2D rendering (kinda, hud brokey)

Signed-off-by: Slendi <slendi@socopon.com>

src/LunarWM_core.c

@@ -417,10 +417,7 @@ void LunarWM_run(LunarWM *wm)
 
 			EndDrawing();
 		} else {
-
+			wm->renderer.camera.fovy = 90;
-			ClearBackground(RED);
-
-			EndDrawing();
 		}
 	}
 }

src/LunarWM_render.c

@@ -349,7 +349,7 @@ void LunarWM_render_windows(LunarWM *this, bool alpha_check)
 	}
 }
 
-static void render_3d(LunarWM *this, float /*dt*/)
+void LunarWM_render_3d(LunarWM *this, float /*dt*/)
 {
 	LunarWM_render_windows(this, true);
 
@@ -432,7 +432,8 @@ static void render_3d(LunarWM *this, float /*dt*/)
 	}
 }
 
-bool LunarWM_render_layer(LunarWM *this, LunarWM_RenderLayerInfo *info, float dt)
+bool LunarWM_render_layer(
+    LunarWM *this, LunarWM_RenderLayerInfo *info, float dt)
 {
 	auto const view_count = (uint32_t)this->xr.view_configuration_views_count;
 	assert(view_count == 2);
@@ -592,7 +593,7 @@ bool LunarWM_render_layer(LunarWM *this, LunarWM_RenderLayerInfo *info, float dt
 	BeginMode3D(this->renderer.camera);
 	{
 		ClearBackground(RED);
-		render_3d(this, dt);
+		LunarWM_render_3d(this, dt);
 	}
 	EndMode3D();
 

src/LunarWM_render.h

@@ -5,7 +5,7 @@
 
 void LunarWM_render_hud(LunarWM *wm, float dt, int hud_size);
 void LunarWM_render_windows(LunarWM *wm, bool alpha_check);
-bool LunarWM_render_layer(
+bool LunarWM_render_layer(LunarWM *wm, LunarWM_RenderLayerInfo *info, float dt);
-    LunarWM *wm, LunarWM_RenderLayerInfo *info, float dt);
+void LunarWM_render_3d(LunarWM *this, float dt);
 
 #endif

src/LunarWM_wayland.c

@@ -1,10 +1,12 @@
 #include "LunarWM_wayland.h"
 
+#include "LunarWM_render.h"
 #include "common.h"
+#include "raylib.h"
 #include "vec.h"
 
-#include <wlr/render/pass.h>
 #include <wlr/render/color.h>
+#include <wlr/render/pass.h>
 
 #include <assert.h>
 #include <math.h>
@@ -18,6 +20,8 @@
 #include <xkbcommon/xkbcommon-keysyms.h>
 #include <xkbcommon/xkbcommon.h>
 
+#include <rlgl.h>
+
 static void handle_new_output(struct wl_listener *listener, void *data);
 static void handle_output_frame(struct wl_listener *listener, void *data);
 static void handle_output_destroy(struct wl_listener *listener, void *data);
@@ -1488,7 +1492,8 @@ static void setup_xwayland(LunarWM *this)
 	wl_signal_add(&this->wayland.xwayland->events.new_surface,
 	    &this->wayland.xwayland_new_surface);
 }
-static void destroy_output(LunarWM_Output *output) {
+static void destroy_output(LunarWM_Output *output)
+{
 	if (!output) {
 		return;
 	}
@@ -1503,7 +1508,8 @@ static void destroy_output(LunarWM_Output *output) {
 	free(output);
 }
 
-static void handle_output_destroy(struct wl_listener *listener, void *data) {
+static void handle_output_destroy(struct wl_listener *listener, void *data)
+{
 	(void)data;
 	LunarWM_Output *output = wl_container_of(listener, output, destroy);
 	LunarWM *wm = output->wm;
@@ -1520,7 +1526,8 @@ static void handle_output_destroy(struct wl_listener *listener, void *data) {
 	destroy_output(output);
 }
 
-static void handle_output_frame(struct wl_listener *listener, void *data) {
+static void handle_output_frame(struct wl_listener *listener, void *data)
+{
 	(void)data;
 	LunarWM_Output *output = wl_container_of(listener, output, frame);
 	LunarWM *wm = output->wm;
@@ -1534,6 +1541,9 @@ static void handle_output_frame(struct wl_listener *listener, void *data) {
 	struct wlr_output_state state;
 	wlr_output_state_init(&state);
 
+	int width, height;
+	wlr_output_effective_resolution(wlr_output, &width, &height);
+
 	struct wlr_render_pass *pass
 	    = wlr_output_begin_render_pass(wlr_output, &state, NULL);
 	if (pass == NULL) {
@@ -1544,21 +1554,16 @@ static void handle_output_frame(struct wl_listener *listener, void *data) {
 		return;
 	}
 
-	struct wlr_box box = {
+	GLint drawFboId = 0, readFboId = 0;
-		.x = 0,
+	glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &drawFboId);
-		.y = 0,
+	glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &readFboId);
-		.width = wlr_output->width,
+
-		.height = wlr_output->height,
+	rlMatrixMode(RL_MODELVIEW);
-	};
+	rlLoadIdentity();
-	wlr_render_pass_add_rect(pass, &(struct wlr_render_rect_options){
+
-		.box = box,
+	// if (!IsTextureValid(wm->renderer.main_rt.texture)) {
-		.color = {
+	//	wm->renderer.main_rt = LoadRenderTexture(width, height);
-			.r = 1.0f,
+	// }
-			.g = 0.0f,
-			.b = 0.0f,
-			.a = 1.0f,
-		},
-	});
 
 	if (!wlr_render_pass_submit(pass)) {
 		wlr_output_state_finish(&state);
@@ -1576,17 +1581,82 @@ static void handle_output_frame(struct wl_listener *listener, void *data) {
 		return;
 	}
 
+	wm->renderer.tmp_rt.id = drawFboId;
+	wm->renderer.tmp_rt.texture = (Texture) {
+		.id = drawFboId,
+		.width = width,
+		.height = height,
+		.mipmaps = 1,
+		.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
+	};
+	if (!IsRenderTextureValid(wm->renderer.tmp_rt)) {
+		wm->renderer.tmp_rt.depth.id = rlLoadTextureDepth(width, height, true);
+		wm->renderer.tmp_rt.depth.width = width;
+		wm->renderer.tmp_rt.depth.height = height;
+		wm->renderer.tmp_rt.depth.format = 19; // DEPTH_COMPONENT_24BIT?
+		wm->renderer.tmp_rt.depth.mipmaps = 1;
+	}
+	rlFramebufferAttach(wm->renderer.tmp_rt.id, wm->renderer.tmp_rt.depth.id,
+	    RL_ATTACHMENT_DEPTH, RL_ATTACHMENT_RENDERBUFFER, 0);
+
+	if (!IsTextureValid(wm->renderer.main_rt.texture)) {
+		wm->renderer.main_rt = LoadRenderTexture(width, height);
+	}
+	int const hud_size = wm->cman->cfg.displays.hud.size;
+	if (!IsTextureValid(wm->renderer.hud_rt.texture)) {
+		wm->renderer.hud_rt = LoadRenderTexture(hud_size, hud_size);
+	}
+	BeginTextureMode(wm->renderer.hud_rt);
+	{
+		LunarWM_render_hud(wm, GetFrameTime(), 1);
+	}
+	EndTextureMode();
+	BeginTextureMode(wm->renderer.main_rt);
+	{
+		BeginMode3D(wm->renderer.camera);
+		{
+			ClearBackground(BLACK);
+			LunarWM_render_3d(wm, GetFrameTime());
+		}
+		EndMode3D();
+
+		rlDrawRenderBatchActive();
+	}
+	EndTextureMode();
+
+	BeginTextureMode(wm->renderer.tmp_rt);
+	{
+		DrawTexturePro(wm->renderer.main_rt.texture,
+		    (Rectangle) {
+		        0,
+		        0,
+		        wm->renderer.main_rt.texture.width,
+		        wm->renderer.main_rt.texture.height,
+		    },
+		    (Rectangle) {
+		        0,
+		        0,
+		        wm->renderer.main_rt.texture.width,
+		        -wm->renderer.main_rt.texture.height,
+		    },
+		    (Vector2) { 0, 0 }, 0, WHITE);
+	}
+	EndTextureMode();
+
 	wlr_output_state_finish(&state);
 }
 
-static void handle_new_output(struct wl_listener *listener, void *data) {
+static void handle_new_output(struct wl_listener *listener, void *data)
+{
 	struct wlr_output *wlr_output = data;
 	LunarWM *wm = wl_container_of(listener, wm, wayland.new_output_listener);
 
+	wlr_log(WLR_INFO, "Got new output.");
+
 	if (!wlr_output_init_render(
 	        wlr_output, wm->wayland.allocator, wm->wayland.renderer)) {
-		wlr_log(WLR_ERROR, "Failed to init render for output %s",
+		wlr_log(
-		    wlr_output->name);
+		    WLR_ERROR, "Failed to init render for output %s", wlr_output->name);
 		return;
 	}
 
@@ -1626,7 +1696,6 @@ static void handle_new_output(struct wl_listener *listener, void *data) {
 	wlr_output_schedule_frame(wlr_output);
 }
 
-
 bool LunarWM_wayland_init(LunarWM *this)
 {
 	wlr_log_init(WLR_DEBUG, nullptr);