etnaviv: update INT_FILTER choice for GLES3 formats

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>

src/gallium/drivers/etnaviv/etnaviv_format.c

@@ -271,6 +271,40 @@ translate_texture_format(enum pipe_format fmt)
    return formats[fmt].tex;
 }
 
+bool
+texture_use_int_filter(const struct pipe_sampler_view *so, bool tex_desc)
+{
+   switch (so->target) {
+   case PIPE_TEXTURE_1D_ARRAY:
+   case PIPE_TEXTURE_2D_ARRAY:
+      if (tex_desc)
+         break;
+   case PIPE_TEXTURE_3D:
+      return false;
+   default:
+      break;
+   }
+
+   /* only unorm formats can use int filter */
+   if (!util_format_is_unorm(so->format))
+      return false;
+
+   if (util_format_is_srgb(so->format))
+      return false;
+
+   switch (so->format) {
+   /* apparently D16 can't use int filter but D24 can */
+   case PIPE_FORMAT_Z16_UNORM:
+   case PIPE_FORMAT_R10G10B10A2_UNORM:
+   case PIPE_FORMAT_R10G10B10X2_UNORM:
+   case PIPE_FORMAT_ETC2_R11_UNORM:
+   case PIPE_FORMAT_ETC2_RG11_UNORM:
+      return false;
+   default:
+      return true;
+   }
+}
+
 bool
 texture_format_needs_swiz(enum pipe_format fmt)
 {

src/gallium/drivers/etnaviv/etnaviv_format.h

@@ -28,6 +28,7 @@
 #define ETNAVIV_FORMAT_H_
 
 #include "util/format/u_format.h"
+#include "pipe/p_state.h"
 #include <stdint.h>
 
 #define ETNA_NO_MATCH (~0)
@@ -37,6 +38,9 @@
 uint32_t
 translate_texture_format(enum pipe_format fmt);
 
+bool
+texture_use_int_filter(const struct pipe_sampler_view *so, bool tex_desc);
+
 bool
 texture_format_needs_swiz(enum pipe_format fmt);
 

src/gallium/drivers/etnaviv/etnaviv_texture_desc.c

@@ -127,7 +127,7 @@ etna_create_sampler_view_desc(struct pipe_context *pctx, struct pipe_resource *p
    if (util_format_is_srgb(so->format))
       sv->SAMP_CTRL1 |= VIVS_NTE_DESCRIPTOR_SAMP_CTRL1_SRGB;
 
-   if (!util_format_is_float(so->format) && so->target != PIPE_TEXTURE_3D)
+   if (texture_use_int_filter(so, true))
       sv->SAMP_CTRL0 |= VIVS_NTE_DESCRIPTOR_SAMP_CTRL0_INT_FILTER;
 
    /* Create texture descriptor */

src/gallium/drivers/etnaviv/etnaviv_texture_state.c

@@ -188,7 +188,7 @@ etna_create_sampler_view_state(struct pipe_context *pctx, struct pipe_resource *
       VIVS_TE_SAMPLER_LOG_SIZE_HEIGHT(etna_log2_fixp55(base_height)) |
       COND(util_format_is_srgb(so->format) && !astc, VIVS_TE_SAMPLER_LOG_SIZE_SRGB) |
       COND(astc, VIVS_TE_SAMPLER_LOG_SIZE_ASTC) |
-      COND(!util_format_is_float(so->format) && so->target != PIPE_TEXTURE_3D, VIVS_TE_SAMPLER_LOG_SIZE_INT_FILTER);
+      COND(texture_use_int_filter(so, false), VIVS_TE_SAMPLER_LOG_SIZE_INT_FILTER);
    sv->TE_SAMPLER_3D_CONFIG =
       VIVS_TE_SAMPLER_3D_CONFIG_DEPTH(base_depth) |
       VIVS_TE_SAMPLER_3D_CONFIG_LOG_DEPTH(etna_log2_fixp55(base_depth));