[Mesa-dev] [PATCH] meta: Generate and compile shaders everytime in setup_glsl_generate_mipmap()

[Anuj Phogat]

Fixes float-texture(mipmap.manual):
See Comment 6: https://bugs.freedesktop.org/show_bug.cgi?id=54296

NOTE: This is a candidate for stable branches.

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/mesa/drivers/common/meta.c |   40 ++++++++++++++++++++--------------------
 1 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 3d8e138..bb3b105 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -3135,21 +3135,21 @@ setup_glsl_generate_mipmap(struct gl_context *ctx,
     }
 
    /* Check if already initialized */
-   if (mipmap->ArrayObj != 0)
-      return;
-   /* create vertex array object */
-   _mesa_GenVertexArrays(1, &mipmap->ArrayObj);
-   _mesa_BindVertexArray(mipmap->ArrayObj);
+   if (mipmap->ArrayObj == 0) {
+      /* create vertex array object */
+      _mesa_GenVertexArrays(1, &mipmap->ArrayObj);
+      _mesa_BindVertexArray(mipmap->ArrayObj);
 
-   /* create vertex array buffer */
-   _mesa_GenBuffersARB(1, &mipmap->VBO);
-   _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, mipmap->VBO);
+      /* create vertex array buffer */
+      _mesa_GenBuffersARB(1, &mipmap->VBO);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, mipmap->VBO);
 
-   /* setup vertex arrays */
-   _mesa_VertexAttribPointerARB(0, 2, GL_FLOAT, GL_FALSE,
-                                sizeof(struct vertex), OFFSET(x));
-   _mesa_VertexAttribPointerARB(1, 3, GL_FLOAT, GL_FALSE,
-                                sizeof(struct vertex), OFFSET(tex));
+      /* setup vertex arrays */
+      _mesa_VertexAttribPointerARB(0, 2, GL_FLOAT, GL_FALSE,
+                                   sizeof(struct vertex), OFFSET(x));
+      _mesa_VertexAttribPointerARB(1, 3, GL_FLOAT, GL_FALSE,
+                                   sizeof(struct vertex), OFFSET(tex));
+   }
 
    /* Generate a fragment shader program appropriate for the texture target */
    setup_texture_sampler(target, &sampler);
@@ -3217,13 +3217,6 @@ meta_glsl_generate_mipmap_cleanup(struct gl_context *ctx,
    mipmap->ArrayObj = 0;
    _mesa_DeleteBuffersARB(1, &mipmap->VBO);
    mipmap->VBO = 0;
-   _mesa_DeleteObjectARB(mipmap->ShaderProg);
-   mipmap->ShaderProg = 0;
-
-   if (mipmap->IntegerShaderProg) {
-      _mesa_DeleteObjectARB(mipmap->IntegerShaderProg);
-      mipmap->IntegerShaderProg = 0;
-   }
 }
 
 
@@ -3460,6 +3453,13 @@ _mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target,
 
       _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
    }
+   _mesa_DeleteObjectARB(mipmap->ShaderProg);
+   mipmap->ShaderProg = 0;
+
+   if (mipmap->IntegerShaderProg) {
+      _mesa_DeleteObjectARB(mipmap->IntegerShaderProg);
+      mipmap->IntegerShaderProg = 0;
+   }
 
    if (ctx->Extensions.EXT_framebuffer_sRGB && srgbBufferSave) {
       _mesa_set_enable(ctx, GL_FRAMEBUFFER_SRGB_EXT, GL_TRUE);
-- 
1.7.7.6