oryol uniform layout generation

mainVS.glsl

#version 330
#ifdef GL_ARB_shading_language_420pack
#extension GL_ARB_shading_language_420pack : require
#endif

uniform vec4 params[6];
layout(location = 0) in vec4 position;
out vec2 uv;
layout(location = 2) in vec2 texcoord0;

void main()
{
    vec2 _28 = mat2(params[4].xy, params[5].xy) * vec2(position.xy);
    vec4 pos;
    pos = vec4(_28.x, _28.y, pos.z, pos.w);
    pos.z = position.z;
    pos.w = position.w;
    gl_Position = mat4(params[0], params[1], params[2], params[3]) * pos;
    uv = texcoord0;
}

shaders.cc

//-----------------------------------------------------------------------------
// #version:49# machine generated, do not edit!
//-----------------------------------------------------------------------------
#include "Pre.h"
#include "shaders.h"

static const char* mainVS_glsl330_src = 
"#version 330\n"
"#ifdef GL_ARB_shading_language_420pack\n"
"#extension GL_ARB_shading_language_420pack : require\n"
"#endif\n"
"\n"
"uniform vec4 params[6];\n"
"layout(location = 0) in vec4 position;\n"
"out vec2 uv;\n"
"layout(location = 2) in vec2 texcoord0;\n"
"\n"
"void main()\n"
"{\n"
"    vec2 _28 = mat2(params[4].xy, params[5].xy) * vec2(position.xy);\n"
"    vec4 pos;\n"
"    pos = vec4(_28.x, _28.y, pos.z, pos.w);\n"
"    pos.z = position.z;\n"
"    pos.w = position.w;\n"
"    gl_Position = mat4(params[0], params[1], params[2], params[3]) * pos;\n"
"    uv = texcoord0;\n"
"}\n"
"\n"
;
static const char* mainFS_glsl330_src = 
"#version 330\n"
"#ifdef GL_ARB_shading_language_420pack\n"
"#extension GL_ARB_shading_language_420pack : require\n"
"#endif\n"
"\n"
"uniform sampler2D tex;\n"
"\n"
"out vec4 fragColor;\n"
"in vec2 uv;\n"
"\n"
"void main()\n"
"{\n"
"    fragColor = texture(tex, uv);\n"
"}\n"
"\n"
;
Oryol::ShaderSetup MainShader::Setup() {
    Oryol::ShaderSetup setup("MainShader");
    Oryol::VertexLayout mainVS_input;
    mainVS_input.Add(Oryol::VertexAttr::Position, Oryol::VertexFormat::Float4);
    mainVS_input.Add(Oryol::VertexAttr::TexCoord0, Oryol::VertexFormat::Float2);
    setup.SetInputLayout(mainVS_input);
    setup.SetProgramFromSources(Oryol::ShaderLang::GLSL330, mainVS_glsl330_src, mainFS_glsl330_src);
    setup.AddUniformBlock("params", "_15", 989138735, 96, params::_bindShaderStage, params::_bindSlotIndex);
    setup.AddTexture("tex", Oryol::TextureType::Texture2D, Oryol::ShaderStage::FS, 0);
    return setup;
}

shaders.h

#pragma once
//-----------------------------------------------------------------------------
/*  #version:49#
    machine generated, do not edit!
*/
#include "Gfx/GfxTypes.h"
#include "glm/vec2.hpp"
#include "glm/vec3.hpp"
#include "glm/vec4.hpp"
#include "glm/mat2x2.hpp"
#include "glm/mat3x3.hpp"
#include "glm/mat4x4.hpp"
#include "Resource/Id.h"
namespace MainShader {
    #pragma pack(push,1)
    struct params {
        static const int _bindSlotIndex = 0;
        static const Oryol::ShaderStage::Code _bindShaderStage = Oryol::ShaderStage::VS;
        static const uint32_t _layoutHash = 989138735;
        glm::mat4 viewProj;
        glm::mat2 model;
    };
    #pragma pack(pop)
    static const int tex = 0;
    extern Oryol::ShaderSetup Setup();
}