/**************************************************************************
- *
+ *
* Copyright 2010 VMware, Inc.
* All Rights Reserved.
- *
+ *
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
- *
+ *
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
- *
+ *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
+ *
**************************************************************************/
#include "pipe/p_context.h"
#include "st_atom.h"
#include "st_program.h"
+#include "st_util.h"
#include "cso_cache/cso_context.h"
#include "util/u_framebuffer.h"
+#include "main/framebuffer.h"
-/* Second state atom for user clip planes:
+/**
+ * Update the sample locations
*/
-static void update_sample_mask( struct st_context *st )
+static void
+update_sample_locations(struct st_context *st)
+{
+ struct gl_framebuffer *fb = st->ctx->DrawBuffer;
+
+ if (!st->ctx->Extensions.ARB_sample_locations)
+ return;
+
+ if (fb->ProgrammableSampleLocations) {
+ unsigned grid_width, grid_height, size, pixel, sample_index;
+ unsigned samples = st->state.fb_num_samples;
+ bool sample_location_pixel_grid = fb->SampleLocationPixelGrid;
+ uint8_t locations[
+ PIPE_MAX_SAMPLE_LOCATION_GRID_SIZE *
+ PIPE_MAX_SAMPLE_LOCATION_GRID_SIZE * 32];
+
+ st->pipe->screen->get_sample_pixel_grid(
+ st->pipe->screen, samples, &grid_width, &grid_height);
+ size = grid_width * grid_height * samples;
+
+ /**
+ * when a dimension is greater than MAX_SAMPLE_LOCATION_GRID_SIZE,
+ * st->ctx->Driver.GetSamplePixelGrid() returns 1 for both dimensions.
+ */
+ if (grid_width > MAX_SAMPLE_LOCATION_GRID_SIZE ||
+ grid_height > MAX_SAMPLE_LOCATION_GRID_SIZE)
+ sample_location_pixel_grid = false;
+
+ for (pixel = 0; pixel < grid_width * grid_height; pixel++) {
+ for (sample_index = 0; sample_index < samples; sample_index++) {
+ int table_index = sample_index;
+ float x = 0.5f, y = 0.5f;
+ uint8_t loc;
+ if (sample_location_pixel_grid)
+ table_index = pixel * samples + sample_index;
+ if (fb->SampleLocationTable) {
+ x = fb->SampleLocationTable[table_index*2];
+ y = fb->SampleLocationTable[table_index*2+1];
+ }
+ if (st->state.fb_orientation == Y_0_BOTTOM)
+ y = 1.0 - y;
+
+ loc = roundf(CLAMP(x * 16.0f, 0.0f, 15.0f));
+ loc |= (int)roundf(CLAMP(y * 16.0f, 0.0f, 15.0f)) << 4;
+ locations[pixel * samples + sample_index] = loc;
+ }
+ }
+
+ util_sample_locations_flip_y(
+ st->pipe->screen, st->state.fb_height, samples, locations);
+
+ if (!st->state.enable_sample_locations ||
+ st->state.sample_locations_samples != samples ||
+ memcmp(locations, st->state.sample_locations, size) != 0) {
+ st->pipe->set_sample_locations( st->pipe, size, locations);
+
+ st->state.sample_locations_samples = samples;
+ memcpy(st->state.sample_locations, locations, size);
+ }
+ } else if (st->state.enable_sample_locations) {
+ st->pipe->set_sample_locations(st->pipe, 0, NULL);
+ }
+
+ st->state.enable_sample_locations = fb->ProgrammableSampleLocations;
+}
+
+
+/* Update the sample mask and locations for MSAA.
+ */
+void
+st_update_sample_state(struct st_context *st)
{
unsigned sample_mask = 0xffffffff;
- struct pipe_framebuffer_state *framebuffer = &st->state.framebuffer;
- /* dependency here on bound surface (or rather, sample count) is worrying */
- unsigned sample_count = util_framebuffer_get_num_samples(framebuffer);
+ unsigned sample_count = st->state.fb_num_samples;
- if (st->ctx->Multisample.Enabled && sample_count > 1) {
- /* unlike in gallium/d3d10 the mask is only active if msaa is enabled */
+ if (_mesa_is_multisample_enabled(st->ctx) && sample_count > 1) {
+ /* unlike in gallium/d3d10 the mask is only active if msaa is enabled */
if (st->ctx->Multisample.SampleCoverage) {
- unsigned nr_bits;
- nr_bits = (unsigned)
- (st->ctx->Multisample.SampleCoverageValue * (float)sample_count);
+ unsigned nr_bits = (unsigned)
+ (st->ctx->Multisample.SampleCoverageValue * (float) sample_count);
/* there's lot of ways how to do this. We just use first few bits,
- since we have no knowledge of sample positions here. When
- app-supplied mask though is used too might need to be smarter.
- Also, there's an interface restriction here in theory it is
- encouraged this mask not be the same at each pixel. */
+ * since we have no knowledge of sample positions here. When
+ * app-supplied mask though is used too might need to be smarter.
+ * Also, there's an interface restriction here in theory it is
+ * encouraged this mask not be the same at each pixel.
+ */
sample_mask = (1 << nr_bits) - 1;
if (st->ctx->Multisample.SampleCoverageInvert)
sample_mask = ~sample_mask;
sample_mask &= st->ctx->Multisample.SampleMaskValue;
}
- /* mask off unused bits or don't care? */
+ cso_set_sample_mask(st->cso_context, sample_mask);
- if (sample_mask != st->state.sample_mask) {
- st->state.sample_mask = sample_mask;
- cso_set_sample_mask(st->cso_context, sample_mask);
- }
+ update_sample_locations(st);
}
-static void update_sample_shading( struct st_context *st )
+
+void
+st_update_sample_shading(struct st_context *st)
{
if (!st->fp)
return;
if (!st->ctx->Extensions.ARB_sample_shading)
return;
- cso_set_min_samples(
- st->cso_context,
- _mesa_get_min_invocations_per_fragment(st->ctx, &st->fp->Base, false));
+ cso_set_min_samples(st->cso_context,
+ _mesa_get_min_invocations_per_fragment(st->ctx, &st->fp->Base));
}
-
-const struct st_tracked_state st_update_msaa = {
- update_sample_mask /* update */
-};
-
-const struct st_tracked_state st_update_sample_shading = {
- update_sample_shading /* update */
-};
projects / mesa.git / blobdiff