void CSprite::Render(vec3f camPos)
{
vec4f pos[4];
float h2 = height * 0.5f;
float w2 = width * 0.5f;
pos[0].set(center.x - w2, center.y - h2, center.z, 1.0f);
pos[1].set(center.x + w2, center.y - h2, center.z, 1.0f);
pos[2].set(center.x + w2, center.y + h2, center.z, 1.0f);
pos[3].set(center.x - w2, center.y + h2, center.z, 1.0f);
vec3f look = camPos - center;
look.normalize();
vec3f up(0.0f, 1.0f, 0.0f);
vec3f right = up.crossProd(look);
up = look.crossProd(right);
mat4f m, t, nt, f, R;
R.loadZRotation(angle);
m.m[0] = right.x; m.m[4] = up.x; m.m[8] = look.x; m.m[12] = 0.0f;
m.m[1] = right.y; m.m[5] = up.y; m.m[9] = look.y; m.m[13] = 0.0f;
m.m[2] = right.z; m.m[6] = up.z; m.m[10] = look.z; m.m[14] = 0.0f;
m.m[3] = 0.0f; m.m[7] = 0.0f; m.m[11] = 0.0f; m.m[15] = 1.0f;
m *= R;
nt.loadTranslation(-center.x, -center.y, -center.z);
t.loadTranslation(center.x, center.y, center.z);
float verts[20] = { pos[0].x, pos[0].y, pos[0].z, 0.0f, 0.0f,
pos[1].x, pos[1].y, pos[1].z, 1.0f, 0.0f,
pos[2].x, pos[2].y, pos[2].z, 1.0f, 1.0f,
pos[3].x, pos[3].y, pos[3].z, 0.0f, 1.0f };
mat4_mul_mat4(m.m, nt.m, f.m);
mat4_mul_mat4(t.m, f.m, m.m);
pushMatrix(MATRIX_MODEL, m);
unsigned int indices[6] = { 0, 1, 2, 0, 2, 3 };
float color[4] = {r, g, b, a};
g_pTexturedEffect->Bind();
bool invert = false;
g_pTexturedEffect->BindBool("invert", invert);
g_pTexturedEffect->BindFloat("globalColor", color, 4);
g_pTexturedEffect->BindStateMatrix("MVP", MATRIX_MODEL | MATRIX_VIEW | MATRIX_PROJECTION);
g_pTexturedEffect->BindTexture("s0", texID);
glEnableVertexAttribArray(LOC_POSITION);
glEnableVertexAttribArray(LOC_TEXCOORD0);
glVertexAttribPointer(LOC_POSITION, 3, GL_FLOAT, GL_FALSE, 20, verts);
glVertexAttribPointer(LOC_TEXCOORD0, 2, GL_FLOAT, GL_TRUE, 20, (float*)&verts[3]);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, indices);
glDisableVertexAttribArray(LOC_POSITION);
glDisableVertexAttribArray(LOC_TEXCOORD0);
g_pTexturedEffect->EvictTextures();
g_pTexturedEffect->Unbind();
popMatrix(MATRIX_MODEL);
}
void DebugEmitterComponent::_CalculateNodeTransform(std::stack<mat4*>& stack, mat4* res)
{
if (stack.size() == 1)
{
auto top = stack.top();
stack.pop();
mat4 result;
mat4_copy(result, *top);
mat4_copy(*res, result);
float a = 0;
}
else
{
mat4 childRes;
auto top = stack.top();
stack.pop();
_CalculateNodeTransform(stack, &childRes);
mat4 result;
mat4_mul_mat4(*top, childRes, result);
mat4_copy(*res, result);
float a = 0;
}
}
void CShaderObject::BindStateMatrix(const char* paramName, unsigned int matrix)
{
// Check and validate bind status //
if(!m_bIsBound)
return;
// Get and validate bind point //
int bind_point = glGetUniformLocation(m_shaderObject, paramName);
if(bind_point < 0)
return;
mat4 MV, P, F;
mat4_load_identity(MV);
mat4_load_identity(P);
if(matrix & MATRIX_MODELVIEW)
glGetFloatv(GL_MODELVIEW_MATRIX, MV);
if(matrix & MATRIX_PROJECTION)
glGetFloatv(GL_PROJECTION_MATRIX, P);
mat4_mul_mat4(P, MV, F);
if(matrix & MATRIX_TRANSPOSE)
mat4_transpose(F);
glUniformMatrix4fv(bind_point, 1, false, F);
}
static void upload_gbuffer_uniforms(GLuint shdr, float viewport[2], mat4* view, mat4* proj)
{
glUniform1i(glGetUniformLocation(shdr, "gbuf.depth"), 0);
glUniform1i(glGetUniformLocation(shdr, "gbuf.normal"), 1);
glUniform1i(glGetUniformLocation(shdr, "gbuf.albedo"), 2);
glUniform1i(glGetUniformLocation(shdr, "gbuf.roughness_metallic"), 3);
glUniform2fv(glGetUniformLocation(shdr, "u_screen"), 1, viewport);
mat4 inv_view_proj = mat4_inverse(mat4_mul_mat4(*proj, *view));
glUniformMatrix4fv(glGetUniformLocation(shdr, "u_inv_view_proj"), 1, GL_FALSE, inv_view_proj.m);
}
animation* ani_load_file(char* filename) {
int state = STATE_LOAD_EMPTY;
animation* a = animation_new();
skeleton* base = skeleton_new();
frame* f = NULL;
SDL_RWops* file = SDL_RWFromFile(filename, "r");
if(file == NULL) {
error("Could not load file %s", filename);
}
char line[1024];
while(SDL_RWreadline(file, line, 1024)) {
if (state == STATE_LOAD_EMPTY) {
int version;
if (sscanf(line, "version %i", &version) > 0) {
if (version != 1) {
error("Can't load ani file '%s'. Don't know how to load version %i\n", filename, version);
}
}
if (strstr(line, "nodes")) {
state = STATE_LOAD_NODES;
}
if (strstr(line, "skeleton")) {
state = STATE_LOAD_SKELETON;
}
}
else if (state == STATE_LOAD_NODES) {
char name[1024];
int id, parent;
if (sscanf(line, "%i \"%[^\"]\" %i", &id, name, &parent) == 3) {
skeleton_joint_add(base, name, parent);
}
if (strstr(line, "end")) {
state = STATE_LOAD_EMPTY;
}
}
else if (state == STATE_LOAD_SKELETON) {
float time;
if (sscanf(line, "time %f", &time) == 1) {
f = animation_add_frame(a, base->rest_pose);
}
int id;
float x, y, z, rx, ry, rz;
if (sscanf(line, "%i %f %f %f %f %f %f", &id, &x, &y, &z, &rx, &ry, &rz) > 0) {
f->joint_positions[id] = vec3_new(x, z, y);
mat4 rotation = mat4_rotation_euler(rx, ry, rz);
mat4 handedflip = mat4_new(1,0,0,0,
0,0,1,0,
0,1,0,0,
0,0,0,1);
rotation = mat4_mul_mat4(handedflip, rotation);
rotation = mat4_mul_mat4(rotation, handedflip);
rotation = mat4_transpose(rotation);
f->joint_rotations[id] = mat4_to_quat(rotation);
}
if (strstr(line, "end")) {
state = STATE_LOAD_EMPTY;
}
}
}
SDL_RWclose(file);
skeleton_delete(base);
return a;
}
mat4 camera_view_proj_matrix(camera* c, float aspect_ratio) {
mat4 view = camera_view_matrix(c);
mat4 proj = camera_proj_matrix(c, aspect_ratio);
return mat4_mul_mat4(view, proj);
}
mat4 camera_view_proj_matrix(camera* c) {
mat4 view = camera_view_matrix(c);
mat4 proj = camera_proj_matrix(c);
return mat4_mul_mat4(view, proj);
}
