From 0bc71d84f8ca2b8cbe48eae8769fb16958b98531 Mon Sep 17 00:00:00 2001
From: raysan5 <raysan5@gmail.com>
Date: Thu, 2 Jun 2016 20:23:09 +0200
Subject: Added functions to customize internal matrix

Internal modelview and projection matrices can be replaced before
drawing.
---
 src/rlgl.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

(limited to 'src/rlgl.c')

diff --git a/src/rlgl.c b/src/rlgl.c
index cfa6e2e6..6beececb 100644
--- a/src/rlgl.c
+++ b/src/rlgl.c
@@ -28,7 +28,7 @@
 
 #include "rlgl.h"
 
-#include <stdio.h>                  // Standard input / output lib
+#include <stdio.h>                  // Required for: fopen(), fclose(), fread()... [Used only on ReadTextFile()]
 #include <stdlib.h>                 // Required for: malloc(), free(), rand()
 #include <string.h>                 // Required for: strcmp(), strlen(), strtok()
 
@@ -59,8 +59,8 @@
 #endif
 
 #if defined(RLGL_STANDALONE)
-    #include <stdarg.h>             // Required for: va_list, va_start(), vfprintf(), va_end()
-#endif                              // NOTE: Used on TraceLog()
+    #include <stdarg.h>             // Required for: va_list, va_start(), vfprintf(), va_end() [Used only on TraceLog()]
+#endif
 
 //----------------------------------------------------------------------------------
 // Defines and Macros
@@ -355,7 +355,6 @@ void rlRotatef(float angleDeg, float x, float y, float z)
     Vector3 axis = (Vector3){ x, y, z };
     VectorNormalize(&axis);
     matRotation = MatrixRotate(axis, angleDeg*DEG2RAD);
-
     MatrixTranspose(&matRotation);
 
     *currentMatrix = MatrixMultiply(*currentMatrix, matRotation);
@@ -2153,7 +2152,7 @@ void UnloadShader(Shader shader)
     }
 }
 
-// Set custom shader to be used on batch draw
+// Begin custom shader mode
 void BeginShaderMode(Shader shader)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
@@ -2165,7 +2164,7 @@ void BeginShaderMode(Shader shader)
 #endif
 }
 
-// Set default shader to be used in batch draw
+// End custom shader mode (returns to default shader)
 void EndShaderMode(void)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
@@ -2251,6 +2250,18 @@ void SetShaderValueMatrix(Shader shader, int uniformLoc, Matrix mat)
 #endif
 }
 
+// Set a custom projection matrix (replaces internal projection matrix)
+void SetMatrixProjection(Matrix proj)
+{
+    projection = proj;
+}
+
+// Set a custom modelview matrix (replaces internal modelview matrix)
+void SetMatrixModelview(Matrix view)
+{
+    modelview = view;
+}
+
 // Begin blending mode (alpha, additive, multiplied)
 // NOTE: Only 3 blending modes supported, default blend mode is alpha
 void BeginBlendMode(int mode)
@@ -3068,7 +3079,7 @@ static void UnloadDefaultBuffers(void)
     free(quads.indices);
 }
 
-// Sets shader uniform values for lights array
+// Setup shader uniform values for lights array
 // NOTE: It would be far easier with shader UBOs but are not supported on OpenGL ES 2.0f
 static void SetShaderLights(Shader shader)
 {
-- 
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