diff --git a/raylib/rlgl.go b/raylib/rlgl.go
index eeb10e12..cc24f30f 100644
--- a/raylib/rlgl.go
+++ b/raylib/rlgl.go
@@ -50,6 +50,41 @@ const (
 	FragmentShader = 0x8B30 // GL_FRAGMENT_SHADER
 	VertexShader   = 0x8B31 // GL_VERTEX_SHADER
 	ComputeShader  = 0x91B9 // GL_COMPUTE_SHADER
+
+	// GL blending factors
+	Zero                  = 0      // GL_ZERO
+	One                   = 1      // GL_ONE
+	SrcColor              = 0x0300 // GL_SRC_COLOR
+	OneMinusSrcColor      = 0x0301 // GL_ONE_MINUS_SRC_COLOR
+	SrcAlpha              = 0x0302 // GL_SRC_ALPHA
+	OneMinusSrcAlpha      = 0x0303 // GL_ONE_MINUS_SRC_ALPHA
+	DstAlpha              = 0x0304 // GL_DST_ALPHA
+	OneMinusDstAlpha      = 0x0305 // GL_ONE_MINUS_DST_ALPHA
+	DstColor              = 0x0306 // GL_DST_COLOR
+	OneMinusDstColor      = 0x0307 // GL_ONE_MINUS_DST_COLOR
+	SrcAlphaSaturate      = 0x0308 // GL_SRC_ALPHA_SATURATE
+	ConstantColor         = 0x8001 // GL_CONSTANT_COLOR
+	OneMinusConstantColor = 0x8002 // GL_ONE_MINUS_CONSTANT_COLOR
+	ConstantAlpha         = 0x8003 // GL_CONSTANT_ALPHA
+	OneMinusConstantAlpha = 0x8004 // GL_ONE_MINUS_CONSTANT_ALPHA
+
+	// GL blending functions/equations
+	FuncAdd             = 0x8006        // GL_FUNC_ADD
+	Min                 = 0x8007        // GL_MIN
+	Max                 = 0x8008        // GL_MAX
+	FuncSubtract        = 0x800A        // GL_FUNC_SUBTRACT
+	FuncReverseSubtract = 0x800B        // GL_FUNC_REVERSE_SUBTRACT
+	BlendEquation       = 0x8009        // GL_BLEND_EQUATION
+	BlendEquationRgb    = BlendEquation // GL_BLEND_EQUATION_RGB (Same as BLEND_EQUATION)
+	BlendEquationAlpha  = 0x883D        // GL_BLEND_EQUATION_ALPHA
+	BlendDstRgb         = 0x80C8        // GL_BLEND_DST_RGB
+	BlendSrcRgb         = 0x80C9        // GL_BLEND_SRC_RGB
+	BlendDstAlpha       = 0x80CA        // GL_BLEND_DST_ALPHA
+	BlendSrcAlpha       = 0x80CB        // GL_BLEND_SRC_ALPHA
+	BlendColor          = 0x8005        // GL_BLEND_COLOR
+
+	ReadFramebuffer = 0x8CA8 // GL_READ_FRAMEBUFFER
+	DrawFramebuffer = 0x8CA9 // GL_DRAW_FRAMEBUFFER
 )
 
 // VertexBuffer - Dynamic vertex buffers (position + texcoords + colors + indices arrays)