From 1e117abd68cbd0a0cfcb4b3c0dfe8e8532c6729f Mon Sep 17 00:00:00 2001
From: Anders Jenbo <anders@jenbo.dk>
Date: Wed, 23 Jul 2025 19:40:54 +0200
Subject: [PATCH] Add extra logging for shader compilation errors

---
 miniwin/src/d3drm/backends/opengles3/renderer.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/miniwin/src/d3drm/backends/opengles3/renderer.cpp b/miniwin/src/d3drm/backends/opengles3/renderer.cpp
index 95daacff..b49c5674 100644
--- a/miniwin/src/d3drm/backends/opengles3/renderer.cpp
+++ b/miniwin/src/d3drm/backends/opengles3/renderer.cpp
@@ -15,8 +15,17 @@ static GLuint CompileShader(GLenum type, const char* source)
 	GLint success;
 	glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
 	if (!success) {
+		GLint logLength = 0;
+		glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &logLength);
+		if (logLength > 0) {
+			std::vector<char> log(logLength);
+			glGetShaderInfoLog(shader, logLength, nullptr, log.data());
+			SDL_Log("Shader compile error: %s", log.data());
+		}
+		else {
+			SDL_Log("CompileShader (%s)", SDL_GetError());
+		}
 		glDeleteShader(shader);
-		SDL_Log("CompileShader (%s)", SDL_GetError());
 		return 0;
 	}
 	return shader;