feat: web export
This commit is contained in:
orangerot
parent
2d359fb932
commit
1be303f6f6
8
Makefile
8
Makefile
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@ -1,7 +1,9 @@
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CFLAGS := -Wall -Wextra
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LDFLAGS = -lglfw -lm -lGL -I./glad/include
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domino-dungeon: main.c game.c game.h glad/src/glad.c assets/dominos.h
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SOURCES = main.c game.c game.h glad/src/glad.c assets/dominos.h
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domino-dungeon: ${SOURCES}
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$(CC) ${CFLAGS} ${LDFLAGS} -o $@ $^
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assets/dominos.h: src_build/domino_assets
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@ -10,3 +12,7 @@ assets/dominos.h: src_build/domino_assets
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src_build/domino_assets: src_build/domino_assets.c
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$(CC) -o $@ $^ -lm
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# https://gist.github.com/ousttrue/0f3a11d5d28e365b129fe08f18f4e141
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domino-dungeon.html: ${SOURCES}
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emcc -sUSE_WEBGL2=1 -sUSE_GLFW=3 -sWASM=1 -I./glad/include $(filter %.c,$^) -o $@
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3
game.c
3
game.c
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@ -1,4 +1,3 @@
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#include <glad/glad.h>
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#include <GLFW/glfw3.h>
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#include <stdint.h>
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#include <stdio.h>
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@ -40,7 +39,7 @@ void mouse_button_callback(int button, int action, int mods) {
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}
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void draw_image(decoded_image img) {
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// for (int i = 0; i < img.buf_size; i++) img.buf[i] = i;
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for (int i = 0; i < img.buf_size; i++) img.buf[i] = i;
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for (int y = 0; y < DOMINO_HEIGHT; y++) {
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for (int x = 0; x < DOMINO_WIDTH; x++) {
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113
main.c
113
main.c
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@ -4,26 +4,37 @@
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#include <glad/glad.h>
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#include <GLFW/glfw3.h>
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#include <math.h>
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#include <stdlib.h>
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#ifdef __EMSCRIPTEN__
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#include <emscripten.h>
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#endif
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#include "game.h"
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unsigned int SCR_WIDTH = 800;
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unsigned int SCR_HEIGHT = 600;
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GLFWwindow* window;
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unsigned int texture;
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GLuint shader_program;
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unsigned int VAO;
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extern void key_callback(int key, int scancode, int action, int mods);
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extern void cursor_position_callback(int xpos, int ypos);
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extern void mouse_button_callback(int button, int action, int mods);
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extern void draw_image(decoded_image img);
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uint32_t buffer[256 * 240] = {0};
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struct decoded_image canvas = {
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.width = 256,
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.height = 240,
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.buf_size = 256 * 240,
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.buf = buffer,
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};
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const char *vertex_shader_source =
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"#version 330 core\n"
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"#version 300 es\n"
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"layout (location = 0) in vec3 aPos;\n"
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"layout (location = 1) in vec3 aColor;\n"
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"layout (location = 2) in vec2 aTexCoord;\n"
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@ -40,7 +51,8 @@ const char *vertex_shader_source =
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"}\n";
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const char *fragment_shader_source =
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"#version 330 core\n"
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"#version 300 es\n"
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"precision mediump float;\n"
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"out vec4 FragColor;\n"
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"\n"
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"in vec3 ourColor;\n"
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@ -89,9 +101,47 @@ void glfw_mouse_button_callback(GLFWwindow* window, int button, int action, int
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mouse_button_callback(button, action, mods);
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}
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int main() {
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void loop() {
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if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
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glfwSetWindowShouldClose(window, 1);
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canvas.buf = malloc(canvas.buf_size * sizeof(int));
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glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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draw_image(canvas);
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// bind textures on corresponding texture units
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glActiveTexture(GL_TEXTURE);
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glBindTexture(GL_TEXTURE_2D, texture);
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float scale_x = fmin(
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(float) SCR_HEIGHT / SCR_WIDTH * (float) canvas.height / canvas.width,
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1.0
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);
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float scale_y = fmin((float) SCR_WIDTH / SCR_HEIGHT * (float) canvas.width / canvas.height,
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1.0
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);
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float m[] = {
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2.0 * scale_x, 0.0, 0.0, 0.0,
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0.0, 2.0 * scale_y, 0.0, 0.0,
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0.0, 0.0, 1.0, 0.0,
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0.0, 0.0, 0.0, 1.0,
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};
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// render container
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, canvas.width, canvas.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, canvas.buf);
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glUseProgram(shader_program);
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glUniform1i(glGetUniformLocation(shader_program, "texture1"), 0);
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glUniformMatrix4fv(glGetUniformLocation(shader_program, "transform"), 1, GL_FALSE, m);
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glBindVertexArray(VAO);
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glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
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glfwSwapBuffers(window);
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glfwPollEvents();
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}
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int main() {
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glfwInit();
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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@ -102,7 +152,7 @@ int main() {
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glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
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#endif
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GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "202-anything", NULL, NULL);
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window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "202-anything", NULL, NULL);
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if (window == NULL) {
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printf("Failed to create GLFW window\n");
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glfwTerminate();
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@ -146,7 +196,7 @@ int main() {
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return 1;
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}
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GLuint shader_program = glCreateProgram();
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shader_program = glCreateProgram();
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glAttachShader(shader_program, vertex_shader);
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glAttachShader(shader_program, fragment_shader);
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glLinkProgram(shader_program);
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@ -162,7 +212,7 @@ int main() {
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0, 1, 3, // first triangle
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1, 2, 3 // second triangle
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};
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unsigned int VBO, VAO, EBO;
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unsigned int VBO, EBO;
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glGenVertexArrays(1, &VAO);
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glGenBuffers(1, &VBO);
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glGenBuffers(1, &EBO);
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@ -185,7 +235,6 @@ int main() {
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glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(6 * sizeof(float)));
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glEnableVertexAttribArray(2);
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unsigned int texture;
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// texture 1
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// ---------
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glGenTextures(1, &texture);
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@ -202,46 +251,12 @@ int main() {
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glUseProgram(shader_program);
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glUniform1i(glGetUniformLocation(shader_program, "texture1"), 0);
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while (!glfwWindowShouldClose(window)) {
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if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
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glfwSetWindowShouldClose(window, 1);
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glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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draw_image(canvas);
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// bind textures on corresponding texture units
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glActiveTexture(GL_TEXTURE);
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glBindTexture(GL_TEXTURE_2D, texture);
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float scale_x = fmin(
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(float) SCR_HEIGHT / SCR_WIDTH * (float) canvas.height / canvas.width,
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1.0
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);
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float scale_y = fmin((float) SCR_WIDTH / SCR_HEIGHT * (float) canvas.width / canvas.height,
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1.0
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);
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float m[] = {
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2.0 * scale_x, 0.0, 0.0, 0.0,
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0.0, 2.0 * scale_y, 0.0, 0.0,
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0.0, 0.0, 1.0, 0.0,
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0.0, 0.0, 0.0, 1.0,
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};
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// render container
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, canvas.width, canvas.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, canvas.buf);
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glUseProgram(shader_program);
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glUniform1i(glGetUniformLocation(shader_program, "texture1"), 0);
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glUniformMatrix4fv(glGetUniformLocation(shader_program, "transform"), 1, GL_FALSE, m);
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glBindVertexArray(VAO);
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glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
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glfwSwapBuffers(window);
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glfwPollEvents();
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}
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#ifdef __EMSCRIPTEN__
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emscripten_set_main_loop(loop, 0, true);
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#else
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while (!glfwWindowShouldClose(window))
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loop();
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#endif
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glfwTerminate();
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