The fast track compiler process iform vec3 LightPosition; const float SpecularContribution = 0.3; const float DiffuseContribution = 1.0 - SpecularContribution; varying float LightIntensity; varying vec2 MCposition; void main(void) { vec3 ecPosition = vec3 (gl_ModelViewMatrix * gl_Vertex); vec3 tnorm = normalize(gl_NormalMatrix * gl_Normal); vec3 lightVec = normalize(LightPosition - ecPosition); vec3 reflectVec = reflect(-lightVec, tnorm); vec3 viewVec = normalize(-ecPosition); float diffuse = max(dot(lightVec, tnorm), 0.0); float spec = 0.0; if (diffuse > 0.0) { spec = max(dot(reflectVec, viewVec), 0.0); spec = pow(spec, 16.0); } LightIntensity = DiffuseContribution * diffuse + SpecularContribution * spec; MCposition = gl_Vertex.xy; gl_Position = ftransform(); } shader string array iform vec3 LightPosition; const float SpecularContribution = 0.3; const float DiffuseContribution = 1.0 - SpecularContribution; varying float LightIntensity; varying vec2 MCposition; void main(void) { vec3 ecPosition = vec3 (gl_ModelViewMatrix * gl_Vertex); vec3 tnorm = normalize(gl_NormalMatrix * gl_Normal); vec3 lightVec = normalize(LightPosition - ecPosition); vec3 reflectVec = reflect(-lightVec, tnorm); vec3 viewVec = normalize(-ecPosition); float diffuse = max(dot(lightVec, tnorm), 0.0); float spec = 0.0; if (diffuse > 0.0) { spec = max(dot(reflectVec, viewVec), 0.0); spec = pow(spec, 16.0); } LightIntensity = DiffuseContribution * diffuse + SpecularContribution * spec; MCposition = gl_Vertex.xy; gl_Position = ftransform(); } equivalent C code Proj2 converter equivalent LLVM IR LLVM frontend … MUL R1, R2, R3 MADD R4,R1,R5 … equivalent shader object file fast track backend
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