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#include <string.h>
#include <time.h>
/* TODO: REMOVE THIS INCLUSION */
#include <daw/daw.h>
#include <daw/types.h>
#include <daw/logging.h>
#define ENGINE_RENDERING_WINDOW_H_EXCLUDE_EXTERNS
#include <daw/window.h>
#undef ENGINE_RENDERING_WINDOW_H_EXCLUDE_EXTERNS
#undef GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <cglm/ivec2.h>
extern Instance* GLOBAL_PLATFORM;
static inline u64 platform_get_time_usec(void) {
struct timespec t;
int res = clock_gettime(CLOCK_MONOTONIC, &t);
if (res != 0) {
// TODO: Check errno
WARN("Failed to get system time");
}
return (u64)(t.tv_sec * 1000000 + t.tv_nsec / 1000);
}
/* wrapper to get time in ms */
u64 (*get_time)(void) = platform_get_time_usec;
#define DAW_WINDOW_VSYNC (1 << 0)
#define DAW_WINDOW_FULLSCREEN (1 << 1)
#define DAW_WINDOW_RESIZEABLE (1 << 2)
// Wrapper to get a specific window and set up related structures.
// What the fuck is this doing here.
Window* Window_new(const struct Platform* p, const char *restrict title, Window_framework framework, Window_renderer renderer, ivec2 size, u32 flags) {
Window* w = NULL;
switch (framework) {
case WINDOW_FRAMEWORK_GLFW:
switch (renderer) {
case WINDOW_RENDERER_OPENGL:
/* For now, pass instance as NULL, fix it once all the necessary bs is
* out of struct Instance */
w = p->window_init(title, size, flags);
// Manually reset bindings et. al.
w->bindings = NULL;
w->bindings_sz = 0;
w->bindings_len = 0;
w->render_targets = NULL;
return w;
default:
ERROR("Unsupported renderer.");
}
break;
default:
ERROR("Unsupported framework.");
}
return NULL;
}
void window_reset_cameras(Window* w, RenderTargets* restrict targets) {
// Question, would it be better to check both callbacks and continue early,
// instead of resizing the texture first, then check the camera callback?
for (usize i = 0; i < targets->framebuffer_len; i++) {
//if (targets->framebuffer_size_callback[i] == NULL) continue;
//ivec2 newsz;
//targets->framebuffer_size_callback[i](&newsz, w->windowsize);
// Destroy & Create framebuffers (and related buffers?)
if (targets->camera_reset_callback[i] == NULL) continue;
targets->camera_reset_callback[i](targets->cam[i], w->windowsize);
}
}
//void window_reset_texture_sizes(Window* w, RenderTargets* restrict targets) {
// // Question, would it be more efficient to just wipe all of them at once
// // instead of doing this? Not all are necessarily deleted.
// for (usize i = 0; i < targets->texture_len; i++) {
// if (targets->framebuffer_size_callback[i] == NULL) continue;
//
// ivec2 newsz;
// targets->framebuffer_size_callback[i](&newsz, w->windowsize);
//
// r_destroy_framebuffers(w->context, targets->framebuffer, 1);
// r_create_framebuffers(w->context, &targets->framebuffer[i], &targets->framebuffer_parameters[i].framebuffer_type, &newsz, 1);
// }
//}
void get_mousepos(double *x, double *y) {
Window* w = GLOBAL_PLATFORM->window;
switch(w->framework) {
case WINDOW_FRAMEWORK_GLFW:
glfwGetCursorPos(GLOBAL_PLATFORM->window->window, x, y);
break;
default:
ERROR("get_mouse_pos not implemented for chosen framework.");
}
}
void window_get_size(ivec2* dst) {
glm_ivec2_copy(GLOBAL_PLATFORM->window->windowsize, *dst);
}
// Assume framebuffer_len and texture_len is already set
void window_init_renderstack(Window *restrict w,
usize num_fbuf, usize num_buf,
FramebufferParameters *restrict fb_params,
u32 *restrict buffer_params
) {
ASSERT(w != NULL);
ASSERT(fb_params != NULL);
ASSERT(buffer_params != NULL);
RenderTargets *t = NULL;
void* allocation = malloc(
sizeof(RenderTargets) +
sizeof(*t->framebuffer) * num_fbuf +
sizeof(*t->framebuffer_parameters) * num_fbuf +
sizeof(*t->cam) * num_fbuf +
sizeof(*t->camera_reset_callback) * num_fbuf +
sizeof(*t->buffer) * num_buf +
sizeof(*t->buffer_parameters) * num_buf
// TODO: callbacks
);
#define ADVANCE_PTR(target, count)\
t->target = (void*)((u64)allocation + acc); \
acc += sizeof(*t->target) * count
t = allocation;
t->framebuffer_len = num_fbuf;
t->buffer_len = num_buf;
u64 acc = sizeof(RenderTargets);
ADVANCE_PTR(framebuffer, num_fbuf);
ADVANCE_PTR(framebuffer_parameters, num_fbuf);
ADVANCE_PTR(cam, num_fbuf);
ADVANCE_PTR(camera_reset_callback, num_fbuf);
ADVANCE_PTR(buffer, num_buf);
ADVANCE_PTR(buffer_parameters, num_buf);
// TODO: callbacks
#undef ADVANCE_PTR
memcpy(t->framebuffer_parameters, fb_params, sizeof(*t->framebuffer_parameters) * num_fbuf);
memcpy(t->buffer_parameters, buffer_params, sizeof(*t->buffer_parameters) * num_buf);
r_create_framebuffers(w->context, &t->framebuffer[0], num_fbuf);
// Iteratively set up each framebuffer and framebuffer-attached objects
usize buffer_offset = 0;
for (usize fb_idx = 0; fb_idx < num_fbuf; fb_idx++) {
// Count textures & renderbuffers
u32 num_textures = 0;
u32 num_renderbuffers = 0;
for (i32 i = 0; i < t->framebuffer_parameters[fb_idx].num_attached_buffers; i++) {
switch (BUFFERPARAMETER_GET_TYPE(t->buffer_parameters[buffer_offset + i])) {
case BufferType_frame:
UNIMPLEMENTED;
case BufferType_texture:
num_textures++;
break;
case BufferType_render:
num_renderbuffers++;
break;
case BufferType_buffer:
UNIMPLEMENTED;
default:
UNIMPLEMENTED;
}
}
// Create `num_attached_buffers` identical buffers
r_create_textures(w->context, &t->buffer[buffer_offset],
&t->buffer_parameters[buffer_offset],
&t->framebuffer_parameters[fb_idx].dimensions,
num_textures);
r_create_renderbuffers(w->context, &t->buffer[buffer_offset + num_textures],
&t->buffer_parameters[buffer_offset + num_textures],
&t->framebuffer_parameters[fb_idx].dimensions,
num_renderbuffers);
r_attach_buffers(w->context,
t->framebuffer[fb_idx],
&t->buffer[buffer_offset],
&t->buffer_parameters[buffer_offset],
t->framebuffer_parameters[fb_idx].num_attached_buffers);
//if (BUFFERPARAMETER_GET_TYPE(buffer_params[i]) != BufferType_texture) continue;
//u32 texture_type = BUFFERPARAMETER_GET_PARAMETER(buffer_params[i]);
//usize span = 0;
//while (
// (i + span < targets->buffer_len) &&
// (BUFFERPARAMETER_GET_TYPE(buffer_params[i + span]) == BufferType_texture) &&
// (buffer_params[i + span].buffer_param & 3) == textureType
//) {
// span++;
//}
//if (span == 0) continue;
//r_create_textures(w->context, &targets->buffer[i], texture_type, texturesizes, span);
}
//r_create_renderbuffers(c, targets->renderbuffer, renderbuffertypes, renderbuffersizes, targets->renderbuffer_len);
// Skip `texture` (??)
w->render_targets = t;
}
void window_free_renderstack(RenderTargets *restrict t) {
// Everything is in the same buffer anyways
free(t->framebuffer);
}
void draw_model(Window *restrict w, u32 framebuffer_idx, RenderObject* o, vec4 pos) {
r_draw_model(w->context, w->render_targets, framebuffer_idx, o, pos);
}
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