diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_wm_surface_state.c | 2 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/i965/genX_state_upload.c | 69 |
2 files changed, 64 insertions, 7 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c index d4960a01cbd..8d18179d89a 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c +++ b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c @@ -1446,6 +1446,8 @@ brw_upload_ubo_surfaces(struct brw_context *brw, struct gl_program *prog, } } + stage_state->push_constants_dirty = true; + if (prog->info.num_ubos || prog->info.num_ssbos) brw->ctx.NewDriverState |= BRW_NEW_SURFACES; } diff --git a/src/mesa/drivers/dri/i965/genX_state_upload.c b/src/mesa/drivers/dri/i965/genX_state_upload.c index 006bb5096fa..54a547cb799 100644 --- a/src/mesa/drivers/dri/i965/genX_state_upload.c +++ b/src/mesa/drivers/dri/i965/genX_state_upload.c @@ -2847,6 +2847,8 @@ UNUSED static const uint32_t push_constant_opcodes[] = { static void genX(upload_push_constant_packets)(struct brw_context *brw) { + struct gl_context *ctx = &brw->ctx; + UNUSED uint32_t mocs = GEN_GEN < 8 ? GEN7_MOCS_L3 : 0; struct brw_stage_state *stage_states[] = { @@ -2863,19 +2865,71 @@ genX(upload_push_constant_packets)(struct brw_context *brw) for (int stage = 0; stage <= MESA_SHADER_FRAGMENT; stage++) { struct brw_stage_state *stage_state = stage_states[stage]; - bool active = stage_state->prog_data && stage_state->push_const_size > 0; + struct gl_program *prog = ctx->_Shader->CurrentProgram[stage]; if (!stage_state->push_constants_dirty) continue; brw_batch_emit(brw, GENX(3DSTATE_CONSTANT_VS), pkt) { pkt._3DCommandSubOpcode = push_constant_opcodes[stage]; - if (active) { + if (stage_state->prog_data) { #if GEN_GEN >= 8 || GEN_IS_HASWELL - pkt.ConstantBody.ReadLength[2] = stage_state->push_const_size; - pkt.ConstantBody.Buffer[2] = - render_ro_bo(stage_state->push_const_bo, - stage_state->push_const_offset); + /* The Skylake PRM contains the following restriction: + * + * "The driver must ensure The following case does not occur + * without a flush to the 3D engine: 3DSTATE_CONSTANT_* with + * buffer 3 read length equal to zero committed followed by a + * 3DSTATE_CONSTANT_* with buffer 0 read length not equal to + * zero committed." + * + * To avoid this, we program the buffers in the highest slots. + * This way, slot 0 is only used if slot 3 is also used. + */ + int n = 3; + + for (int i = 3; i >= 0; i--) { + const struct brw_ubo_range *range = + &stage_state->prog_data->ubo_ranges[i]; + + if (range->length == 0) + continue; + + const struct gl_uniform_block *block = + prog->sh.UniformBlocks[range->block]; + const struct gl_uniform_buffer_binding *binding = + &ctx->UniformBufferBindings[block->Binding]; + + if (binding->BufferObject == ctx->Shared->NullBufferObj) { + static unsigned msg_id = 0; + _mesa_gl_debug(ctx, &msg_id, MESA_DEBUG_SOURCE_API, + MESA_DEBUG_TYPE_UNDEFINED, + MESA_DEBUG_SEVERITY_HIGH, + "UBO %d unbound, %s shader uniform data " + "will be undefined.", + range->block, + _mesa_shader_stage_to_string(stage)); + continue; + } + + assert(binding->Offset % 32 == 0); + + struct brw_bo *bo = intel_bufferobj_buffer(brw, + intel_buffer_object(binding->BufferObject), + binding->Offset, range->length * 32, false); + + pkt.ConstantBody.ReadLength[n] = range->length; + pkt.ConstantBody.Buffer[n] = + render_ro_bo(bo, range->start * 32 + binding->Offset); + n--; + } + + if (stage_state->push_const_size > 0) { + assert(n >= 0); + pkt.ConstantBody.ReadLength[n] = stage_state->push_const_size; + pkt.ConstantBody.Buffer[n] = + render_ro_bo(stage_state->push_const_bo, + stage_state->push_const_offset); + } #else pkt.ConstantBody.ReadLength[0] = stage_state->push_const_size; pkt.ConstantBody.Buffer[0].offset = @@ -3596,7 +3650,8 @@ genX(upload_ps)(struct brw_context *brw) ps.MaximumNumberofThreads = devinfo->max_wm_threads - 1; #endif - if (prog_data->base.nr_params > 0) + if (prog_data->base.nr_params > 0 || + prog_data->base.ubo_ranges[0].length > 0) ps.PushConstantEnable = true; #if GEN_GEN < 8 |