render texture testing

res/sh/shade.hlsl

@@ -25,7 +25,7 @@ struct cs_input {
  * Lighting
  * ========================== */
 
-#define SAMPLES 64
+#define SAMPLES 16
 #define MARCHES 16
 #define AMBIENT float3(0, 0, 0)
 
@@ -100,11 +100,12 @@ SH_ENTRY(ROOTSIG) void cs(struct cs_input input)
         color *= albedo_tex[id];
 
         /* Apply lighting */
-        color.rgb *= get_light_at_pos(id);
+        // color.rgb *= get_light_at_pos(id);
 
         /* Apply temporal accumulation */
         float hysterisis = 0;
         // hysterisis = 0.2;
+        // hysterisis = 0.5;
         // hysterisis = 0.9;
         color.rgb = lerp(color.rgb, read_tex[id].rgb, hysterisis);
 

src/config.h

@@ -28,6 +28,8 @@
 
 #define IMAGE_PIXELS_PER_UNIT 128.0
 
+#define RENDER_MARGIN (1000)
+
 /* How many ticks back in time should the user thread blend between?
  * <Delay> = <USER_INTERP_RATIO> * <Tick interval>
  * E.g: At 1.5, the user thread will render 75ms back in time if the sim runs at 50tps

src/gp.h

@@ -107,6 +107,7 @@ struct gp_render_params {
     struct v2i32 ui_size;
     struct v2i32 render_size;
     struct xform world_to_render_xf;
+    struct xform render_to_ui_xf;
 };
 
 struct gp_render_sig *gp_render_sig_alloc(void);

src/gp_dx12.c

@@ -2954,6 +2954,7 @@ struct gp_resource *gp_run_render(struct gp_render_sig *render_sig, struct gp_re
     struct v2i32 ui_size = V2I32(max_i32(params.ui_size.x, 1), max_i32(params.ui_size.y, 1));
     struct v2i32 render_size = V2I32(max_i32(params.render_size.x, 1), max_i32(params.render_size.y, 1));
     struct xform world_to_render_xf = params.world_to_render_xf;
+    struct xform render_to_ui_xf = params.render_to_ui_xf;
 
     struct rect ui_viewport = RECT_FROM_V2(V2(0, 0), V2(ui_size.x, ui_size.y));
     struct rect render_viewport = RECT_FROM_V2(V2(0, 0), V2(render_size.x, render_size.y));
@@ -2997,7 +2998,22 @@ struct gp_resource *gp_run_render(struct gp_render_sig *render_sig, struct gp_re
         __profn("Run render");
         __profnc_dx12(cl->cq->prof, cl->cl, "Run render", RGB32_F(0.5, 0.2, 0.2));
         struct mat4x4 world_to_render_vp_matrix = calculate_vp(world_to_render_xf, render_viewport.width, render_viewport.height);
+
+        struct mat4x4 blit_vp_matrix = ZI;
+        {
+#if 1
+            struct xform xf = render_to_ui_xf;
+            //xf = xform_scaled(xf, V2(ui_size.x, ui_size.y));
+            xf = xform_scaled(xf, V2(render_size.x, render_size.y));
+            xf = xform_translated(xf, V2(0.5, 0.5));
+
+
+            blit_vp_matrix = calculate_vp(xf, ui_viewport.width, ui_viewport.height);
+#else
             struct mat4x4 blit_vp_matrix = calculate_vp(XFORM_TRS(.t = v2_mul(V2(ui_size.x, ui_size.y), 0.5), .s = V2(ui_size.x, ui_size.y)), ui_viewport.width, ui_viewport.height);
+#endif
+        }
+
         struct mat4x4 ui_vp_matrix = calculate_vp(XFORM_IDENT, ui_viewport.width, ui_viewport.height);
 
         /* Upload dummmy vert & index buffer */

src/user.c

@@ -128,16 +128,18 @@ GLOBAL struct {
     struct v2 screen_size;
     struct v2 screen_cursor;
 
-    struct xform world_to_ui_xf;
+    struct xform ui_to_screen_xf;
-    struct xform world_to_render_xf;
-
-    struct v2 ui_screen_offset;
     struct v2 ui_size;
     struct v2 ui_cursor;
 
+    struct xform render_to_ui_xf;
     struct v2 render_size;
+    struct v2 render_vis_size;
 
+    struct xform world_to_render_xf;
+    struct xform world_to_ui_xf;
     struct v2 world_cursor;
+
     struct v2 focus_send;
 } G = ZI, DEBUG_ALIAS(G, G_user);
 
@@ -880,22 +882,12 @@ INTERNAL void user_update(struct sys_window *window)
     }
 
     /* ========================== *
-     * Update ui from camera
+     * Update ui to screen xform from screen size
      * ========================== */
 
-    /* Calculate ui dimensions */
-    DEBUGBREAKABLE;
-    /* FIXME:
-     * At 180p & 360p, objects increment in uniform but grid does not.
-     * At 270p, grid increments in uniform but objects do not */
-
-    //G.render_size = V2(320, 180);
-    //G.render_size = V2(480, 270);
-    G.render_size = V2(640, 360);
-    //G.render_size = V2(2560, 1440);
     if (G.debug_camera) {
         G.ui_size = G.screen_size;
-        G.ui_screen_offset = V2(0, 0);
+        G.ui_to_screen_xf = XFORM_IDENT;
     } else {
         /* Determine ui size by camera & window dimensions */
         f32 aspect_ratio = (f32)(DEFAULT_CAMERA_WIDTH / DEFAULT_CAMERA_HEIGHT);
@@ -916,17 +908,109 @@ INTERNAL void user_update(struct sys_window *window)
         G.ui_size = V2(width, height);
 
         /* Center ui in window */
-        f32 x = 0;
+        f32 x = math_round(G.screen_size.x / 2 - width / 2);
-        f32 y = 0;
+        f32 y = math_round(G.screen_size.y / 2 - height / 2);
-        x = math_round(G.screen_size.x / 2 - width / 2);
+        G.ui_to_screen_xf = XFORM_TRS(.t = V2(x, y));
-        y = math_round(G.screen_size.y / 2 - height / 2);
-        G.ui_screen_offset = V2(x, y);
     }
 
-    G.ui_cursor = v2_sub(G.screen_cursor, G.ui_screen_offset);
+    G.ui_cursor = xform_mul_v2(xform_invert(G.ui_to_screen_xf), G.screen_cursor);
 
     /* ========================== *
-     * Update view from camera
+     * Update render to ui xform
+     * ========================== */
+
+    //DEBUGBREAKABLE;
+    /* FIXME:
+     * At 180p & 360p, objects increment in uniform but grid does not.
+     * At 270p, grid increments in uniform but objects do not */
+
+    //G.render_vis_size = V2(20, 20);
+    //G.render_vis_size = V2(320, 180);
+    //G.render_vis_size = V2(480, 270);
+    G.render_vis_size = V2(640, 360);
+
+    G.render_size = G.render_vis_size;
+    G.render_size.x += RENDER_MARGIN;
+    G.render_size.y += RENDER_MARGIN;
+
+
+#if 0
+    {
+        struct v2 scale = v2_div_v2(G.ui_size, G.render_vis_size);
+        scale.x = max_f32(scale.x, scale.y);
+        scale.y = scale.x;
+        struct xform xf = XFORM_IDENT;
+        xf = xform_scaled(xf, scale);
+        xf = xform_translated(xf, v2_mul(V2(RENDER_MARGIN, RENDER_MARGIN), -0.5));
+        G.render_to_ui_xf = xf;
+    }
+#elif 0
+    {
+        struct v2 pos = v2_mul(G.ui_size, 0.5);
+        pos = v2_sub(pos, v2_mul(G.render_size, 0.5));
+        G.render_to_ui_xf = XFORM_TRS(.t = pos);
+    }
+#elif 0
+    {
+        struct v2 scale = v2_div_v2(G.render_size, G.render_vis_size);
+        scale.x = min_f32(scale.x, scale.y);
+        scale.y = scale.x;
+
+        struct xform xf = XFORM_IDENT;
+        //xf = xform_translated(xf, v2_mul(V2(RENDER_MARGIN, RENDER_MARGIN), -0.5));
+        xf = xform_scaled(xf, scale);
+        G.render_to_ui_xf = xf;
+    }
+#else
+    {
+        struct v2 margin = V2(RENDER_MARGIN, RENDER_MARGIN);
+        (UNUSED)margin;
+
+        struct v2 scale = v2_div_v2(G.render_size, G.render_vis_size);
+        scale.x = max_f32(scale.x, scale.y);
+        scale.y = scale.x;
+        (UNUSED)scale;
+
+        struct xform xf = XFORM_IDENT;
+
+
+#if 0
+        xf = xform_translated(xf, v2_mul(v2_sub(G.ui_size, G.render_size), 0.5));
+        xf = xform_scaled(xf, scale);
+#else
+        struct v2 ui_center = v2_mul(G.ui_size, 0.5);
+        struct v2 render_center = v2_mul(G.render_size, 0.5);
+
+        xf = xform_translated(xf, ui_center);
+        xf = xform_scaled(xf, scale);
+        xf = xform_translated(xf, v2_neg(render_center));
+#endif
+
+        //xf = xform_translated(xf, v2_mul(V2(RENDER_MARGIN, RENDER_MARGIN), -0.5));
+
+
+        //xf = xform_translated(xf, v2_mul(v2_sub(G.ui_size, G.render_size), -0.5));
+
+
+
+        //xf = xform_translated(xf, margin);
+
+        //xf = xform_translated(xf, V2(100, 100));
+
+        //xf.og = v2_sub(G.ui_size, G.render_size);
+
+        //xf = xform_translated(xf, v2_div_v2(v2_mul(v2_sub(G.ui_size, G.render_size), 0.5), scale));
+
+
+
+
+
+        G.render_to_ui_xf = xf;
+    }
+#endif
+
+    /* ========================== *
+     * Update world to ui xform from camera
      * ========================== */
 
     if (G.debug_camera) {
@@ -961,23 +1045,24 @@ INTERNAL void user_update(struct sys_window *window)
     } else {
         struct xform xf = sim_ent_get_xform(local_camera);
 
-        struct v2 center = xf.og;
+        struct v2 world_center = xf.og;
         f32 rot = xform_get_rotation(xf);
 
         /* Scale view into viewport based on camera size */
-        struct v2 size = G.ui_size;
+        struct v2 scale = G.ui_size;
         {
             struct xform quad_xf = xform_mul(xf, local_camera->camera_quad_xform);
             struct v2 camera_size = xform_get_scale(quad_xf);
             if (!v2_is_zero(camera_size)) {
-                size = v2_div_v2(size, camera_size);
+                scale = v2_div_v2(G.ui_size, camera_size);
             }
         }
-        f32 scale_ui = min_f32(size.x, size.y);
+        scale.x = min_f32(scale.x, scale.y);
+        scale.y = scale.x;
 
         struct v2 ui_center = v2_mul(G.ui_size, 0.5);
-        struct trs trs = TRS(.t = v2_sub(ui_center, center), .r = rot, .s = V2(scale_ui, scale_ui));
+        struct trs trs = TRS(.t = v2_sub(ui_center, world_center), .r = rot, .s = scale);
-        struct v2 pivot = center;
+        struct v2 pivot = world_center;
         G.world_to_ui_xf = XFORM_IDENT;
         G.world_to_ui_xf = xform_translated(G.world_to_ui_xf, pivot);
         G.world_to_ui_xf = xform_translated(G.world_to_ui_xf, trs.t);
@@ -986,6 +1071,47 @@ INTERNAL void user_update(struct sys_window *window)
         G.world_to_ui_xf = xform_translated(G.world_to_ui_xf, v2_neg(pivot));
     }
 
+    G.world_cursor = xform_invert_mul_v2(G.world_to_ui_xf, G.ui_cursor);
+
+    /* ========================== *
+     * Update world to render xform from camera
+     * ========================== */
+
+    {
+        struct xform ui_to_world_xf = xform_invert(G.world_to_ui_xf);
+        struct v2 world_center = xform_mul_v2(ui_to_world_xf, v2_mul(G.ui_size, 0.5));
+
+        //world_center = v2_sub(world_center, V2(1, 1));
+
+        /* Scale view into viewport based on camera size */
+        //struct v2 scale = v2_div_v2(G.render_size, G.ui_size);
+        struct v2 scale = ZI;
+        //scale = v2_mul(G.render_size, IMAGE_PIXELS_PER_UNIT);
+        //scale = V2(IMAGE_PIXELS_PER_UNIT, IMAGE_PIXELS_PER_UNIT);
+        //scale = v2_div_v2(V2(1, 1), scale);
+
+#if 0
+        scale = xform_get_scale(G.world_to_ui_xf);
+#elif 1
+        struct v2 vis_scale = v2_div_v2(G.render_vis_size, G.render_size);
+        vis_scale.x = min_f32(vis_scale.x, vis_scale.y);
+        vis_scale.y = vis_scale.x;
+
+        scale = xform_get_scale(G.world_to_ui_xf);
+        scale = v2_mul_v2(scale, vis_scale);
+#endif
+
+        struct xform xf = XFORM_IDENT;
+
+        /*xf = xform_translated(xf, v2_mul(world_center, -1));*/
+        xf = xform_translated(xf, v2_mul(G.render_size, 0.5));
+
+        xf = xform_scaled(xf, scale);
+        xf = xform_translated(xf, v2_mul(world_center, -1));
+
+
+        G.world_to_render_xf = xf;
+    }
 
 
 
@@ -993,11 +1119,13 @@ INTERNAL void user_update(struct sys_window *window)
 
 
 
-    DEBUGBREAKABLE;
+
+#if 0
     if (G.debug_camera) {
+#if 0
         G.world_to_render_xf = xform_basis_with_rotation_world(G.world_to_render_xf, 0);
 
-        struct v2 world_cursor = xform_invert_mul_v2(G.world_to_render_xf, G.ui_cursor);
+        struct v2 world_cursor = G.world_cursor;
 
         /* Pan view */
         if (G.bind_states[USER_BIND_KIND_PAN].is_held) {
@@ -1023,27 +1151,28 @@ INTERNAL void user_update(struct sys_window *window)
             G.world_to_render_xf = xform_scaled(G.world_to_render_xf, V2(zoom, zoom));
             G.world_to_render_xf = xform_translated(G.world_to_render_xf, v2_neg(world_cursor));
         }
+#endif
     } else {
         struct xform xf = sim_ent_get_xform(local_camera);
 
-        struct v2 center = xf.og;
+        struct v2 world_center = xf.og;
         f32 rot = xform_get_rotation(xf);
 
         /* Scale view into viewport based on camera size */
-        struct v2 size = G.render_size;
+        struct v2 scale = G.render_vis_size;
         {
             struct xform quad_xf = xform_mul(xf, local_camera->camera_quad_xform);
             struct v2 camera_size = xform_get_scale(quad_xf);
             if (!v2_is_zero(camera_size)) {
-                size = v2_div_v2(size, camera_size);
+                scale = v2_div_v2(G.render_vis_size, camera_size);
             }
         }
-        f32 scale_render = min_f32(size.x, size.y);
+        scale.x = min_f32(scale.x, scale.y);
+        scale.y = scale.x;
 
         struct v2 render_center = v2_mul(G.render_size, 0.5);
-
+        struct trs trs = TRS(.t = v2_sub(render_center, world_center), .r = rot, .s = scale);
-        struct trs trs = TRS(.t = v2_sub(render_center, center), .r = rot, .s = V2(scale_render, scale_render));
+        struct v2 pivot = world_center;
-        struct v2 pivot = center;
         G.world_to_render_xf = XFORM_IDENT;
         G.world_to_render_xf = xform_translated(G.world_to_render_xf, pivot);
         G.world_to_render_xf = xform_translated(G.world_to_render_xf, trs.t);
@@ -1051,6 +1180,7 @@ INTERNAL void user_update(struct sys_window *window)
         G.world_to_render_xf = xform_scaled(G.world_to_render_xf, trs.s);
         G.world_to_render_xf = xform_translated(G.world_to_render_xf, v2_neg(pivot));
     }
+#endif
 
 
 
@@ -1063,16 +1193,42 @@ INTERNAL void user_update(struct sys_window *window)
 
 
 
+#if 0
+    {
+#if 1
+        struct quad world_camera_quad = ZI;
+        world_camera_quad.p0 = V2(0, 0);
+        world_camera_quad.p1 = V2(0, G.ui_size.x);
+        world_camera_quad.p2 = V2(G.ui_size.x, G.ui_size.y);
+        world_camera_quad.p3 = V2(0, G.ui_size.y);
 
+        struct xform ui_to_world_xf = xform_invert(G.world_to_ui_xf);
+        world_camera_quad = xform_mul_quad(ui_to_world_xf, world_camera_quad);
 
+        struct v2 world_center = xform_mul_v2(ui_to_world_xf, v2_mul(G.ui_size, 0.5));
+#else
+        //struct xform xf = sim_ent_get_xform(local_camera);
+#endif
 
+        //struct v2 world_center = xf.og;
+        f32 rot = xform_get_rotation(G.world_to_ui_xf);
 
+        /* Scale view into viewport based on camera size */
+        //struct v2 scale = v2_div_v2(G.render_size, G.ui_size);
+        struct v2 scale = v2_sub(world_camera_quad.p2, world_camera_quad.p0);
+        scale = v2_div_v2(G.render_size, scale);
 
-    /* ========================== *
+        struct v2 render_center = v2_mul(G.render_size, 0.5);
-     * Update cursor
+        struct trs trs = TRS(.t = v2_sub(render_center, world_center), .r = rot, .s = scale);
-     * ========================== */
+        struct v2 pivot = world_center;
-
+        G.world_to_render_xf = XFORM_IDENT;
-    G.world_cursor = xform_invert_mul_v2(G.world_to_ui_xf, G.ui_cursor);
+        G.world_to_render_xf = xform_translated(G.world_to_render_xf, pivot);
+        G.world_to_render_xf = xform_translated(G.world_to_render_xf, trs.t);
+        G.world_to_render_xf = xform_rotated(G.world_to_render_xf, trs.r);
+        G.world_to_render_xf = xform_scaled(G.world_to_render_xf, trs.s);
+        G.world_to_render_xf = xform_translated(G.world_to_render_xf, v2_neg(pivot));
+    }
+#endif
 
     /* ========================== *
      * Update listener from view
@@ -2129,6 +2285,7 @@ INTERNAL void user_update(struct sys_window *window)
             params.ui_size = user_resolution;
             params.render_size = world_resolution;
             params.world_to_render_xf = G.world_to_render_xf;
+            params.render_to_ui_xf = G.render_to_ui_xf;
             render_texture = gp_run_render(G.render_sig, params);
         }