From c04c74bc5da454478fd0dbf3b25dd54190ac0942 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <darktama@iinet.net.au>
Date: Fri, 8 Dec 2006 14:12:47 +0000
Subject: [PATCH] Skeletal extension handling across chipsets.

---
 src/mesa/drivers/dri/nouveau/nouveau_context.c | 45 ++++++++++++++++++++++++++
 src/mesa/drivers/dri/nouveau/nouveau_screen.c  | 10 ++++++
 src/mesa/drivers/dri/nouveau/nouveau_shader.c  |  3 --
 3 files changed, 55 insertions(+), 3 deletions(-)

diff --git a/src/mesa/drivers/dri/nouveau/nouveau_context.c b/src/mesa/drivers/dri/nouveau/nouveau_context.c
index f48c544..53d26e0 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_context.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_context.c
@@ -65,11 +65,44 @@ static const struct dri_debug_control debug_control[] =
 	{ NULL,    0 }
 };
 
+#define need_GL_ARB_vertex_program
+#include "extension_helper.h"
+
 const struct dri_extension common_extensions[] =
 {
 	{ NULL,    0 }
 };
 
+const struct dri_extension nv10_extensions[] =
+{
+	{ NULL,    0 }
+};
+
+const struct dri_extension nv20_extensions[] =
+{
+	{ NULL,    0 }
+};
+
+const struct dri_extension nv30_extensions[] =
+{
+	{ "GL_ARB_fragment_program",	NULL                            },
+	{ NULL,    0 }
+};
+
+const struct dri_extension nv40_extensions[] =
+{
+   /* ARB_vp can be moved to nv20/30 once the shader backend has been
+    * written for those cards.
+    */
+	{ "GL_ARB_vertex_program",	GL_ARB_vertex_program_functions },
+	{ NULL, 0 }
+};
+
+const struct dri_extension nv50_extensions[] =
+{
+	{ NULL,    0 }
+};
+
 /* Create the device specific context.
  */
 GLboolean nouveauCreateContext( const __GLcontextModes *glVisual,
@@ -137,6 +170,18 @@ GLboolean nouveauCreateContext( const __GLcontextModes *glVisual,
 	nmesa->sarea = (drm_nouveau_sarea_t *)((char *)sPriv->pSAREA +
 			screen->sarea_priv_offset);
 
+	/* Enable any supported extensions */
+	driInitExtensions(ctx, common_extensions, GL_TRUE);
+	if (nmesa->screen->card->type >= NV_10)
+		driInitExtensions(ctx, nv10_extensions, GL_FALSE);
+	if (nmesa->screen->card->type >= NV_20)
+		driInitExtensions(ctx, nv20_extensions, GL_FALSE);
+	if (nmesa->screen->card->type >= NV_30)
+		driInitExtensions(ctx, nv30_extensions, GL_FALSE);
+	if (nmesa->screen->card->type >= NV_40)
+		driInitExtensions(ctx, nv40_extensions, GL_FALSE);
+	if (nmesa->screen->card->type >= NV_50)
+		driInitExtensions(ctx, nv50_extensions, GL_FALSE);
 
 	nmesa->current_primitive = -1;
 
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_screen.c b/src/mesa/drivers/dri/nouveau/nouveau_screen.c
index 93f6682..8e548db 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_screen.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_screen.c
@@ -53,6 +53,11 @@ DRI_CONF_END;
 static const GLuint __driNConfigOptions = 1;
 
 extern const struct dri_extension common_extensions[];
+extern const struct dri_extension nv10_extensions[];
+extern const struct dri_extension nv20_extensions[];
+extern const struct dri_extension nv30_extensions[];
+extern const struct dri_extension nv40_extensions[];
+extern const struct dri_extension nv50_extensions[];
 
 static nouveauScreenPtr nouveauCreateScreen(__DRIscreenPrivate *sPriv)
 {
@@ -352,6 +357,11 @@ void * __driCreateNewScreen_20050727( __DRInativeDisplay *dpy, int scrn, __DRIsc
 		 * Hello chicken.  Hello egg.  How are you two today?
 		 */
 		driInitExtensions( NULL, common_extensions, GL_FALSE );
+		driInitExtensions( NULL,   nv10_extensions, GL_FALSE );
+		driInitExtensions( NULL,   nv10_extensions, GL_FALSE );
+		driInitExtensions( NULL,   nv30_extensions, GL_FALSE );
+		driInitExtensions( NULL,   nv40_extensions, GL_FALSE );
+		driInitExtensions( NULL,   nv50_extensions, GL_FALSE );
 	}
 
 	return (void *) psp;
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_shader.c b/src/mesa/drivers/dri/nouveau/nouveau_shader.c
index 4dedefe..e3082eb 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_shader.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_shader.c
@@ -184,7 +184,6 @@ nouveauShaderInitFuncs(GLcontext * ctx)
       return;
    }
 
-   _mesa_enable_extension(ctx, "GL_ARB_vertex_program");
    ctx->Const.VertexProgram.MaxNativeInstructions    = nmesa->VPfunc.MaxInst;
    ctx->Const.VertexProgram.MaxNativeAluInstructions = nmesa->VPfunc.MaxInst;
    ctx->Const.VertexProgram.MaxNativeTexInstructions = nmesa->VPfunc.MaxInst;
@@ -196,8 +195,6 @@ nouveauShaderInitFuncs(GLcontext * ctx)
    ctx->Const.VertexProgram.MaxNativeParameters      = nmesa->VPfunc.MaxConst;
 
    if (nmesa->screen->card->type >= NV_30) {
-      _mesa_enable_extension(ctx, "GL_ARB_fragment_program");
-
       ctx->Const.FragmentProgram.MaxNativeInstructions    = nmesa->FPfunc.MaxInst;
       ctx->Const.FragmentProgram.MaxNativeAluInstructions = nmesa->FPfunc.MaxInst;
       ctx->Const.FragmentProgram.MaxNativeTexInstructions = nmesa->FPfunc.MaxInst;
-- 
2.7.4