/* Compressed textured reads use a tagged pointer to the metadata */
- rsrc->bo->gpu[0] = rsrc->bo->afbc_slab.gpu | (ds ? 0 : 1);
- rsrc->bo->cpu[0] = rsrc->bo->afbc_slab.cpu;
+ rsrc->bo->gpu = rsrc->bo->afbc_slab.gpu | (ds ? 0 : 1);
+ rsrc->bo->cpu = rsrc->bo->afbc_slab.cpu;
}
static void
* rsrc->gpu. However, attribute buffers must be 64 aligned. If
* it is not, for now we have to duplicate the buffer. */
- mali_ptr effective_address = (rsrc->bo->gpu[0] + buf->buffer_offset);
+ mali_ptr effective_address = (rsrc->bo->gpu + buf->buffer_offset);
if (effective_address & 0x3F) {
- attrs[i].elements = panfrost_upload_transient(ctx, rsrc->bo->cpu[0] + buf->buffer_offset, attrs[i].size) | 1;
+ attrs[i].elements = panfrost_upload_transient(ctx, rsrc->bo->cpu + buf->buffer_offset, attrs[i].size) | 1;
} else {
attrs[i].elements = effective_address | 1;
}
struct panfrost_resource *rsrc = (struct panfrost_resource *) tex_rsrc;
/* Inject the address in. */
- for (int l = 0; l < (tex_rsrc->last_level + 1); ++l)
- ctx->sampler_views[t][i]->hw.swizzled_bitmaps[l] = rsrc->bo->gpu[l];
-
- /* Workaround maybe-errata (?) with non-mipmaps */
- int s = ctx->sampler_views[t][i]->hw.nr_mipmap_levels;
-
- if (!rsrc->bo->is_mipmap) {
- if (ctx->is_t6xx) {
- /* HW ERRATA, not needed after t6XX */
- ctx->sampler_views[t][i]->hw.swizzled_bitmaps[1] = rsrc->bo->gpu[0];
-
- ctx->sampler_views[t][i]->hw.unknown3A = 1;
- }
-
- ctx->sampler_views[t][i]->hw.nr_mipmap_levels = 0;
+ for (int l = 0; l <= tex_rsrc->last_level; ++l) {
+ ctx->sampler_views[t][i]->hw.swizzled_bitmaps[l] =
+ rsrc->bo->gpu + rsrc->bo->slices[l].offset;
}
trampolines[i] = panfrost_upload_transient(ctx, &ctx->sampler_views[t][i]->hw, sizeof(struct mali_texture_descriptor));
-
- /* Restore */
- ctx->sampler_views[t][i]->hw.nr_mipmap_levels = s;
-
- if (ctx->is_t6xx) {
- ctx->sampler_views[t][i]->hw.unknown3A = 0;
- }
}
mali_ptr trampoline = panfrost_upload_transient(ctx, trampolines, sizeof(uint64_t) * ctx->sampler_view_count[t]);
return (const uint8_t *) info->index.user;
} else {
struct panfrost_resource *rsrc = (struct panfrost_resource *) (info->index.resource);
- return (const uint8_t *) rsrc->bo->cpu[0];
+ return (const uint8_t *) rsrc->bo->cpu;
}
}
if (!info->has_user_indices) {
/* Only resources can be directly mapped */
- return rsrc->bo->gpu[0] + offset;
+ return rsrc->bo->gpu + offset;
} else {
/* Otherwise, we need to upload to transient memory */
const uint8_t *ibuf8 = panfrost_get_index_buffer_raw(info);
cso->border_color.f[2],
cso->border_color.f[3]
},
- .min_lod = FIXED_16(0.0),
- .max_lod = FIXED_16(31.0),
+ .min_lod = FIXED_16(cso->min_lod),
+ .max_lod = FIXED_16(cso->max_lod),
.unknown2 = 1,
};
struct panfrost_resource *rsrc = (struct panfrost_resource *) (buf->buffer);
if (rsrc) {
- cpu = rsrc->bo->cpu[0];
+ cpu = rsrc->bo->cpu;
} else if (buf->user_buffer) {
cpu = buf->user_buffer;
} else {
/* TODO: Other base levels require adjusting dimensions / level numbers / etc */
assert (template->u.tex.first_level == 0);
- texture_descriptor.nr_mipmap_levels = template->u.tex.last_level - template->u.tex.first_level;
+ /* Disable mipmapping for now to avoid regressions while automipmapping
+ * is being implemented. TODO: Remove me once automipmaps work */
+
+ //texture_descriptor.nr_mipmap_levels = template->u.tex.last_level - template->u.tex.first_level;
+ texture_descriptor.nr_mipmap_levels = 0;
so->hw = texture_descriptor;
assert(!ret);
bo->gem_handle = gem_handle;
- bo->gpu[0] = (mali_ptr) get_bo_offset.offset;
+ bo->gpu = (mali_ptr) get_bo_offset.offset;
// TODO map and unmap on demand?
mmap_bo.handle = gem_handle;
assert(0);
}
- bo->size[0] = lseek(whandle->handle, 0, SEEK_END);
- assert(bo->size[0] > 0);
- bo->cpu[0] = mmap(NULL, bo->size[0], PROT_READ | PROT_WRITE, MAP_SHARED,
+ bo->size = lseek(whandle->handle, 0, SEEK_END);
+ assert(bo->size > 0);
+ bo->cpu = mmap(NULL, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
drm->fd, mmap_bo.offset);
- if (bo->cpu[0] == MAP_FAILED) {
- fprintf(stderr, "mmap failed: %p\n", bo->cpu[0]);
+ if (bo->cpu == MAP_FAILED) {
+ fprintf(stderr, "mmap failed: %p\n", bo->cpu);
assert(0);
}
/* Record the mmap if we're tracing */
- pantrace_mmap(bo->gpu[0], bo->cpu[0], bo->size[0], NULL);
+ pantrace_mmap(bo->gpu, bo->cpu, bo->size, NULL);
return bo;
}
}
bo->gem_handle = -1;
- bo->gpu[0] = (mali_ptr)NULL;
+ bo->gpu = (mali_ptr)NULL;
}
static int
bool flip_y)
{
struct panfrost_resource *rsrc = pan_resource(surf->texture);
- int stride = rsrc->bo->stride;
+ int stride = rsrc->bo->slices[0].stride;
rt->format = panfrost_mfbd_format(surf);
/* Now, we set the layout specific pieces */
if (rsrc->bo->layout == PAN_LINEAR) {
- mali_ptr framebuffer = rsrc->bo->gpu[0];
+ mali_ptr framebuffer = rsrc->bo->gpu;
if (flip_y) {
framebuffer += stride * (surf->texture->height0 - 1);
fb->unk3 |= MALI_MFBD_EXTRA;
fbx->flags |= MALI_EXTRA_PRESENT | MALI_EXTRA_ZS | 0x1;
- fbx->ds_linear.depth = rsrc->bo->gpu[0];
- fbx->ds_linear.depth_stride = rsrc->bo->stride;
+ fbx->ds_linear.depth = rsrc->bo->gpu;
+ fbx->ds_linear.depth_stride = rsrc->bo->slices[0].stride;
} else {
assert(0);
}
fb.unk3 |= MALI_MFBD_EXTRA;
fbx.flags |= MALI_EXTRA_PRESENT;
fbx.checksum_stride = rsrc->bo->checksum_stride;
- fbx.checksum = rsrc->bo->gpu[0] + rsrc->bo->stride * rsrc->base.height0;
+ fbx.checksum = rsrc->bo->gpu + rsrc->bo->slices[0].stride * rsrc->base.height0;
}
}
prsc->screen = pscreen;
rsc->bo = screen->driver->import_bo(screen, whandle);
- rsc->bo->stride = whandle->stride;
+ rsc->bo->slices[0].stride = whandle->stride;
if (screen->ro) {
rsc->scanout =
return TRUE;
handle->handle = rsrc->bo->gem_handle;
- handle->stride = rsrc->bo->stride;
+ handle->stride = rsrc->bo->slices[0].stride;
return TRUE;
} else if (handle->type == WINSYS_HANDLE_TYPE_FD) {
if (scanout) {
return TRUE;
} else
- return screen->driver->export_bo(screen, rsrc->bo->gem_handle, rsrc->bo->stride, handle);
+ return screen->driver->export_bo(screen, rsrc->bo->gem_handle, rsrc->bo->slices[0].stride, handle);
}
return FALSE;
panfrost_blit(struct pipe_context *pipe,
const struct pipe_blit_info *info)
{
- /* STUB */
- DBG("Skipping blit XXX\n");
+ if (util_try_blit_via_copy_region(pipe, info))
+ return;
+
+ /* TODO */
+ DBG("Unhandled blit.\n");
+
return;
}
free(surf);
}
-static struct panfrost_bo *
-panfrost_create_bo(struct panfrost_screen *screen, const struct pipe_resource *template)
+static void
+panfrost_setup_slices(const struct pipe_resource *tmpl, struct panfrost_bo *bo)
{
- struct panfrost_bo *bo = CALLOC_STRUCT(panfrost_bo);
+ unsigned width = tmpl->width0;
+ unsigned height = tmpl->height0;
+ unsigned bytes_per_pixel = util_format_get_blocksize(tmpl->format);
- /* Calculate the size of the bo */
+ unsigned offset = 0;
- int bytes_per_pixel = util_format_get_blocksize(template->format);
- int stride = ALIGN(template->width0, 16) * bytes_per_pixel;
- size_t sz = stride;
+ for (unsigned l = 0; l <= tmpl->last_level; ++l) {
+ struct panfrost_slice *slice = &bo->slices[l];
- if (template->height0) sz *= template->height0;
- if (template->depth0) sz *= template->depth0;
+ unsigned effective_width = width;
+ unsigned effective_height = height;
- /* Depth buffers require extra space for unknown reasons */
+ /* Tiled operates blockwise; linear is packed */
- if (template->bind & PIPE_BIND_DEPTH_STENCIL)
- sz = sz + sz/256;
+ if (bo->layout == PAN_TILED) {
+ effective_width = ALIGN(effective_width, 16);
+ effective_height = ALIGN(effective_height, 16);
+ }
+
+ slice->offset = offset;
+ slice->stride = bytes_per_pixel * effective_width;
+
+ offset += slice->stride * effective_height;
+
+ width = u_minify(width, 1);
+ height = u_minify(height, 1);
+ }
+
+ bo->size = ALIGN(offset, 4096);
+}
+
+static struct panfrost_bo *
+panfrost_create_bo(struct panfrost_screen *screen, const struct pipe_resource *template)
+{
+ struct panfrost_bo *bo = CALLOC_STRUCT(panfrost_bo);
/* Based on the usage, figure out what storing will be used. There are
* various tradeoffs:
/* Set the layout appropriately */
bo->layout = should_tile ? PAN_TILED : PAN_LINEAR;
- if (bo->layout == PAN_TILED) {
- /* For tiled, we don't map directly, so just malloc any old buffer */
-
- for (int l = 0; l < (template->last_level + 1); ++l) {
- bo->cpu[l] = malloc(sz);
- bo->size[l] = sz;
- }
- } else {
- /* For a linear resource, allocate a block of memory from
- * kernel space */
+ panfrost_setup_slices(template, bo);
+ if (bo->layout == PAN_TILED || bo->layout == PAN_LINEAR) {
struct panfrost_memory mem;
- bo->size[0] = ALIGN(sz, 4096);
- screen->driver->allocate_slab(screen, &mem, bo->size[0] / 4096, true, 0, 0, 0);
+ screen->driver->allocate_slab(screen, &mem, bo->size / 4096, true, 0, 0, 0);
- bo->cpu[0] = mem.cpu;
- bo->gpu[0] = mem.gpu;
+ bo->cpu = mem.cpu;
+ bo->gpu = mem.gpu;
bo->gem_handle = mem.gem_handle;
-
- /* TODO: Mipmap */
}
- bo->stride = stride;
-
return bo;
}
{
struct panfrost_bo *bo = (struct panfrost_bo *)pbo;
- if (bo->layout == PAN_LINEAR && !bo->imported) {
- /* Construct a memory object for all mip levels */
-
+ if ((bo->layout == PAN_LINEAR || bo->layout == PAN_TILED) &&
+ !bo->imported) {
struct panfrost_memory mem = {
- .cpu = bo->cpu[0],
- .gpu = bo->gpu[0],
- .size = bo->size[0],
+ .cpu = bo->cpu,
+ .gpu = bo->gpu,
+ .size = bo->size,
.gem_handle = bo->gem_handle,
};
screen->driver->free_slab(screen, &mem);
}
- if (bo->layout == PAN_TILED) {
- /* Tiled has a malloc'd CPU, so just plain ol' free needed */
-
- for (int l = 0; l < MAX_MIP_LEVELS; ++l) {
- free(bo->cpu[l]);
- }
- }
-
if (bo->layout == PAN_AFBC) {
/* TODO */
DBG("--leaking afbc (%d bytes)--\n", bo->afbc_metadata_size);
FREE(rsrc);
}
-static uint8_t *
-panfrost_map_bo(struct panfrost_context *ctx, struct pipe_transfer *transfer)
-{
- struct panfrost_bo *bo = (struct panfrost_bo *)pan_resource(transfer->resource)->bo;
-
- /* If non-zero level, it's a mipmapped resource and needs to be treated as such */
- bo->is_mipmap |= transfer->level;
-
- if (transfer->usage & PIPE_TRANSFER_MAP_DIRECTLY && bo->layout != PAN_LINEAR) {
- /* We can only directly map linear resources */
- return NULL;
- }
-
- if (transfer->resource->bind & PIPE_BIND_DEPTH_STENCIL) {
- /* Mipmapped readpixels?! */
- assert(transfer->level == 0);
-
- /* Set the CPU mapping to that of the depth/stencil buffer in memory, untiled */
- bo->cpu[transfer->level] = ctx->depth_stencil_buffer.cpu;
- }
-
- return bo->cpu[transfer->level];
-}
-
static void *
panfrost_transfer_map(struct pipe_context *pctx,
struct pipe_resource *resource,
const struct pipe_box *box,
struct pipe_transfer **out_transfer)
{
- struct panfrost_context *ctx = pan_context(pctx);
int bytes_per_pixel = util_format_get_blocksize(resource->format);
struct panfrost_bo *bo = pan_resource(resource)->bo;
- uint8_t *cpu;
- struct pipe_transfer *transfer = CALLOC_STRUCT(pipe_transfer);
- transfer->level = level;
- transfer->usage = usage;
- transfer->box = *box;
- transfer->stride = bo->stride;
- assert(!transfer->box.z);
+ struct panfrost_gtransfer *transfer = CALLOC_STRUCT(panfrost_gtransfer);
+ transfer->base.level = level;
+ transfer->base.usage = usage;
+ transfer->base.box = *box;
+ transfer->base.stride = bo->slices[level].stride;
+ transfer->base.layer_stride = bytes_per_pixel * resource->width0; /* TODO: Cubemaps */
+ assert(!transfer->base.box.z);
- pipe_resource_reference(&transfer->resource, resource);
+ pipe_resource_reference(&transfer->base.resource, resource);
- *out_transfer = transfer;
+ *out_transfer = &transfer->base;
if (resource->bind & PIPE_BIND_DISPLAY_TARGET ||
resource->bind & PIPE_BIND_SCANOUT ||
panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
}
- cpu = panfrost_map_bo(ctx, transfer);
- if (cpu == NULL)
- return NULL;
+ if (bo->layout != PAN_LINEAR) {
+ /* Non-linear resources need to be indirectly mapped */
- return cpu + transfer->box.x * bytes_per_pixel + transfer->box.y * bo->stride;
+ if (usage & PIPE_TRANSFER_MAP_DIRECTLY)
+ return NULL;
+
+ /* TODO: Reads */
+ transfer->map = malloc(ALIGN(box->width, 16) * ALIGN(box->height, 16) * bytes_per_pixel);
+
+ return transfer->map;
+ } else {
+ return bo->cpu
+ + bo->slices[level].offset
+ + transfer->base.box.y * bo->slices[level].stride
+ + transfer->base.box.x * bytes_per_pixel;
+ }
}
static void
-panfrost_tile_texture(struct panfrost_screen *screen, struct panfrost_resource *rsrc, int level)
+panfrost_tile_texture(struct panfrost_screen *screen, struct panfrost_resource *rsrc, struct panfrost_gtransfer *trans)
{
struct panfrost_bo *bo = (struct panfrost_bo *)rsrc->bo;
- int bytes_per_pixel = util_format_get_blocksize(rsrc->base.format);
-
- int width = rsrc->base.width0 >> level;
- int height = rsrc->base.height0 >> level;
-
- /* Estimate swizzled bitmap size. Slight overestimates are fine.
- * Underestimates will result in memory corruption or worse. */
- int swizzled_sz = panfrost_swizzled_size(width, height, bytes_per_pixel);
+ unsigned level = trans->base.level;
- /* Save the entry. But if there was already an entry here (from a
- * previous upload of the resource), free that one so we don't leak */
+ assert(!trans->base.box.z);
- if (bo->entry[level] != NULL) {
- bo->entry[level]->freed = true;
- pb_slab_free(&screen->slabs, &bo->entry[level]->base);
- }
-
- /* Allocate the transfer given that known size but do not copy */
- struct pb_slab_entry *entry = pb_slab_alloc(&screen->slabs, swizzled_sz, HEAP_TEXTURE);
- struct panfrost_memory_entry *p_entry = (struct panfrost_memory_entry *) entry;
- struct panfrost_memory *backing = (struct panfrost_memory *) entry->slab;
- uint8_t *swizzled = backing->cpu + p_entry->offset;
-
- bo->entry[level] = p_entry;
- bo->gpu[level] = backing->gpu + p_entry->offset;
-
- /* Run actual texture swizzle, writing directly to the mapped
- * GPU chunk we allocated */
-
- panfrost_texture_swizzle(width, height, bytes_per_pixel, bo->stride, bo->cpu[level], swizzled);
+ panfrost_texture_swizzle(
+ trans->base.box.x,
+ trans->base.box.y,
+ trans->base.box.width,
+ trans->base.box.height,
+ util_format_get_blocksize(rsrc->base.format),
+ bo->slices[level].stride,
+ trans->map,
+ bo->cpu + bo->slices[level].offset);
}
static void
panfrost_unmap_bo(struct panfrost_context *ctx,
struct pipe_transfer *transfer)
{
+ struct panfrost_gtransfer *trans = pan_transfer(transfer);
struct panfrost_bo *bo = (struct panfrost_bo *)pan_resource(transfer->resource)->bo;
if (transfer->usage & PIPE_TRANSFER_WRITE) {
} else if (bo->layout == PAN_TILED) {
struct pipe_context *gallium = (struct pipe_context *) ctx;
struct panfrost_screen *screen = pan_screen(gallium->screen);
- panfrost_tile_texture(screen, prsrc, transfer->level);
+ panfrost_tile_texture(screen, prsrc, trans);
}
}
}
+
+ free(trans->map);
}
static void
pctx->surface_destroy = panfrost_surface_destroy;
pctx->resource_copy_region = util_resource_copy_region;
pctx->blit = panfrost_blit;
- //pctx->generate_mipmap = panfrost_generate_mipmap;
pctx->flush_resource = panfrost_flush_resource;
pctx->invalidate_resource = panfrost_invalidate_resource;
pctx->transfer_flush_region = u_transfer_helper_transfer_flush_region;
PAN_AFBC
};
-struct panfrost_bo {
- /* Address to the BO in question */
+struct panfrost_slice {
+ unsigned offset;
+ unsigned stride;
+};
- uint8_t *cpu[MAX_MIP_LEVELS];
+struct panfrost_bo {
+ struct panfrost_slice slices[MAX_MIP_LEVELS];
- /* Not necessarily a GPU mapping of cpu! In case of texture tiling, gpu
- * points to the GPU-side, tiled texture, while cpu points to the
- * CPU-side, untiled texture from mesa */
+ /* Mapping for the entire object (all levels) */
+ uint8_t *cpu;
- mali_ptr gpu[MAX_MIP_LEVELS];
+ /* GPU address for the object */
+ mali_ptr gpu;
- /* Memory entry corresponding to gpu above */
- struct panfrost_memory_entry *entry[MAX_MIP_LEVELS];
+ /* Size of the entire tree */
+ size_t size;
/* Set if this bo was imported rather than allocated */
bool imported;
- /* Number of bytes of allocation */
- size_t size[MAX_MIP_LEVELS];
-
/* Internal layout (tiled?) */
enum panfrost_memory_layout layout;
- /* Is something other than level 0 ever written? */
- bool is_mipmap;
-
/* If AFBC is enabled for this resource, we lug around an AFBC
* metadata buffer as well. The actual AFBC resource is also in
* afbc_slab (only defined for AFBC) at position afbc_main_offset
int checksum_stride;
int gem_handle;
- unsigned int stride;
};
struct panfrost_resource {
return (struct panfrost_resource *)p;
}
+struct panfrost_gtransfer {
+ struct pipe_transfer base;
+ void *map;
+};
+
+static inline struct panfrost_gtransfer *
+pan_transfer(struct pipe_transfer *p)
+{
+ return (struct panfrost_gtransfer *)p;
+}
+
void panfrost_resource_screen_init(struct panfrost_screen *screen);
void panfrost_resource_context_init(struct pipe_context *pctx);
{
struct panfrost_resource *rsrc = pan_resource(surf->texture);
- signed stride = rsrc->bo->stride;
+ signed stride = rsrc->bo->slices[0].stride;
fb->format = panfrost_sfbd_format(surf);
if (rsrc->bo->layout == PAN_LINEAR) {
- mali_ptr framebuffer = rsrc->bo->gpu[0];
+ mali_ptr framebuffer = rsrc->bo->gpu;
/* The default is upside down from OpenGL's perspective. */
if (flip_y) {
}
void
-panfrost_texture_swizzle(int width, int height, int bytes_per_pixel, int source_stride,
+panfrost_texture_swizzle(unsigned off_x,
+ unsigned off_y,
+ int width, int height, int bytes_per_pixel, int source_stride,
const uint8_t *pixels,
uint8_t *ldest)
{
int block_pitch = ALIGN(width, 16) >> 4;
/* Use fast path if available */
- if (bytes_per_pixel == 4 /* && (ALIGN(width, 16) == width) */) {
- swizzle_bpp4_align16(width, height, source_stride >> 2, (block_pitch * 256 >> 4), (const uint32_t *) pixels, (uint32_t *) ldest);
- return;
- } else if (bytes_per_pixel == 1 /* && (ALIGN(width, 16) == width) */) {
- swizzle_bpp1_align16(width, height, source_stride, (block_pitch * 256 >> 4), pixels, (uint8_t *) ldest);
- return;
+ if (!(off_x || off_y)) {
+ if (bytes_per_pixel == 4 /* && (ALIGN(width, 16) == width) */) {
+ swizzle_bpp4_align16(width, height, source_stride >> 2, (block_pitch * 256 >> 4), (const uint32_t *) pixels, (uint32_t *) ldest);
+ return;
+ } else if (bytes_per_pixel == 1 /* && (ALIGN(width, 16) == width) */) {
+ swizzle_bpp1_align16(width, height, source_stride, (block_pitch * 256 >> 4), pixels, (uint8_t *) ldest);
+ return;
+ }
}
/* Otherwise, default back on generic path */
for (int y = 0; y < height; ++y) {
- int block_y = y >> 4;
- int rem_y = y & 0x0F;
+ int block_y = (y + off_y) >> 4;
+ int rem_y = (y + off_y) & 0x0F;
int block_start_s = block_y * block_pitch * 256;
int source_start = y * source_stride;
for (int x = 0; x < width; ++x) {
- int block_x_s = (x >> 4) * 256;
- int rem_x = x & 0x0F;
+ int block_x_s = ((x + off_x) >> 4) * 256;
+ int rem_x = (x + off_x) & 0x0F;
int index = space_filler[rem_y][rem_x];
const uint8_t *source = &pixels[source_start + bytes_per_pixel * x];
}
}
}
-
-
-unsigned
-panfrost_swizzled_size(int width, int height, int bytes_per_pixel)
-{
- /* Calculate maximum size, overestimating a bit */
- int block_pitch = ALIGN(width, 16) >> 4;
- unsigned sz = bytes_per_pixel * 256 * ((height >> 4) + 1) * block_pitch;
-
- return sz;
-}
panfrost_generate_space_filler_indices(void);
void
-panfrost_texture_swizzle(int width, int height, int bytes_per_pixel, int source_stride,
+panfrost_texture_swizzle(unsigned off_x, unsigned off_y,
+ int width, int height, int bytes_per_pixel, int source_stride,
const uint8_t *pixels,
uint8_t *ldest);
-unsigned
-panfrost_swizzled_size(int width, int height, int bytes_per_pixel);
-
#endif
projects / mesa.git / commitdiff