From 5a93fb6f6a8fb6f1dad821b407b4f4531bc23783 Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Wed, 29 Mar 2023 00:01:54 -0500
Subject: add image caching

---
 main.lua | 59 ++++++++++++++++++++++++++++++++++++-----------------------
 1 file changed, 36 insertions(+), 23 deletions(-)

(limited to 'main.lua')

diff --git a/main.lua b/main.lua
index 098a65b..f13a1a6 100644
--- a/main.lua
+++ b/main.lua
@@ -22,27 +22,12 @@ local vw, vh = 640, 480
 
 -- create camera matrices
 local camera = {
-	view=Mat4():identity():translate(Vec3{0, 0, -30}),
+	view=Mat4():identity():translate(Vec3{0, 0, -3}),
 	projection=Mat4():perspective(math.rad(45), 640/480, 0.1, 100),
 }
 
 
 
--- create shader
-local shader = honey.Shader{
-	vertexFile = "vertex.glsl",
-	fragmentFile = "fragment.glsl",
-}
-
--- load models
-local plane = honey.mesh.loadFile("assets/plane.obj")[1]
-local tetra = honey.mesh.loadFile("assets/tetrahedron.obj")[1]
-local cube = honey.mesh.loadFile("assets/cube.obj")[1]
-local octa = honey.mesh.loadFile("assets/octahedron.obj")[1]
-local dodeca = honey.mesh.loadFile("assets/dodecahedron.obj")[1]
-local icosa  = honey.mesh.loadFile("assets/icosahedron.obj")[1]
-
-
 -- close window on ESCAPE key
 window:setKeyCallback(function(_, key, scancode, action)
 	if action == glfw.PRESS then
@@ -82,14 +67,39 @@ sdb:addSystem{
 	update = function(self, dt)
 		local entities = self.db:queryComponent("renderMesh")
 		for entity, tbl in pairs(entities) do
-			tbl.shader:use()
-			tbl.shader:configure{matrix={
-				view=camera.view,
-				projection=camera.projection,
-				model=Mat4():identity(),
-			}}
+			-- get shader
+			local shader = honey.shader.loadShader(tbl.shader.vertex, tbl.shader.fragment)
+			shader:use()
+
+			-- bind textures
+			local texOffset = 0
+			for name, texTbl in pairs(tbl.textures) do
+				local texture = honey.image.loadImage(texTbl.filename, texTbl.params)
+				gl.BindTexture(gl.TEXTURE_2D + texOffset, texture.texture)
+				shader:setInt(name, texOffset)
+				texOffset = texOffset + 1
+			end
+
+			-- configure default uniforms
+			shader:configure{
+				float={
+					time=glfw.GetTime(),
+				},
+				matrix={
+					view=camera.view,
+					projection=camera.projection,
+					model=Mat4():identity(),
+				},
+			}
+
+			-- draw mesh
 			local mesh = honey.mesh.loadMesh(tbl.mesh.filename, tbl.mesh.index)
 			mesh:drawElements()
+
+			-- unbind textures
+			for i=0,texOffset-1 do
+				gl.BindTexture(gl.TEXTURE_2D + i, 0)
+			end
 		end
 	end,
 	db = edb,
@@ -99,7 +109,10 @@ sdb:addSystem{
 
 local id = edb:createEntity()
 edb:addComponent(id, "renderMesh", {
-	shader = shader,
+	textures = {
+		ourTexture={ filename="77155.png" },
+	},
+	shader = { vertex="vertex.glsl", fragment="fragment.glsl" },
 	mesh = { filename="assets/icosahedron.obj", index=1 },
 })
 
-- 
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