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imGuIZMO.quat/examples/assets/shadersAndModel.h

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//------------------------------------------------------------------------------
// Copyright (c) 2025 Michele Morrone
// All rights reserved.
//
// https://michelemorrone.eu - https://brutpitt.com
//
// X: https://x.com/BrutPitt - GitHub: https://github.com/BrutPitt
//
// direct mail: brutpitt(at)gmail.com - me(at)michelemorrone.eu
//
// This software is distributed under the terms of the BSD 2-Clause license
//------------------------------------------------------------------------------
#pragma once
#define GLSL_VERSION "#version 450\n"
// OpenGL - Sample cube
const char* vertex_code = GLSL_VERSION R"(
layout(std140) uniform;
layout (location = 0) in vec4 pos;
layout (location = 1) in vec4 inColor;
layout (location = 2) uniform mat4 mvp;
layout (location = 0) out vec4 outColor;
out vec3 vsPos;
void main()
{
outColor = inColor;
gl_Position = mvp * pos;
}
)";
// OpenGL - Sample cube instanced (to simulate light spot)
const char* vertex_instanced = GLSL_VERSION R"(
layout(std140) uniform;
layout (location = 0) in vec4 pos;
layout (location = 1) in vec4 inColor;
layout (location = 2) uniform mat4 mvp;
layout (location = 3) uniform mat4 light;
layout (location = 0) out vec4 outColor;
void main()
{
if(gl_InstanceID==1) {
outColor = inColor;
gl_Position = mvp * pos;
}
else {
outColor = vec4(1.0, 1.0, 0.5, 1.0);
gl_Position = light * pos ;
}
}
)";
// Vulkan - Sample cube
const char* vk_vertex_code = GLSL_VERSION R"(
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
struct matrices
{
mat4 mvp;
mat4 light;
};
layout (std140, binding = 0) uniform uBuffer
{
matrices uMat;
};
layout (location = 0) in vec4 pos;
layout (location = 1) in vec4 inColor;
layout (location = 0) out vec4 outColor;
void main()
{
outColor = inColor;
gl_Position = uMat.mvp * pos;
}
)";
// Vulkan - Sample cube instanced (to simulate light spot)
const char* vk_vertex_instanced = GLSL_VERSION R"(
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
struct matrices
{
mat4 mvp;
mat4 light;
};
layout (std140, binding = 0) uniform uBuffer
{
matrices uMat;
};
layout (location = 0) in vec4 pos;
layout (location = 1) in vec4 inColor;
layout (location = 0) out vec4 outColor;
void main()
{
if(gl_InstanceIndex==1) {
outColor = inColor;
gl_Position = uMat.mvp * pos;
}
else {
outColor = vec4(1.0, 1.0, 0.5, 1.0);
gl_Position = uMat.light * pos;
}
}
)";
// Vulkan - Sample cube instanced (to simulate light spot)
const char* vk_vertex_inst_light = GLSL_VERSION R"(
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
struct matrices
{
mat4 pMat;
mat4 vMat;
mat4 mMat;
mat4 cMat;
mat4 tMat;
mat4 lMat;
vec3 lightPos;
};
layout (std140, binding = 0) uniform uBuffer
{
matrices u;
};
layout (location = 0) in vec3 pos;
layout (location = 1) in vec3 normal;
layout (location = 2) in vec3 inColor;
layout (location = 0) out vsOut {
vec4 outColor;
vec4 vsNormal;
vec4 vsPos;
vec4 vsLight;
float shin;
vec3 PoV;
};
void main()
{
vsLight = u.tMat * u.lMat * vec4(1.0); //vec4(u.lightPos, 1.0);
//vsLight = u.tMat * vec4(u.lightPos, 1.0);
PoV = (u.vMat * vec4(1.0)).xyz; //vec4(pos,1)
if(gl_InstanceIndex==1) {
outColor = vec4(inColor, 1.0);
vsNormal = u.mMat * vec4(normal, 1.0);
vsPos = u.tMat * u.mMat * vec4(pos, 1.0);
gl_Position = u.pMat * u.vMat * u.cMat * vsPos;
shin = 500.f;
}
else {
shin = 0.f;
vsNormal = u.lMat * vec4(normal, 1.0);
vsPos = u.tMat * u.lMat * vec4(pos, 1.0);
outColor = vec4(1.0, 1.0, 0.5, 1.0);
gl_Position = u.pMat * u.vMat * u.cMat * u.tMat * u.lMat * vec4(pos, 1.0);
}
}
)";
// fragment shader with (C)olor in and (C)olor out
const char* fragment_code_light = GLSL_VERSION R"(
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout (location = 0) in vsOut {
vec4 vsColor;
vec4 vsNormal;
vec4 vsPos;
vec4 vsLight;
float shin;
vec3 PoV;
};
layout (location = 0) out vec4 outColor;
const float ambientInt = 0.25;
const float specularInt = 1.;
const float shininessExp = 10.f;
void main()
{
vec3 eyeDirection = normalize(PoV+vsPos.xyz);
vec3 lightDir = normalize(vsLight.xyz-vsPos.xyz);
vec3 normal = normalize(vsNormal.xyz);
vec3 halfVec = normalize(lightDir - eyeDirection);
vec3 R = reflect(-lightDir, normal);
float diffuse = max(0.0, dot(normal, lightDir))*2.0;
float specular = pow(max(0.0, dot(halfVec, normal)), shin);
outColor = vsColor * ambientInt + vsColor * diffuse + vec4(specular * specularInt) /*- distAtten*/;
outColor = min(vec4(1.0), outColor);
}
)";
// fragment shader with (C)olor in and (C)olor out
const char* fragment_code = GLSL_VERSION R"(
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout (location = 0) in vec4 color;
layout (location = 0) out vec4 outColor;
void main()
{
outColor = color;
}
)";
const char* vk_vert_inv_z = GLSL_VERSION R"(
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
struct matrices
{
mat4 mvp;
mat4 light;
};
layout (std140, binding = 0) uniform uBuffer
{
matrices uMat;
};
layout (location = 0) in vec4 pos;
layout (location = 1) in vec4 inColor;
layout (location = 0) out vec4 outColor;
layout (location = 1) out vec4 vPos;
void main()
{
if(gl_InstanceIndex==1) {
outColor = inColor;
gl_Position = uMat.mvp * pos;
}
else {
outColor = vec4(1.0, 1.0, 0.5, 1.0);
gl_Position = uMat.light * pos;
}
vPos = gl_Position;
}
)";
const char* vk_frag_inv_z = GLSL_VERSION R"(
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout (location = 0) in vec4 color;
layout (location = 1) in vec4 vPos;
layout (location = 0) out vec4 outColor;
// far & near values are the same of perspective() call and can be passed to shader
float far = 100.0; // copied here for simplicity
float near = .1;
float linearizeDepth(float d) // draw in zNDC [0, 1]
{
return near * far / (far + d * (near - far));
}
void main()
{
outColor = color;
// invert depth value
gl_FragDepth = 1.0 - linearizeDepth(vPos.z);
}
)";
struct VertexPC
{
float x, y, z, w; // Position
float r, g, b, a; // Color
};
struct cubeVNC
{
float x, y, z, w; // Vertex
float i, j, k, l; // Normal
float r, g, b, a; // Color
};
static const VertexPC coloredCubeData0[] =
{
// blue face
{ -1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
// light blue
{ -1.0f, -1.0f, -1.0f, 1.0f, 0.7f, 0.7f, 1.0f, 1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.7f, 0.7f, 1.0f, 1.0f },
{ -1.0f, 1.0f, -1.0f, 1.0f, 0.7f, 0.7f, 1.0f, 1.0f },
{ -1.0f, 1.0f, -1.0f, 1.0f, 0.7f, 0.7f, 1.0f, 1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.7f, 0.7f, 1.0f, 1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.7f, 0.7f, 1.0f, 1.0f },
// light red
{ -1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.7f, 0.7f, 1.0f },
{ -1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 0.7f, 0.7f, 1.0f },
{ -1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 0.7f, 0.7f, 1.0f },
{ -1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 0.7f, 0.7f, 1.0f },
{ -1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 0.7f, 0.7f, 1.0f },
{ -1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 0.7f, 0.7f, 1.0f },
// red
{ 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
// green
{ 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
{ -1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
// light green
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.7f, 1.0f, 0.7f, 1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.7f, 1.0f, 0.7f, 1.0f },
{ -1.0f, -1.0f, 1.0f, 1.0f, 0.7f, 1.0f, 0.7f, 1.0f },
{ -1.0f, -1.0f, 1.0f, 1.0f, 0.7f, 1.0f, 0.7f, 1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.7f, 1.0f, 0.7f, 1.0f },
{ -1.0f, -1.0f, -1.0f, 1.0f, 0.7f, 1.0f, 0.7f, 1.0f },
};
static const cubeVNC cubeData[] =
{
// blue face
{ -1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
// light blue
{ -1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f,-1.0f, 1.0f, 0.0f, 0.5f, 0.5f, 1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f,-1.0f, 1.0f, 0.0f, 0.5f, 0.5f, 1.0f },
{ -1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f,-1.0f, 1.0f, 0.0f, 0.5f, 0.5f, 1.0f },
{ -1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f,-1.0f, 1.0f, 0.0f, 0.5f, 0.5f, 1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f,-1.0f, 1.0f, 0.0f, 0.5f, 0.5f, 1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f,-1.0f, 1.0f, 0.0f, 0.5f, 0.5f, 1.0f },
// light red
{ -1.0f, 1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.5f, 0.0f, 0.5f, 1.0f },
{ -1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.5f, 0.0f, 0.5f, 1.0f },
{ -1.0f, 1.0f, -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.5f, 0.0f, 0.5f, 1.0f },
{ -1.0f, 1.0f, -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.5f, 0.0f, 0.5f, 1.0f },
{ -1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.5f, 0.0f, 0.5f, 1.0f },
{ -1.0f, -1.0f, -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.5f, 0.0f, 0.5f, 1.0f },
// red
{ 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f },
// green
{ 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
{ -1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f },
// light green
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f,-1.0f, 0.0f, 1.0f, 0.5f, 0.5f, 0.0f, 1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f,-1.0f, 0.0f, 1.0f, 0.5f, 0.5f, 0.0f, 1.0f },
{ -1.0f, -1.0f, 1.0f, 1.0f, 0.0f,-1.0f, 0.0f, 1.0f, 0.5f, 0.5f, 0.0f, 1.0f },
{ -1.0f, -1.0f, 1.0f, 1.0f, 0.0f,-1.0f, 0.0f, 1.0f, 0.5f, 0.5f, 0.0f, 1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f,-1.0f, 0.0f, 1.0f, 0.5f, 0.5f, 0.0f, 1.0f },
{ -1.0f, -1.0f, -1.0f, 1.0f, 0.0f,-1.0f, 0.0f, 1.0f, 0.5f, 0.5f, 0.0f, 1.0f },
};
#define WGL_VERSION "#version 300 es\n"
const char* wgl_vertex_instanced = WGL_VERSION R"(
precision highp float;
precision highp int;
layout(std140) uniform;
layout (location = 0) in vec4 pos;
layout (location = 1) in vec4 inColor;
uniform mat4 mvp;
uniform mat4 light;
out vec4 vtxColor;
void main()
{
if(gl_InstanceID==1) {
vtxColor = inColor;
gl_Position = mvp * pos;
}
else {
vtxColor = vec4(1.0, 1.0, 0.5, 1.0);
gl_Position = light * pos ;
}
}
)";
const char* wgl_fragment_code = WGL_VERSION R"(
precision highp float;
precision highp int;
in vec4 vtxColor;
out vec4 outColor;
void main()
{
outColor = vtxColor;
}
)";
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