From 1bfc015ff0d9bbaaec065600dfc49ed1f13a75c3 Mon Sep 17 00:00:00 2001
From: Ethan <codedcells@gmail.com>
Date: Sat, 19 Oct 2024 04:27:55 +0100
Subject: [PATCH] added missing texture fallback
kinda useless since if there's no textures, likely no shaders either, but may be useful, 3 modes, 0 = white, 1 = checkerboard, 2 = colourful
---
ScuffedMinecraft/src/Application.cpp | 51 ++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/ScuffedMinecraft/src/Application.cpp b/ScuffedMinecraft/src/Application.cpp
index 953a117..7906b5d 100644
--- a/ScuffedMinecraft/src/Application.cpp
+++ b/ScuffedMinecraft/src/Application.cpp
@@ -184,6 +184,57 @@ int main()
else
{
std::cout << "Failed to load texture\n";
+ // Use fallbacks
+ width = 256;
+ height = 256;
+ unsigned char* whiteTexture = new unsigned char[width * height * 4]; // RGBA
+
+ int errorTexture = 1; // 0 = white, 1 = checkerboard, 2 = colourful
+
+ // Helper function to set RGBA values
+ auto setPixel = [](unsigned char* texture, int index, int r, int g, int b, int alpha) {
+ texture[index] = r;
+ texture[index + 1] = g;
+ texture[index + 2] = b;
+ texture[index + 3] = alpha;
+ };
+
+ // Default to white
+ int r = 255, g = 255, b = 255;
+
+ for (int y = 0; y < height; ++y)
+ {
+ int alpha = (y >= 64 && y < 96) ? 218 : 255; // Water transparency
+
+ for (int x = 0; x < width; ++x)
+ {
+ if (errorTexture == 1)
+ {
+ // Checkerboard pattern
+ r = g = b = 0;
+ if ((x % 16 < 8) ^ (y % 16 < 8))
+ r = b = 255;
+ }
+ else if (errorTexture == 2)
+ {
+ // Colorful pattern, distinct color for each block
+ int spriteX = x / 16, spriteY = y / 16;
+ r = spriteX * 16;
+ g = spriteY * 16;
+ b = (spriteX + spriteY) * 8;
+ }
+
+ int i = (y * width + x) * 4;
+ setPixel(whiteTexture, i, r, g, b, alpha);
+ }
+ }
+
+ // Upload the white texture
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, whiteTexture);
+ glGenerateMipmap(GL_TEXTURE_2D);
+
+ // Clean up
+ delete[] whiteTexture;
}
stbi_image_free(data);