asahi: Add ASAHI_MESA_DEBUG=no16 option

A lot of dEQP failures go away with 32-bit forced...

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11718>

diff --git a/src/asahi/lib/agx_device.h b/src/asahi/lib/agx_device.h
index 138181d..b51d08f 100644 (file)
--- a/src/asahi/lib/agx_device.h
+++ b/src/asahi/lib/agx_device.h
@@ -36,6 +36,7 @@
 enum agx_dbg {
    AGX_DBG_TRACE = BITFIELD_BIT(0),
    AGX_DBG_DEQP  = BITFIELD_BIT(1),
+   AGX_DBG_NO16  = BITFIELD_BIT(2),
 };
 
 struct agx_device {

diff --git a/src/gallium/drivers/asahi/agx_pipe.c b/src/gallium/drivers/asahi/agx_pipe.c
index b4c4107..d34c059 100644 (file)
--- a/src/gallium/drivers/asahi/agx_pipe.c
+++ b/src/gallium/drivers/asahi/agx_pipe.c
@@ -48,6 +48,7 @@
 static const struct debug_named_value agx_debug_options[] = {
    {"trace",     AGX_DBG_TRACE,    "Trace the command stream"},
    {"deqp",      AGX_DBG_DEQP,     "Hacks for dEQP"},
+   {"no16",      AGX_DBG_NO16,     "Disable 16-bit support"},
    DEBUG_NAMED_VALUE_END
 };
 
@@ -846,6 +847,7 @@ agx_get_shader_param(struct pipe_screen* pscreen,
                      enum pipe_shader_cap param)
 {
    bool is_deqp = agx_device(pscreen)->debug & AGX_DBG_DEQP;
+   bool is_no16 = agx_device(pscreen)->debug & AGX_DBG_NO16;
 
    if (shader != PIPE_SHADER_VERTEX &&
        shader != PIPE_SHADER_FRAGMENT)
@@ -890,13 +892,15 @@ agx_get_shader_param(struct pipe_screen* pscreen,
    case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
       return is_deqp;
 
-   case PIPE_SHADER_CAP_FP16:
    case PIPE_SHADER_CAP_INTEGERS:
+      return true;
+
+   case PIPE_SHADER_CAP_FP16:
    case PIPE_SHADER_CAP_GLSL_16BIT_CONSTS:
    case PIPE_SHADER_CAP_FP16_DERIVATIVES:
    case PIPE_SHADER_CAP_FP16_CONST_BUFFERS:
    case PIPE_SHADER_CAP_INT16:
-      return 1;
+      return !is_no16;
 
    case PIPE_SHADER_CAP_INT64_ATOMICS:
    case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED: