///
// Draw triangles using the shader pair created in Init()
//
void gl_rect_draw(GL_STATE_T *p_state)
{
RectInstanceData *userData = p_state->user_data;
GLShapeInstanceData *shapeData = &userData->shape;
GLRectDisplayData *displayData = p_state->rectDisplayData;
mat4x4 projection;
mat4x4 modelView;
mat4x4 projection_scaled;
mat4x4 translation;
mat4x4 projection_final;
GLfloat vVertices[] = { 0.0f, 0.0f, 0.0f, // Position 0
0.0f, 1.0f, 0.0f, // Position 1
1.0f, 1.0f, 0.0f, // Position 2
1.0f, 0.0f, 0.0f, // Position 3
};
GLushort indices[] = { 0, 1, 2, 0, 2, 3 };
//GLushort indices[] = {1, 0, 3, 0, 2, 0, 1 };
// Use the program object
glUseProgram ( displayData->programObject );
// Load the vertex position
glVertexAttribPointer ( displayData->positionLoc, 3, GL_FLOAT,
GL_FALSE, 3 * sizeof(GLfloat), vVertices );
glEnableVertexAttribArray ( displayData->positionLoc );
mat4x4_identity(projection);
mat4x4_scale_aniso(projection_scaled, projection,
2.0/p_state->width,
-2.0/p_state->height,
1.0);
mat4x4_translate(translation, -1, 1, 0);
mat4x4_mul(projection_final, translation, projection_scaled);
mat4x4_translate(translation, shapeData->objectX, shapeData->objectY, 0.0);
mat4x4_identity(projection);
mat4x4_scale_aniso(projection_scaled, projection,
shapeData->objectWidth,
shapeData->objectHeight,
1.0);
mat4x4_mul(modelView, translation, projection_scaled);
glUniformMatrix4fv ( displayData->projectionLoc, 1, GL_FALSE, (GLfloat *)projection_final);
glUniformMatrix4fv ( displayData->modelViewLoc, 1, GL_FALSE, (GLfloat *)modelView);
glUniform3f ( displayData->colorLoc, userData->red, userData->green, userData->blue );
glDrawElements ( GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices );
//glDrawElements ( GL_TRIANGLE_STRIP, 6, GL_UNSIGNED_SHORT, indices );
}
void Tile::render(Camera *camera){
//if(interceptRect(camera->getRect())){
mat4x4_mul(*camera->getViewProjectionMatrix(), *camera->getProjectionMatrix(), *camera->getViewMatrix());
mat4x4_translate(model_matrix, (float)x, (float)y, (float)z);
//mat4x4_translate_in_place(model_matrix, camX, camY, camZ);
mat4x4_mul(model_view_projection_matrix, *camera->getViewProjectionMatrix(), model_matrix);
glUniformMatrix4fv(_modelViewUniform, 1, 0, (GLfloat*)model_view_projection_matrix);
glVertexAttribPointer(_positionSlot, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), 0);
glVertexAttribPointer(_texCoordSlot, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (GLvoid*) (sizeof(float) * 3));
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture);
glUniform1i(_textureUniform, 0);
glDrawElements(GL_TRIANGLES, sizeof(Indices)/sizeof(Indices[0]), GL_UNSIGNED_BYTE, 0);
//}else{
//}
}
void Camera_view_projection(Camera* const camera, mat4x4 matrix) {
mat4x4 position_matrix, orientation_matrix, scale_matrix;
mat4x4_translate(
position_matrix,
-camera->transform.position[0],
-camera->transform.position[1],
-camera->transform.position[2]
);
quat q;
quat_conj(q, camera->transform.orientation);
mat4x4_from_quat(orientation_matrix, q);
vec3 v = {
1.0f / camera->transform.scale[0],
1.0f / camera->transform.scale[1],
1.0f / camera->transform.scale[2]
};
mat4x4 m;
mat4x4_identity(m);
mat4x4_scale_aniso(scale_matrix, m, v[0], v[1], v[2]);
mat4x4_mul(matrix, scale_matrix, orientation_matrix);
mat4x4_mul(matrix, matrix, position_matrix);
mat4x4_mul(matrix, camera->projection, matrix);
}
void lndr_gen_mv_matrix(Lander *lander)
{
mat4x4 ident, temp, trans;
mat4x4_identity(ident);
/*
float glx = 2 / glob_game.ppw;
float gly = 2 / glob_game.pph;
*/
/*
glx *= lander->x;
gly *= lander->y;
glx--;
gly--;
*/
float glx = lander->x;
float gly = lander->y;
mat4x4_scale_aniso(temp, ident, DEFAULT_SCALE, DEFAULT_SCALE, DEFAULT_SCALE);
mat4x4_rotate_Z(temp, temp, lander->rotation);
mat4x4_translate(trans, glx, gly, 0);
mat4x4_mul(ident, trans, temp);
mat4x4_transpose(lander->mvMatrix, ident);
}
static inline void mvp_matrix(mat4x4 model_view_projection_matrix, Params params, mat4x4 view_projection_matrix)
{
mat4x4 model_matrix;
mat4x4_identity(model_matrix);
mat4x4 id;
mat4x4_identity(id);
mat4x4_translate(model_matrix, -params.anchor.x, -params.anchor.y, params.anchor.z);
mat4x4 scaled;
mat4x4_identity(scaled);
mat4x4_scale_aniso(scaled, scaled, params.scale.x, -params.scale.y, params.scale.z);
mat4x4 tmp;
mat4x4_dup(tmp, model_matrix);
mat4x4_mul(model_matrix, scaled, tmp);
mat4x4 rotate;
mat4x4_dup(rotate, id);
mat4x4_rotate_Z2(rotate, id, deg_to_radf(-params.rotation));
mat4x4_dup(tmp, model_matrix);
mat4x4_mul(model_matrix, rotate, tmp);
mat4x4_translate_independed(model_matrix, params.position.x, -params.position.y, params.position.z);
mat4x4 model_matrix3;
mat4x4_identity(model_matrix3);
mat4x4 mm;
mat4x4_mul(mm, model_matrix3, view_projection_matrix);
mat4x4_mul(model_view_projection_matrix, mm, model_matrix);
mat4x4_translate_independed(model_view_projection_matrix, 0, -y_offset/view_projection_matrix[3][3], 0);
}
int main(int argc, char** argv)
{
unsigned long frame_count = 0;
double last_time, current_time;
GLFWwindow* window;
GLuint vertex_buffer, vertex_shader, fragment_shader, program;
GLint mvp_location, vpos_location;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
window = glfwCreateWindow(640, 480, "Tearing detector", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
set_swap_interval(window, 0);
last_time = glfwGetTime();
frame_rate = 0.0;
swap_tear = (glfwExtensionSupported("WGL_EXT_swap_control_tear") ||
glfwExtensionSupported("GLX_EXT_swap_control_tear"));
glfwSetKeyCallback(window, key_callback);
glGenBuffers(1, &vertex_buffer);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
vertex_shader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL);
glCompileShader(vertex_shader);
fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL);
glCompileShader(fragment_shader);
program = glCreateProgram();
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
glLinkProgram(program);
mvp_location = glGetUniformLocation(program, "MVP");
vpos_location = glGetAttribLocation(program, "vPos");
glEnableVertexAttribArray(vpos_location);
glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
sizeof(vertices[0]), (void*) 0);
while (!glfwWindowShouldClose(window))
{
int width, height;
mat4x4 m, p, mvp;
float position = cosf((float) glfwGetTime() * 4.f) * 0.75f;
glfwGetFramebufferSize(window, &width, &height);
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT);
mat4x4_ortho(p, -1.f, 1.f, -1.f, 1.f, 0.f, 1.f);
mat4x4_translate(m, position, 0.f, 0.f);
mat4x4_mul(mvp, p, m);
glUseProgram(program);
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glfwSwapBuffers(window);
glfwPollEvents();
frame_count++;
current_time = glfwGetTime();
if (current_time - last_time > 1.0)
{
frame_rate = frame_count / (current_time - last_time);
frame_count = 0;
last_time = current_time;
update_window_title(window);
}
}
glfwTerminate();
exit(EXIT_SUCCESS);
}
void G_Tick() {
BufferTextInput();
if (G_ContainsHeightMap(*((heightmap*)((object*)G_staticMeshes.first->value)->shape), G_camPos))
printf("\rYes\n");
vec3 dir = {0, 0, 0};
float moveSpeed = G_moveSpeed * (SYS_deltaMillis / 1000.0);
float rotSpeed = G_rotSpeed * (SYS_deltaMillis / 1000.0);
if (IN_IsKeyPressed(IN_W)) dir[2] -= moveSpeed;
if (IN_IsKeyPressed(IN_A)) dir[0] -= moveSpeed;
if (IN_IsKeyPressed(IN_S)) dir[2] += moveSpeed;
if (IN_IsKeyPressed(IN_D)) dir[0] += moveSpeed;
if (IN_IsKeyPressed(IN_UP)) dir[1] += moveSpeed;
if (IN_IsKeyPressed(IN_DOWN)) dir[1] -= moveSpeed;
if (IN_IsKeyPressed(IN_RIGHT)) G_camRot[1] += rotSpeed;
if (IN_IsKeyPressed(IN_LEFT)) G_camRot[1] -= rotSpeed;
if (IN_IsKeyPressed(IN_PITCH_UP)) G_camRot[0] += rotSpeed;
if (IN_IsKeyPressed(IN_PITCH_DOWN)) G_camRot[0] -= rotSpeed;
if (IN_IsKeyPressed(IN_ACTION)) {
if (!actionHeld) {
Shoot();
actionHeld = true;
}
}else actionHeld = false;
if (IN_IsKeyPressed(IN_TOGGLE)) {
if (!toggleHeld) {
ads = ads ? false : true;
lastAdsTime = SYS_TimeMillis() / 1000.0;
toggleHeld = true;
}
}else toggleHeld = false;
if (IN_IsKeyPressed(IN_CHAT)) {
if (!chatHeld) {
IN_StartTextInput();
C_console.inputActive = true;
chatHeld = true;
}
}else chatHeld = false;
if (IN_IsKeyPressed(IN_RELOAD)) {
ReloadLevel();
}
if (G_camRot[0] > PITCH_LIMIT) G_camRot[0] = PITCH_LIMIT;
else if (G_camRot[0] < -PITCH_LIMIT) G_camRot[0] = -PITCH_LIMIT;
float c = cos(G_camRot[1]);
float s = sin(G_camRot[1]);
G_camPos[0] += -dir[2] * s + dir[0] * c;
G_camPos[2] += dir[2] * c + dir[0] * s;
G_camPos[1] += dir[1];
mat4x4_translate(G_gunMat, G_camPos[0], G_camPos[1], G_camPos[2]);
mat4x4_rotate_Y(G_gunMat, G_gunMat, G_camRot[1] + M_PI);
mat4x4_rotate_X(G_gunMat, G_gunMat, -G_camRot[0]);
double d, f;
{
termf terms[2] = {{2, 2}, {-1, 4}};
d = G_Valuef((function) {0, 1, 2, terms},
(SYS_TimeMillis() / 1000.0 - lastAdsTime) * 5);
if (ads) d = 1 - d;
}
{
termf terms[2] = {{1, 0.3}, {-1, 1}};
f = G_Valuef((function) {0, 1, 2, terms},
(SYS_TimeMillis() / 1000.0 - lastShootTime) * 5);
}
V_SetProj(fov->value * d + adsFov->value * (1 - d));
vec3 resultant = {0, 0, 0};
for (int i = 0; i < 3; i++) {
resultant[i] += defGunPos[i];
resultant[i] += hipGunPos[i] * d;
resultant[i] += fireGunPos[i] * f;
resultant[i] += hipFireGunPos[i] * d * f;
}
resultant[0] += d * 0.01 * cos(SYS_TimeMillis() / 2000.0);
resultant[1] += d * 0.005 * cos(SYS_TimeMillis() / 1500.0);
mat4x4_translate_in_place(G_gunMat, resultant[0], resultant[1], resultant[2]);
HandleSmoke();
if (IN_IsKeyPressed(IN_RELOAD)) V_reloadShaders = true;
}
int main(void)
{
Primative *edits[] = {
primative_create(CUBE, ADDITIVE),
primative_create(SPHERE, ADDITIVE),
primative_create(SPHERE, SUBTRACTIVE),
primative_create(SPHERE, ADDITIVE)
};
primative_scale(edits[0], 0.4, 1.0, 1.5);
primative_translate(edits[1], 0.2, 0, 0);
primative_translate(edits[2], -0.3, 0, 0);
primative_translate(edits[3], -0.5, 0, 0);
primative_scale(edits[3], 0.5, 0.5, 0.5);
edits[1]->blend = 0.2;
sdf_args.edits = edits;
sdf_args.num_edits = 4;
vec3 origin = {0, 0, 0};
vec3 halfDim = {1, 1, 1};
OctTree *tree = octTree_create(origin, halfDim);
octTree_populate(tree, distance);
int num_verticies = octTree_count(tree);
size_t vert_size = sizeof(Point);
fprintf(stdout, "num verts %d\n", num_verticies);
int vi = 0;
Point *verticies = malloc(num_verticies * vert_size);
octTree_get_points(tree, verticies, &vi);
GLFWwindow* window;
mat4x4 ident;
mat4x4_identity(ident);
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
window = glfwCreateWindow(640, 480, "speed dream", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
glfwSwapInterval(1);
glEnable(GL_PROGRAM_POINT_SIZE);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glfwSetKeyCallback(window, key_callback);
mat4x4 proj;
mat4x4 view;
mat4x4 matrix;
mat4x4_identity(view);
mat4x4_identity(matrix);
vec3_set(camera.pos, 0.0f, 0.0f, 0.0f);
// Create Vertex Array Object
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
// Create a Vertex Buffer Object and copy the vertex data to it
GLuint vbo;
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, num_verticies * vert_size, verticies, GL_STATIC_DRAW);
// Create and compile the shaders
GLuint vertexShader = loadShader(GL_VERTEX_SHADER, DREAM_VERT);
GLuint fragmentShader = loadShader(GL_FRAGMENT_SHADER, DREAM_FRAG);
// Link the vertex and fragment shader into a shader program
GLuint shaderProgram = glCreateProgram();
glAttachShader(shaderProgram, vertexShader);
glAttachShader(shaderProgram, fragmentShader);
glBindFragDataLocation(shaderProgram, 0, "outColor");
glLinkProgram(shaderProgram);
glUseProgram(shaderProgram);
// Specify the layout of the vertex data
GLint posAttrib = glGetAttribLocation(shaderProgram, "position");
glEnableVertexAttribArray(posAttrib);
glVertexAttribPointer(posAttrib, 3, GL_FLOAT, GL_FALSE, vert_size, 0);
GLint normAttrib = glGetAttribLocation(shaderProgram, "normal");
glEnableVertexAttribArray(normAttrib);
glVertexAttribPointer(normAttrib, 3, GL_FLOAT, GL_FALSE, vert_size, (void*)(3 * sizeof(GLfloat)));
GLint colorAttrib = glGetAttribLocation(shaderProgram, "color");
glEnableVertexAttribArray(colorAttrib);
glVertexAttribPointer(colorAttrib, 3, GL_FLOAT, GL_FALSE, vert_size, (void*)(6 * sizeof(GLfloat)));
GLint uniModel = glGetUniformLocation(shaderProgram, "model");
GLint uniView = glGetUniformLocation(shaderProgram, "view");
GLint uniProj = glGetUniformLocation(shaderProgram, "proj");
vec3 lightPos = {3.f, 0.f, 3.f};
GLint uniLightPos = glGetUniformLocation(shaderProgram, "lightPos");
glUniform3fv(uniLightPos, 1, (const GLfloat *)&lightPos);
while (!glfwWindowShouldClose(window))
{
float ratio;
int width, height;
glfwGetFramebufferSize(window, &width, &height);
ratio = width / (float) height;
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
vec4 movement = {0, 0, 0, 1};
if (glfwGetKey(window, GLFW_KEY_RIGHT) == GLFW_PRESS)
movement[0] -= 0.1;
if (glfwGetKey(window, GLFW_KEY_LEFT) == GLFW_PRESS)
movement[0] += 0.1;
if (glfwGetKey(window, GLFW_KEY_UP) == GLFW_PRESS)
movement[2] += 0.1;
if (glfwGetKey(window, GLFW_KEY_DOWN) == GLFW_PRESS)
movement[2] -= 0.1;
if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
camera.pitch -= 0.05;
if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
camera.pitch += 0.05;
if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS)
camera.yaw += 0.05;
if (glfwGetKey(window, GLFW_KEY_D) == GLFW_PRESS)
camera.yaw -= 0.05;
mat4x4 pitch_mat;
mat4x4_identity(pitch_mat);
mat4x4_rotate_X(pitch_mat, pitch_mat, camera.pitch);
mat4x4 yaw_mat;
mat4x4_identity(yaw_mat);
mat4x4_rotate_Y(yaw_mat, yaw_mat, camera.yaw);
mat4x4 inv_yaw_mat;
mat4x4_invert(inv_yaw_mat, yaw_mat);
vec4 rotated_movement;
mat4x4_mul_vec4(rotated_movement, inv_yaw_mat, movement);
camera.pos[0] += rotated_movement[0];
camera.pos[1] += rotated_movement[1];
camera.pos[2] += rotated_movement[2];
mat4x4 translation_mat;
mat4x4_translate(translation_mat, camera.pos[0], camera.pos[1], camera.pos[2]);
mat4x4_mul(view, pitch_mat, yaw_mat);
mat4x4_mul(view, view, translation_mat);
glUniformMatrix4fv(uniView, 1, GL_FALSE, (const GLfloat *)&view);
mat4x4_perspective(proj, 60 * M_PI / 180, ratio, 0.1f, 10.0f);
glUniformMatrix4fv(uniProj, 1, GL_FALSE, (const GLfloat *)&proj);
glUniformMatrix4fv(uniModel, 1, GL_FALSE, (const GLfloat *)&matrix);
glDrawArrays(GL_POINTS, 0, num_verticies);
glfwSwapBuffers(window);
glfwPollEvents();
}
glDeleteProgram(shaderProgram);
glDeleteShader(fragmentShader);
glDeleteShader(vertexShader);
glDeleteBuffers(1, &vbo);
glDeleteVertexArrays(1, &vao);
glfwDestroyWindow(window);
free(verticies);
glfwTerminate();
exit(EXIT_SUCCESS);
}
int main(int argc, char** argv)
{
int ch, samples = 4;
GLFWwindow* window;
GLuint vertex_buffer, vertex_shader, fragment_shader, program;
GLint mvp_location, vpos_location;
while ((ch = getopt(argc, argv, "hs:")) != -1)
{
switch (ch)
{
case 'h':
usage();
exit(EXIT_SUCCESS);
case 's':
samples = atoi(optarg);
break;
default:
usage();
exit(EXIT_FAILURE);
}
}
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
if (samples)
printf("Requesting MSAA with %i samples\n", samples);
else
printf("Requesting that MSAA not be available\n");
glfwWindowHint(GLFW_SAMPLES, samples);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
window = glfwCreateWindow(800, 400, "Aliasing Detector", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwSetKeyCallback(window, key_callback);
glfwMakeContextCurrent(window);
gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);
glfwSwapInterval(1);
glGetIntegerv(GL_SAMPLES, &samples);
if (samples)
printf("Context reports MSAA is available with %i samples\n", samples);
else
printf("Context reports MSAA is unavailable\n");
glGenBuffers(1, &vertex_buffer);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
vertex_shader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL);
glCompileShader(vertex_shader);
fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL);
glCompileShader(fragment_shader);
program = glCreateProgram();
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
glLinkProgram(program);
mvp_location = glGetUniformLocation(program, "MVP");
vpos_location = glGetAttribLocation(program, "vPos");
glEnableVertexAttribArray(vpos_location);
glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
sizeof(vertices[0]), (void*) 0);
while (!glfwWindowShouldClose(window))
{
float ratio;
int width, height;
mat4x4 m, p, mvp;
const double angle = glfwGetTime() * M_PI / 180.0;
glfwGetFramebufferSize(window, &width, &height);
ratio = width / (float) height;
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(program);
mat4x4_ortho(p, -ratio, ratio, -1.f, 1.f, 0.f, 1.f);
mat4x4_translate(m, -1.f, 0.f, 0.f);
mat4x4_rotate_Z(m, m, (float) angle);
mat4x4_mul(mvp, p, m);
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
glDisable(GL_MULTISAMPLE);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
mat4x4_translate(m, 1.f, 0.f, 0.f);
mat4x4_rotate_Z(m, m, (float) angle);
mat4x4_mul(mvp, p, m);
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
glEnable(GL_MULTISAMPLE);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}
///
// Draw triangles using the shader pair created in Init()
//
void gl_image_draw(GL_STATE_T *p_state)
{
ImageInstanceData *userData = p_state->user_data;
GLShapeInstanceData *shapeData = &userData->shape;
GLImageDisplayData *displayData = p_state->imageDisplayData;
mat4x4 projection;
mat4x4 modelView;
mat4x4 projection_scaled;
mat4x4 translation;
mat4x4 projection_final;
GLfloat vVertices[] = { 0.0f, 0.0f, 0.0f, // Position 0
0.0f, 0.0f, // TexCoord 0
0.0f, 1.0f, 0.0f, // Position 1
0.0f, 1.0f, // TexCoord 1
1.0f, 1.0f, 0.0f, // Position 2
1.0f, 1.0f, // TexCoord 2
1.0f, 0.0f, 0.0f, // Position 3
1.0f, 0.0f // TexCoord 3
};
GLfloat texCoords[8];
TexCoordsForRotation(shapeData->orientation, texCoords);
vVertices[3] = texCoords[0];
vVertices[4] = texCoords[1];
vVertices[8] = texCoords[2];
vVertices[9] = texCoords[3];
vVertices[13] = texCoords[4];
vVertices[14] = texCoords[5];
vVertices[18] = texCoords[6];
vVertices[19] = texCoords[7];
GLushort indices[] = { 0, 1, 2, 0, 2, 3 };
//GLushort indices[] = {1, 0, 3, 0, 2, 0, 1 };
// Use the program object
glUseProgram ( displayData->programObject );
// Load the vertex position
glVertexAttribPointer ( displayData->positionLoc, 3, GL_FLOAT,
GL_FALSE, 5 * sizeof(GLfloat), vVertices );
// Load the texture coordinate
glVertexAttribPointer ( displayData->texCoordLoc, 2, GL_FLOAT,
GL_FALSE, 5 * sizeof(GLfloat), &vVertices[3] );
glEnableVertexAttribArray ( displayData->positionLoc );
glEnableVertexAttribArray ( displayData->texCoordLoc );
// Bind the texture
glActiveTexture ( GL_TEXTURE0 );
glBindTexture ( GL_TEXTURE_2D, userData->textureId );
// Set the sampler texture unit to 0
glUniform1i ( displayData->samplerLoc, 0 );
mat4x4_identity(projection);
mat4x4_scale_aniso(projection_scaled, projection,
2.0/p_state->width,
-2.0/p_state->height,
1.0);
mat4x4_translate(translation, -1, 1, 0);
mat4x4_mul(projection_final, translation, projection_scaled);
mat4x4_translate(translation, shapeData->objectX, shapeData->objectY, 0.0);
mat4x4_identity(projection);
mat4x4_scale_aniso(projection_scaled, projection,
shapeData->objectWidth,
shapeData->objectHeight,
1.0);
mat4x4_mul(modelView, translation, projection_scaled);
glUniformMatrix4fv ( displayData->projectionLoc, 1, GL_FALSE, (GLfloat *)projection_final);
glUniformMatrix4fv ( displayData->modelViewLoc, 1, GL_FALSE, (GLfloat *)modelView);
glDrawElements ( GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices );
//glDrawElements ( GL_TRIANGLE_STRIP, 6, GL_UNSIGNED_SHORT, indices );
}
