From 4d57ba62bf4e499ecadfbd50916e16484a26f86d Mon Sep 17 00:00:00 2001
From: Nils Dagsson Moskopp <nils@dieweltistgarnichtso.net>
Date: Sun, 15 Oct 2023 20:49:11 +0200
Subject: [PATCH] Add code to generate TGA type 1 test textures

---
 tools/generate_test_textures.lua | 44 ++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/tools/generate_test_textures.lua b/tools/generate_test_textures.lua
index aace83e..2478aac 100755
--- a/tools/generate_test_textures.lua
+++ b/tools/generate_test_textures.lua
@@ -1,5 +1,49 @@
 dofile("../init.lua")
 
+local _ = { 0 }
+local R = { 1 }
+local G = { 2 }
+local B = { 3 }
+
+local pixels_colormapped = {
+	{ _, _, _, _, _, B, _, B, },
+	{ _, _, _, _, _, B, B, B, },
+	{ _, _, G, G, G, B, _, B, },
+	{ _, _, G, _, G, B, B, B, },
+	{ _, R, G, _, _, _, _, _, },
+	{ _, R, G, G, G, _, _, _, },
+	{ _, R, _, _, _, _, _, _, },
+	{ R, R, R, _, _, _, _, _, },
+}
+
+image_colormapped = tga_encoder.image(pixels_colormapped)
+
+colormap_32bpp = {
+	{    0,   0,   0, 128 },
+	{ 255,    0,   0, 255 },
+	{    0, 255,   0, 255 },
+	{    0,   0, 255, 255 },
+}
+image_colormapped:save(
+	"type1_32bpp_bt.tga",
+	{ colormap = colormap_32bpp, color_format = "B8G8R8A8" }
+)
+image_colormapped:save(
+	"type1_16bpp_bt.tga",
+	{ colormap = colormap_32bpp, color_format = "A1R5G5B5" }
+)
+
+colormap_24bpp = {
+	{    0,   0,   0 },
+	{ 255,    0,   0 },
+	{    0, 255,   0 },
+	{    0,   0, 255 },
+}
+image_colormapped:save(
+	"type1_24bpp_bt.tga",
+	{ colormap = colormap_32bpp, color_format = "B8G8R8" }
+)
+
 local _ = {    0,   0,   0, 128 }
 local R = { 255,    0,   0, 255 }
 local G = {    0, 255,   0, 255 }