static void window_draw(struct window *window)
{
	struct mat4 matrix, modelview, projection, transform, result;
	GLfloat aspect;

	aspect = window->width / (GLfloat)window->height;

	mat4_perspective(&projection, 35.0f, aspect, 1.0f, 1024.0f);
	mat4_identity(&modelview);

	mat4_rotate_x(&transform, x);
	mat4_multiply(&result, &modelview, &transform);
	mat4_rotate_y(&transform, y);
	mat4_multiply(&modelview, &result, &transform);
	mat4_rotate_z(&transform, z);
	mat4_multiply(&result, &modelview, &transform);
	mat4_translate(&transform, 0.0f, 0.0f, -2.0f);
	mat4_multiply(&modelview, &transform, &result);

	mat4_multiply(&matrix, &projection, &modelview);
	glUniformMatrix4fv(mvp, 1, GL_FALSE, (GLfloat *)&matrix);

	glViewport(0, 0, window->width, window->height);
	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	glDrawElements(GL_TRIANGLES, ARRAY_SIZE(indices), GL_UNSIGNED_SHORT,
		       indices);

	eglSwapBuffers(window->egl.display, window->egl.surface);

	x += 0.3f;
	y += 0.2f;
	z += 0.4f;
}
Exemple #2
0
Mat4 Entity_GetModelTransform(Entity* entity)
{
    Mat4 temp;
    Mat4 rotation = mat4_rotate_x(entity->rotX);
    temp = mat4_rotate_y(entity->rotY);
    rotation = mat4_mul(&rotation, &temp);
    temp = mat4_rotate_z(entity->rotZ);
    rotation = mat4_mul(&rotation, &temp);

    temp = mat4_translate(&entity->position);

    Mat4 modelTransform = mat4_mul(&temp, &rotation);
    temp = mat4_scale(entity->scale[0], entity->scale[1], entity->scale[2]);
    modelTransform = mat4_mul(&modelTransform, &temp);

    return modelTransform;
}
Exemple #3
0
static void window_draw(struct window *window)
{
	static const GLfloat vertices[] = {
		/* front */
		-0.5f, -0.5f,  0.5f, 1.0f,
		 0.5f, -0.5f,  0.5f, 1.0f,
		 0.5f,  0.5f,  0.5f, 1.0f,
		-0.5f,  0.5f,  0.5f, 1.0f,
		/* back */
		-0.5f, -0.5f, -0.5f, 1.0f,
		 0.5f, -0.5f, -0.5f, 1.0f,
		 0.5f,  0.5f, -0.5f, 1.0f,
		-0.5f,  0.5f, -0.5f, 1.0f,
		/* left */
		-0.5f, -0.5f,  0.5f, 1.0f,
		-0.5f,  0.5f,  0.5f, 1.0f,
		-0.5f,  0.5f, -0.5f, 1.0f,
		-0.5f, -0.5f, -0.5f, 1.0f,
		/* right */
		 0.5f, -0.5f,  0.5f, 1.0f,
		 0.5f,  0.5f,  0.5f, 1.0f,
		 0.5f,  0.5f, -0.5f, 1.0f,
		 0.5f, -0.5f, -0.5f, 1.0f,
		/* top */
		-0.5f,  0.5f,  0.5f, 1.0f,
		 0.5f,  0.5f,  0.5f, 1.0f,
		 0.5f,  0.5f, -0.5f, 1.0f,
		-0.5f,  0.5f, -0.5f, 1.0f,
		/* bottom */
		-0.5f, -0.5f,  0.5f, 1.0f,
		 0.5f, -0.5f,  0.5f, 1.0f,
		 0.5f, -0.5f, -0.5f, 1.0f,
		-0.5f, -0.5f, -0.5f, 1.0f,
	};

	static const GLfloat colors[] = {
		/* front */
		1.0f, 0.0f, 0.0f, 1.0f,
		1.0f, 0.0f, 0.0f, 1.0f,
		1.0f, 0.0f, 0.0f, 1.0f,
		1.0f, 0.0f, 0.0f, 1.0f,
		/* back */
		1.0f, 1.0f, 0.0f, 1.0f,
		1.0f, 1.0f, 0.0f, 1.0f,
		1.0f, 1.0f, 0.0f, 1.0f,
		1.0f, 1.0f, 0.0f, 1.0f,
		/* left */
		0.0f, 0.0f, 1.0f, 1.0f,
		0.0f, 0.0f, 1.0f, 1.0f,
		0.0f, 0.0f, 1.0f, 1.0f,
		0.0f, 0.0f, 1.0f, 1.0f,
		/* right */
		1.0f, 0.0f, 1.0f, 1.0f,
		1.0f, 0.0f, 1.0f, 1.0f,
		1.0f, 0.0f, 1.0f, 1.0f,
		1.0f, 0.0f, 1.0f, 1.0f,
		/* top */
		0.0f, 1.0f, 0.0f, 1.0f,
		0.0f, 1.0f, 0.0f, 1.0f,
		0.0f, 1.0f, 0.0f, 1.0f,
		0.0f, 1.0f, 0.0f, 1.0f,
		/* bottom */
		1.0f, 0.5f, 0.0f, 1.0f,
		1.0f, 0.5f, 0.0f, 1.0f,
		1.0f, 0.5f, 0.0f, 1.0f,
		1.0f, 0.5f, 0.0f, 1.0f,
	};

	static const GLushort indices[] = {
		/* front */
		 0,  1,  2,
		 0,  2,  3,
		/* back */
		 4,  5,  6,
		 4,  6,  7,
		/* left */
		 8,  9, 10,
		 8, 10, 11,
		/* right */
		12, 13, 14,
		12, 14, 15,
		/* top */
		16, 17, 18,
		16, 18, 19,
		/* bottom */
		20, 21, 22,
		20, 22, 23,
	};

	struct mat4 matrix, modelview, projection, transform, result;
	static GLfloat x = 0.0f, y = 0.0f, z = 0.0f;
	GLint position, color, mvp;
	GLuint vs, fs, program;
	GLfloat aspect;

	vs = glsl_shader_load(GL_VERTEX_SHADER, vertex_shader,
			      ARRAY_SIZE(vertex_shader));
	fs = glsl_shader_load(GL_FRAGMENT_SHADER, fragment_shader,
			      ARRAY_SIZE(fragment_shader));
	program = glsl_program_create(vs, fs);
	glsl_program_link(program);
	glUseProgram(program);

	position = glGetAttribLocation(program, "position");
	color = glGetAttribLocation(program, "color");
	mvp = glGetUniformLocation(program, "mvp");

	aspect = window->width / (GLfloat)window->height;

	mat4_perspective(&projection, 60.0f, aspect, 1.0f, 1024.0f);
	mat4_identity(&modelview);

	mat4_rotate_x(&transform, x);
	mat4_multiply(&result, &modelview, &transform);
	mat4_rotate_y(&transform, y);
	mat4_multiply(&modelview, &result, &transform);
	mat4_rotate_z(&transform, z);
	mat4_multiply(&result, &modelview, &transform);
	mat4_translate(&transform, 0.0f, 0.0f, -2.0f);
	mat4_multiply(&modelview, &transform, &result);

	mat4_multiply(&matrix, &projection, &modelview);
	glUniformMatrix4fv(mvp, 1, GL_FALSE, (GLfloat *)&matrix);

	glViewport(0, 0, window->width, window->height);
	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	glEnable(GL_DEPTH_TEST);
	glDepthFunc(GL_LEQUAL);

	glVertexAttribPointer(position, 4, GL_FLOAT, GL_FALSE,
			      4 * sizeof(GLfloat), vertices);
	glEnableVertexAttribArray(position);

	glVertexAttribPointer(color, 4, GL_FLOAT, GL_FALSE,
			      4 * sizeof(GLfloat), colors);
	glEnableVertexAttribArray(color);

	glDrawElements(GL_TRIANGLES, ARRAY_SIZE(indices), GL_UNSIGNED_SHORT,
		       indices);

	eglSwapBuffers(window->egl.display, window->egl.surface);

	x += 0.3f;
	y += 0.2f;
	z += 0.4f;
}