radeonsi: add support for compressed texture v2

Most test pass, issue are with border color and swizzle.

Based on ircnick<maelcum> patch.

v2: Restaged commit hunk

Signed-off-by: Jerome Glisse <jglisse@redhat.com>

2 files changed, 76 insertions, 2 deletions

diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index 61ede6453f0..a39843ca356 100644
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -30,6 +30,7 @@
 #include "util/u_helpers.h"
 #include "util/u_math.h"
 #include "util/u_pack_color.h"
+#include "util/u_format_s3tc.h"
 #include "tgsi/tgsi_parse.h"
 #include "radeonsi_pipe.h"
 #include "radeonsi_shader.h"
@@ -1164,6 +1165,8 @@ static uint32_t si_translate_texformat(struct pipe_screen *screen,
                                        const struct util_format_description *desc,
                                        int first_non_void)
 {
+        struct r600_screen *rscreen = (struct r600_screen*)screen;
+        bool enable_s3tc = rscreen->info.drm_minor >= 31;
         boolean uniform = TRUE;
         int i;
 
@@ -1205,7 +1208,51 @@ static uint32_t si_translate_texformat(struct pipe_screen *screen,
                 break;
         }
 
-        /* TODO compressed formats */
+        if (desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
+                if (!enable_s3tc)
+                        goto out_unknown;
+
+                switch (format) {
+                case PIPE_FORMAT_RGTC1_SNORM:
+                case PIPE_FORMAT_LATC1_SNORM:
+                case PIPE_FORMAT_RGTC1_UNORM:
+                case PIPE_FORMAT_LATC1_UNORM:
+                        return V_008F14_IMG_DATA_FORMAT_BC4;
+                case PIPE_FORMAT_RGTC2_SNORM:
+                case PIPE_FORMAT_LATC2_SNORM:
+                case PIPE_FORMAT_RGTC2_UNORM:
+                case PIPE_FORMAT_LATC2_UNORM:
+                        return V_008F14_IMG_DATA_FORMAT_BC5;
+                default:
+                        goto out_unknown;
+                }
+        }
+
+        if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
+
+                if (!enable_s3tc)
+                        goto out_unknown;
+
+                if (!util_format_s3tc_enabled) {
+                        goto out_unknown;
+                }
+
+                switch (format) {
+                case PIPE_FORMAT_DXT1_RGB:
+                case PIPE_FORMAT_DXT1_RGBA:
+                case PIPE_FORMAT_DXT1_SRGB:
+                case PIPE_FORMAT_DXT1_SRGBA:
+                        return V_008F14_IMG_DATA_FORMAT_BC1;
+                case PIPE_FORMAT_DXT3_RGBA:
+                case PIPE_FORMAT_DXT3_SRGBA:
+                        return V_008F14_IMG_DATA_FORMAT_BC2;
+                case PIPE_FORMAT_DXT5_RGBA:
+                case PIPE_FORMAT_DXT5_SRGBA:
+                        return V_008F14_IMG_DATA_FORMAT_BC3;
+                default:
+                        goto out_unknown;
+                }
+        }
 
         if (format == PIPE_FORMAT_R9G9B9E5_FLOAT) {
                 return V_008F14_IMG_DATA_FORMAT_5_9_9_9;
@@ -2109,7 +2156,27 @@ static struct pipe_sampler_view *si_create_sampler_view(struct pipe_context *ctx
                 break;
         default:
                 if (first_non_void < 0) {
-                        num_format = V_008F14_IMG_NUM_FORMAT_FLOAT;
+                        if (util_format_is_compressed(pipe_format)) {
+                                switch (pipe_format) {
+                                case PIPE_FORMAT_DXT1_SRGB:
+                                case PIPE_FORMAT_DXT1_SRGBA:
+                                case PIPE_FORMAT_DXT3_SRGBA:
+                                case PIPE_FORMAT_DXT5_SRGBA:
+                                        num_format = V_008F14_IMG_NUM_FORMAT_SRGB;
+                                        break;
+                                case PIPE_FORMAT_RGTC1_SNORM:
+                                case PIPE_FORMAT_LATC1_SNORM:
+                                case PIPE_FORMAT_RGTC2_SNORM:
+                                case PIPE_FORMAT_LATC2_SNORM:
+                                        num_format = V_008F14_IMG_NUM_FORMAT_SNORM;
+                                        break;
+                                default:
+                                        num_format = V_008F14_IMG_NUM_FORMAT_UNORM;
+                                        break;
+                                }
+                        } else {
+                                num_format = V_008F14_IMG_NUM_FORMAT_FLOAT;
+                        }
                 } else if (desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
                         num_format = V_008F14_IMG_NUM_FORMAT_SRGB;
                 } else {
diff --git a/src/gallium/drivers/radeonsi/sid.h b/src/gallium/drivers/radeonsi/sid.h
index 26b35e6b040..ca161df0502 100644
--- a/src/gallium/drivers/radeonsi/sid.h
+++ b/src/gallium/drivers/radeonsi/sid.h
@@ -3440,6 +3440,13 @@
 #define     V_008F14_IMG_DATA_FORMAT_GB_GR                          0x20
 #define     V_008F14_IMG_DATA_FORMAT_BG_RG                          0x21
 #define     V_008F14_IMG_DATA_FORMAT_5_9_9_9                        0x22
+#define     V_008F14_IMG_DATA_FORMAT_BC1                            0x23
+#define     V_008F14_IMG_DATA_FORMAT_BC2                            0x24
+#define     V_008F14_IMG_DATA_FORMAT_BC3                            0x25
+#define     V_008F14_IMG_DATA_FORMAT_BC4                            0x26
+#define     V_008F14_IMG_DATA_FORMAT_BC5                            0x27
+#define     V_008F14_IMG_DATA_FORMAT_BC6                            0x28
+#define     V_008F14_IMG_DATA_FORMAT_BC7                            0x29
 #define     V_008F14_IMG_DATA_FORMAT_RESERVED_42                    0x2A
 #define     V_008F14_IMG_DATA_FORMAT_RESERVED_43                    0x2B
 #define     V_008F14_IMG_DATA_FORMAT_FMASK8_S2_F1                   0x2C