From d8158c63c17c8f83d19f5b1f82744d426da8c0e8 Mon Sep 17 00:00:00 2001
From: Cameron Reikes <cameronreikes@gmail.com>
Date: Sun, 25 Jun 2023 15:50:44 -0700
Subject: [PATCH] Alpha clipping, grass, stubbed out dbg3dline, made camera
 mat4s global

---
 art/art.blend       |  4 ++--
 art/gigatexture.png |  4 ++--
 main.c              | 12 ++++++++++--
 threedee.glsl       | 10 +++++++++-
 4 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/art/art.blend b/art/art.blend
index 8d00a76..035b722 100644
--- a/art/art.blend
+++ b/art/art.blend
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:3a59e4241eaf2a973e026c2e271b9112d3ba7a50c191c26d540256e16754c995
-size 1069020
+oid sha256:4d49a8f5eaa0b3e55ac76e78f0005d8784285d72876c969f3d770d15beec33d0
+size 1105992
diff --git a/art/gigatexture.png b/art/gigatexture.png
index 56f700b..7a5f6b8 100644
--- a/art/gigatexture.png
+++ b/art/gigatexture.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:144900eab8da94f5a7b343d1a7ecfbcd3d5ba329da82c6f09f68250f6d129845
-size 1801687
+oid sha256:57b5443c0da618ff23428972546a61daf18af448dc2f189e7db445a573ee028f
+size 3373206
diff --git a/main.c b/main.c
index 4e0a5b1..359fd32 100644
--- a/main.c
+++ b/main.c
@@ -1055,6 +1055,8 @@ Vec3 flycam_pos = {0};
 float flycam_horizontal_rotation = 0.0;
 float flycam_vertical_rotation = 0.0;
 float flycam_speed = 1.0f;
+Mat4 view = {0}; 
+Mat4 projection = {0};
 
 Vec4 IsPoint(Vec3 point)
 {
@@ -3347,6 +3349,7 @@ void dbgbigsquare(Vec2 at)
 #endif
 }
 
+
 void dbgline(Vec2 from, Vec2 to)
 {
 #ifdef DEVTOOLS
@@ -3388,6 +3391,11 @@ void dbgrect(AABB rect)
 #endif
 }
 
+void dbg3dline(Vec3 from, Vec2 to)
+{
+	// need 2d poins for each of these.
+}
+
 typedef struct TextParams
 {
 	bool world_space;
@@ -4380,7 +4388,7 @@ void frame(void)
 		sg_apply_pipeline(state.threedee_pip);
 		state.threedee_bind.fs_images[SLOT_threedee_tex] = image_gigatexture;
 
-		Mat4 view = Translate(V3(0.0, 1.0, -5.0f));
+		view = Translate(V3(0.0, 1.0, -5.0f));
 		//view = LookAt_RH(V3(0,1,-5
 		if(flycam)
 		{
@@ -4392,7 +4400,7 @@ void frame(void)
 		{
 			view = LookAt_RH(cam_pos, player_pos, V3(0, 1, 0));
 		}
-		Mat4 projection = Perspective_RH_NO(PI32/4.0f, screen_size().x / screen_size().y, 0.01f, 1000.0f);
+		projection = Perspective_RH_NO(PI32/4.0f, screen_size().x / screen_size().y, 0.01f, 1000.0f);
 
 		for(PlacedMesh *cur = level_threedee.placed_mesh_list; cur; cur = cur->next)
 		{
diff --git a/threedee.glsl b/threedee.glsl
index d70c0f9..995888e 100644
--- a/threedee.glsl
+++ b/threedee.glsl
@@ -26,7 +26,15 @@ in vec2 uv;
 out vec4 frag_color;
 
 void main() {
-	frag_color = texture(tex, uv);
+	vec4 col = texture(tex, uv);
+	if(col.a < 0.5)
+	{
+		discard;
+	}
+	else
+	{
+		frag_color = vec4(col.rgb, 1.0);
+	}
 }
 @end