From ceccd0a2ff94c91955e7e10291a7dbead38b3b49 Mon Sep 17 00:00:00 2001
From: hanfling <13674464+hanfling@users.noreply.github.com>
Date: Tue, 8 Nov 2022 04:19:38 +0100
Subject: [PATCH] Two fixes for the SPIRVShader example

1) glm::mat4 default constructor behaviour was changed from identity matrix to undefined data. I updated the code to now use mat(float) ctor to create the identity matrices.
3) Well... a triangle typically consists of 3 vertices, not 9...
---
 SPIRVShader/main.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/SPIRVShader/main.cpp b/SPIRVShader/main.cpp
index f99bd5b..c0f8d09 100644
--- a/SPIRVShader/main.cpp
+++ b/SPIRVShader/main.cpp
@@ -156,9 +156,9 @@ class OpenGLExample
 		// Update matrices
 		uboVS.projection = glm::perspective(glm::radians(60.0f), (float)1280 / (float)720, 0.1f, 256.0f);
 
-		uboVS.view = glm::translate(glm::mat4(), glm::vec3(0.0f, 0.0f, zoom));
+		uboVS.view = glm::translate(glm::mat4(1.0), glm::vec3(0.0f, 0.0f, zoom));
 
-		uboVS.model = glm::mat4();
+		uboVS.model = glm::mat4(1.0);
 		uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
 		uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.y), glm::vec3(0.0f, 1.0f, 0.0f));
 		uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
@@ -232,7 +232,7 @@ class OpenGLExample
 		glClearColor(0.0f, 0.0f, 0.2f, 1.0f);
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
-		glDrawArrays(GL_TRIANGLES, 0, 9);
+		glDrawArrays(GL_TRIANGLES, 0, 3);
 
 		glfwSwapBuffers(window);
 
@@ -357,4 +357,4 @@ int main(void)
 	glfwTerminate();
 
 	exit(EXIT_SUCCESS);
-}
\ No newline at end of file
+}