dri: Define DRI_MutableRenderBuffer extensions

Define extensions DRI_MutableRenderBufferDriver and
DRI_MutableRenderBufferLoader. These are the two halves for
EGL_KHR_mutable_render_buffer.

Outside the DRI code there is one additional change.  Add
gl_config::mutableRenderBuffer to match
__DRI_ATTRIB_MUTABLE_RENDER_BUFFER. Neither are used yet.

Reviewed-by: Tapani Pälli <[email protected]>

4 files changed, 10 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/common/dri_util.c b/src/mesa/drivers/dri/common/dri_util.c
index d257cb644c8..be7b6e5535d 100644
--- a/src/mesa/drivers/dri/common/dri_util.c
+++ b/src/mesa/drivers/dri/common/dri_util.c
@@ -81,6 +81,8 @@ setupLoaderExtensions(__DRIscreen *psp,
 	    psp->swrast_loader = (__DRIswrastLoaderExtension *) extensions[i];
         if (strcmp(extensions[i]->name, __DRI_IMAGE_LOADER) == 0)
            psp->image.loader = (__DRIimageLoaderExtension *) extensions[i];
+        if (strcmp(extensions[i]->name, __DRI_MUTABLE_RENDER_BUFFER_LOADER) == 0)
+           psp->mutableRenderBuffer.loader = (__DRImutableRenderBufferLoaderExtension *) extensions[i];
     }
 }
 
diff --git a/src/mesa/drivers/dri/common/dri_util.h b/src/mesa/drivers/dri/common/dri_util.h
index 062c83f79ec..d6c7d07d4e0 100644
--- a/src/mesa/drivers/dri/common/dri_util.h
+++ b/src/mesa/drivers/dri/common/dri_util.h
@@ -216,6 +216,10 @@ struct __DRIscreenRec {
         const __DRIimageLoaderExtension *loader;
     } image;
 
+    struct {
+       const __DRImutableRenderBufferLoaderExtension *loader;
+    } mutableRenderBuffer;
+
     driOptionCache optionInfo;
     driOptionCache optionCache;
 
diff --git a/src/mesa/drivers/dri/common/utils.c b/src/mesa/drivers/dri/common/utils.c
index fc5e2d19f34..86169d5c214 100644
--- a/src/mesa/drivers/dri/common/utils.c
+++ b/src/mesa/drivers/dri/common/utils.c
@@ -409,6 +409,7 @@ static const struct { unsigned int attrib, offset; } attribMap[] = {
     __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS,	bindToTextureTargets),
     __ATTRIB(__DRI_ATTRIB_YINVERTED,			yInverted),
     __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE,	sRGBCapable),
+    __ATTRIB(__DRI_ATTRIB_MUTABLE_RENDER_BUFFER,	mutableRenderBuffer),
 
     /* The struct field doesn't matter here, these are handled by the
      * switch in driGetConfigAttribIndex.  We need them in the array
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 202268e710b..6c8724dca5b 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -213,6 +213,9 @@ struct gl_config
 
    /* EXT_framebuffer_sRGB */
    GLint sRGBCapable;
+
+   /* EGL_KHR_mutable_render_buffer */
+   GLuint mutableRenderBuffer; /* bool */
 };