[Performous-commit] Tapio Vierros : Handle GL_TEXTURE_MAX_ANISOTROPY_EXT as a potential trouble maker.

[Tapio V. <aa...@us...>]

Module: performous
Branch: master
Commit: 1fa9df0237d4d992acefcf13c9380fa73c01862c

Author: Tapio Vierros <tap...@gm...>
Date:   Wed May 19 12:32:03 2010 +0300

Handle GL_TEXTURE_MAX_ANISOTROPY_EXT as a potential trouble maker.

---

 game/surface.cc |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/game/surface.cc b/game/surface.cc
index e8c1edc..04403fe 100644
--- a/game/surface.cc
+++ b/game/surface.cc
@@ -85,7 +85,13 @@ void Texture::load(unsigned int width, unsigned int height, pix::Format format,
 	glTexParameterf(type(), GL_TEXTURE_WRAP_S, GL_REPEAT);
 	glTexParameterf(type(), GL_TEXTURE_WRAP_T, GL_REPEAT);
 	//glTexParameterf(type(), GL_TEXTURE_MAX_LEVEL, 1);
-	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 16.0f);
+	glutil::GLErrorChecker glerror1("Texture::load - glTexParameterf");
+
+	// Anisotropy is potential trouble maker
+	if (GLEW_EXT_texture_filter_anisotropic)
+		glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 16.0f);
+	glutil::GLErrorChecker glerror2("Texture::load - MAX_ANISOTROPY_EXT");
+
 	glTexParameteri(type(), GL_GENERATE_MIPMAP, GL_TRUE);
 	PixFmt const& f = getPixFmt(format);
 	glPixelStorei(GL_UNPACK_SWAP_BYTES, f.swap);
@@ -105,7 +111,7 @@ void Texture::load(unsigned int width, unsigned int height, pix::Format format,
 		glTexImage2D(type(), 0, GL_RGBA, newWidth, newHeight, 0, f.format, f.type, &outBuf[0]);
 	}
 	// Check for OpenGL errors
-	glutil::GLErrorChecker glerror("Texture::load");
+	glutil::GLErrorChecker glerror3("Texture::load");
 }
 
 void Surface::load(unsigned int width, unsigned int height, pix::Format format, unsigned char const* buffer, float ar) {