From 02937ccd2cb974bd1e96a8ebfa51a4d69d5082f1 Mon Sep 17 00:00:00 2001
From: Luke Benstead <kazade@gmail.com>
Date: Thu, 28 Feb 2019 08:46:13 +0000
Subject: [PATCH] Add stub with just GL_PROJECTION_MATRIX supported

---
 GL/matrix.c  |  4 ++++
 GL/private.h |  2 ++
 GL/state.c   | 12 ++++++++++++
 3 files changed, 18 insertions(+)

diff --git a/GL/matrix.c b/GL/matrix.c
index d4ce3ff..85f0233 100644
--- a/GL/matrix.c
+++ b/GL/matrix.c
@@ -33,6 +33,10 @@ static const matrix_t IDENTITY = {
 
 void APIENTRY glDepthRange(GLclampf n, GLclampf f);
 
+matrix_t* _glGetProjectionMatrix() {
+    return (matrix_t*) stack_top(&MATRIX_STACKS[1]);
+}
+
 void initMatrices() {
     init_stack(&MATRIX_STACKS[0], sizeof(matrix_t), 32);
     init_stack(&MATRIX_STACKS[1], sizeof(matrix_t), 32);
diff --git a/GL/private.h b/GL/private.h
index c496e19..8fb07b0 100644
--- a/GL/private.h
+++ b/GL/private.h
@@ -108,6 +108,8 @@ void _matrixLoadModelView();
 void _matrixLoadTexture();
 void _applyRenderMatrix();
 
+matrix_t* _glGetProjectionMatrix();
+
 void wipeTextureOnFramebuffers(GLuint texture);
 GLubyte checkImmediateModeInactive(const char* func);
 
diff --git a/GL/state.c b/GL/state.c
index 96c0bf2..0fcfd81 100644
--- a/GL/state.c
+++ b/GL/state.c
@@ -563,6 +563,18 @@ void APIENTRY glGetBooleanv(GLenum pname, GLboolean* params) {
     }
 }
 
+void APIENTRY glGetFloatv(GLenum pname, GLfloat* params) {
+    switch(pname) {
+        case GL_PROJECTION_MATRIX:
+            memcpy(params, _glGetProjectionMatrix(), sizeof(float) * 16);
+        break;
+        default:
+            _glKosThrowError(GL_INVALID_ENUM, "glGetIntegerv");
+            _glKosPrintError();
+            break;
+    }
+}
+
 void APIENTRY glGetIntegerv(GLenum pname, GLint *params) {
     switch(pname) {
         case GL_MAX_LIGHTS: