panfrost: Overhaul tilebuffer allocations
[mesa.git] / src / gallium / drivers / panfrost / pan_mfbd.c
index c4063c317eaeb32f130f72583089a46dce5a196d..ac890b5c56f47d57be1ac1bfa24a3134519b2df7 100644 (file)
@@ -74,6 +74,7 @@ panfrost_mfbd_format(struct pipe_surface *surf)
 
         case PIPE_FORMAT_A4B4G4R4_UNORM:
         case PIPE_FORMAT_B4G4R4A4_UNORM:
+        case PIPE_FORMAT_R4G4B4A4_UNORM:
                 fmt.unk1 = 0x10000000;
                 fmt.unk3 = 0x5;
                 fmt.nr_channels = MALI_POSITIVE(1);
@@ -88,6 +89,14 @@ panfrost_mfbd_format(struct pipe_surface *surf)
                 fmt.nr_channels = MALI_POSITIVE(1);
                 break;
 
+        case PIPE_FORMAT_B5G5R5A1_UNORM:
+        case PIPE_FORMAT_R5G5B5A1_UNORM:
+        case PIPE_FORMAT_B5G5R5X1_UNORM:
+                fmt.unk1 = 0x18000000;
+                fmt.unk3 = 0x7;
+                fmt.nr_channels = MALI_POSITIVE(2);
+                break;
+
         /* Generic 8-bit */
         case PIPE_FORMAT_R8_UINT:
         case PIPE_FORMAT_R8_SINT:
@@ -118,7 +127,6 @@ panfrost_mfbd_format(struct pipe_surface *surf)
         case PIPE_FORMAT_R16_FLOAT:
         case PIPE_FORMAT_R16_UINT:
         case PIPE_FORMAT_R16_SINT:
-        case PIPE_FORMAT_B5G5R5A1_UNORM:
                 fmt.unk1 = 0x84000000;
                 fmt.unk3 = 0x0;
                 fmt.nr_channels = MALI_POSITIVE(2);
@@ -161,6 +169,10 @@ panfrost_mfbd_clear(
         struct mali_render_target *rts,
         unsigned rt_count)
 {
+        struct panfrost_context *ctx = batch->ctx;
+        struct pipe_context *gallium = (struct pipe_context *) ctx;
+        struct panfrost_device *dev = pan_device(gallium->screen);
+
         for (unsigned i = 0; i < rt_count; ++i) {
                 if (!(batch->clear & (PIPE_CLEAR_COLOR0 << i)))
                         continue;
@@ -178,6 +190,11 @@ panfrost_mfbd_clear(
         if (batch->clear & PIPE_CLEAR_STENCIL) {
                 fb->clear_stencil = batch->clear_stencil;
         }
+
+        if (dev->quirks & IS_BIFROST) {
+                fbx->clear_color_1 = batch->clear_color[0][0];
+                fbx->clear_color_2 = 0xc0000000 | (fbx->clear_color_1 & 0xffff); /* WTF? */
+        }
 }
 
 static void
@@ -186,35 +203,68 @@ panfrost_mfbd_set_cbuf(
         struct pipe_surface *surf)
 {
         struct panfrost_resource *rsrc = pan_resource(surf->texture);
+        struct panfrost_device *dev = pan_device(surf->context->screen);
+        bool is_bifrost = dev->quirks & IS_BIFROST;
 
         unsigned level = surf->u.tex.level;
         unsigned first_layer = surf->u.tex.first_layer;
         assert(surf->u.tex.last_layer == first_layer);
         int stride = rsrc->slices[level].stride;
 
-        mali_ptr base = panfrost_get_texture_address(rsrc, level, first_layer);
+        /* Only set layer_stride for MSAA rendering */
+
+        unsigned nr_samples = surf->nr_samples;
+
+        if (!nr_samples)
+                nr_samples = surf->texture->nr_samples;
+
+        unsigned layer_stride = (nr_samples > 1) ? rsrc->slices[level].size0 : 0;
+
+        mali_ptr base = panfrost_get_texture_address(rsrc, level, first_layer, 0);
 
         rt->format = panfrost_mfbd_format(surf);
 
+        if (layer_stride)
+                rt->format.flags |= MALI_MFBD_FORMAT_MSAA | MALI_MFBD_FORMAT_LAYERED;
+
         /* Now, we set the layout specific pieces */
 
         if (rsrc->layout == MALI_TEXTURE_LINEAR) {
-                rt->format.block = MALI_BLOCK_LINEAR;
+                if (is_bifrost) {
+                        rt->format.unk4 = 0x1;
+                } else {
+                        rt->format.block = MALI_BLOCK_LINEAR;
+                }
+
                 rt->framebuffer = base;
                 rt->framebuffer_stride = stride / 16;
+                rt->layer_stride = layer_stride;
         } else if (rsrc->layout == MALI_TEXTURE_TILED) {
-                rt->format.block = MALI_BLOCK_TILED;
+                if (is_bifrost) {
+                        rt->format.unk3 |= 0x8;
+                } else {
+                        rt->format.block = MALI_BLOCK_TILED;
+                }
+
                 rt->framebuffer = base;
                 rt->framebuffer_stride = stride;
+                rt->layer_stride = layer_stride;
         } else if (rsrc->layout == MALI_TEXTURE_AFBC) {
                 rt->format.block = MALI_BLOCK_AFBC;
 
                 unsigned header_size = rsrc->slices[level].header_size;
 
                 rt->framebuffer = base + header_size;
+                rt->layer_stride = layer_stride;
                 rt->afbc.metadata = base;
                 rt->afbc.stride = 0;
-                rt->afbc.unk = 0x30009;
+                rt->afbc.flags = MALI_AFBC_FLAGS;
+
+                unsigned components = util_format_get_nr_components(surf->format);
+
+                /* The "lossless colorspace transform" is lossy for R and RG formats */
+                if (components >= 3)
+                   rt->afbc.flags |= MALI_AFBC_YTR;
 
                 /* TODO: The blob sets this to something nonzero, but it's not
                  * clear what/how to calculate/if it matters */
@@ -231,22 +281,33 @@ panfrost_mfbd_set_zsbuf(
         struct mali_framebuffer_extra *fbx,
         struct pipe_surface *surf)
 {
+        struct panfrost_device *dev = pan_device(surf->context->screen);
+        bool is_bifrost = dev->quirks & IS_BIFROST;
         struct panfrost_resource *rsrc = pan_resource(surf->texture);
 
+        unsigned nr_samples = surf->nr_samples;
+
+        if (!nr_samples)
+                nr_samples = surf->texture->nr_samples;
+
+        nr_samples = MAX2(nr_samples, 1);
+
+        fbx->zs_samples = MALI_POSITIVE(nr_samples);
+
         unsigned level = surf->u.tex.level;
         unsigned first_layer = surf->u.tex.first_layer;
         assert(surf->u.tex.last_layer == first_layer);
 
-        mali_ptr base = panfrost_get_texture_address(rsrc, level, first_layer);
+        mali_ptr base = panfrost_get_texture_address(rsrc, level, first_layer, 0);
 
         if (rsrc->layout == MALI_TEXTURE_AFBC) {
                 /* The only Z/S format we can compress is Z24S8 or variants
-                 * thereof (handled by the state tracker) */
+                 * thereof (handled by the gallium frontend) */
                 assert(panfrost_is_z24s8_variant(surf->format));
 
                 unsigned header_size = rsrc->slices[level].header_size;
 
-                fb->mfbd_flags |= MALI_MFBD_EXTRA;
+                fb->mfbd_flags |= MALI_MFBD_EXTRA | MALI_MFBD_DEPTH_WRITE;
 
                 fbx->flags_hi |= MALI_EXTRA_PRESENT;
                 fbx->flags_lo |= MALI_EXTRA_ZS | 0x1; /* unknown */
@@ -256,14 +317,16 @@ panfrost_mfbd_set_zsbuf(
                 fbx->ds_afbc.depth_stencil_afbc_metadata = base;
                 fbx->ds_afbc.depth_stencil_afbc_stride = 0;
 
-                fbx->ds_afbc.zero1 = 0x10009;
+                fbx->ds_afbc.flags = MALI_AFBC_FLAGS;
                 fbx->ds_afbc.padding = 0x1000;
         } else if (rsrc->layout == MALI_TEXTURE_LINEAR || rsrc->layout == MALI_TEXTURE_TILED) {
                 /* TODO: Z32F(S8) support, which is always linear */
 
                 int stride = rsrc->slices[level].stride;
 
-                fb->mfbd_flags |= MALI_MFBD_EXTRA;
+                unsigned layer_stride = (nr_samples > 1) ? rsrc->slices[level].size0 : 0;
+
+                fb->mfbd_flags |= MALI_MFBD_EXTRA | MALI_MFBD_DEPTH_WRITE;
                 fbx->flags_hi |= MALI_EXTRA_PRESENT;
                 fbx->flags_lo |= MALI_EXTRA_ZS;
 
@@ -272,30 +335,39 @@ panfrost_mfbd_set_zsbuf(
                 if (rsrc->layout == MALI_TEXTURE_LINEAR) {
                         fbx->zs_block = MALI_BLOCK_LINEAR;
                         fbx->ds_linear.depth_stride = stride / 16;
+                        fbx->ds_linear.depth_layer_stride = layer_stride;
                 } else {
-                        fbx->zs_block = MALI_BLOCK_TILED;
+                        if (is_bifrost) {
+                                fbx->zs_block = MALI_BLOCK_UNKNOWN;
+                                fbx->flags_hi |= 0x440;
+                                fbx->flags_lo |= 0x1;
+                        } else {
+                                fbx->zs_block = MALI_BLOCK_TILED;
+                        }
+
                         fbx->ds_linear.depth_stride = stride;
+                        fbx->ds_linear.depth_layer_stride = layer_stride;
                 }
 
                 if (panfrost_is_z24s8_variant(surf->format)) {
                         fbx->flags_lo |= 0x1;
-                } else if (surf->format == PIPE_FORMAT_Z32_UNORM) {
-                        /* default flags (0 in bottom place) */
                 } else if (surf->format == PIPE_FORMAT_Z32_FLOAT) {
                         fbx->flags_lo |= 0xA;
                         fb->mfbd_flags ^= 0x100;
                         fb->mfbd_flags |= 0x200;
                 } else if (surf->format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT) {
-                        fbx->flags_hi |= 0x400;
+                        fbx->flags_hi |= 0x40;
                         fbx->flags_lo |= 0xA;
                         fb->mfbd_flags ^= 0x100;
                         fb->mfbd_flags |= 0x201;
 
                         struct panfrost_resource *stencil = rsrc->separate_stencil;
                         struct panfrost_slice stencil_slice = stencil->slices[level];
+                        unsigned stencil_layer_stride = (nr_samples > 1) ? stencil_slice.size0 : 0;
 
-                        fbx->ds_linear.stencil = panfrost_get_texture_address(stencil, level, first_layer);
+                        fbx->ds_linear.stencil = panfrost_get_texture_address(stencil, level, first_layer, 0);
                         fbx->ds_linear.stencil_stride = stencil_slice.stride;
+                        fbx->ds_linear.stencil_layer_stride = stencil_layer_stride;
                 }
 
         } else {
@@ -332,7 +404,7 @@ panfrost_mfbd_upload(struct panfrost_batch *batch,
                 sizeof(struct mali_render_target) * 4;
 
         struct panfrost_transfer m_f_trans =
-                panfrost_allocate_transient(batch, total_sz);
+                panfrost_pool_alloc(&batch->pool, total_sz);
 
         /* Do the transfer */
 
@@ -356,6 +428,41 @@ panfrost_mfbd_upload(struct panfrost_batch *batch,
 
 #undef UPLOAD
 
+/* Determines the # of bytes per pixel we need to reserve for a given format in
+ * the tilebuffer (compared to 128-bit budget, etc). Usually the same as the
+ * bytes per pixel of the format itself, but there are some special cases I
+ * don't understand. */
+
+static unsigned
+pan_bytes_per_pixel_tib(enum pipe_format format)
+{
+        const struct util_format_description *desc =
+                util_format_description(format);
+
+        if (util_format_is_unorm8(desc) || format == PIPE_FORMAT_B5G6R5_UNORM)
+                return 4;
+
+        return desc->block.bits / 8;
+}
+
+/* Determines whether a framebuffer uses too much tilebuffer space (requiring
+ * us to scale up the tile at a performance penalty). This is conservative but
+ * afaict you get 128-bits per pixel normally */
+
+static bool
+pan_is_large_tib(struct panfrost_batch *batch)
+{
+        unsigned size = 0;
+
+        for (int cb = 0; cb < batch->key.nr_cbufs; ++cb) {
+                struct pipe_surface *surf = batch->key.cbufs[cb];
+                assert(surf);
+                size += pan_bytes_per_pixel_tib(surf->format);
+        }
+
+        return (size > 16);
+}
+
 static struct mali_framebuffer
 panfrost_emit_mfbd(struct panfrost_batch *batch, unsigned vertex_count)
 {
@@ -372,7 +479,8 @@ panfrost_emit_mfbd(struct panfrost_batch *batch, unsigned vertex_count)
                 .width2 = MALI_POSITIVE(width),
                 .height2 = MALI_POSITIVE(height),
 
-                .unk1 = 0x1080,
+                /* Seems to configure tib size */
+                .unk1 = pan_is_large_tib(batch) ? 0xc80 : 0x1080,
 
                 .rt_count_1 = MALI_POSITIVE(batch->key.nr_cbufs),
                 .rt_count_2 = 4,
@@ -411,6 +519,9 @@ panfrost_attach_mfbd(struct panfrost_batch *batch, unsigned vertex_count)
 mali_ptr
 panfrost_mfbd_fragment(struct panfrost_batch *batch, bool has_draws)
 {
+        struct panfrost_device *dev = pan_device(batch->ctx->base.screen);
+        bool is_bifrost = dev->quirks & IS_BIFROST;
+
         struct mali_framebuffer fb = panfrost_emit_mfbd(batch, has_draws);
         struct mali_framebuffer_extra fbx = {0};
         struct mali_render_target rts[4] = {0};
@@ -420,49 +531,60 @@ panfrost_mfbd_fragment(struct panfrost_batch *batch, bool has_draws)
         unsigned rt_descriptors = MAX2(batch->key.nr_cbufs, 1);
 
         fb.rt_count_1 = MALI_POSITIVE(rt_descriptors);
-        fb.rt_count_2 = rt_descriptors;
         fb.mfbd_flags = 0x100;
 
-        /* TODO: MRT clear */
-        panfrost_mfbd_clear(batch, &fb, &fbx, rts, fb.rt_count_2);
-
+        panfrost_mfbd_clear(batch, &fb, &fbx, rts, rt_descriptors);
 
         /* Upload either the render target or a dummy GL_NONE target */
 
+        unsigned offset = 0;
+        bool is_large = pan_is_large_tib(batch);
+
         for (int cb = 0; cb < rt_descriptors; ++cb) {
                 struct pipe_surface *surf = batch->key.cbufs[cb];
+                unsigned rt_offset = offset * 0x100;
 
-                if (surf) {
-                        panfrost_mfbd_set_cbuf(&rts[cb], surf);
+                if (surf && ((batch->clear | batch->draws) & (PIPE_CLEAR_COLOR0 << cb))) {
+                        unsigned nr_samples = surf->nr_samples;
+
+                        if (!nr_samples)
+                                nr_samples = surf->texture->nr_samples;
+
+                        if (nr_samples > 1)
+                                batch->requirements |= PAN_REQ_MSAA;
 
-                        /* What is this? Looks like some extension of the bpp
-                         * field. Maybe it establishes how much internal
-                         * tilebuffer space is reserved? */
+                        panfrost_mfbd_set_cbuf(&rts[cb], surf);
 
-                        unsigned bpp = util_format_get_blocksize(surf->format);
-                        fb.rt_count_2 = MAX2(fb.rt_count_2, ALIGN_POT(bpp, 4) / 4);
+                        offset += pan_bytes_per_pixel_tib(surf->format);
                 } else {
                         struct mali_rt_format null_rt = {
                                 .unk1 = 0x4000000,
                                 .no_preload = true
                         };
 
+                        if (is_bifrost) {
+                                null_rt.flags = 0x8;
+                                null_rt.unk3 = 0x8;
+                        }
+
                         rts[cb].format = null_rt;
                         rts[cb].framebuffer = 0;
                         rts[cb].framebuffer_stride = 0;
                 }
 
                 /* TODO: Break out the field */
-                rts[cb].format.unk1 |= (cb * 0x400);
+                rts[cb].format.unk1 |= is_large ? (rt_offset / 4) : rt_offset;
         }
 
-        if (batch->key.zsbuf) {
+        fb.rt_count_2 = MAX2(DIV_ROUND_UP(offset, is_large ? 16 : 4), 1);
+
+        if (batch->key.zsbuf && ((batch->clear | batch->draws) & PIPE_CLEAR_DEPTHSTENCIL)) {
                 panfrost_mfbd_set_zsbuf(&fb, &fbx, batch->key.zsbuf);
         }
 
         /* When scanning out, the depth buffer is immediately invalidated, so
          * we don't need to waste bandwidth writing it out. This can improve
-         * performance substantially (Z32_UNORM 1080p @ 60fps is 475 MB/s of
+         * performance substantially (Z24X8_UNORM 1080p @ 60fps is 475 MB/s of
          * memory bandwidth!).
          *
          * The exception is ReadPixels, but this is not supported on GLES so we
@@ -489,16 +611,18 @@ panfrost_mfbd_fragment(struct panfrost_batch *batch, bool has_draws)
         if (batch->key.nr_cbufs == 1) {
                 struct pipe_surface *surf = batch->key.cbufs[0];
                 struct panfrost_resource *rsrc = pan_resource(surf->texture);
-                struct panfrost_bo *bo = rsrc->bo;
 
                 if (rsrc->checksummed) {
                         unsigned level = surf->u.tex.level;
                         struct panfrost_slice *slice = &rsrc->slices[level];
 
                         fb.mfbd_flags |= MALI_MFBD_EXTRA;
-                        fbx.flags_lo |= MALI_EXTRA_PRESENT;
+                        fbx.flags_hi |= MALI_EXTRA_PRESENT;
                         fbx.checksum_stride = slice->checksum_stride;
-                        fbx.checksum = bo->gpu + slice->checksum_offset;
+                        if (slice->checksum_bo)
+                                fbx.checksum = slice->checksum_bo->gpu;
+                        else
+                                fbx.checksum = rsrc->bo->gpu + slice->checksum_offset;
                 }
         }