, Value);
}

void CGLSLProgram::SetUniform(int Loc, const bool Value) {
	glUniform1i(Loc, (int)Value);
}

int CGLSLProgram::GetUniformLoc(const char* Name) {
	return glGetUniformLocation(m_ProgramID, Name);
}

void CGLSLProgram::UseProgram() {
	if(m_IsLinked) glUseProgram(m_ProgramID);
}

GLuint CGLSLProgram::GetProgramID() {
	return m_ProgramID;
}

CGLSLProgram::CGLSLProgram() {
	m_IsLinked = false;
}

CGLSLProgram::~CGLSLProgram() {
	DeleteProgram();
}