def __init__(self, width, height):
global myobject, tex_dragon
myobject.load("dragon.sbm")
load_shaders()
ktxobj = KTXObject()
tex_dragon = ktxobj.ktx_load("pattern1.ktx")
from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.raw.GL.ARB.vertex_array_object import glGenVertexArrays, glBindVertexArray
except:
print('''
ERROR: PyOpenGL not installed properly.
''')
sys.exit()
import numpy as np
from math import cos, sin
import glm
identityMatrix = [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]
myobject = SBMObject()
ktxobject = KTXObject()
overlay = OVERLAY_()
program = GLuint(0)
mv_location = GLint(0)
mvp_location = GLint(0)
stretch_location = GLint(0)
vao = GLuint(0)
buffer = GLuint(0)
class Scene:
def __init__(self, width, height):
global program
global mv_location
global mvp_location
def __init__(self, width, height):
global render_prog
global render_vao
global tex_alien_array
global rain_buffer
global droplet_x_offset, droplet_rot_speed, droplet_fall_speed
self.width = width
self.height = height
vs = GLuint(0)
fs = GLuint(0)
vs_source = '''
#version 410 core
layout (location = 0) in int alien_index;
out VS_OUT
{
flat int alien;
vec2 tc;
} vs_out;
struct droplet_t
{
float x_offset;
float y_offset;
float orientation;
float unused;
};
layout (std140) uniform droplets
{
droplet_t droplet[256];
};
void main(void)
{
const vec2[4] position = vec2[4](vec2(-0.5, -0.5),
vec2( 0.5, -0.5),
vec2(-0.5, 0.5),
vec2( 0.5, 0.5));
vs_out.tc = position[gl_VertexID].xy + vec2(0.5);
float co = cos(droplet[alien_index].orientation);
float so = sin(droplet[alien_index].orientation);
mat2 rot = mat2(vec2(co, so),
vec2(-so, co));
vec2 pos = 0.25 * rot * position[gl_VertexID];
gl_Position = vec4(pos.x + droplet[alien_index].x_offset,
pos.y + droplet[alien_index].y_offset,
0.5, 1.0);
vs_out.alien = alien_index % 64;
}
'''
fs_source = '''
#version 410 core
layout (location = 0) out vec4 color;
in VS_OUT
{
flat int alien;
vec2 tc;
} fs_in;
uniform sampler2DArray tex_aliens;
void main(void)
{
color = texture(tex_aliens, vec3(fs_in.tc, float(fs_in.alien)));
}
'''
vs = glCreateShader(GL_VERTEX_SHADER)
glShaderSource(vs, vs_source)
glCompileShader(vs)
glGetShaderInfoLog(vs)
fs = glCreateShader(GL_FRAGMENT_SHADER)
glShaderSource(fs, fs_source)
glCompileShader(fs)
glGetShaderInfoLog(vs)
render_prog = glCreateProgram()
glAttachShader(render_prog, vs)
glAttachShader(render_prog, fs)
glLinkProgram(render_prog)
glDeleteShader(vs)
glDeleteShader(fs)
glGetProgramInfoLog(render_prog)
glGenVertexArrays(1, render_vao)
glBindVertexArray(render_vao)
ktxobj = KTXObject()
tex_alien_array = ktxobj.ktx_load("aliens.ktx")
glBindTexture(GL_TEXTURE_2D_ARRAY, tex_alien_array)
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER,
GL_LINEAR_MIPMAP_LINEAR)
glGenBuffers(1, rain_buffer)
glBindBuffer(GL_UNIFORM_BUFFER, rain_buffer)
glBufferData(GL_UNIFORM_BUFFER, 256 * 4 * 4, None, GL_DYNAMIC_DRAW)
for i in range(0, 256):
droplet_x_offset.append(random_float() * 2.0 - 1.0)
droplet_rot_speed.append(
(random_float() + 0.5) * (-3.0 if (i & 1) else 3.0))
droplet_fall_speed.append(random_float() + 0.2)
glBindVertexArray(render_vao)
glEnable(GL_BLEND)
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
def __init__(self, width, height):
self.width = width
self.height = height
B = (0x00, 0x00, 0x00, 0x00)
W = (0xFF, 0xFF, 0xFF, 0xFF)
tex_data = [
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
W,
B,
]
tex_object.append(glGenTextures(1))
#glGenTextures(1, tex_object[0]);
glBindTexture(GL_TEXTURE_2D, tex_object[0])
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGB8, 16, 16)
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 16, 16, GL_RGBA,
GL_UNSIGNED_BYTE, tex_data)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
tex_object.append(glGenTextures(1))
ktxobj = KTXObject()
tex_object[1] = ktxobj.ktx_load("pattern1.ktx")
#tex_object[1] = sb7::ktx::file::load("pattern1.ktx");
myobject.load("torus_nrms_tc.sbm")
load_shaders()
glEnable(GL_DEPTH_TEST)
glDepthFunc(GL_LEQUAL)
def __init__(self, width, height):
global grass_buffer
global grass_vao
global grass_program
global tex_grass_color
global tex_grass_length
global tex_grass_orientation
global tex_grass_bend
global uniform
self.width = width
self.height = height
grass_vs = GLuint(0)
grass_fs = GLuint(0)
grass_vs_source = '''
#version 420 core
// Incoming per vertex position
in vec4 vVertex;
// Output varyings
out vec4 color;
uniform mat4 mvpMatrix;
layout (binding = 0) uniform sampler1D grasspalette_texture;
layout (binding = 1) uniform sampler2D length_texture;
layout (binding = 2) uniform sampler2D orientation_texture;
layout (binding = 3) uniform sampler2D grasscolor_texture;
layout (binding = 4) uniform sampler2D bend_texture;
int random(int seed, int iterations)
{
int value = seed;
int n;
for (n = 0; n < iterations; n++) {
value = ((value >> 7) ^ (value << 9)) * 15485863;
}
return value;
}
vec4 random_vector(int seed)
{
int r = random(gl_InstanceID, 4);
int g = random(r, 2);
int b = random(g, 2);
int a = random(b, 2);
return vec4(float(r & 0x3FF) / 1024.0,
float(g & 0x3FF) / 1024.0,
float(b & 0x3FF) / 1024.0,
float(a & 0x3FF) / 1024.0);
}
mat4 construct_rotation_matrix(float angle)
{
float st = sin(angle);
float ct = cos(angle);
return mat4(vec4(ct, 0.0, st, 0.0),
vec4(0.0, 1.0, 0.0, 0.0),
vec4(-st, 0.0, ct, 0.0),
vec4(0.0, 0.0, 0.0, 1.0));
}
void main(void)
{
vec4 offset = vec4(float(gl_InstanceID >> 10) - 512.0,
0.0f,
float(gl_InstanceID & 0x3FF) - 512.0,
0.0f);
int number1 = random(gl_InstanceID, 3);
int number2 = random(number1, 2);
offset += vec4(float(number1 & 0xFF) / 256.0,
0.0f,
float(number2 & 0xFF) / 256.0,
0.0f);
// float angle = float(random(number2, 2) & 0x3FF) / 1024.0;
vec2 texcoord = offset.xz / 1024.0 + vec2(0.5);
// float bend_factor = float(random(number2, 7) & 0x3FF) / 1024.0;
float bend_factor = texture(bend_texture, texcoord).r * 2.0;
float bend_amount = cos(vVertex.y);
float angle = texture(orientation_texture, texcoord).r * 2.0 * 3.141592;
mat4 rot = construct_rotation_matrix(angle);
vec4 position = (rot * (vVertex + vec4(0.0, 0.0, bend_amount * bend_factor, 0.0))) + offset;
position *= vec4(1.0, texture(length_texture, texcoord).r * 0.9 + 0.3, 1.0, 1.0);
gl_Position = mvpMatrix * position; // (rot * position);
// color = vec4(random_vector(gl_InstanceID).xyz * vec3(0.1, 0.5, 0.1) + vec3(0.1, 0.4, 0.1), 1.0);
// color = texture(orientation_texture, texcoord);
color = texture(grasspalette_texture, texture(grasscolor_texture, texcoord).r) +
vec4(random_vector(gl_InstanceID).xyz * vec3(0.1, 0.5, 0.1), 1.0);
}
'''
grass_fs_source = '''
#version 420 core
in vec4 color;
out vec4 output_color;
void main(void)
{
output_color = color;
}
'''
grass_blade = [
-0.3, 0.0, 0.3, 0.0, -0.20, 1.0, 0.1, 1.3, -0.05, 2.3, 0.0, 3.3
]
glGenBuffers(1, grass_buffer)
glBindBuffer(GL_ARRAY_BUFFER, grass_buffer)
ar = array("f", grass_blade)
glBufferData(GL_ARRAY_BUFFER, ar.tostring(), GL_STATIC_DRAW)
glGenVertexArrays(1, grass_vao)
glBindVertexArray(grass_vao)
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, None)
glEnableVertexAttribArray(0)
grass_program = glCreateProgram()
grass_vs = glCreateShader(GL_VERTEX_SHADER)
grass_fs = glCreateShader(GL_FRAGMENT_SHADER)
glShaderSource(grass_vs, grass_vs_source)
glShaderSource(grass_fs, grass_fs_source)
glCompileShader(grass_vs)
glCompileShader(grass_fs)
glAttachShader(grass_program, grass_vs)
glAttachShader(grass_program, grass_fs)
glLinkProgram(grass_program)
glDeleteShader(grass_fs)
glDeleteShader(grass_vs)
uniform.mvpMatrix = glGetUniformLocation(grass_program, "mvpMatrix")
ktx = KTXObject()
glActiveTexture(GL_TEXTURE1)
tex_grass_length = ktx.ktx_load("grass_length.ktx")
glActiveTexture(GL_TEXTURE2)
tex_grass_orientation = ktx.ktx_load("grass_orientation.ktx")
glActiveTexture(GL_TEXTURE3)
tex_grass_color = ktx.ktx_load("grass_color.ktx")
glActiveTexture(GL_TEXTURE4)
tex_grass_bend = ktx.ktx_load("grass_bend.ktx")
def __init__(self, width, height):
global render_prog
global render_vao
global uniform
global tex_wall, tex_ceiling, tex_floor
self.width = width
self.height = height
vs = GLuint(0)
fs = GLuint(0)
vs_source = '''
#version 420 core
out VS_OUT
{
vec2 tc;
} vs_out;
uniform mat4 mvp;
uniform float offset;
void main(void)
{
const vec2[4] position = vec2[4](vec2(-0.5, -0.5),
vec2( 0.5, -0.5),
vec2(-0.5, 0.5),
vec2( 0.5, 0.5));
vs_out.tc = (position[gl_VertexID].xy + vec2(offset, 0.5)) * vec2(30.0, 1.0);
gl_Position = mvp * vec4(position[gl_VertexID], 0.0, 1.0);
}
'''
fs_source = '''
#version 420 core
layout (location = 0) out vec4 color;
in VS_OUT
{
vec2 tc;
} fs_in;
layout (binding = 0) uniform sampler2D tex;
void main(void)
{
color = texture(tex, fs_in.tc);
}
'''
vs = glCreateShader(GL_VERTEX_SHADER)
glShaderSource(vs, vs_source)
glCompileShader(vs)
glGetShaderInfoLog(vs)
fs = glCreateShader(GL_FRAGMENT_SHADER)
glShaderSource(fs, fs_source)
glCompileShader(fs)
glGetShaderInfoLog(vs)
render_prog = glCreateProgram()
glAttachShader(render_prog, vs)
glAttachShader(render_prog, fs)
glLinkProgram(render_prog)
glDeleteShader(vs)
glDeleteShader(fs)
glGetProgramInfoLog(render_prog)
uniform.mvp = glGetUniformLocation(render_prog, "mvp")
uniform.offset = glGetUniformLocation(render_prog, "offset")
glGenVertexArrays(1, render_vao)
glBindVertexArray(render_vao)
ktxobj = KTXObject()
tex_wall = ktxobj.ktx_load("brick.ktx")
tex_ceiling = ktxobj.ktx_load("ceiling.ktx")
tex_floor = ktxobj.ktx_load("floor.ktx")
textures = [tex_floor, tex_wall, tex_ceiling]
for i in range(0, 3):
glBindTexture(GL_TEXTURE_2D, textures[i])
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_LINEAR_MIPMAP_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glBindVertexArray(render_vao)
def __init__(self, width, height):
global texture
global program
global vao
self.width = width
self.height = height
vs = GLuint(0)
fs = GLuint(0)
vs_source = '''
#version 410 core
uniform vec2 offset;
out vec2 tex_coord;
void main(void)
{
const vec4 vertices[] = vec4[](vec4(-0.45, -0.45, 0.5, 1.0),
vec4( 0.45, -0.45, 0.5, 1.0),
vec4(-0.45, 0.45, 0.5, 1.0),
vec4( 0.45, 0.45, 0.5, 1.0));
gl_Position = vertices[gl_VertexID] + vec4(offset, 0.0, 0.0);
tex_coord = vertices[gl_VertexID].xy * 3.0 + vec2(0.45 * 3);
}
'''
fs_source = '''
#version 410 core
uniform sampler2D s;
out vec4 color;
in vec2 tex_coord;
void main(void)
{
color = texture(s, tex_coord);
}
'''
#// Generate a name for the texture
glGenTextures(1, texture)
#// Load texture from file
ktxobj = KTXObject()
texture = ktxobj.ktx_load("rightarrows.ktx")
#// Now bind it to the context using the GL_TEXTURE_2D binding point
glBindTexture(GL_TEXTURE_2D, texture)
vs = glCreateShader(GL_VERTEX_SHADER)
glShaderSource(vs, vs_source)
glCompileShader(vs)
fs = glCreateShader(GL_FRAGMENT_SHADER)
glShaderSource(fs, fs_source)
glCompileShader(fs)
program = glCreateProgram()
glAttachShader(program, vs)
glAttachShader(program, fs)
glLinkProgram(program)
glDeleteShader(vs)
glDeleteShader(fs)
glGetProgramInfoLog(program)
glGenVertexArrays(1, vao)
glBindVertexArray(vao)