From d65ddd07a43d5ffdcf2ddf90d6f86626cf9b92d8 Mon Sep 17 00:00:00 2001
From: pryazha <pryadeiniv@mail.ru>
Date: Tue, 18 Mar 2025 11:31:31 +0500
Subject: hdr

---
 libs/common.h | 49 ++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 44 insertions(+), 5 deletions(-)

(limited to 'libs/common.h')

diff --git a/libs/common.h b/libs/common.h
index b12e4a1..b535c72 100644
--- a/libs/common.h
+++ b/libs/common.h
@@ -12,7 +12,7 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 
-U8 * read_entire_file(const char *filename)
+U8 *read_entire_file(const char *filename)
 {
 	U8 *result;
 	FILE *f;
@@ -40,7 +40,7 @@ U8 * read_entire_file(const char *filename)
 	return(result);
 }
 
-void * mmap_file(size_t *len, const char *filename)
+void *mmap_file(size_t *len, const char *filename)
 {
 	struct stat sb;
 	char* p;
@@ -95,7 +95,33 @@ void read_entire_file_mmap(void* ctx, const char* filename, const int is_mtl,
 	*len = data_len;
 }
 
-Mesh * mesh_load_obj(Arena *arena, const char *filename)
+Mesh *mesh_gen_quad(Arena *arena)
+{
+	Mesh	*m;
+	Vertex	verts[4];
+	U32	ids[6];
+
+	m = 0;
+
+	verts[0] = vertex(v3f( 1.0f,  1.0f,  0.0f), v3f_zero(), v2f(1.0f, 1.0f));
+	verts[1] = vertex(v3f(-1.0f,  1.0f,  0.0f), v3f_zero(), v2f(0.0f, 1.0f));
+	verts[2] = vertex(v3f(-1.0f, -1.0f,  0.0f), v3f_zero(), v2f(0.0f, 0.0f));
+	verts[3] = vertex(v3f( 1.0f, -1.0f,  0.0f), v3f_zero(), v2f(1.0f, 0.0f));
+
+	ids[0] = 0;
+	ids[1] = 1;
+	ids[2] = 2;
+
+	ids[3] = 0;
+	ids[4] = 2;
+	ids[5] = 3;
+
+	m = mesh_init(arena, verts, 4, ids, 6);
+
+	return m;
+}
+
+Mesh *mesh_load_obj(Arena *arena, const char *filename)
 {
 	tinyobj_attrib_t attrib;
 	tinyobj_shape_t *shapes = 0;
@@ -767,9 +793,22 @@ V3F get_dv_camera_first_person(Input *input, Camera *camera,
 	return(dv);
 }
 
+MAT4 camera_persp(Camera camera, F32 ar)
+{
+	MAT4	result;
+	result = perspective(camera.fovx, ar, camera.near, camera.far);
+	return result;
+}
+
 typedef struct {
-	Camera camera;
-	F32 dt;
+	Arena	*arena;
+
+	Input	input;
+
+	Camera	camera;
+	V3F	camera_dp;
+
+	F32	dt;
 } State;
 
 #endif /* COMMON_H */
-- 
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