private void SetTextureUniforms(Shader shader, GenericMaterial previousMaterial)
{
int textureIndex = InitialTextureUnit;
for (int i = 0; i < textureUniformNames.Count; i++)
{
var name = textureUniformNames[i];
var value = textureValues[i];
// If the same texture is bound to this texture unit, we don't need to set it again.
bool shouldSkipTextureSet = previousMaterial != null &&
i < previousMaterial.textureUniformNames.Count &&
previousMaterial.textureUniformNames[i] == name &&
previousMaterial.textureValues[i] == value;
if (!shouldSkipTextureSet)
{
shader.SetTexture(name, value, textureIndex);
}
// Even if the textures are the same, the bound sampler may be different.
if (samplerValues[i] != null)
{
samplerValues[i].Bind(textureIndex);
}
textureIndex++;
}
}
public void SetMaterialUniforms(Shader shader, GenericMaterial previousMaterial)
{
// TODO: Rework default texture creation.
if (defaultTextures == null)
{
defaultTextures = new Resources.DefaultTextures();
}
if (genericMaterial == null)
{
genericMaterial = Material.CreateGenericMaterial();
}
genericMaterial.SetShaderUniforms(shader, previousMaterial);
if (uniformBlock == null)
{
uniformBlock = new UniformBlock(shader, "MaterialParams")
{
BlockBinding = 1
};
Material.AddMaterialParams(uniformBlock);
}
// This needs to be updated more than once.
Material.AddDebugParams(uniformBlock);
uniformBlock.BindBlock(shader);
}
/// <summary>
/// Sets uniform values for all the added uniform values.
/// Redundant setting of texture uniform is skipped to improve performance.
/// </summary>
/// <param name="shader">The shader whose uniforms will be set</param>
/// <param name="previousMaterial">The previous material used to set this shader's uniforms</param>
public void SetShaderUniforms(Shader shader, GenericMaterial previousMaterial = null)
{
SetIntUniforms(shader);
SetFloatUniforms(shader);
SetVec2Uniforms(shader);
SetVec3Uniforms(shader);
SetVec4Uniforms(shader);
SetMat4Uniforms(shader);
SetTextureUniforms(shader, previousMaterial);
}