Shader::Shader(string vFile, string fFile, string gFile) {
program = glCreateProgram();
objects[SHADER_VERTEX] = GenerateShader(vFile,GL_VERTEX_SHADER);
objects[SHADER_FRAGMENT] = GenerateShader(fFile,GL_FRAGMENT_SHADER);
objects[SHADER_GEOMETRY] = 0;
if(!gFile.empty()) {
objects[SHADER_GEOMETRY] = GenerateShader(gFile,GL_GEOMETRY_SHADER);
glAttachShader(program,objects[SHADER_GEOMETRY]);
}
glAttachShader(program,objects[SHADER_VERTEX]);
glAttachShader(program,objects[SHADER_FRAGMENT]);
SetDefaultAttributes();
}
const NzUberShaderInstance* NzMaterial::GetShaderInstance(nzUInt32 flags) const
{
if (!m_shaders[flags].uberInstance)
GenerateShader(flags);
return m_shaders[flags].uberInstance;
}
const NzShader* NzMaterial::Apply(nzUInt32 shaderFlags, nzUInt8 textureUnit, nzUInt8* lastUsedUnit) const
{
const ShaderInstance& instance = m_shaders[shaderFlags];
if (!instance.uberInstance)
GenerateShader(shaderFlags);
instance.uberInstance->Activate();
if (instance.uniforms[nzMaterialUniform_AlphaThreshold] != -1)
instance.shader->SendFloat(instance.uniforms[nzMaterialUniform_AlphaThreshold], m_alphaThreshold);
if (instance.uniforms[nzMaterialUniform_Ambient] != -1)
instance.shader->SendColor(instance.uniforms[nzMaterialUniform_Ambient], m_ambientColor);
if (instance.uniforms[nzMaterialUniform_Diffuse] != -1)
instance.shader->SendColor(instance.uniforms[nzMaterialUniform_Diffuse], m_diffuseColor);
if (instance.uniforms[nzMaterialUniform_Shininess] != -1)
instance.shader->SendFloat(instance.uniforms[nzMaterialUniform_Shininess], m_shininess);
if (instance.uniforms[nzMaterialUniform_Specular] != -1)
instance.shader->SendColor(instance.uniforms[nzMaterialUniform_Specular], m_specularColor);
if (m_alphaMap && instance.uniforms[nzMaterialUniform_AlphaMap] != -1)
{
NzRenderer::SetTexture(textureUnit, m_alphaMap);
NzRenderer::SetTextureSampler(textureUnit, m_diffuseSampler);
instance.shader->SendInteger(instance.uniforms[nzMaterialUniform_AlphaMap], textureUnit);
textureUnit++;
}
if (m_diffuseMap && instance.uniforms[nzMaterialUniform_DiffuseMap] != -1)
{
NzRenderer::SetTexture(textureUnit, m_diffuseMap);
NzRenderer::SetTextureSampler(textureUnit, m_diffuseSampler);
instance.shader->SendInteger(instance.uniforms[nzMaterialUniform_DiffuseMap], textureUnit);
textureUnit++;
}
if (m_emissiveMap && instance.uniforms[nzMaterialUniform_EmissiveMap] != -1)
{
NzRenderer::SetTexture(textureUnit, m_emissiveMap);
NzRenderer::SetTextureSampler(textureUnit, m_diffuseSampler);
instance.shader->SendInteger(instance.uniforms[nzMaterialUniform_EmissiveMap], textureUnit);
textureUnit++;
}
if (m_heightMap && instance.uniforms[nzMaterialUniform_HeightMap] != -1)
{
NzRenderer::SetTexture(textureUnit, m_heightMap);
NzRenderer::SetTextureSampler(textureUnit, m_diffuseSampler);
instance.shader->SendInteger(instance.uniforms[nzMaterialUniform_HeightMap], textureUnit);
textureUnit++;
}
if (m_normalMap && instance.uniforms[nzMaterialUniform_NormalMap] != -1)
{
NzRenderer::SetTexture(textureUnit, m_normalMap);
NzRenderer::SetTextureSampler(textureUnit, m_diffuseSampler);
instance.shader->SendInteger(instance.uniforms[nzMaterialUniform_NormalMap], textureUnit);
textureUnit++;
}
if (m_specularMap && instance.uniforms[nzMaterialUniform_SpecularMap] != -1)
{
NzRenderer::SetTexture(textureUnit, m_specularMap);
NzRenderer::SetTextureSampler(textureUnit, m_specularSampler);
instance.shader->SendInteger(instance.uniforms[nzMaterialUniform_SpecularMap], textureUnit);
textureUnit++;
}
NzRenderer::SetRenderStates(m_states);
if (lastUsedUnit)
*lastUsedUnit = textureUnit;
return instance.shader;
}
