From b2c0dd12d2a39e74f8e6d63bffec073ef0871ea7 Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Mon, 22 Aug 2022 12:39:51 -0500
Subject: add uniforms

---
 src/gl/CMakeLists.txt | 12 ++++++++++++
 src/gl/shader.c       | 27 +++++++++++++++++++++++++++
 src/gl/window.c       | 10 ++++++++++
 3 files changed, 49 insertions(+)
 create mode 100644 src/gl/CMakeLists.txt

(limited to 'src/gl')

diff --git a/src/gl/CMakeLists.txt b/src/gl/CMakeLists.txt
new file mode 100644
index 0000000..f995ef5
--- /dev/null
+++ b/src/gl/CMakeLists.txt
@@ -0,0 +1,12 @@
+project(honey_engine)
+
+set (GL ${CMAKE_CURRENT_LIST_DIR})
+
+target_sources(honey PUBLIC
+	${GL}/data.c
+	${GL}/drawing.c
+	${GL}/shader.c
+	${GL}/window.c
+	${GL}/gl.c
+	${GL}/glad/glad.c
+)
diff --git a/src/gl/shader.c b/src/gl/shader.c
index 96946fe..fb64bc0 100644
--- a/src/gl/shader.c
+++ b/src/gl/shader.c
@@ -13,6 +13,9 @@ int gl_program_attach_shader(lua_State *L);
 int gl_program_link(lua_State *L);
 int gl_program_use(lua_State *L);
 
+int gl_uniform_get_location(lua_State *L);
+int gl_uniform_4f(lua_State *L);
+
 
 void setup_shader(lua_State *L, int gl_index)
 {
@@ -32,6 +35,9 @@ void setup_shader(lua_State *L, int gl_index)
 		hs_str_cfunc("link", gl_program_link),
 		hs_str_cfunc("use", gl_program_use),
 
+		hs_str_cfunc("getUniformLocation", gl_uniform_get_location),
+		hs_str_cfunc("uniform4f", gl_uniform_4f),
+
 		hs_str_tbl("type", shader_types),
 	);
 
@@ -122,3 +128,24 @@ int gl_program_use(lua_State *L)
 	glUseProgram(program);
 	return 0;
 }
+
+
+int gl_uniform_get_location(lua_State *L)
+{
+	lua_Integer program;
+	char *name;
+	hs_parse_args(L, hs_int(program), hs_str(name));
+	int location = glGetUniformLocation(program, (const GLchar*)name);
+	lua_pushinteger(L, location);
+	return 1;
+}
+
+
+int gl_uniform_4f(lua_State *L)
+{
+	lua_Integer location;
+	lua_Number v0, v1, v2, v3;
+	hs_parse_args(L, hs_int(location), hs_num(v0), hs_num(v1), hs_num(v2), hs_num(v3));
+	glUniform4f(location, v0, v1, v2, v3);
+	return 0;
+}
diff --git a/src/gl/window.c b/src/gl/window.c
index 075bd6c..1b8c4bb 100644
--- a/src/gl/window.c
+++ b/src/gl/window.c
@@ -27,6 +27,8 @@ int window_should_close(lua_State *L);
 int window_poll_events(lua_State *L);
 int window_swap_buffers(lua_State *L);
 int window_set_framebuffer_size_callback(lua_State *L);
+int window_get_time(lua_State *L);
+
 
 
 void setup_window(lua_State *L, int honey_index)
@@ -50,6 +52,7 @@ void setup_window(lua_State *L, int honey_index)
 		hs_str_cfunc("pollEvents", window_poll_events),
 		hs_str_cfunc("swapBuffers", window_swap_buffers),
 		hs_str_cfunc("setFramebufferSizeCallback", window_set_framebuffer_size_callback),
+		hs_str_cfunc("getTime", window_get_time),
 
 		hs_str_tbl("hintType", hint_types),
 		hs_str_tbl("profileType", profile_types),
@@ -158,3 +161,10 @@ int window_set_framebuffer_size_callback(lua_State *L)
 	wdata->framebuffer_size_callback = hs_rstore(L);
 	return 0;
 }
+
+
+int window_get_time(lua_State *L)
+{
+	lua_pushnumber(L, glfwGetTime());
+	return 1;
+}
-- 
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