polyadvent

commit 5d8a70c618224e7a09869bcfff3da465e791987b
parent 35865d59734ee3d1d36b12d20aef92da41497319
Author: William Casarin <jb55@jb55.com>
Date:   Sat,  3 Nov 2018 23:04:54 -0700

calculate shadowmap ortho camera from bounding boxes

Diffstat:
M
Makefile
 | 
2
+-
M
src/game.c
 | 
16
++--------------
M
src/update.c
 | 
11
+++++++++++

3 files changed, 14 insertions(+), 15 deletions(-)
diff --git a/Makefile b/Makefile
@@ -2,7 +2,7 @@ NAME ?= polyadvent
 BIN ?= $(NAME)
 PREFIX ?= /usr/local
 DEFS= -DGLFW_INCLUDE_NONE -DDEBUG
-CFLAGS = $(DEFS) -ggdb -O -I src -Wall -Werror -Wextra -std=c99 \
+CFLAGS = $(DEFS) -ggdb -Ofast -I src -Wall -Werror -Wextra -std=c99 \
 						-Wno-unused-function \
 						-Wno-unused-parameter \
 						-Wno-unused-variable \
diff --git a/src/game.c b/src/game.c
@@ -40,7 +40,7 @@ void game_init(struct game *game, int width, int height) {
     mat4 *light_dir = res->light_dir;
     int ok = 0;
 
-    const double size = 1000;
+    const double size = 10000;
 
     terrain->settings = (struct perlin_settings){
         .depth = 1,
@@ -54,18 +54,6 @@ void game_init(struct game *game, int width, int height) {
         .scale = 1.0
     };
 
-    static const int shadowmap_scale = 10.0;
-
-    // default ortho screenspace projection
-    mat4_ortho(-shadowmap_scale, // left
-               shadowmap_scale, // right
-               -shadowmap_scale, // bottom
-               shadowmap_scale, // top
-               -10000.0, // near
-               10000.0,  // far
-               res->proj_ortho
-               );
-
     create_ui(&game->ui, width, height, &res->programs[UI_PROGRAM]);
 
     check_gl();
@@ -118,7 +106,7 @@ void game_init(struct game *game, int width, int height) {
     terrain->entity.casts_shadows = 0;
 
     // player init
-    ok = load_model(&player->model, "ico-sphere");
+    ok = load_model(&player->model, "tower");
     assert(ok);
     player->model.shading = SHADING_VERT_COLOR;
     player->node.label = "player";
diff --git a/src/update.c b/src/update.c
@@ -220,6 +220,17 @@ void resize_fbos(struct game *game, int width, int height) {
         delete_fbo(&res->shadow_buffer);
     }
 
+    const float factor = 8.0;
+    float left = res->player.model.geom.min[0] * factor;
+    float right = res->player.model.geom.max[0] * factor;
+    float bottom = res->player.model.geom.min[1] * factor;
+    float top = res->player.model.geom.max[1] * factor;
+    const float near = -10000.0;
+    const float far = 10000.0;
+
+    // default ortho screenspace projection
+    mat4_ortho(left, right, bottom, top, near, far, res->proj_ortho);
+
     create_fbo(&res->shadow_buffer, width, height);
     /* fbo_attach_renderbuffer(&res->shadow_buffer, GL_DEPTH24_STENCIL8, */
     /*                         GL_DEPTH_STENCIL_ATTACHMENT); */