From: Mikko Rasa <tdb@tdb.fi>
Date: Thu, 27 Oct 2016 22:02:40 +0000 (+0300)
Subject: Pull in sized depth component formats from ARB_depth_texture
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=0221e39a685c4f3122a0fae032a7888b5ce40579

Pull in sized depth component formats from ARB_depth_texture
---

diff --git a/extensions/arb_depth_texture.glext b/extensions/arb_depth_texture.glext
new file mode 100644
index 00000000..03a9725a
--- /dev/null
+++ b/extensions/arb_depth_texture.glext
@@ -0,0 +1 @@
+extension ARB_depth_texture
diff --git a/source/pixelformat.cpp b/source/pixelformat.cpp
index 679c6467..99f15307 100644
--- a/source/pixelformat.cpp
+++ b/source/pixelformat.cpp
@@ -96,6 +96,9 @@ PixelFormat get_base_pixelformat(PixelFormat pf)
 	case LUMINANCE_ALPHA32F:
 	case SLUMINANCE_ALPHA:
 	case SLUMINANCE8_ALPHA8: return LUMINANCE_ALPHA;
+	case DEPTH_COMPONENT16:
+	case DEPTH_COMPONENT24:
+	case DEPTH_COMPONENT32: return DEPTH_COMPONENT;
 	default: return pf;
 	}
 }
@@ -147,11 +150,15 @@ unsigned get_component_size(PixelFormat pf)
 	case RGBA16F:
 	case LUMINANCE16F:
 	case LUMINANCE_ALPHA16F:
+	case DEPTH_COMPONENT16:
 		return 2;
+	case DEPTH_COMPONENT24:
+		return 3;
 	case RGB32F:
 	case RGBA32F:
 	case LUMINANCE32F:
 	case LUMINANCE_ALPHA32F:
+	case DEPTH_COMPONENT32:
 		return 4;
 	default:
 		return 1;
@@ -191,6 +198,12 @@ void require_pixelformat(PixelFormat pf)
 	case BGRA:
 		{ static Require _req(EXT_bgra); }
 		break;
+	case DEPTH_COMPONENT:
+	case DEPTH_COMPONENT16:
+	case DEPTH_COMPONENT24:
+	case DEPTH_COMPONENT32:
+		{ static Require _req(ARB_depth_texture); }
+		break;
 	default:
 		break;
 	}
diff --git a/source/pixelformat.h b/source/pixelformat.h
index 7a562cc9..8e3e6901 100644
--- a/source/pixelformat.h
+++ b/source/pixelformat.h
@@ -4,6 +4,7 @@
 #include <msp/graphics/pixelformat.h>
 #include <msp/strings/lexicalcast.h>
 #include "gl.h"
+#include <msp/gl/extensions/arb_depth_texture.h>
 #include <msp/gl/extensions/arb_texture_float.h>
 #include <msp/gl/extensions/ext_bgra.h>
 #include <msp/gl/extensions/ext_texture_srgb.h>
@@ -17,6 +18,9 @@ enum PixelFormat
 {
 	STENCIL_INDEX   = GL_STENCIL_INDEX,
 	DEPTH_COMPONENT = GL_DEPTH_COMPONENT,
+	DEPTH_COMPONENT16 = GL_DEPTH_COMPONENT16,
+	DEPTH_COMPONENT24 = GL_DEPTH_COMPONENT24,
+	DEPTH_COMPONENT32 = GL_DEPTH_COMPONENT32,
 	RGB             = GL_RGB,
 	RGBA            = GL_RGBA,
 	RGB8            = GL_RGB8,
diff --git a/source/texture.cpp b/source/texture.cpp
index 004d78c2..fd144585 100644
--- a/source/texture.cpp
+++ b/source/texture.cpp
@@ -78,7 +78,7 @@ Texture::~Texture()
 
 DataType Texture::get_alloc_type(PixelFormat fmt)
 {
-	return (fmt==DEPTH_COMPONENT ? UNSIGNED_SHORT : UNSIGNED_BYTE);
+	return (get_base_pixelformat(fmt)==DEPTH_COMPONENT ? UNSIGNED_SHORT : UNSIGNED_BYTE);
 }
 
 void Texture::update_parameter(int mask) const