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path: root/src/gallium/drivers/r300/r300_transfer.c
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Diffstat (limited to 'src/gallium/drivers/r300/r300_transfer.c')
-rw-r--r--src/gallium/drivers/r300/r300_transfer.c210
1 files changed, 187 insertions, 23 deletions
diff --git a/src/gallium/drivers/r300/r300_transfer.c b/src/gallium/drivers/r300/r300_transfer.c
index fa48688db28..56a6976e8b6 100644
--- a/src/gallium/drivers/r300/r300_transfer.c
+++ b/src/gallium/drivers/r300/r300_transfer.c
@@ -29,6 +29,89 @@
#include "util/u_memory.h"
#include "util/u_format.h"
+struct r300_transfer {
+ /* Parent class */
+ struct pipe_transfer transfer;
+
+ /* Pipe context. */
+ struct pipe_context *ctx;
+
+ /* Parameters of get_tex_transfer. */
+ unsigned x, y, level, zslice, face;
+
+ /* Offset from start of buffer. */
+ unsigned offset;
+
+ /* Detiled texture. */
+ struct r300_texture *detiled_texture;
+
+ /* Transfer and format flags. */
+ unsigned buffer_usage, render_target_usage;
+};
+
+/* Convenience cast wrapper. */
+static INLINE struct r300_transfer*
+r300_transfer(struct pipe_transfer* transfer)
+{
+ return (struct r300_transfer*)transfer;
+}
+
+/* Copy from a tiled texture to a detiled one. */
+static void r300_copy_from_tiled_texture(struct pipe_context *ctx,
+ struct r300_transfer *r300transfer)
+{
+ struct pipe_screen *screen = ctx->screen;
+ struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
+ struct pipe_texture *tex = transfer->texture;
+ struct pipe_surface *src, *dst;
+
+ src = screen->get_tex_surface(screen, tex, r300transfer->face,
+ r300transfer->level, r300transfer->zslice,
+ PIPE_BUFFER_USAGE_GPU_READ |
+ PIPE_BUFFER_USAGE_PIXEL);
+
+ dst = screen->get_tex_surface(screen, &r300transfer->detiled_texture->tex,
+ 0, 0, 0,
+ PIPE_BUFFER_USAGE_GPU_WRITE |
+ PIPE_BUFFER_USAGE_PIXEL |
+ r300transfer->buffer_usage);
+
+ ctx->surface_copy(ctx, dst, 0, 0, src, r300transfer->x, r300transfer->y,
+ transfer->width, transfer->height);
+
+ pipe_surface_reference(&src, NULL);
+ pipe_surface_reference(&dst, NULL);
+}
+
+/* Copy a detiled texture to a tiled one. */
+static void r300_copy_into_tiled_texture(struct pipe_context *ctx,
+ struct r300_transfer *r300transfer)
+{
+ struct pipe_screen *screen = ctx->screen;
+ struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
+ struct pipe_texture *tex = transfer->texture;
+ struct pipe_surface *src, *dst;
+
+ src = screen->get_tex_surface(screen, &r300transfer->detiled_texture->tex,
+ 0, 0, 0,
+ PIPE_BUFFER_USAGE_GPU_READ |
+ PIPE_BUFFER_USAGE_PIXEL);
+
+ dst = screen->get_tex_surface(screen, tex, r300transfer->face,
+ r300transfer->level, r300transfer->zslice,
+ PIPE_BUFFER_USAGE_GPU_WRITE |
+ PIPE_BUFFER_USAGE_PIXEL);
+
+ ctx->surface_copy(ctx, dst, r300transfer->x, r300transfer->y, src, 0, 0,
+ transfer->width, transfer->height);
+
+ /* XXX this flush fixes lots of regressions, not sure why */
+ ctx->flush(ctx, 0, NULL);
+
+ pipe_surface_reference(&src, NULL);
+ pipe_surface_reference(&dst, NULL);
+}
+
static struct pipe_transfer*
r300_get_tex_transfer(struct pipe_screen *screen,
struct pipe_texture *texture,
@@ -38,58 +121,139 @@ r300_get_tex_transfer(struct pipe_screen *screen,
{
struct r300_texture *tex = (struct r300_texture *)texture;
struct r300_transfer *trans;
- struct r300_screen *rscreen = r300_screen(screen);
- unsigned offset;
-
- offset = r300_texture_get_offset(tex, level, zslice, face); /* in bytes */
+ struct r300_screen *r300screen = r300_screen(screen);
+ struct pipe_texture template;
trans = CALLOC_STRUCT(r300_transfer);
if (trans) {
+ /* Initialize the transfer object. */
pipe_texture_reference(&trans->transfer.texture, texture);
- trans->transfer.x = x;
- trans->transfer.y = y;
+ trans->transfer.usage = usage;
trans->transfer.width = w;
trans->transfer.height = h;
- trans->transfer.stride = r300_texture_get_stride(rscreen, tex, level);
- trans->transfer.usage = usage;
- trans->transfer.zslice = zslice;
- trans->transfer.face = face;
+ trans->ctx = r300screen->ctx;
+ trans->x = x;
+ trans->y = y;
+ trans->level = level;
+ trans->zslice = zslice;
+ trans->face = face;
+
+ /* If the texture is tiled, we must create a temporary detiled texture
+ * for this transfer. */
+ if (tex->microtile || tex->macrotile) {
+ trans->buffer_usage = pipe_transfer_buffer_flags(&trans->transfer);
+ trans->render_target_usage =
+ util_format_is_depth_or_stencil(texture->format) ?
+ PIPE_TEXTURE_USAGE_DEPTH_STENCIL :
+ PIPE_TEXTURE_USAGE_RENDER_TARGET;
+
+ template.target = PIPE_TEXTURE_2D;
+ template.format = texture->format;
+ template.width0 = w;
+ template.height0 = h;
+ template.depth0 = 0;
+ template.last_level = 0;
+ template.nr_samples = 0;
+ template.tex_usage = PIPE_TEXTURE_USAGE_DYNAMIC |
+ R300_TEXTURE_USAGE_TRANSFER;
- trans->offset = offset;
+ /* For texture reading, the temporary (detiled) texture is used as
+ * a render target when blitting from a tiled texture. */
+ if (usage & PIPE_TRANSFER_READ) {
+ template.tex_usage |= trans->render_target_usage;
+ }
+ /* For texture writing, the temporary texture is used as a sampler
+ * when blitting into a tiled texture. */
+ if (usage & PIPE_TRANSFER_WRITE) {
+ template.tex_usage |= PIPE_TEXTURE_USAGE_SAMPLER;
+ }
+
+ /* Create the temporary texture. */
+ trans->detiled_texture =
+ (struct r300_texture*)screen->texture_create(screen, &template);
+ assert(!trans->detiled_texture->microtile &&
+ !trans->detiled_texture->macrotile);
+
+ /* Set the stride.
+ * Parameters x, y, level, zslice, and face remain zero. */
+ trans->transfer.stride =
+ r300_texture_get_stride(r300screen, trans->detiled_texture, 0);
+
+ if (usage & PIPE_TRANSFER_READ) {
+ /* We cannot map a tiled texture directly because the data is
+ * in a different order, therefore we do detiling using a blit. */
+ r300_copy_from_tiled_texture(r300screen->ctx, trans);
+ }
+ } else {
+ trans->transfer.x = x;
+ trans->transfer.y = y;
+ trans->transfer.stride =
+ r300_texture_get_stride(r300screen, tex, level);
+ trans->transfer.level = level;
+ trans->transfer.zslice = zslice;
+ trans->transfer.face = face;
+ trans->offset = r300_texture_get_offset(tex, level, zslice, face);
+ }
}
return &trans->transfer;
}
static void r300_tex_transfer_destroy(struct pipe_transfer *trans)
{
- pipe_texture_reference(&trans->texture, NULL);
- FREE(trans);
+ struct r300_transfer *r300transfer = r300_transfer(trans);
+
+ if (r300transfer->detiled_texture) {
+ if (trans->usage & PIPE_TRANSFER_WRITE) {
+ r300_copy_into_tiled_texture(r300transfer->ctx, r300transfer);
+ }
+
+ pipe_texture_reference(
+ (struct pipe_texture**)&r300transfer->detiled_texture, NULL);
+ }
+ pipe_texture_reference(&trans->texture, NULL);
+ FREE(trans);
}
static void* r300_transfer_map(struct pipe_screen *screen,
- struct pipe_transfer *transfer)
+ struct pipe_transfer *transfer)
{
+ struct r300_transfer *r300transfer = r300_transfer(transfer);
struct r300_texture *tex = (struct r300_texture*)transfer->texture;
char *map;
enum pipe_format format = tex->tex.format;
- map = pipe_buffer_map(screen, tex->buffer,
- pipe_transfer_buffer_flags(transfer));
+ if (r300transfer->detiled_texture) {
+ /* The detiled texture is of the same size as the region being mapped
+ * (no offset needed). */
+ return pipe_buffer_map(screen,
+ r300transfer->detiled_texture->buffer,
+ pipe_transfer_buffer_flags(transfer));
+ } else {
+ /* Tiling is disabled. */
+ map = pipe_buffer_map(screen, tex->buffer,
+ pipe_transfer_buffer_flags(transfer));
- if (!map) {
- return NULL;
- }
+ if (!map) {
+ return NULL;
+ }
- return map + r300_transfer(transfer)->offset +
- transfer->y / util_format_get_blockheight(format) * transfer->stride +
- transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
+ return map + r300_transfer(transfer)->offset +
+ transfer->y / util_format_get_blockheight(format) * transfer->stride +
+ transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
+ }
}
static void r300_transfer_unmap(struct pipe_screen *screen,
struct pipe_transfer *transfer)
{
+ struct r300_transfer *r300transfer = r300_transfer(transfer);
struct r300_texture *tex = (struct r300_texture*)transfer->texture;
- pipe_buffer_unmap(screen, tex->buffer);
+
+ if (r300transfer->detiled_texture) {
+ pipe_buffer_unmap(screen, r300transfer->detiled_texture->buffer);
+ } else {
+ pipe_buffer_unmap(screen, tex->buffer);
+ }
}
void r300_init_screen_transfer_functions(struct pipe_screen *screen)