From 4ff98f34bbc3233f5eca61dfe07c2336c52918ce Mon Sep 17 00:00:00 2001
From: raysan5 <raysan5@gmail.com>
Date: Thu, 27 Oct 2016 13:40:48 +0200
Subject: [PATCH] Function to set texture parameters -IN PROGRESS-

---
 src/rlgl.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 src/rlgl.h | 11 +++++++++--
 2 files changed, 51 insertions(+), 2 deletions(-)

diff --git a/src/rlgl.c b/src/rlgl.c
index 806879586..0a7e35836 100644
--- a/src/rlgl.c
+++ b/src/rlgl.c
@@ -871,6 +871,48 @@ void rlDisableTexture(void)
 #endif
 }
 
+// Set texture parameters
+// TODO: Review this function to choose right filter/wrap value
+void rlTextureParameters(unsigned int id, int param, int value)
+{
+/*
+// TextureWrapMode
+#define GL_REPEAT                         0x2901
+#define GL_CLAMP_TO_EDGE                  0x812F
+
+// TextureMagFilter
+#define GL_NEAREST                        0x2600
+#define GL_LINEAR                         0x2601
+
+// TextureMinFilter 
+#define GL_NEAREST                        0x2600
+#define GL_LINEAR                         0x2601
+#define GL_NEAREST_MIPMAP_NEAREST         0x2700
+#define GL_LINEAR_MIPMAP_NEAREST          0x2701
+#define GL_NEAREST_MIPMAP_LINEAR          0x2702
+#define GL_LINEAR_MIPMAP_LINEAR           0x2703
+*/    
+    
+    int glValue = 0;
+    
+    glBindTexture(GL_TEXTURE_2D, id);
+    
+    switch (value)
+    {
+        case FILTER_POINT: glValue = GL_NEAREST; break;
+        case FILTER_BILINEAR: glValue = GL_LINEAR; break;
+        case FILTER_TRILINEAR: glValue = GL_LINEAR; break;
+        //case WRAP_REPEAT: glValue = GL_REPEAT; break;
+        //case WRAP_CLAMP: glValue = GL_CLAMP_TO_EDGE; break;
+        //case WRAP_MIRROR: glValue = GL_NEAREST; break;
+        default: break;
+    }
+
+    glTexParameteri(GL_TEXTURE_2D, param, glValue);
+
+    glBindTexture(GL_TEXTURE_2D, 0);
+}
+
 // Enable rendering to texture (fbo)
 void rlEnableRenderTexture(unsigned int id)
 {
diff --git a/src/rlgl.h b/src/rlgl.h
index d5a39aaf7..b6679ef68 100644
--- a/src/rlgl.h
+++ b/src/rlgl.h
@@ -90,15 +90,21 @@
     #define MAX_QUADS_BATCH         1024    // Be careful with text, every letter maps a quad
 #endif
 
+// Texture parameters (equivalent to OpenGL defines)
+#define RL_TEXTURE_MAG_FILTER     0x2800
+#define RL_TEXTURE_MIN_FILTER     0x2801
+#define RL_TEXTURE_WRAP_S         0x2802
+#define RL_TEXTURE_WRAP_T         0x2803
+
 //----------------------------------------------------------------------------------
 // Types and Structures Definition
 //----------------------------------------------------------------------------------
+typedef enum { OPENGL_11 = 1, OPENGL_21, OPENGL_33, OPENGL_ES_20 } GlVersion;
+
 typedef enum { RL_PROJECTION, RL_MODELVIEW, RL_TEXTURE } MatrixMode;
 
 typedef enum { RL_LINES, RL_TRIANGLES, RL_QUADS } DrawMode;
 
-typedef enum { OPENGL_11 = 1, OPENGL_21, OPENGL_33, OPENGL_ES_20 } GlVersion;
-
 #if defined(RLGL_STANDALONE)
     #ifndef __cplusplus
     // Boolean type
@@ -296,6 +302,7 @@ void rlColor4f(float x, float y, float z, float w); // Define one vertex (color)
 //------------------------------------------------------------------------------------
 void rlEnableTexture(unsigned int id);          // Enable texture usage
 void rlDisableTexture(void);                    // Disable texture usage
+void rlTextureParameters(unsigned int id, int param, int value); // Set texture parameters (filter, wrap)
 void rlEnableRenderTexture(unsigned int id);    // Enable render texture (fbo)
 void rlDisableRenderTexture(void);              // Disable render texture (fbo), return to default framebuffer
 void rlEnableDepthTest(void);                   // Enable depth test