From 0f3aee888efa820cb9875cfebc83cf8cc855f599 Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Mon, 3 Oct 2016 09:40:56 -0600
Subject: [PATCH] mesa: call ctx->Driver.TexParameter() in
 texture_buffer_range()
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To inform drivers of texture buffer offset/size changes, as we do for
other texture object parameters.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
---
 src/mesa/main/teximage.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index df8f0bcd454..411ec49efd1 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -5046,6 +5046,8 @@ texture_buffer_range(struct gl_context *ctx,
                      GLintptr offset, GLsizeiptr size,
                      const char *caller)
 {
+   GLintptr oldOffset = texObj->BufferOffset;
+   GLsizeiptr oldSize = texObj->BufferSize;
    mesa_format format;
 
    /* NOTE: ARB_texture_buffer_object has interactions with
@@ -5078,6 +5080,17 @@ texture_buffer_range(struct gl_context *ctx,
    }
    _mesa_unlock_texture(ctx, texObj);
 
+   if (ctx->Driver.TexParameter) {
+      if (offset != oldOffset) {
+         ctx->Driver.TexParameter(ctx, texObj, GL_TEXTURE_BUFFER_OFFSET,
+                                  (const GLfloat *) &offset);
+      }
+      if (size != oldSize) {
+         ctx->Driver.TexParameter(ctx, texObj, GL_TEXTURE_BUFFER_SIZE,
+                                  (const GLfloat *) &size);
+      }
+   }
+
    ctx->NewDriverState |= ctx->DriverFlags.NewTextureBuffer;
 
    if (bufObj) {
-- 
2.30.2