void BrickProgram::SetupProgram()
{
glUseProgram(GetProgram());
glUniform3f(GetUniformLoc(GetProgram(), "BrickColor"), 1.0f, 0.3f, 0.2f);
glUniform3f(GetUniformLoc(GetProgram(), "MortarColor"), 0.85f, 0.86f, 0.84f);
glUniform2f(GetUniformLoc(GetProgram(), "BrickSize"), 0.3f, 0.15f);
glUniform2f(GetUniformLoc(GetProgram(), "BrickPercent"), 0.9f, 0.85f);
glUniform3f(GetUniformLoc(GetProgram(), "LightPosition"), 1.0f, 0.1f, 5.0f);
}
void Thin3DGLShaderSet::SetMatrix4x4(const char *name, const float value[16]) {
glUseProgram(program_);
int loc = GetUniformLoc(name);
if (loc != -1) {
glUniformMatrix4fv(loc, 1, false, value);
}
}
void Thin3DGLShaderSet::SetVector(const char *name, float *value, int n) {
glUseProgram(program_);
int loc = GetUniformLoc(name);
if (loc != -1) {
switch (n) {
case 1: glUniform1fv(loc, 1, value); break;
case 2: glUniform1fv(loc, 2, value); break;
case 3: glUniform1fv(loc, 3, value); break;
case 4: glUniform1fv(loc, 4, value); break;
}
}
}
bool Thin3DGLShaderSet::Link() {
program_ = glCreateProgram();
glAttachShader(program_, vshader->GetShader());
glAttachShader(program_, fshader->GetShader());
// Bind all the common vertex data points. Mismatching ones will be ignored.
glBindAttribLocation(program_, SEM_POSITION, "Position");
glBindAttribLocation(program_, SEM_COLOR0, "Color0");
glBindAttribLocation(program_, SEM_TEXCOORD0, "TexCoord0");
glBindAttribLocation(program_, SEM_NORMAL, "Normal");
glBindAttribLocation(program_, SEM_TANGENT, "Tangent");
glBindAttribLocation(program_, SEM_BINORMAL, "Binormal");
glLinkProgram(program_);
GLint linkStatus = GL_FALSE;
glGetProgramiv(program_, GL_LINK_STATUS, &linkStatus);
if (linkStatus != GL_TRUE) {
GLint bufLength = 0;
glGetProgramiv(program_, GL_INFO_LOG_LENGTH, &bufLength);
if (bufLength) {
char* buf = new char[bufLength];
glGetProgramInfoLog(program_, bufLength, NULL, buf);
ELOG("Could not link program:\n %s", buf);
// We've thrown out the source at this point. Might want to do something about that.
#ifdef _WIN32
OutputDebugStringUTF8(buf);
#endif
delete[] buf;
}
return false;
}
// Auto-initialize samplers.
glUseProgram(program_);
for (int i = 0; i < 4; i++) {
char temp[256];
sprintf(temp, "Sampler%i", i);
int samplerLoc = GetUniformLoc(temp);
if (samplerLoc != -1) {
glUniform1i(samplerLoc, i);
}
}
// Here we could (using glGetAttribLocation) save a bitmask about which pieces of vertex data are used in the shader
// and then AND it with the vertex format bitmask later...
return true;
}
UniformState* IProgramObject::GetNewUniformState(const std::string name)
{
const size_t hash = hashString(name.c_str());
const auto it = uniformStates.emplace(hash, name);
UniformState* us = &(it.first->second);
us->SetLocation(GetUniformLoc(name));
#if DEBUG
if (us->IsLocationValid())
us->SetType(GetUniformType(us->GetLocation()));
// make sure hash is unique
for (const auto us2: uniformStates)
assert(us2.first != hash || us2.second.GetName() == name);
#endif
return us;
}
