#include "intel_batchbuffer.h"
static void
-upload_gs_state(struct brw_context *brw)
+gen6_upload_gs_push_constants(struct brw_context *brw)
+{
+ struct brw_stage_state *stage_state = &brw->gs.base;
+
+ /* BRW_NEW_GEOMETRY_PROGRAM */
+ const struct brw_geometry_program *gp =
+ (struct brw_geometry_program *) brw->geometry_program;
+
+ if (gp) {
+ /* BRW_NEW_GS_PROG_DATA */
+ struct brw_stage_prog_data *prog_data = &brw->gs.prog_data->base.base;
+
+ gen6_upload_push_constants(brw, &gp->program.Base, prog_data,
+ stage_state, AUB_TRACE_VS_CONSTANTS);
+ }
+
+ if (brw->gen >= 7)
+ gen7_upload_constant_state(brw, stage_state, gp, _3DSTATE_CONSTANT_GS);
+}
+
+const struct brw_tracked_state gen6_gs_push_constants = {
+ .dirty = {
+ .mesa = _NEW_PROGRAM_CONSTANTS |
+ _NEW_TRANSFORM,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_GEOMETRY_PROGRAM |
+ BRW_NEW_GS_PROG_DATA |
+ BRW_NEW_PUSH_CONSTANT_ALLOCATION,
+ },
+ .emit = gen6_upload_gs_push_constants,
+};
+
+static void
+upload_gs_state_for_tf(struct brw_context *brw)
{
- struct intel_context *intel = &brw->intel;
-
- /* Disable all the constant buffers. */
- BEGIN_BATCH(5);
- OUT_BATCH(CMD_3D_CONSTANT_GS_STATE << 16 | (5 - 2));
- OUT_BATCH(0);
- OUT_BATCH(0);
- OUT_BATCH(0);
- OUT_BATCH(0);
+ BEGIN_BATCH(7);
+ OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
+ OUT_BATCH(brw->ff_gs.prog_offset);
+ OUT_BATCH(GEN6_GS_SPF_MODE | GEN6_GS_VECTOR_MASK_ENABLE);
+ OUT_BATCH(0); /* no scratch space */
+ OUT_BATCH((2 << GEN6_GS_DISPATCH_START_GRF_SHIFT) |
+ (brw->ff_gs.prog_data->urb_read_length << GEN6_GS_URB_READ_LENGTH_SHIFT));
+ OUT_BATCH(((brw->max_gs_threads - 1) << GEN6_GS_MAX_THREADS_SHIFT) |
+ GEN6_GS_STATISTICS_ENABLE |
+ GEN6_GS_SO_STATISTICS_ENABLE |
+ GEN6_GS_RENDERING_ENABLE);
+ OUT_BATCH(GEN6_GS_SVBI_PAYLOAD_ENABLE |
+ GEN6_GS_SVBI_POSTINCREMENT_ENABLE |
+ (brw->ff_gs.prog_data->svbi_postincrement_value <<
+ GEN6_GS_SVBI_POSTINCREMENT_VALUE_SHIFT) |
+ GEN6_GS_ENABLE);
ADVANCE_BATCH();
+}
- intel_batchbuffer_emit_mi_flush(intel->batch);
+static void
+upload_gs_state(struct brw_context *brw)
+{
+ /* BRW_NEW_GEOMETRY_PROGRAM */
+ bool active = brw->geometry_program;
+ /* BRW_NEW_GS_PROG_DATA */
+ const struct brw_vue_prog_data *prog_data = &brw->gs.prog_data->base;
+ const struct brw_stage_state *stage_state = &brw->gs.base;
- if (brw->gs.prog_bo) {
+ if (!active || stage_state->push_const_size == 0) {
+ /* Disable the push constant buffers. */
+ BEGIN_BATCH(5);
+ OUT_BATCH(_3DSTATE_CONSTANT_GS << 16 | (5 - 2));
+ OUT_BATCH(0);
+ OUT_BATCH(0);
+ OUT_BATCH(0);
+ OUT_BATCH(0);
+ ADVANCE_BATCH();
+ } else {
+ BEGIN_BATCH(5);
+ OUT_BATCH(_3DSTATE_CONSTANT_GS << 16 |
+ GEN6_CONSTANT_BUFFER_0_ENABLE |
+ (5 - 2));
+ /* Pointer to the GS constant buffer. Covered by the set of
+ * state flags from gen6_upload_vs_constants
+ */
+ OUT_BATCH(stage_state->push_const_offset +
+ stage_state->push_const_size - 1);
+ OUT_BATCH(0);
+ OUT_BATCH(0);
+ OUT_BATCH(0);
+ ADVANCE_BATCH();
+ }
+
+ if (active) {
BEGIN_BATCH(7);
- OUT_BATCH(CMD_3D_GS_STATE << 16 | (7 - 2));
- OUT_RELOC(brw->gs.prog_bo, I915_GEM_DOMAIN_INSTRUCTION, 0, 0);
- OUT_BATCH(GEN6_GS_SPF_MODE |
- (0 << GEN6_GS_SAMPLER_COUNT_SHIFT) |
- (0 << GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
- OUT_BATCH(0); /* scratch space base offset */
- OUT_BATCH((1 << GEN6_GS_DISPATCH_START_GRF_SHIFT) |
- (brw->gs.prog_data->urb_read_length << GEN6_GS_URB_READ_LENGTH_SHIFT) |
- (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT));
- OUT_BATCH((0 << GEN6_GS_MAX_THREADS_SHIFT) |
- GEN6_GS_STATISTICS_ENABLE |
- GEN6_GS_RENDERING_ENABLE);
- OUT_BATCH(GEN6_GS_ENABLE);
+ OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
+ OUT_BATCH(stage_state->prog_offset);
+
+ /* GEN6_GS_SPF_MODE and GEN6_GS_VECTOR_MASK_ENABLE are enabled as it
+ * was previously done for gen6.
+ *
+ * TODO: test with both disabled to see if the HW is behaving
+ * as expected, like in gen7.
+ */
+ OUT_BATCH(GEN6_GS_SPF_MODE | GEN6_GS_VECTOR_MASK_ENABLE |
+ ((ALIGN(stage_state->sampler_count, 4)/4) <<
+ GEN6_GS_SAMPLER_COUNT_SHIFT) |
+ ((prog_data->base.binding_table.size_bytes / 4) <<
+ GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
+
+ if (prog_data->base.total_scratch) {
+ OUT_RELOC(stage_state->scratch_bo,
+ I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
+ ffs(prog_data->base.total_scratch) - 11);
+ } else {
+ OUT_BATCH(0); /* no scratch space */
+ }
+
+ OUT_BATCH((prog_data->urb_read_length <<
+ GEN6_GS_URB_READ_LENGTH_SHIFT) |
+ (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT) |
+ (prog_data->base.dispatch_grf_start_reg <<
+ GEN6_GS_DISPATCH_START_GRF_SHIFT));
+
+ OUT_BATCH(((brw->max_gs_threads - 1) << GEN6_GS_MAX_THREADS_SHIFT) |
+ GEN6_GS_STATISTICS_ENABLE |
+ GEN6_GS_SO_STATISTICS_ENABLE |
+ GEN6_GS_RENDERING_ENABLE);
+
+ if (brw->gs.prog_data->gen6_xfb_enabled) {
+ /* GEN6_GS_REORDER is equivalent to GEN7_GS_REORDER_TRAILING
+ * in gen7. SNB and IVB specs are the same regarding the reordering of
+ * TRISTRIP/TRISTRIP_REV vertices and triangle orientation, so we do
+ * the same thing in both generations. For more details, see the
+ * comment in gen7_gs_state.c
+ */
+ OUT_BATCH(GEN6_GS_REORDER |
+ GEN6_GS_SVBI_PAYLOAD_ENABLE |
+ GEN6_GS_ENABLE);
+ } else {
+ OUT_BATCH(GEN6_GS_REORDER | GEN6_GS_ENABLE);
+ }
ADVANCE_BATCH();
+ } else if (brw->ff_gs.prog_active) {
+ /* In gen6, transform feedback for the VS stage is done with an ad-hoc GS
+ * program. This function provides the needed 3DSTATE_GS for this.
+ */
+ upload_gs_state_for_tf(brw);
} else {
+ /* No GS function required */
BEGIN_BATCH(7);
- OUT_BATCH(CMD_3D_GS_STATE << 16 | (7 - 2));
+ OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
OUT_BATCH(0); /* prog_bo */
OUT_BATCH((0 << GEN6_GS_SAMPLER_COUNT_SHIFT) |
- (0 << GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
+ (0 << GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
OUT_BATCH(0); /* scratch space base offset */
OUT_BATCH((1 << GEN6_GS_DISPATCH_START_GRF_SHIFT) |
- (0 << GEN6_GS_URB_READ_LENGTH_SHIFT) |
- (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT));
+ (0 << GEN6_GS_URB_READ_LENGTH_SHIFT) |
+ (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT));
OUT_BATCH((0 << GEN6_GS_MAX_THREADS_SHIFT) |
- GEN6_GS_STATISTICS_ENABLE |
- GEN6_GS_RENDERING_ENABLE);
- OUT_BATCH(0);
+ GEN6_GS_STATISTICS_ENABLE |
+ GEN6_GS_RENDERING_ENABLE);
+ OUT_BATCH(0);
ADVANCE_BATCH();
}
+ brw->gs.enabled = active;
}
const struct brw_tracked_state gen6_gs_state = {
.dirty = {
- .mesa = _NEW_TRANSFORM,
- .brw = (BRW_NEW_CURBE_OFFSETS |
- BRW_NEW_URB_FENCE |
- BRW_NEW_CONTEXT),
- .cache = CACHE_NEW_GS_PROG
+ .mesa = _NEW_PROGRAM_CONSTANTS |
+ _NEW_TRANSFORM,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_CONTEXT |
+ BRW_NEW_FF_GS_PROG_DATA |
+ BRW_NEW_GEOMETRY_PROGRAM |
+ BRW_NEW_GS_PROG_DATA |
+ BRW_NEW_PUSH_CONSTANT_ALLOCATION,
},
.emit = upload_gs_state,
};
projects / mesa.git / blobdiff