X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbackends%2Fopengl%2Ftexture_backend.cpp;h=ba6486778ac04b67504360e136f4774353b50ff3;hb=8e58fc4da8443cb67fe4cd70d6f68de2be73011d;hp=fe4679f63d4fe0815a7b808a2f13f02d32a1d32b;hpb=160e9eea29bd10034733d59507fa1bcca36be401;p=libs%2Fgl.git

diff --git a/source/backends/opengl/texture_backend.cpp b/source/backends/opengl/texture_backend.cpp
index fe4679f6..ba648677 100644
--- a/source/backends/opengl/texture_backend.cpp
+++ b/source/backends/opengl/texture_backend.cpp
@@ -12,23 +12,11 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-int OpenGLTexture::swizzle_orders[] =
-{
-	GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA,
-	GL_RED, GL_RED, GL_RED, GL_ONE,
-	GL_RED, GL_RED, GL_RED, GL_GREEN,
-	GL_BLUE, GL_GREEN, GL_RED, GL_ALPHA
-};
-
 OpenGLTexture *OpenGLTexture::scratch_binding = 0;
 
-OpenGLTexture::OpenGLTexture(unsigned t, bool create):
-	id(0),
+OpenGLTexture::OpenGLTexture(unsigned t):
 	target(t)
 {
-	if(create)
-		generate_id();
-
 	static bool alignment_init = false;
 	if(!alignment_init)
 	{
@@ -45,10 +33,10 @@ OpenGLTexture::~OpenGLTexture()
 		glDeleteTextures(1, &id);
 }
 
-void OpenGLTexture::generate_id()
+void OpenGLTexture::create()
 {
 	if(id)
-		throw invalid_operation("OpenGLTexture::generate_id");
+		throw invalid_operation("OpenGLTexture::create");
 	if(ARB_direct_state_access)
 		glCreateTextures(target, 1, &id);
 	else
@@ -67,23 +55,24 @@ void OpenGLTexture::require_swizzle()
 
 void OpenGLTexture::apply_swizzle()
 {
-	Texture::FormatSwizzle swizzle = static_cast<const Texture *>(this)->swizzle;
-	if(swizzle==Texture::NO_SWIZZLE)
+	ComponentSwizzle swizzle = static_cast<const Texture *>(this)->swizzle;
+	if(swizzle==NO_SWIZZLE)
 		return;
 
+	const int *swizzle_order = get_gl_swizzle(swizzle);
 	if(get_backend_api()==OPENGL_ES)
 	{
-		set_parameter_i(GL_TEXTURE_SWIZZLE_R, swizzle_orders[swizzle*4]);
-		set_parameter_i(GL_TEXTURE_SWIZZLE_G, swizzle_orders[swizzle*4+1]);
-		set_parameter_i(GL_TEXTURE_SWIZZLE_B, swizzle_orders[swizzle*4+2]);
-		set_parameter_i(GL_TEXTURE_SWIZZLE_A, swizzle_orders[swizzle*4+3]);
+		set_parameter_i(GL_TEXTURE_SWIZZLE_R, swizzle_order[0]);
+		set_parameter_i(GL_TEXTURE_SWIZZLE_G, swizzle_order[1]);
+		set_parameter_i(GL_TEXTURE_SWIZZLE_B, swizzle_order[2]);
+		set_parameter_i(GL_TEXTURE_SWIZZLE_A, swizzle_order[3]);
 	}
 	else
 	{
 		if(ARB_direct_state_access)
-			glTextureParameteriv(id, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
+			glTextureParameteriv(id, GL_TEXTURE_SWIZZLE_RGBA, swizzle_order);
 		else
-			glTexParameteriv(target, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
+			glTexParameteriv(target, GL_TEXTURE_SWIZZLE_RGBA, swizzle_order);
 	}
 }