#include "svga_hw_reg.h"
+/**
+ * Return a new index buffer which contains a translation of the original
+ * index buffer. An example of a translation is converting from QUAD
+ * primitives to TRIANGLE primitives. Each set of four indexes for a quad
+ * will be converted to six indices for two triangles.
+ *
+ * Before generating the new index buffer we'll check if the incoming
+ * buffer already has a translated buffer that can be re-used.
+ * This benefits demos like Cinebench R15 which has many
+ * glDrawElements(GL_QUADS) commands (we can't draw quads natively).
+ *
+ * \param offset offset in bytes to first index to translate in src buffer
+ * \param orig_prim original primitive type (like PIPE_PRIM_QUADS)
+ * \param gen_prim new/generated primitive type (like PIPE_PRIM_TRIANGLES)
+ * \param orig_nr number of indexes to translate in source buffer
+ * \param gen_nr number of indexes to write into new/dest buffer
+ * \param index_size bytes per index (2 or 4)
+ * \param translate the translation function from the u_translate module
+ * \param out_buf returns the new/translated index buffer
+ * \return error code to indicate success failure
+ */
static enum pipe_error
translate_indices(struct svga_hwtnl *hwtnl, struct pipe_resource *src,
- unsigned offset, unsigned prim, unsigned nr,
+ unsigned offset,
+ enum pipe_prim_type orig_prim, enum pipe_prim_type gen_prim,
+ unsigned orig_nr, unsigned gen_nr,
unsigned index_size,
u_translate_func translate, struct pipe_resource **out_buf)
{
struct pipe_context *pipe = &hwtnl->svga->pipe;
+ struct svga_screen *screen = svga_screen(pipe->screen);
+ struct svga_buffer *src_sbuf = svga_buffer(src);
struct pipe_transfer *src_transfer = NULL;
struct pipe_transfer *dst_transfer = NULL;
- unsigned size = index_size * nr;
+ unsigned size = index_size * gen_nr;
const void *src_map = NULL;
struct pipe_resource *dst = NULL;
void *dst_map = NULL;
+ assert(index_size == 2 || index_size == 4);
+
+ if (!screen->debug.no_cache_index_buffers) {
+ /* Check if we already have a translated index buffer */
+ if (src_sbuf->translated_indices.buffer &&
+ src_sbuf->translated_indices.orig_prim == orig_prim &&
+ src_sbuf->translated_indices.new_prim == gen_prim &&
+ src_sbuf->translated_indices.offset == offset &&
+ src_sbuf->translated_indices.count == orig_nr &&
+ src_sbuf->translated_indices.index_size == index_size) {
+ pipe_resource_reference(out_buf, src_sbuf->translated_indices.buffer);
+ return PIPE_OK;
+ }
+ }
+
/* Need to trim vertex count to make sure we don't write too much data
* to the dst buffer in the translate() call.
*/
- u_trim_pipe_prim(prim, &nr);
+ u_trim_pipe_prim(gen_prim, &gen_nr);
- size = index_size * nr;
+ size = index_size * gen_nr;
dst = pipe_buffer_create(pipe->screen,
PIPE_BIND_INDEX_BUFFER, PIPE_USAGE_DEFAULT, size);
if (!dst_map)
goto fail;
- translate((const char *) src_map + offset, 0, 0, nr, 0, dst_map);
+ translate((const char *) src_map + offset, 0, 0, gen_nr, 0, dst_map);
pipe_buffer_unmap(pipe, src_transfer);
pipe_buffer_unmap(pipe, dst_transfer);
*out_buf = dst;
+
+ if (!screen->debug.no_cache_index_buffers) {
+ /* Save the new, translated index buffer in the hope we can use it
+ * again in the future.
+ */
+ pipe_resource_reference(&src_sbuf->translated_indices.buffer, dst);
+ src_sbuf->translated_indices.orig_prim = orig_prim;
+ src_sbuf->translated_indices.new_prim = gen_prim;
+ src_sbuf->translated_indices.offset = offset;
+ src_sbuf->translated_indices.count = orig_nr;
+ src_sbuf->translated_indices.index_size = index_size;
+ }
+
return PIPE_OK;
fail:
struct pipe_resource *index_buffer,
unsigned index_size, int index_bias,
unsigned min_index, unsigned max_index,
- unsigned prim, unsigned start,
+ enum pipe_prim_type prim, unsigned start,
unsigned count,
unsigned start_instance,
unsigned instance_count)
struct pipe_resource *index_buffer,
unsigned index_size, int index_bias,
unsigned min_index, unsigned max_index,
- unsigned prim, unsigned start, unsigned count,
+ enum pipe_prim_type prim, unsigned start, unsigned count,
unsigned start_instance, unsigned instance_count)
{
- unsigned gen_prim, gen_size, gen_nr;
+ enum pipe_prim_type gen_prim;
+ unsigned gen_size, gen_nr;
enum indices_mode gen_type;
u_translate_func gen_func;
enum pipe_error ret = PIPE_OK;
- if (hwtnl->api_fillmode != PIPE_POLYGON_MODE_FILL &&
- u_reduced_prim(prim) == PIPE_PRIM_TRIANGLES) {
+ SVGA_STATS_TIME_PUSH(svga_sws(hwtnl->svga),
+ SVGA_STATS_TIME_HWTNLDRAWELEMENTS);
+
+ if (svga_need_unfilled_fallback(hwtnl, prim)) {
gen_type = u_unfilled_translator(prim,
index_size,
count,
if (gen_type == U_TRANSLATE_MEMCPY) {
/* No need for translation, just pass through to hardware:
*/
- return svga_hwtnl_simple_draw_range_elements(hwtnl, index_buffer,
+ ret = svga_hwtnl_simple_draw_range_elements(hwtnl, index_buffer,
index_size,
index_bias,
min_index,
ret = translate_indices(hwtnl,
index_buffer,
start * index_size,
- gen_prim, gen_nr, gen_size, gen_func, &gen_buf);
- if (ret != PIPE_OK)
- goto done;
-
- ret = svga_hwtnl_simple_draw_range_elements(hwtnl,
- gen_buf,
- gen_size,
- index_bias,
- min_index,
- max_index,
- gen_prim, 0, gen_nr,
- start_instance,
- instance_count);
- if (ret != PIPE_OK)
- goto done;
-
-done:
- if (gen_buf)
- pipe_resource_reference(&gen_buf, NULL);
+ prim, gen_prim,
+ count, gen_nr, gen_size,
+ gen_func, &gen_buf);
+ if (ret == PIPE_OK) {
+ ret = svga_hwtnl_simple_draw_range_elements(hwtnl,
+ gen_buf,
+ gen_size,
+ index_bias,
+ min_index,
+ max_index,
+ gen_prim, 0, gen_nr,
+ start_instance,
+ instance_count);
+ }
- return ret;
+ if (gen_buf) {
+ pipe_resource_reference(&gen_buf, NULL);
+ }
}
+
+ SVGA_STATS_TIME_POP(svga_sws(hwtnl->svga));
+ return ret;
}
projects / mesa.git / blobdiff