Copy changes from the no-history fork, generated back in 2023

Original commit message:
> commit f138311d2d2e0cc9ba0496d523bb46f2c1c9fb73
> Author: rtk0c <[email protected]>
> Date:   Wed Sep 20 23:58:58 2023 -0700
>
>     Copy from the PlasticSCM repo, replace vendored glm wtih conan

In reality, this also introduced a few uncommitted changes in the
original PlasticSCM repo. See the modified and new files in this patch.

1 files changed, 0 insertions, 170 deletions

diff --git a/3rdparty/glfw/source/examples/triangle-opengles.c b/3rdparty/glfw/source/examples/triangle-opengles.c
deleted file mode 100644
index 03eb026..0000000
--- a/3rdparty/glfw/source/examples/triangle-opengles.c
+++ /dev/null
@@ -1,170 +0,0 @@
-//========================================================================
-// OpenGL ES 2.0 triangle example
-// Copyright (c) Camilla Löwy <[email protected]>
-//
-// This software is provided 'as-is', without any express or implied
-// warranty. In no event will the authors be held liable for any damages
-// arising from the use of this software.
-//
-// Permission is granted to anyone to use this software for any purpose,
-// including commercial applications, and to alter it and redistribute it
-// freely, subject to the following restrictions:
-//
-// 1. The origin of this software must not be misrepresented; you must not
-//    claim that you wrote the original software. If you use this software
-//    in a product, an acknowledgment in the product documentation would
-//    be appreciated but is not required.
-//
-// 2. Altered source versions must be plainly marked as such, and must not
-//    be misrepresented as being the original software.
-//
-// 3. This notice may not be removed or altered from any source
-//    distribution.
-//
-//========================================================================
-
-#define GLAD_GLES2_IMPLEMENTATION
-#include <glad/gles2.h>
-#define GLFW_INCLUDE_NONE
-#include <GLFW/glfw3.h>
-
-#include "linmath.h"
-
-#include <stdlib.h>
-#include <stddef.h>
-#include <stdio.h>
-
-typedef struct Vertex
-{
-    vec2 pos;
-    vec3 col;
-} Vertex;
-
-static const Vertex vertices[3] =
-{
-    { { -0.6f, -0.4f }, { 1.f, 0.f, 0.f } },
-    { {  0.6f, -0.4f }, { 0.f, 1.f, 0.f } },
-    { {   0.f,  0.6f }, { 0.f, 0.f, 1.f } }
-};
-
-static const char* vertex_shader_text =
-"#version 100\n"
-"precision mediump float;\n"
-"uniform mat4 MVP;\n"
-"attribute vec3 vCol;\n"
-"attribute vec2 vPos;\n"
-"varying vec3 color;\n"
-"void main()\n"
-"{\n"
-"    gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n"
-"    color = vCol;\n"
-"}\n";
-
-static const char* fragment_shader_text =
-"#version 100\n"
-"precision mediump float;\n"
-"varying vec3 color;\n"
-"void main()\n"
-"{\n"
-"    gl_FragColor = vec4(color, 1.0);\n"
-"}\n";
-
-static void error_callback(int error, const char* description)
-{
-    fprintf(stderr, "GLFW Error: %s\n", description);
-}
-
-static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
-{
-    if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
-        glfwSetWindowShouldClose(window, GLFW_TRUE);
-}
-
-int main(void)
-{
-    glfwSetErrorCallback(error_callback);
-
-    if (!glfwInit())
-        exit(EXIT_FAILURE);
-
-    glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
-    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
-    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
-    glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_EGL_CONTEXT_API);
-
-    GLFWwindow* window = glfwCreateWindow(640, 480, "OpenGL ES 2.0 Triangle (EGL)", NULL, NULL);
-    if (!window)
-    {
-        glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_NATIVE_CONTEXT_API);
-        window = glfwCreateWindow(640, 480, "OpenGL ES 2.0 Triangle", NULL, NULL);
-        if (!window)
-        {
-            glfwTerminate();
-            exit(EXIT_FAILURE);
-        }
-    }
-
-    glfwSetKeyCallback(window, key_callback);
-
-    glfwMakeContextCurrent(window);
-    gladLoadGLES2(glfwGetProcAddress);
-    glfwSwapInterval(1);
-
-    GLuint vertex_buffer;
-    glGenBuffers(1, &vertex_buffer);
-    glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
-    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
-
-    const GLuint vertex_shader = glCreateShader(GL_VERTEX_SHADER);
-    glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL);
-    glCompileShader(vertex_shader);
-
-    const GLuint fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
-    glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL);
-    glCompileShader(fragment_shader);
-
-    const GLuint program = glCreateProgram();
-    glAttachShader(program, vertex_shader);
-    glAttachShader(program, fragment_shader);
-    glLinkProgram(program);
-
-    const GLint mvp_location = glGetUniformLocation(program, "MVP");
-    const GLint vpos_location = glGetAttribLocation(program, "vPos");
-    const GLint vcol_location = glGetAttribLocation(program, "vCol");
-
-    glEnableVertexAttribArray(vpos_location);
-    glEnableVertexAttribArray(vcol_location);
-    glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
-                          sizeof(Vertex), (void*) offsetof(Vertex, pos));
-    glVertexAttribPointer(vcol_location, 3, GL_FLOAT, GL_FALSE,
-                          sizeof(Vertex), (void*) offsetof(Vertex, col));
-
-    while (!glfwWindowShouldClose(window))
-    {
-        int width, height;
-        glfwGetFramebufferSize(window, &width, &height);
-        const float ratio = width / (float) height;
-
-        glViewport(0, 0, width, height);
-        glClear(GL_COLOR_BUFFER_BIT);
-
-        mat4x4 m, p, mvp;
-        mat4x4_identity(m);
-        mat4x4_rotate_Z(m, m, (float) glfwGetTime());
-        mat4x4_ortho(p, -ratio, ratio, -1.f, 1.f, 1.f, -1.f);
-        mat4x4_mul(mvp, p, m);
-
-        glUseProgram(program);
-        glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) &mvp);
-        glDrawArrays(GL_TRIANGLES, 0, 3);
-
-        glfwSwapBuffers(window);
-        glfwPollEvents();
-    }
-
-    glfwDestroyWindow(window);
-
-    glfwTerminate();
-    exit(EXIT_SUCCESS);
-}
-