1 files changed, 132 insertions, 0 deletions
diff --git a/src/renderergl2/tr_dsa.c b/src/renderergl2/tr_dsa.c
new file mode 100644
index 00000000..55a731d9
--- /dev/null
+++ b/src/renderergl2/tr_dsa.c
@@ -0,0 +1,132 @@
+/*
+===========================================================================
+Copyright (C) 2016 James Canete
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+===========================================================================
+*/
+
+#include "tr_local.h"
+
+#include "tr_dsa.h"
+
+static struct
+{
+	GLuint textures[NUM_TEXTURE_BUNDLES];
+	GLenum texunit;
+}
+glDsaState;
+
+void GL_BindNullTextures()
+{
+	int i;
+
+	if (glRefConfig.directStateAccess)
+	{
+		for (i = 0; i < NUM_TEXTURE_BUNDLES; i++)
+		{
+			qglBindMultiTexture(GL_TEXTURE0_ARB + i, GL_TEXTURE_2D, 0);
+			glDsaState.textures[i] = 0;
+		}
+	}
+	else
+	{
+		for (i = 0; i < NUM_TEXTURE_BUNDLES; i++)
+		{
+			qglActiveTextureARB(GL_TEXTURE0_ARB + i);
+			qglBindTexture(GL_TEXTURE_2D, 0);
+			glDsaState.textures[i] = 0;
+		}
+
+		qglActiveTextureARB(GL_TEXTURE0_ARB);
+		glDsaState.texunit = GL_TEXTURE0_ARB;
+	}
+}
+
+void GL_BindMultiTexture(GLenum texunit, GLenum target, GLuint texture)
+{
+	GLuint tmu = texunit - GL_TEXTURE0_ARB;
+
+	if (glDsaState.textures[tmu] == texture)
+		return;
+
+	qglBindMultiTexture(texunit, target, texture);
+	glDsaState.textures[tmu] = texture;
+}
+
+GLvoid APIENTRY GLDSA_BindMultiTexture(GLenum texunit, GLenum target, GLuint texture)
+{
+	if (glDsaState.texunit != texunit)
+	{
+		qglActiveTextureARB(texunit);
+		glDsaState.texunit = texunit;
+	}
+
+	qglBindTexture(target, texture);
+}
+
+GLvoid APIENTRY GLDSA_TextureParameterf(GLuint texture, GLenum target, GLenum pname, GLfloat param)
+{
+	GL_BindMultiTexture(glDsaState.texunit, target, texture);
+	qglTexParameterf(target, pname, param);
+}
+
+GLvoid APIENTRY GLDSA_TextureParameteri(GLuint texture, GLenum target, GLenum pname, GLint param)
+{
+	GL_BindMultiTexture(glDsaState.texunit, target, texture);
+	qglTexParameteri(target, pname, param);
+}
+
+GLvoid APIENTRY GLDSA_TextureImage2D(GLuint texture, GLenum target, GLint level, GLint internalformat,
+	GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels)
+{
+	GL_BindMultiTexture(glDsaState.texunit, target, texture);
+	qglTexImage2D(target, level, internalformat, width, height, border, format, type, pixels);
+}
+
+GLvoid APIENTRY GLDSA_TextureSubImage2D(GLuint texture, GLenum target, GLint level, GLint xoffset, GLint yoffset,
+	GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels)
+{
+	GL_BindMultiTexture(glDsaState.texunit, target, texture);
+	qglTexSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixels);
+}
+
+GLvoid APIENTRY GLDSA_CopyTextureImage2D(GLuint texture, GLenum target, GLint level, GLenum internalformat,
+	GLint x, GLint y, GLsizei width, GLsizei height, GLint border)
+{
+	GL_BindMultiTexture(glDsaState.texunit, target, texture);
+	qglCopyTexImage2D(target, level, internalformat, x, y, width, height, border);
+}
+
+GLvoid APIENTRY  GLDSA_CompressedTextureImage2D(GLuint texture, GLenum target, GLint level, GLenum internalformat,
+	GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid *data)
+{
+	GL_BindMultiTexture(glDsaState.texunit, target, texture);
+	qglCompressedTexImage2DARB(target, level, internalformat, width, height, border, imageSize, data);
+}
+
+GLvoid APIENTRY GLDSA_CompressedTextureSubImage2D(GLuint texture, GLenum target, GLint level,
+	GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format,
+	GLsizei imageSize, const GLvoid *data)
+{
+	GL_BindMultiTexture(glDsaState.texunit, target, texture);
+	qglCompressedTexSubImage2DARB(target, level, xoffset, yoffset, width, height, format, imageSize, data);
+}
+
+GLvoid APIENTRY GLDSA_GenerateTextureMipmap(GLuint texture, GLenum target)
+{
+	GL_BindMultiTexture(glDsaState.texunit, target, texture);
+	qglGenerateMipmapEXT(target);
+}