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// Gawain shader interface (C --> GLSL)
//
// This code is part of the Gawain library, with modifications
// specific to integration with Blender.
//
// Copyright 2017 Mike Erwin
//
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
// the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
#pragma once
#include "common.h"
typedef enum {
UNIFORM_NONE, // uninitialized/unknown
UNIFORM_MODELVIEW_3D, // mat4 ModelViewMatrix
UNIFORM_PROJECTION_3D, // mat4 ProjectionMatrix
UNIFORM_MVP_3D, // mat4 ModelViewProjectionMatrix
UNIFORM_NORMAL_3D, // mat3 NormalMatrix
UNIFORM_INV_NORMAL_3D, // mat3 InverseNormalMatrix
UNIFORM_MODELVIEW_2D, // mat3 ModelViewMatrix
UNIFORM_PROJECTION_2D, // mat3 ProjectionMatrix
UNIFORM_MVP_2D, // mat3 ModelViewProjectionMatrix
UNIFORM_COLOR, // vec4 color
UNIFORM_CUSTOM // custom uniform, not one of the above built-ins
} BuiltinUniform;
typedef struct {
const char* name;
GLenum gl_type;
BuiltinUniform builtin_type; // only for uniform inputs
GLint size;
GLint location;
} ShaderInput;
typedef struct {
uint16_t uniform_ct;
uint16_t attrib_ct;
ShaderInput inputs[0]; // dynamic size, uniforms followed by attribs
} ShaderInterface;
ShaderInterface* ShaderInterface_create(GLint program_id);
void ShaderInterface_discard(ShaderInterface*);
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