From 82fde479a9e02ee8559ae1f1c1c8eb76c8eb7ee7 Mon Sep 17 00:00:00 2001
From: Kevin Strasser <kevin.strasser@intel.com>
Date: Thu, 24 Jan 2019 16:44:06 -0800
Subject: [PATCH 07/12] BACKPORT: dri: Handle configs with floating point pixel
 data
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In order to handle pixel formats that consist of floating point data, enable
floatMode field in the dri config, and set __DRI_ATTRIB_FLOAT_BIT in the
render type attribute.

Signed-off-by: Kevin Strasser <kevin.strasser@intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
(cherry picked from commit 86d31c2c120c458a8df99921ba49773f9e44651a)

 Conflicts:Trivial change from upstream.
	src/mesa/drivers/dri/common/utils.c

Change-Id: Ibd18361abafead7b646ceedc56c78fc3bfa5cea3
---
 src/mesa/drivers/dri/common/utils.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mesa/drivers/dri/common/utils.c b/src/mesa/drivers/dri/common/utils.c
index 62780e2b1dc..97955d7aa99 100644
--- a/src/mesa/drivers/dri/common/utils.c
+++ b/src/mesa/drivers/dri/common/utils.c
@@ -226,6 +226,7 @@ driCreateConfigs(mesa_format format,
    int blue_bits;
    int alpha_bits;
    bool is_srgb;
+   bool is_float;
 
    switch (format) {
    case MESA_FORMAT_B5G6R5_UNORM:
@@ -279,6 +280,7 @@ driCreateConfigs(mesa_format format,
    blue_bits = _mesa_get_format_bits(format, GL_BLUE_BITS);
    alpha_bits = _mesa_get_format_bits(format, GL_ALPHA_BITS);
    is_srgb = _mesa_get_format_color_encoding(format) == GL_SRGB;
+   is_float = _mesa_get_format_datatype(format) == GL_FLOAT;
 
    num_modes = num_depth_stencil_bits * num_db_modes * num_accum_bits * num_msaa_modes;
    configs = calloc(num_modes + 1, sizeof *configs);
@@ -308,6 +310,7 @@ driCreateConfigs(mesa_format format,
 		    c++;
 
 		    memset(modes, 0, sizeof *modes);
+		    modes->floatMode = is_float;
 		    modes->redBits   = red_bits;
 		    modes->greenBits = green_bits;
 		    modes->blueBits  = blue_bits;
@@ -481,6 +484,8 @@ driGetConfigAttribIndex(const __DRIconfig *config,
     case __DRI_ATTRIB_RENDER_TYPE:
         /* no support for color index mode */
 	*value = __DRI_ATTRIB_RGBA_BIT;
+        if (config->modes.floatMode)
+            *value |= __DRI_ATTRIB_FLOAT_BIT;
 	break;
     case __DRI_ATTRIB_CONFIG_CAVEAT:
 	if (config->modes.visualRating == GLX_NON_CONFORMANT_CONFIG)
-- 
2.21.0