#include "program/program.h"
#include "brw_state.h"
#include "brw_defines.h"
+#include "brw_wm.h"
#include "intel_batchbuffer.h"
void
gen8_upload_ps_extra(struct brw_context *brw,
- const struct gl_fragment_program *fp,
- const struct brw_wm_prog_data *prog_data,
- bool multisampled_fbo)
+ const struct brw_wm_prog_data *prog_data)
{
struct gl_context *ctx = &brw->ctx;
uint32_t dw1 = 0;
if (prog_data->num_varying_inputs != 0)
dw1 |= GEN8_PSX_ATTRIBUTE_ENABLE;
- if (fp->Base.InputsRead & VARYING_BIT_POS)
- dw1 |= GEN8_PSX_USES_SOURCE_DEPTH | GEN8_PSX_USES_SOURCE_W;
+ if (prog_data->uses_src_depth)
+ dw1 |= GEN8_PSX_USES_SOURCE_DEPTH;
- if (multisampled_fbo &&
- _mesa_get_min_invocations_per_fragment(ctx, fp, false) > 1)
+ if (prog_data->uses_src_w)
+ dw1 |= GEN8_PSX_USES_SOURCE_W;
+
+ if (prog_data->persample_dispatch)
dw1 |= GEN8_PSX_SHADER_IS_PER_SAMPLE;
- if (fp->Base.SystemValuesRead & SYSTEM_BIT_SAMPLE_MASK_IN)
- dw1 |= GEN8_PSX_SHADER_USES_INPUT_COVERAGE_MASK;
+ /* _NEW_MULTISAMPLE | BRW_NEW_CONSERVATIVE_RASTERIZATION */
+ if (prog_data->uses_sample_mask) {
+ if (brw->gen >= 9) {
+ if (prog_data->post_depth_coverage)
+ dw1 |= BRW_PCICMS_DEPTH << GEN9_PSX_SHADER_NORMAL_COVERAGE_MASK_SHIFT;
+ else if (prog_data->inner_coverage && ctx->IntelConservativeRasterization)
+ dw1 |= BRW_PSICMS_INNER << GEN9_PSX_SHADER_NORMAL_COVERAGE_MASK_SHIFT;
+ else
+ dw1 |= BRW_PSICMS_NORMAL << GEN9_PSX_SHADER_NORMAL_COVERAGE_MASK_SHIFT;
+ }
+ else {
+ dw1 |= GEN8_PSX_SHADER_USES_INPUT_COVERAGE_MASK;
+ }
+ }
if (prog_data->uses_omask)
dw1 |= GEN8_PSX_OMASK_TO_RENDER_TARGET;
+ if (brw->gen >= 9 && prog_data->pulls_bary)
+ dw1 |= GEN9_PSX_SHADER_PULLS_BARY;
+
+ /* The stricter cross-primitive coherency guarantees that the hardware
+ * gives us with the "Accesses UAV" bit set for at least one shader stage
+ * and the "UAV coherency required" bit set on the 3DPRIMITIVE command are
+ * redundant within the current image, atomic counter and SSBO GL APIs,
+ * which all have very loose ordering and coherency requirements and
+ * generally rely on the application to insert explicit barriers when a
+ * shader invocation is expected to see the memory writes performed by the
+ * invocations of some previous primitive. Regardless of the value of "UAV
+ * coherency required", the "Accesses UAV" bits will implicitly cause an in
+ * most cases useless DC flush when the lowermost stage with the bit set
+ * finishes execution.
+ *
+ * It would be nice to disable it, but in some cases we can't because on
+ * Gen8+ it also has an influence on rasterization via the PS UAV-only
+ * signal (which could be set independently from the coherency mechanism in
+ * the 3DSTATE_WM command on Gen7), and because in some cases it will
+ * determine whether the hardware skips execution of the fragment shader or
+ * not via the ThreadDispatchEnable signal. However if we know that
+ * GEN8_PS_BLEND_HAS_WRITEABLE_RT is going to be set and
+ * GEN8_PSX_PIXEL_SHADER_NO_RT_WRITE is not set it shouldn't make any
+ * difference so we may just disable it here.
+ *
+ * Gen8 hardware tries to compute ThreadDispatchEnable for us but doesn't
+ * take into account KillPixels when no depth or stencil writes are enabled.
+ * In order for occlusion queries to work correctly with no attachments, we
+ * need to force-enable here.
+ *
+ * BRW_NEW_FS_PROG_DATA | BRW_NEW_FRAGMENT_PROGRAM | _NEW_BUFFERS | _NEW_COLOR
+ */
+ if ((prog_data->has_side_effects || prog_data->uses_kill) &&
+ !brw_color_buffer_write_enabled(brw))
+ dw1 |= GEN8_PSX_SHADER_HAS_UAV;
+
+ if (prog_data->computed_stencil) {
+ assert(brw->gen >= 9);
+ dw1 |= GEN9_PSX_SHADER_COMPUTES_STENCIL;
+ }
+
BEGIN_BATCH(2);
OUT_BATCH(_3DSTATE_PS_EXTRA << 16 | (2 - 2));
OUT_BATCH(dw1);
static void
upload_ps_extra(struct brw_context *brw)
{
- /* BRW_NEW_FRAGMENT_PROGRAM */
- const struct brw_fragment_program *fp =
- brw_fragment_program_const(brw->fragment_program);
/* BRW_NEW_FS_PROG_DATA */
- const struct brw_wm_prog_data *prog_data = brw->wm.prog_data;
- /* BRW_NEW_NUM_SAMPLES */
- const bool multisampled_fbo = brw->num_samples > 1;
-
- gen8_upload_ps_extra(brw, &fp->program, prog_data, multisampled_fbo);
+ gen8_upload_ps_extra(brw, brw_wm_prog_data(brw->wm.base.prog_data));
}
const struct brw_tracked_state gen8_ps_extra = {
.dirty = {
- .mesa = 0,
- .brw = BRW_NEW_CONTEXT |
+ .mesa = _NEW_BUFFERS | _NEW_COLOR,
+ .brw = BRW_NEW_BLORP |
+ BRW_NEW_CONTEXT |
BRW_NEW_FRAGMENT_PROGRAM |
BRW_NEW_FS_PROG_DATA |
- BRW_NEW_NUM_SAMPLES,
+ BRW_NEW_CONSERVATIVE_RASTERIZATION,
},
.emit = upload_ps_extra,
};
struct gl_context *ctx = &brw->ctx;
uint32_t dw1 = 0;
+ /* BRW_NEW_FS_PROG_DATA */
+ const struct brw_wm_prog_data *wm_prog_data =
+ brw_wm_prog_data(brw->wm.base.prog_data);
+
dw1 |= GEN7_WM_STATISTICS_ENABLE;
dw1 |= GEN7_WM_LINE_AA_WIDTH_1_0;
dw1 |= GEN7_WM_LINE_END_CAP_AA_WIDTH_0_5;
if (ctx->Polygon.StippleFlag)
dw1 |= GEN7_WM_POLYGON_STIPPLE_ENABLE;
- /* BRW_NEW_FS_PROG_DATA */
- dw1 |= brw->wm.prog_data->barycentric_interp_modes <<
+ dw1 |= wm_prog_data->barycentric_interp_modes <<
GEN7_WM_BARYCENTRIC_INTERPOLATION_MODE_SHIFT;
+ /* BRW_NEW_FS_PROG_DATA */
+ if (wm_prog_data->early_fragment_tests)
+ dw1 |= GEN7_WM_EARLY_DS_CONTROL_PREPS;
+ else if (wm_prog_data->has_side_effects)
+ dw1 |= GEN7_WM_EARLY_DS_CONTROL_PSEXEC;
+
BEGIN_BATCH(2);
OUT_BATCH(_3DSTATE_WM << 16 | (2 - 2));
OUT_BATCH(dw1);
.dirty = {
.mesa = _NEW_LINE |
_NEW_POLYGON,
- .brw = BRW_NEW_CONTEXT |
+ .brw = BRW_NEW_BLORP |
+ BRW_NEW_CONTEXT |
BRW_NEW_FS_PROG_DATA,
},
.emit = upload_wm_state,
};
-
-void
-gen8_upload_ps_state(struct brw_context *brw,
- const struct gl_fragment_program *fp,
- const struct brw_stage_state *stage_state,
- const struct brw_wm_prog_data *prog_data,
- uint32_t fast_clear_op)
-{
- struct gl_context *ctx = &brw->ctx;
- uint32_t dw3 = 0, dw6 = 0, dw7 = 0, ksp0, ksp2 = 0;
-
- /* Initialize the execution mask with VMask. Otherwise, derivatives are
- * incorrect for subspans where some of the pixels are unlit. We believe
- * the bit just didn't take effect in previous generations.
- */
- dw3 |= GEN7_PS_VECTOR_MASK_ENABLE;
-
- const unsigned sampler_count =
- DIV_ROUND_UP(CLAMP(stage_state->sampler_count, 0, 16), 4);
- dw3 |= SET_FIELD(sampler_count, GEN7_PS_SAMPLER_COUNT);
-
- /* BRW_NEW_FS_PROG_DATA */
- dw3 |=
- ((prog_data->base.binding_table.size_bytes / 4) <<
- GEN7_PS_BINDING_TABLE_ENTRY_COUNT_SHIFT);
-
- if (prog_data->base.use_alt_mode)
- dw3 |= GEN7_PS_FLOATING_POINT_MODE_ALT;
-
- /* 3DSTATE_PS expects the number of threads per PSD, which is always 64;
- * it implicitly scales for different GT levels (which have some # of PSDs).
- *
- * In Gen8 the format is U8-2 whereas in Gen9 it is U8-1.
- */
- if (brw->gen >= 9)
- dw6 |= (64 - 1) << HSW_PS_MAX_THREADS_SHIFT;
- else
- dw6 |= (64 - 2) << HSW_PS_MAX_THREADS_SHIFT;
-
- if (prog_data->base.nr_params > 0)
- dw6 |= GEN7_PS_PUSH_CONSTANT_ENABLE;
-
- /* From the documentation for this packet:
- * "If the PS kernel does not need the Position XY Offsets to
- * compute a Position Value, then this field should be programmed
- * to POSOFFSET_NONE."
- *
- * "SW Recommendation: If the PS kernel needs the Position Offsets
- * to compute a Position XY value, this field should match Position
- * ZW Interpolation Mode to ensure a consistent position.xyzw
- * computation."
- *
- * We only require XY sample offsets. So, this recommendation doesn't
- * look useful at the moment. We might need this in future.
- */
- if (prog_data->uses_pos_offset)
- dw6 |= GEN7_PS_POSOFFSET_SAMPLE;
- else
- dw6 |= GEN7_PS_POSOFFSET_NONE;
-
- dw6 |= fast_clear_op;
-
- /* _NEW_MULTISAMPLE
- * In case of non 1x per sample shading, only one of SIMD8 and SIMD16
- * should be enabled. We do 'SIMD16 only' dispatch if a SIMD16 shader
- * is successfully compiled. In majority of the cases that bring us
- * better performance than 'SIMD8 only' dispatch.
- */
- int min_invocations_per_fragment =
- _mesa_get_min_invocations_per_fragment(ctx, fp, false);
- assert(min_invocations_per_fragment >= 1);
-
- if (prog_data->prog_offset_16 || prog_data->no_8) {
- dw6 |= GEN7_PS_16_DISPATCH_ENABLE;
- if (!prog_data->no_8 && min_invocations_per_fragment == 1) {
- dw6 |= GEN7_PS_8_DISPATCH_ENABLE;
- dw7 |= (prog_data->base.dispatch_grf_start_reg <<
- GEN7_PS_DISPATCH_START_GRF_SHIFT_0);
- dw7 |= (prog_data->dispatch_grf_start_reg_16 <<
- GEN7_PS_DISPATCH_START_GRF_SHIFT_2);
- ksp0 = stage_state->prog_offset;
- ksp2 = stage_state->prog_offset + prog_data->prog_offset_16;
- } else {
- dw7 |= (prog_data->dispatch_grf_start_reg_16 <<
- GEN7_PS_DISPATCH_START_GRF_SHIFT_0);
-
- ksp0 = stage_state->prog_offset + prog_data->prog_offset_16;
- }
- } else {
- dw6 |= GEN7_PS_8_DISPATCH_ENABLE;
- dw7 |= (prog_data->base.dispatch_grf_start_reg <<
- GEN7_PS_DISPATCH_START_GRF_SHIFT_0);
- ksp0 = stage_state->prog_offset;
- }
-
- BEGIN_BATCH(12);
- OUT_BATCH(_3DSTATE_PS << 16 | (12 - 2));
- OUT_BATCH(ksp0);
- OUT_BATCH(0);
- OUT_BATCH(dw3);
- if (prog_data->base.total_scratch) {
- OUT_RELOC64(stage_state->scratch_bo,
- I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
- ffs(prog_data->base.total_scratch) - 11);
- } else {
- OUT_BATCH(0);
- OUT_BATCH(0);
- }
- OUT_BATCH(dw6);
- OUT_BATCH(dw7);
- OUT_BATCH(0); /* kernel 1 pointer */
- OUT_BATCH(0);
- OUT_BATCH(ksp2);
- OUT_BATCH(0);
- ADVANCE_BATCH();
-}
-
-static void
-upload_ps_state(struct brw_context *brw)
-{
- /* BRW_NEW_FS_PROG_DATA */
- const struct brw_wm_prog_data *prog_data = brw->wm.prog_data;
- gen8_upload_ps_state(brw, brw->fragment_program, &brw->wm.base, prog_data,
- brw->wm.fast_clear_op);
-}
-
-const struct brw_tracked_state gen8_ps_state = {
- .dirty = {
- .mesa = _NEW_MULTISAMPLE,
- .brw = BRW_NEW_BATCH |
- BRW_NEW_FRAGMENT_PROGRAM |
- BRW_NEW_FS_PROG_DATA,
- },
- .emit = upload_ps_state,
-};
projects / mesa.git / blobdiff