From 1dde9929908a3bba4b173edbe47d242ec47c7699 Mon Sep 17 00:00:00 2001
From: Palana <palana@stunned.de>
Date: Sun, 22 Dec 2013 04:47:01 +0100
Subject: [PATCH] remove mipmap texture filter from min_filter for rectangle
 textures

---
 libobs-opengl/gl-subsystem.c | 24 +++++++++++++++++++++++-
 libobs/graphics/graphics.h   |  2 +-
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/libobs-opengl/gl-subsystem.c b/libobs-opengl/gl-subsystem.c
index cc27e4c78..b869876cd 100644
--- a/libobs-opengl/gl-subsystem.c
+++ b/libobs-opengl/gl-subsystem.c
@@ -182,6 +182,24 @@ enum gs_texture_type device_gettexturetype(device_t device,
 	return texture->type;
 }
 
+static void strip_mipmap_filter(GLint *filter)
+{
+	switch (*filter) {
+		case GL_NEAREST:
+		case GL_LINEAR:
+			return;
+		case GL_NEAREST_MIPMAP_NEAREST:
+		case GL_NEAREST_MIPMAP_LINEAR:
+			*filter = GL_NEAREST;
+			return;
+		case GL_LINEAR_MIPMAP_NEAREST:
+		case GL_LINEAR_MIPMAP_LINEAR:
+			*filter = GL_LINEAR;
+			return;
+	}
+	*filter = GL_NEAREST;
+}
+
 static bool load_texture_sampler(texture_t tex, samplerstate_t ss)
 {
 	bool success = true;
@@ -196,8 +214,12 @@ static bool load_texture_sampler(texture_t tex, samplerstate_t ss)
 
 	samplerstate_addref(ss);
 
+	GLint min_filter = ss->min_filter;
+	if (texture_isrect(tex))
+		strip_mipmap_filter(&min_filter);
+
 	if (!gl_tex_param_i(tex->gl_target, GL_TEXTURE_MIN_FILTER,
-				ss->min_filter))
+				min_filter))
 		success = false;
 	if (!gl_tex_param_i(tex->gl_target, GL_TEXTURE_MAG_FILTER,
 				ss->mag_filter))
diff --git a/libobs/graphics/graphics.h b/libobs/graphics/graphics.h
index 05aeec851..87e584c38 100644
--- a/libobs/graphics/graphics.h
+++ b/libobs/graphics/graphics.h
@@ -643,7 +643,7 @@ EXPORT bool     texture_map(texture_t tex, void **ptr, uint32_t *row_bytes);
 EXPORT void     texture_unmap(texture_t tex);
 /** special-case function (GL only) - specifies whether the texture is a
  * GL_TEXTURE_RECTANGLE type, which doesn't use normalized texture
- * coordinates */
+ * coordinates, doesn't support mipmapping, and requires address clamping */
 EXPORT bool     texture_isrect(texture_t tex);
 
 EXPORT void     cubetexture_destroy(texture_t cubetex);