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src/context.c

@@ -1,10 +1,15 @@
 #include "main.h"
+
+#ifdef EMSCRIPTEN
+#include <GL/gl.h>
+#else
 #ifdef GLAD
 #include <GLFW/glfw3.h>
 #include <glad.h>
 #else
 #include <GL/glew.h>
 #endif
+#endif
 
 void set_clean_color_context(unsigned char r, unsigned char g, unsigned char b)
 {
@@ -15,12 +20,16 @@ void set_clean_color_context(unsigned char r, unsigned char g, unsigned char b)
 
 int init_context(void)
 {
+#ifdef EMSCRIPTEN
+	return 1;
+#else
 #ifdef GLAD
 
 	return gladLoadGLLoader((GLADloadproc)glfwGetProcAddress);
 #else
 	return glewInit();
 #endif
+#endif
 }
 
 void clean_context(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); }

src/data/shaders.h

@@ -1,6 +1,10 @@
 const char * vs =
+#ifdef EMSCRIPTEN
+	"#version 300 es\n"
+	"precision highp float;"
+#else
 	"#version 330 core\n"
-
+#endif
 	"layout (location = 0) in float aPos_x;"
 	"layout (location = 1) in float aPos_y;"
 	"layout (location = 2) in float aPos_z;"
@@ -32,8 +36,14 @@ const char * vs =
 
 	
 const char * fs_plain =
-	"#version 330 core\n"
+#ifdef EMSCRIPTEN
+	"#version 300 es\n"
 
+	"precision highp float;"
+	"precision highp sampler2DArray;"
+#else
+	"#version 330 core\n"
+#endif
 	"uniform sampler2DArray palette;"
 
 	"in float index;"
@@ -47,7 +57,13 @@ const char * fs_plain =
 	"}";
 
 const char * fs =
+#ifdef EMSCRIPTEN
+    "#version 300 es\n"
+	"precision highp float;"
+	"precision highp sampler2DArray;"
+#else
     "#version 330 core\n"
+#endif
 
     "uniform sampler2DArray palette;"
 

src/main.c

@@ -8,6 +8,10 @@
 #define WIDTH 512
 #define HEIGHT 512
 
+#ifdef EMSCRIPTEN
+#include <emscripten.h>
+#endif
+
 float *generate_data_surface(unsigned int, unsigned char *);
 float *generate_normals_surface(float *, unsigned char);
 
@@ -29,11 +33,40 @@ void mlog(char *msg)
 #endif
 }
 
+window_t window;
+mesh_t m_surface, m_axis;
+id_t shader, shader_plain;
+
+#ifndef EMSCRIPTEN
+static inline
+#endif
+void main_loop(void)
+{
+	quat_t q;
+
+	q = poll_input(window);
+	load_rot_matrix(shader, q);
+	load_rot_matrix(shader_plain, q);
+
+	clean_context();
+
+#ifndef DEBUG
+	load_mdl_matrix(shader_plain, 0, 0);
+	draw_mesh(m_axis);
+	load_mdl_matrix(shader_plain, 1, 1);
+	draw_mesh(m_axis);
+	load_mdl_matrix(shader_plain, 2, 2);
+	draw_mesh(m_axis);
+	load_mdl_matrix(shader, 0, 3);
+#else
+	load_mdl_matrix(shader_plain, 0, 3);
+#endif
+	draw_mesh(m_surface);
+}
+
 int main(void)
 {
-	id_t shader, texture, shader_plain;
-	mesh_t m_surface, m_axis;
-	window_t window;
+	id_t texture;
 
 	mlog("[VENTANA] Inicializando...\n");
 	{
@@ -117,29 +150,12 @@ int main(void)
 	}
 
 	mlog("[MAIN LOOP] Inicializando...\n");
-	while (is_open_window(window))
-	{
-		quat_t q;
-
-		q = poll_input(window);
-		load_rot_matrix(shader, q);
-		load_rot_matrix(shader_plain, q);
-
-		clean_context();
-
-#ifndef DEBUG
-		load_mdl_matrix(shader_plain, 0, 0);
-		draw_mesh(m_axis);
-		load_mdl_matrix(shader_plain, 1, 1);
-		draw_mesh(m_axis);
-		load_mdl_matrix(shader_plain, 2, 2);
-		draw_mesh(m_axis);
-		load_mdl_matrix(shader, 0, 3);
+#ifdef EMSCRIPTEN
+	emscripten_set_main_loop(&main_loop, 0, 1);
 #else
-		load_mdl_matrix(shader_plain, 0, 3);
+	while (is_open_window(window))
+		main_loop();
 #endif
-		draw_mesh(m_surface);
-	}
 	mlog("[MAIN LOOP] Terminando...\n");
 
 	mlog("[MESH] Destruyendo...\n");