From d58f7a24d1be7b8b50ebdc0c1c3ce26bd65317a5 Mon Sep 17 00:00:00 2001
From: Iago Toral Quiroga <itoral@igalia.com>
Date: Mon, 5 Aug 2024 10:38:35 +0200
Subject: [PATCH] v3d: do not expose EXT_float_blend
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This extension is all about exposing blending with 32-bit floating
point formats, which V3D doesn't support at all so we should not
be exposing it.

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30512>
---
 src/gallium/drivers/v3d/v3d_screen.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/gallium/drivers/v3d/v3d_screen.c b/src/gallium/drivers/v3d/v3d_screen.c
index 1316a76ee87..a457d9329d8 100644
--- a/src/gallium/drivers/v3d/v3d_screen.c
+++ b/src/gallium/drivers/v3d/v3d_screen.c
@@ -635,6 +635,14 @@ v3d_screen_is_format_supported(struct pipe_screen *pscreen,
                 return false;
         }
 
+        /* We do not support EXT_float_blend (blending with 32F formats)*/
+        if ((usage & PIPE_BIND_BLENDABLE) &&
+            (format == PIPE_FORMAT_R32G32B32A32_FLOAT ||
+             format == PIPE_FORMAT_R32G32_FLOAT ||
+             format == PIPE_FORMAT_R32_FLOAT)) {
+                return false;
+        }
+
         if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
             !v3d_tex_format_supported(&screen->devinfo, format)) {
                 return false;