/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */

/*
 * Copyright (C) 2014 Rob Clark <robclark@freedesktop.org>
 *
 * 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 without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR 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.
 *
 * Authors:
 *    Rob Clark <robclark@freedesktop.org>
 */

#include "pipe/p_state.h"
#include "util/u_string.h"
#include "util/u_memory.h"
#include "util/u_helpers.h"
#include "util/u_format.h"
#include "util/u_viewport.h"

#include "freedreno_resource.h"
#include "freedreno_query_hw.h"

#include "fd4_emit.h"
#include "fd4_blend.h"
#include "fd4_context.h"
#include "fd4_program.h"
#include "fd4_rasterizer.h"
#include "fd4_texture.h"
#include "fd4_format.h"
#include "fd4_zsa.h"

static const enum adreno_state_block sb[] = {
	[SHADER_VERTEX]   = SB_VERT_SHADER,
	[SHADER_FRAGMENT] = SB_FRAG_SHADER,
};

/* regid:          base const register
 * prsc or dwords: buffer containing constant values
 * sizedwords:     size of const value buffer
 */
void
fd4_emit_const(struct fd_ringbuffer *ring, enum shader_t type,
		uint32_t regid, uint32_t offset, uint32_t sizedwords,
		const uint32_t *dwords, struct pipe_resource *prsc)
{
	uint32_t i, sz;
	enum adreno_state_src src;

	debug_assert((regid % 4) == 0);
	debug_assert((sizedwords % 4) == 0);

	if (prsc) {
		sz = 0;
		src = 0x2;  // TODO ??
	} else {
		sz = sizedwords;
		src = SS_DIRECT;
	}

	OUT_PKT3(ring, CP_LOAD_STATE, 2 + sz);
	OUT_RING(ring, CP_LOAD_STATE_0_DST_OFF(regid/4) |
			CP_LOAD_STATE_0_STATE_SRC(src) |
			CP_LOAD_STATE_0_STATE_BLOCK(sb[type]) |
			CP_LOAD_STATE_0_NUM_UNIT(sizedwords/4));
	if (prsc) {
		struct fd_bo *bo = fd_resource(prsc)->bo;
		OUT_RELOC(ring, bo, offset,
				CP_LOAD_STATE_1_STATE_TYPE(ST_CONSTANTS), 0);
	} else {
		OUT_RING(ring, CP_LOAD_STATE_1_EXT_SRC_ADDR(0) |
				CP_LOAD_STATE_1_STATE_TYPE(ST_CONSTANTS));
		dwords = (uint32_t *)&((uint8_t *)dwords)[offset];
	}
	for (i = 0; i < sz; i++) {
		OUT_RING(ring, dwords[i]);
	}
}

static void
fd4_emit_const_bo(struct fd_ringbuffer *ring, enum shader_t type, boolean write,
		uint32_t regid, uint32_t num, struct pipe_resource **prscs, uint32_t *offsets)
{
	uint32_t i;

	debug_assert((regid % 4) == 0);
	debug_assert((num % 4) == 0);

	OUT_PKT3(ring, CP_LOAD_STATE, 2 + num);
	OUT_RING(ring, CP_LOAD_STATE_0_DST_OFF(regid/4) |
			CP_LOAD_STATE_0_STATE_SRC(SS_DIRECT) |
			CP_LOAD_STATE_0_STATE_BLOCK(sb[type]) |
			CP_LOAD_STATE_0_NUM_UNIT(num/4));
	OUT_RING(ring, CP_LOAD_STATE_1_EXT_SRC_ADDR(0) |
			CP_LOAD_STATE_1_STATE_TYPE(ST_CONSTANTS));

	for (i = 0; i < num; i++) {
		if (prscs[i]) {
			if (write) {
				OUT_RELOCW(ring, fd_resource(prscs[i])->bo, offsets[i], 0, 0);
			} else {
				OUT_RELOC(ring, fd_resource(prscs[i])->bo, offsets[i], 0, 0);
			}
		} else {
			OUT_RING(ring, 0xbad00000 | (i << 16));
		}
	}
}

static void
emit_textures(struct fd_context *ctx, struct fd_ringbuffer *ring,
		enum adreno_state_block sb, struct fd_texture_stateobj *tex,
		const struct ir3_shader_variant *v)
{
	static const uint32_t bcolor_reg[] = {
			[SB_VERT_TEX] = REG_A4XX_TPL1_TP_VS_BORDER_COLOR_BASE_ADDR,
			[SB_FRAG_TEX] = REG_A4XX_TPL1_TP_FS_BORDER_COLOR_BASE_ADDR,
	};
	struct fd4_context *fd4_ctx = fd4_context(ctx);
	bool needs_border = false;
	unsigned i;

	if (tex->num_samplers > 0) {
		int num_samplers;

		/* not sure if this is an a420.0 workaround, but we seem
		 * to need to emit these in pairs.. emit a final dummy
		 * entry if odd # of samplers:
		 */
		num_samplers = align(tex->num_samplers, 2);

		/* output sampler state: */
		OUT_PKT3(ring, CP_LOAD_STATE, 2 + (2 * num_samplers));
		OUT_RING(ring, CP_LOAD_STATE_0_DST_OFF(0) |
				CP_LOAD_STATE_0_STATE_SRC(SS_DIRECT) |
				CP_LOAD_STATE_0_STATE_BLOCK(sb) |
				CP_LOAD_STATE_0_NUM_UNIT(num_samplers));
		OUT_RING(ring, CP_LOAD_STATE_1_STATE_TYPE(ST_SHADER) |
				CP_LOAD_STATE_1_EXT_SRC_ADDR(0));
		for (i = 0; i < tex->num_samplers; i++) {
			static const struct fd4_sampler_stateobj dummy_sampler = {};
			const struct fd4_sampler_stateobj *sampler = tex->samplers[i] ?
					fd4_sampler_stateobj(tex->samplers[i]) :
					&dummy_sampler;
			OUT_RING(ring, sampler->texsamp0);
			OUT_RING(ring, sampler->texsamp1);

			needs_border |= sampler->needs_border;
		}

		for (; i < num_samplers; i++) {
			OUT_RING(ring, 0x00000000);
			OUT_RING(ring, 0x00000000);
		}
	}

	if (tex->num_textures > 0) {
		unsigned num_textures = tex->num_textures + v->astc_srgb.count;

		/* emit texture state: */
		OUT_PKT3(ring, CP_LOAD_STATE, 2 + (8 * num_textures));
		OUT_RING(ring, CP_LOAD_STATE_0_DST_OFF(0) |
				CP_LOAD_STATE_0_STATE_SRC(SS_DIRECT) |
				CP_LOAD_STATE_0_STATE_BLOCK(sb) |
				CP_LOAD_STATE_0_NUM_UNIT(num_textures));
		OUT_RING(ring, CP_LOAD_STATE_1_STATE_TYPE(ST_CONSTANTS) |
				CP_LOAD_STATE_1_EXT_SRC_ADDR(0));
		for (i = 0; i < tex->num_textures; i++) {
			static const struct fd4_pipe_sampler_view dummy_view = {};
			const struct fd4_pipe_sampler_view *view = tex->textures[i] ?
					fd4_pipe_sampler_view(tex->textures[i]) :
					&dummy_view;

			OUT_RING(ring, view->texconst0);
			OUT_RING(ring, view->texconst1);
			OUT_RING(ring, view->texconst2);
			OUT_RING(ring, view->texconst3);
			if (view->base.texture) {
				struct fd_resource *rsc = fd_resource(view->base.texture);
				OUT_RELOC(ring, rsc->bo, view->offset, view->texconst4, 0);
			} else {
				OUT_RING(ring, 0x00000000);
			}
			OUT_RING(ring, 0x00000000);
			OUT_RING(ring, 0x00000000);
			OUT_RING(ring, 0x00000000);
		}

		for (i = 0; i < v->astc_srgb.count; i++) {
			static const struct fd4_pipe_sampler_view dummy_view = {};
			const struct fd4_pipe_sampler_view *view;
			unsigned idx = v->astc_srgb.orig_idx[i];

			view = tex->textures[idx] ?
					fd4_pipe_sampler_view(tex->textures[idx]) :
					&dummy_view;

			debug_assert(view->texconst0 & A4XX_TEX_CONST_0_SRGB);

			OUT_RING(ring, view->texconst0 & ~A4XX_TEX_CONST_0_SRGB);
			OUT_RING(ring, view->texconst1);
			OUT_RING(ring, view->texconst2);
			OUT_RING(ring, view->texconst3);
			if (view->base.texture) {
				struct fd_resource *rsc = fd_resource(view->base.texture);
				OUT_RELOC(ring, rsc->bo, view->offset, view->texconst4, 0);
			} else {
				OUT_RING(ring, 0x00000000);
			}
			OUT_RING(ring, 0x00000000);
			OUT_RING(ring, 0x00000000);
			OUT_RING(ring, 0x00000000);
		}
	} else {
		debug_assert(v->astc_srgb.count == 0);
	}

	if (needs_border) {
		unsigned off;
		void *ptr;

		u_upload_alloc(fd4_ctx->border_color_uploader,
				0, BORDER_COLOR_UPLOAD_SIZE,
				BORDER_COLOR_UPLOAD_SIZE, &off,
				&fd4_ctx->border_color_buf,
				&ptr);

		fd_setup_border_colors(tex, ptr, 0);
		OUT_PKT0(ring, bcolor_reg[sb], 1);
		OUT_RELOC(ring, fd_resource(fd4_ctx->border_color_buf)->bo, off, 0, 0);

		u_upload_unmap(fd4_ctx->border_color_uploader);
	}
}

/* emit texture state for mem->gmem restore operation.. eventually it would
 * be good to get rid of this and use normal CSO/etc state for more of these
 * special cases..
 */
void
fd4_emit_gmem_restore_tex(struct fd_ringbuffer *ring, unsigned nr_bufs,
		struct pipe_surface **bufs)
{
	unsigned char mrt_comp[A4XX_MAX_RENDER_TARGETS];
	int i;

	for (i = 0; i < A4XX_MAX_RENDER_TARGETS; i++) {
		mrt_comp[i] = (i < nr_bufs) ? 0xf : 0;
	}

	/* output sampler state: */
	OUT_PKT3(ring, CP_LOAD_STATE, 2 + (2 * nr_bufs));
	OUT_RING(ring, CP_LOAD_STATE_0_DST_OFF(0) |
			CP_LOAD_STATE_0_STATE_SRC(SS_DIRECT) |
			CP_LOAD_STATE_0_STATE_BLOCK(SB_FRAG_TEX) |
			CP_LOAD_STATE_0_NUM_UNIT(nr_bufs));
	OUT_RING(ring, CP_LOAD_STATE_1_STATE_TYPE(ST_SHADER) |
			CP_LOAD_STATE_1_EXT_SRC_ADDR(0));
	for (i = 0; i < nr_bufs; i++) {
		OUT_RING(ring, A4XX_TEX_SAMP_0_XY_MAG(A4XX_TEX_NEAREST) |
				A4XX_TEX_SAMP_0_XY_MIN(A4XX_TEX_NEAREST) |
				A4XX_TEX_SAMP_0_WRAP_S(A4XX_TEX_CLAMP_TO_EDGE) |
				A4XX_TEX_SAMP_0_WRAP_T(A4XX_TEX_CLAMP_TO_EDGE) |
				A4XX_TEX_SAMP_0_WRAP_R(A4XX_TEX_REPEAT));
		OUT_RING(ring, 0x00000000);
	}

	/* emit texture state: */
	OUT_PKT3(ring, CP_LOAD_STATE, 2 + (8 * nr_bufs));
	OUT_RING(ring, CP_LOAD_STATE_0_DST_OFF(0) |
			CP_LOAD_STATE_0_STATE_SRC(SS_DIRECT) |
			CP_LOAD_STATE_0_STATE_BLOCK(SB_FRAG_TEX) |
			CP_LOAD_STATE_0_NUM_UNIT(nr_bufs));
	OUT_RING(ring, CP_LOAD_STATE_1_STATE_TYPE(ST_CONSTANTS) |
			CP_LOAD_STATE_1_EXT_SRC_ADDR(0));
	for (i = 0; i < nr_bufs; i++) {
		if (bufs[i]) {
			struct fd_resource *rsc = fd_resource(bufs[i]->texture);
			enum pipe_format format = fd4_gmem_restore_format(bufs[i]->format);

			/* The restore blit_zs shader expects stencil in sampler 0,
			 * and depth in sampler 1
			 */
			if (rsc->stencil && (i == 0)) {
				rsc = rsc->stencil;
				format = fd4_gmem_restore_format(rsc->base.b.format);
			}

			/* note: PIPE_BUFFER disallowed for surfaces */
			unsigned lvl = bufs[i]->u.tex.level;
			struct fd_resource_slice *slice = fd_resource_slice(rsc, lvl);
			unsigned offset = fd_resource_offset(rsc, lvl, bufs[i]->u.tex.first_layer);

			/* z32 restore is accomplished using depth write.  If there is
			 * no stencil component (ie. PIPE_FORMAT_Z32_FLOAT_S8X24_UINT)
			 * then no render target:
			 *
			 * (The same applies for z32_s8x24, since for stencil sampler
			 * state the above 'if' will replace 'format' with s8)
			 */
			if ((format == PIPE_FORMAT_Z32_FLOAT) ||
					(format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT))
				mrt_comp[i] = 0;

			debug_assert(bufs[i]->u.tex.first_layer == bufs[i]->u.tex.last_layer);

			OUT_RING(ring, A4XX_TEX_CONST_0_FMT(fd4_pipe2tex(format)) |
					A4XX_TEX_CONST_0_TYPE(A4XX_TEX_2D) |
					fd4_tex_swiz(format,  PIPE_SWIZZLE_X, PIPE_SWIZZLE_Y,
							PIPE_SWIZZLE_Z, PIPE_SWIZZLE_W));
			OUT_RING(ring, A4XX_TEX_CONST_1_WIDTH(bufs[i]->width) |
					A4XX_TEX_CONST_1_HEIGHT(bufs[i]->height));
			OUT_RING(ring, A4XX_TEX_CONST_2_PITCH(slice->pitch * rsc->cpp) |
					A4XX_TEX_CONST_2_FETCHSIZE(fd4_pipe2fetchsize(format)));
			OUT_RING(ring, 0x00000000);
			OUT_RELOC(ring, rsc->bo, offset, 0, 0);
			OUT_RING(ring, 0x00000000);
			OUT_RING(ring, 0x00000000);
			OUT_RING(ring, 0x00000000);
		} else {
			OUT_RING(ring, A4XX_TEX_CONST_0_FMT(0) |
					A4XX_TEX_CONST_0_TYPE(A4XX_TEX_2D) |
					A4XX_TEX_CONST_0_SWIZ_X(A4XX_TEX_ONE) |
					A4XX_TEX_CONST_0_SWIZ_Y(A4XX_TEX_ONE) |
					A4XX_TEX_CONST_0_SWIZ_Z(A4XX_TEX_ONE) |
					A4XX_TEX_CONST_0_SWIZ_W(A4XX_TEX_ONE));
			OUT_RING(ring, A4XX_TEX_CONST_1_WIDTH(0) |
					A4XX_TEX_CONST_1_HEIGHT(0));
			OUT_RING(ring, A4XX_TEX_CONST_2_PITCH(0));
			OUT_RING(ring, 0x00000000);
			OUT_RING(ring, 0x00000000);
			OUT_RING(ring, 0x00000000);
			OUT_RING(ring, 0x00000000);
			OUT_RING(ring, 0x00000000);
		}
	}

	OUT_PKT0(ring, REG_A4XX_RB_RENDER_COMPONENTS, 1);
	OUT_RING(ring, A4XX_RB_RENDER_COMPONENTS_RT0(mrt_comp[0]) |
			A4XX_RB_RENDER_COMPONENTS_RT1(mrt_comp[1]) |
			A4XX_RB_RENDER_COMPONENTS_RT2(mrt_comp[2]) |
			A4XX_RB_RENDER_COMPONENTS_RT3(mrt_comp[3]) |
			A4XX_RB_RENDER_COMPONENTS_RT4(mrt_comp[4]) |
			A4XX_RB_RENDER_COMPONENTS_RT5(mrt_comp[5]) |
			A4XX_RB_RENDER_COMPONENTS_RT6(mrt_comp[6]) |
			A4XX_RB_RENDER_COMPONENTS_RT7(mrt_comp[7]));
}

void
fd4_emit_vertex_bufs(struct fd_ringbuffer *ring, struct fd4_emit *emit)
{
	int32_t i, j, last = -1;
	uint32_t total_in = 0;
	const struct fd_vertex_state *vtx = emit->vtx;
	const struct ir3_shader_variant *vp = fd4_emit_get_vp(emit);
	unsigned vertex_regid = regid(63, 0);
	unsigned instance_regid = regid(63, 0);
	unsigned vtxcnt_regid = regid(63, 0);

	/* Note that sysvals come *after* normal inputs: */
	for (i = 0; i < vp->inputs_count; i++) {
		if (!vp->inputs[i].compmask)
			continue;
		if (vp->inputs[i].sysval) {
			switch(vp->inputs[i].slot) {
			case SYSTEM_VALUE_BASE_VERTEX:
				/* handled elsewhere */
				break;
			case SYSTEM_VALUE_VERTEX_ID_ZERO_BASE:
				vertex_regid = vp->inputs[i].regid;
				break;
			case SYSTEM_VALUE_INSTANCE_ID:
				instance_regid = vp->inputs[i].regid;
				break;
			case SYSTEM_VALUE_VERTEX_CNT:
				vtxcnt_regid = vp->inputs[i].regid;
				break;
			default:
				unreachable("invalid system value");
				break;
			}
		} else if (i < vtx->vtx->num_elements) {
			last = i;
		}
	}

	for (i = 0, j = 0; i <= last; i++) {
		assert(!vp->inputs[i].sysval);
		if (vp->inputs[i].compmask) {
			struct pipe_vertex_element *elem = &vtx->vtx->pipe[i];
			const struct pipe_vertex_buffer *vb =
					&vtx->vertexbuf.vb[elem->vertex_buffer_index];
			struct fd_resource *rsc = fd_resource(vb->buffer);
			enum pipe_format pfmt = elem->src_format;
			enum a4xx_vtx_fmt fmt = fd4_pipe2vtx(pfmt);
			bool switchnext = (i != last) ||
					(vertex_regid != regid(63, 0)) ||
					(instance_regid != regid(63, 0)) ||
					(vtxcnt_regid != regid(63, 0));
			bool isint = util_format_is_pure_integer(pfmt);
			uint32_t fs = util_format_get_blocksize(pfmt);
			uint32_t off = vb->buffer_offset + elem->src_offset;
			uint32_t size = fd_bo_size(rsc->bo) - off;
			debug_assert(fmt != ~0);

			OUT_PKT0(ring, REG_A4XX_VFD_FETCH(j), 4);
			OUT_RING(ring, A4XX_VFD_FETCH_INSTR_0_FETCHSIZE(fs - 1) |
					A4XX_VFD_FETCH_INSTR_0_BUFSTRIDE(vb->stride) |
					COND(elem->instance_divisor, A4XX_VFD_FETCH_INSTR_0_INSTANCED) |
					COND(switchnext, A4XX_VFD_FETCH_INSTR_0_SWITCHNEXT));
			OUT_RELOC(ring, rsc->bo, off, 0, 0);
			OUT_RING(ring, A4XX_VFD_FETCH_INSTR_2_SIZE(size));
			OUT_RING(ring, A4XX_VFD_FETCH_INSTR_3_STEPRATE(MAX2(1, elem->instance_divisor)));

			OUT_PKT0(ring, REG_A4XX_VFD_DECODE_INSTR(j), 1);
			OUT_RING(ring, A4XX_VFD_DECODE_INSTR_CONSTFILL |
					A4XX_VFD_DECODE_INSTR_WRITEMASK(vp->inputs[i].compmask) |
					A4XX_VFD_DECODE_INSTR_FORMAT(fmt) |
					A4XX_VFD_DECODE_INSTR_SWAP(fd4_pipe2swap(pfmt)) |
					A4XX_VFD_DECODE_INSTR_REGID(vp->inputs[i].regid) |
					A4XX_VFD_DECODE_INSTR_SHIFTCNT(fs) |
					A4XX_VFD_DECODE_INSTR_LASTCOMPVALID |
					COND(isint, A4XX_VFD_DECODE_INSTR_INT) |
					COND(switchnext, A4XX_VFD_DECODE_INSTR_SWITCHNEXT));

			total_in += vp->inputs[i].ncomp;
			j++;
		}
	}

	/* hw doesn't like to be configured for zero vbo's, it seems: */
	if (last < 0) {
		/* just recycle the shader bo, we just need to point to *something*
		 * valid:
		 */
		struct fd_bo *dummy_vbo = vp->bo;
		bool switchnext = (vertex_regid != regid(63, 0)) ||
				(instance_regid != regid(63, 0)) ||
				(vtxcnt_regid != regid(63, 0));

		OUT_PKT0(ring, REG_A4XX_VFD_FETCH(0), 4);
		OUT_RING(ring, A4XX_VFD_FETCH_INSTR_0_FETCHSIZE(0) |
				A4XX_VFD_FETCH_INSTR_0_BUFSTRIDE(0) |
				COND(switchnext, A4XX_VFD_FETCH_INSTR_0_SWITCHNEXT));
		OUT_RELOC(ring, dummy_vbo, 0, 0, 0);
		OUT_RING(ring, A4XX_VFD_FETCH_INSTR_2_SIZE(1));
		OUT_RING(ring, A4XX_VFD_FETCH_INSTR_3_STEPRATE(1));

		OUT_PKT0(ring, REG_A4XX_VFD_DECODE_INSTR(0), 1);
		OUT_RING(ring, A4XX_VFD_DECODE_INSTR_CONSTFILL |
				A4XX_VFD_DECODE_INSTR_WRITEMASK(0x1) |
				A4XX_VFD_DECODE_INSTR_FORMAT(VFMT4_8_UNORM) |
				A4XX_VFD_DECODE_INSTR_SWAP(XYZW) |
				A4XX_VFD_DECODE_INSTR_REGID(regid(0,0)) |
				A4XX_VFD_DECODE_INSTR_SHIFTCNT(1) |
				A4XX_VFD_DECODE_INSTR_LASTCOMPVALID |
				COND(switchnext, A4XX_VFD_DECODE_INSTR_SWITCHNEXT));

		total_in = 1;
		j = 1;
	}

	OUT_PKT0(ring, REG_A4XX_VFD_CONTROL_0, 5);
	OUT_RING(ring, A4XX_VFD_CONTROL_0_TOTALATTRTOVS(total_in) |
			0xa0000 | /* XXX */
			A4XX_VFD_CONTROL_0_STRMDECINSTRCNT(j) |
			A4XX_VFD_CONTROL_0_STRMFETCHINSTRCNT(j));
	OUT_RING(ring, A4XX_VFD_CONTROL_1_MAXSTORAGE(129) | // XXX
			A4XX_VFD_CONTROL_1_REGID4VTX(vertex_regid) |
			A4XX_VFD_CONTROL_1_REGID4INST(instance_regid));
	OUT_RING(ring, 0x00000000);   /* XXX VFD_CONTROL_2 */
	OUT_RING(ring, A4XX_VFD_CONTROL_3_REGID_VTXCNT(vtxcnt_regid));
	OUT_RING(ring, 0x00000000);   /* XXX VFD_CONTROL_4 */

	/* cache invalidate, otherwise vertex fetch could see
	 * stale vbo contents:
	 */
	OUT_PKT0(ring, REG_A4XX_UCHE_INVALIDATE0, 2);
	OUT_RING(ring, 0x00000000);
	OUT_RING(ring, 0x00000012);
}

void
fd4_emit_state(struct fd_context *ctx, struct fd_ringbuffer *ring,
		struct fd4_emit *emit)
{
	const struct ir3_shader_variant *vp = fd4_emit_get_vp(emit);
	const struct ir3_shader_variant *fp = fd4_emit_get_fp(emit);
	uint32_t dirty = emit->dirty;

	emit_marker(ring, 5);

	if ((dirty & FD_DIRTY_FRAMEBUFFER) && !emit->key.binning_pass) {
		struct pipe_framebuffer_state *pfb = &ctx->batch->framebuffer;
		unsigned char mrt_comp[A4XX_MAX_RENDER_TARGETS] = {0};

		for (unsigned i = 0; i < A4XX_MAX_RENDER_TARGETS; i++) {
			mrt_comp[i] = ((i < pfb->nr_cbufs) && pfb->cbufs[i]) ? 0xf : 0;
		}

		OUT_PKT0(ring, REG_A4XX_RB_RENDER_COMPONENTS, 1);
		OUT_RING(ring, A4XX_RB_RENDER_COMPONENTS_RT0(mrt_comp[0]) |
				A4XX_RB_RENDER_COMPONENTS_RT1(mrt_comp[1]) |
				A4XX_RB_RENDER_COMPONENTS_RT2(mrt_comp[2]) |
				A4XX_RB_RENDER_COMPONENTS_RT3(mrt_comp[3]) |
				A4XX_RB_RENDER_COMPONENTS_RT4(mrt_comp[4]) |
				A4XX_RB_RENDER_COMPONENTS_RT5(mrt_comp[5]) |
				A4XX_RB_RENDER_COMPONENTS_RT6(mrt_comp[6]) |
				A4XX_RB_RENDER_COMPONENTS_RT7(mrt_comp[7]));
	}

	if (dirty & (FD_DIRTY_ZSA | FD_DIRTY_FRAMEBUFFER)) {
		struct fd4_zsa_stateobj *zsa = fd4_zsa_stateobj(ctx->zsa);
		struct pipe_framebuffer_state *pfb = &ctx->batch->framebuffer;
		uint32_t rb_alpha_control = zsa->rb_alpha_control;

		if (util_format_is_pure_integer(pipe_surface_format(pfb->cbufs[0])))
			rb_alpha_control &= ~A4XX_RB_ALPHA_CONTROL_ALPHA_TEST;

		OUT_PKT0(ring, REG_A4XX_RB_ALPHA_CONTROL, 1);
		OUT_RING(ring, rb_alpha_control);

		OUT_PKT0(ring, REG_A4XX_RB_STENCIL_CONTROL, 2);
		OUT_RING(ring, zsa->rb_stencil_control);
		OUT_RING(ring, zsa->rb_stencil_control2);
	}

	if (dirty & (FD_DIRTY_ZSA | FD_DIRTY_STENCIL_REF)) {
		struct fd4_zsa_stateobj *zsa = fd4_zsa_stateobj(ctx->zsa);
		struct pipe_stencil_ref *sr = &ctx->stencil_ref;

		OUT_PKT0(ring, REG_A4XX_RB_STENCILREFMASK, 2);
		OUT_RING(ring, zsa->rb_stencilrefmask |
				A4XX_RB_STENCILREFMASK_STENCILREF(sr->ref_value[0]));
		OUT_RING(ring, zsa->rb_stencilrefmask_bf |
				A4XX_RB_STENCILREFMASK_BF_STENCILREF(sr->ref_value[1]));
	}

	if (dirty & (FD_DIRTY_ZSA | FD_DIRTY_RASTERIZER | FD_DIRTY_PROG)) {
		struct fd4_zsa_stateobj *zsa = fd4_zsa_stateobj(ctx->zsa);
		bool fragz = fp->has_kill | fp->writes_pos;
		bool clamp = !ctx->rasterizer->depth_clip;

		OUT_PKT0(ring, REG_A4XX_RB_DEPTH_CONTROL, 1);
		OUT_RING(ring, zsa->rb_depth_control |
				COND(clamp, A4XX_RB_DEPTH_CONTROL_Z_CLAMP_ENABLE) |
				COND(fragz, A4XX_RB_DEPTH_CONTROL_EARLY_Z_DISABLE) |
				COND(fragz && fp->frag_coord, A4XX_RB_DEPTH_CONTROL_FORCE_FRAGZ_TO_FS));

		/* maybe this register/bitfield needs a better name.. this
		 * appears to be just disabling early-z
		 */
		OUT_PKT0(ring, REG_A4XX_GRAS_ALPHA_CONTROL, 1);
		OUT_RING(ring, zsa->gras_alpha_control |
				COND(fragz, A4XX_GRAS_ALPHA_CONTROL_ALPHA_TEST_ENABLE) |
				COND(fragz && fp->frag_coord, A4XX_GRAS_ALPHA_CONTROL_FORCE_FRAGZ_TO_FS));
	}

	if (dirty & FD_DIRTY_RASTERIZER) {
		struct fd4_rasterizer_stateobj *rasterizer =
				fd4_rasterizer_stateobj(ctx->rasterizer);

		OUT_PKT0(ring, REG_A4XX_GRAS_SU_MODE_CONTROL, 1);
		OUT_RING(ring, rasterizer->gras_su_mode_control |
				A4XX_GRAS_SU_MODE_CONTROL_RENDERING_PASS);

		OUT_PKT0(ring, REG_A4XX_GRAS_SU_POINT_MINMAX, 2);
		OUT_RING(ring, rasterizer->gras_su_point_minmax);
		OUT_RING(ring, rasterizer->gras_su_point_size);

		OUT_PKT0(ring, REG_A4XX_GRAS_SU_POLY_OFFSET_SCALE, 2);
		OUT_RING(ring, rasterizer->gras_su_poly_offset_scale);
		OUT_RING(ring, rasterizer->gras_su_poly_offset_offset);

		OUT_PKT0(ring, REG_A4XX_GRAS_CL_CLIP_CNTL, 1);
		OUT_RING(ring, rasterizer->gras_cl_clip_cntl);
	}

	/* NOTE: since primitive_restart is not actually part of any
	 * state object, we need to make sure that we always emit
	 * PRIM_VTX_CNTL.. either that or be more clever and detect
	 * when it changes.
	 */
	if (emit->info) {
		const struct pipe_draw_info *info = emit->info;
		struct fd4_rasterizer_stateobj *rast =
			fd4_rasterizer_stateobj(ctx->rasterizer);
		uint32_t val = rast->pc_prim_vtx_cntl;

		if (info->indexed && info->primitive_restart)
			val |= A4XX_PC_PRIM_VTX_CNTL_PRIMITIVE_RESTART;

		val |= COND(vp->writes_psize, A4XX_PC_PRIM_VTX_CNTL_PSIZE);

		if (fp->total_in > 0) {
			uint32_t varout = align(fp->total_in, 16) / 16;
			if (varout > 1)
				varout = align(varout, 2);
			val |= A4XX_PC_PRIM_VTX_CNTL_VAROUT(varout);
		}

		OUT_PKT0(ring, REG_A4XX_PC_PRIM_VTX_CNTL, 2);
		OUT_RING(ring, val);
		OUT_RING(ring, rast->pc_prim_vtx_cntl2);
	}

	if (dirty & FD_DIRTY_SCISSOR) {
		struct pipe_scissor_state *scissor = fd_context_get_scissor(ctx);

		OUT_PKT0(ring, REG_A4XX_GRAS_SC_WINDOW_SCISSOR_BR, 2);
		OUT_RING(ring, A4XX_GRAS_SC_WINDOW_SCISSOR_BR_X(scissor->maxx - 1) |
				A4XX_GRAS_SC_WINDOW_SCISSOR_BR_Y(scissor->maxy - 1));
		OUT_RING(ring, A4XX_GRAS_SC_WINDOW_SCISSOR_TL_X(scissor->minx) |
				A4XX_GRAS_SC_WINDOW_SCISSOR_TL_Y(scissor->miny));

		ctx->batch->max_scissor.minx = MIN2(ctx->batch->max_scissor.minx, scissor->minx);
		ctx->batch->max_scissor.miny = MIN2(ctx->batch->max_scissor.miny, scissor->miny);
		ctx->batch->max_scissor.maxx = MAX2(ctx->batch->max_scissor.maxx, scissor->maxx);
		ctx->batch->max_scissor.maxy = MAX2(ctx->batch->max_scissor.maxy, scissor->maxy);
	}

	if (dirty & FD_DIRTY_VIEWPORT) {
		fd_wfi(ctx->batch, ring);
		OUT_PKT0(ring, REG_A4XX_GRAS_CL_VPORT_XOFFSET_0, 6);
		OUT_RING(ring, A4XX_GRAS_CL_VPORT_XOFFSET_0(ctx->viewport.translate[0]));
		OUT_RING(ring, A4XX_GRAS_CL_VPORT_XSCALE_0(ctx->viewport.scale[0]));
		OUT_RING(ring, A4XX_GRAS_CL_VPORT_YOFFSET_0(ctx->viewport.translate[1]));
		OUT_RING(ring, A4XX_GRAS_CL_VPORT_YSCALE_0(ctx->viewport.scale[1]));
		OUT_RING(ring, A4XX_GRAS_CL_VPORT_ZOFFSET_0(ctx->viewport.translate[2]));
		OUT_RING(ring, A4XX_GRAS_CL_VPORT_ZSCALE_0(ctx->viewport.scale[2]));
	}

	if (dirty & (FD_DIRTY_VIEWPORT | FD_DIRTY_RASTERIZER | FD_DIRTY_FRAMEBUFFER)) {
		float zmin, zmax;
		int depth = 24;
		if (ctx->batch->framebuffer.zsbuf) {
			depth = util_format_get_component_bits(
					pipe_surface_format(ctx->batch->framebuffer.zsbuf),
					UTIL_FORMAT_COLORSPACE_ZS, 0);
		}
		util_viewport_zmin_zmax(&ctx->viewport, ctx->rasterizer->clip_halfz,
								&zmin, &zmax);

		OUT_PKT0(ring, REG_A4XX_RB_VPORT_Z_CLAMP(0), 2);
		if (depth == 32) {
			OUT_RING(ring, fui(zmin));
			OUT_RING(ring, fui(zmax));
		} else if (depth == 16) {
			OUT_RING(ring, (uint32_t)(zmin * 0xffff));
			OUT_RING(ring, (uint32_t)(zmax * 0xffff));
		} else {
			OUT_RING(ring, (uint32_t)(zmin * 0xffffff));
			OUT_RING(ring, (uint32_t)(zmax * 0xffffff));
		}
	}

	if (dirty & (FD_DIRTY_PROG | FD_DIRTY_FRAMEBUFFER)) {
		struct pipe_framebuffer_state *pfb = &ctx->batch->framebuffer;
		unsigned n = pfb->nr_cbufs;
		/* if we have depth/stencil, we need at least on MRT: */
		if (pfb->zsbuf)
			n = MAX2(1, n);
		fd4_program_emit(ring, emit, n, pfb->cbufs);
	}

	if (emit->prog == &ctx->prog) { /* evil hack to deal sanely with clear path */
		ir3_emit_consts(vp, ring, ctx, emit->info, dirty);
		if (!emit->key.binning_pass)
			ir3_emit_consts(fp, ring, ctx, emit->info, dirty);
	}

	if ((dirty & FD_DIRTY_BLEND)) {
		struct fd4_blend_stateobj *blend = fd4_blend_stateobj(ctx->blend);
		uint32_t i;

		for (i = 0; i < A4XX_MAX_RENDER_TARGETS; i++) {
			enum pipe_format format = pipe_surface_format(
					ctx->batch->framebuffer.cbufs[i]);
			bool is_int = util_format_is_pure_integer(format);
			bool has_alpha = util_format_has_alpha(format);
			uint32_t control = blend->rb_mrt[i].control;
			uint32_t blend_control = blend->rb_mrt[i].blend_control_alpha;

			if (is_int) {
				control &= A4XX_RB_MRT_CONTROL_COMPONENT_ENABLE__MASK;
				control |= A4XX_RB_MRT_CONTROL_ROP_CODE(ROP_COPY);
			}

			if (has_alpha) {
				blend_control |= blend->rb_mrt[i].blend_control_rgb;
			} else {
				blend_control |= blend->rb_mrt[i].blend_control_no_alpha_rgb;
				control &= ~A4XX_RB_MRT_CONTROL_BLEND2;
			}

			OUT_PKT0(ring, REG_A4XX_RB_MRT_CONTROL(i), 1);
			OUT_RING(ring, control);

			OUT_PKT0(ring, REG_A4XX_RB_MRT_BLEND_CONTROL(i), 1);
			OUT_RING(ring, blend_control);
		}

		OUT_PKT0(ring, REG_A4XX_RB_FS_OUTPUT, 1);
		OUT_RING(ring, blend->rb_fs_output |
				A4XX_RB_FS_OUTPUT_SAMPLE_MASK(0xffff));
	}

	if (dirty & FD_DIRTY_BLEND_COLOR) {
		struct pipe_blend_color *bcolor = &ctx->blend_color;

		OUT_PKT0(ring, REG_A4XX_RB_BLEND_RED, 8);
		OUT_RING(ring, A4XX_RB_BLEND_RED_FLOAT(bcolor->color[0]) |
				A4XX_RB_BLEND_RED_UINT(bcolor->color[0] * 0xff) |
				A4XX_RB_BLEND_RED_SINT(bcolor->color[0] * 0x7f));
		OUT_RING(ring, A4XX_RB_BLEND_RED_F32(bcolor->color[0]));
		OUT_RING(ring, A4XX_RB_BLEND_GREEN_FLOAT(bcolor->color[1]) |
				A4XX_RB_BLEND_GREEN_UINT(bcolor->color[1] * 0xff) |
				A4XX_RB_BLEND_GREEN_SINT(bcolor->color[1] * 0x7f));
		OUT_RING(ring, A4XX_RB_BLEND_RED_F32(bcolor->color[1]));
		OUT_RING(ring, A4XX_RB_BLEND_BLUE_FLOAT(bcolor->color[2]) |
				A4XX_RB_BLEND_BLUE_UINT(bcolor->color[2] * 0xff) |
				A4XX_RB_BLEND_BLUE_SINT(bcolor->color[2] * 0x7f));
		OUT_RING(ring, A4XX_RB_BLEND_BLUE_F32(bcolor->color[2]));
		OUT_RING(ring, A4XX_RB_BLEND_ALPHA_FLOAT(bcolor->color[3]) |
				A4XX_RB_BLEND_ALPHA_UINT(bcolor->color[3] * 0xff) |
				A4XX_RB_BLEND_ALPHA_SINT(bcolor->color[3] * 0x7f));
		OUT_RING(ring, A4XX_RB_BLEND_ALPHA_F32(bcolor->color[3]));
	}

	if (dirty & FD_DIRTY_VERTTEX) {
		if (vp->has_samp)
			emit_textures(ctx, ring, SB_VERT_TEX, &ctx->verttex, vp);
		else
			dirty &= ~FD_DIRTY_VERTTEX;
	}

	if (dirty & FD_DIRTY_FRAGTEX) {
		if (fp->has_samp)
			emit_textures(ctx, ring, SB_FRAG_TEX, &ctx->fragtex, fp);
		else
			dirty &= ~FD_DIRTY_FRAGTEX;
	}

	ctx->dirty &= ~dirty;
}

/* emit setup at begin of new cmdstream buffer (don't rely on previous
 * state, there could have been a context switch between ioctls):
 */
void
fd4_emit_restore(struct fd_batch *batch, struct fd_ringbuffer *ring)
{
	struct fd_context *ctx = batch->ctx;
	struct fd4_context *fd4_ctx = fd4_context(ctx);

	OUT_PKT0(ring, REG_A4XX_RBBM_PERFCTR_CTL, 1);
	OUT_RING(ring, 0x00000001);

	OUT_PKT0(ring, REG_A4XX_GRAS_DEBUG_ECO_CONTROL, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_SP_MODE_CONTROL, 1);
	OUT_RING(ring, 0x00000006);

	OUT_PKT0(ring, REG_A4XX_TPL1_TP_MODE_CONTROL, 1);
	OUT_RING(ring, 0x0000003a);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_0D01, 1);
	OUT_RING(ring, 0x00000001);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_0E42, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UCHE_CACHE_WAYS_VFD, 1);
	OUT_RING(ring, 0x00000007);

	OUT_PKT0(ring, REG_A4XX_UCHE_CACHE_MODE_CONTROL, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UCHE_INVALIDATE0, 2);
	OUT_RING(ring, 0x00000000);
	OUT_RING(ring, 0x00000012);

	OUT_PKT0(ring, REG_A4XX_HLSQ_MODE_CONTROL, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_0CC5, 1);
	OUT_RING(ring, 0x00000006);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_0CC6, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_0EC2, 1);
	OUT_RING(ring, 0x00040000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_2001, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT3(ring, CP_INVALIDATE_STATE, 1);
	OUT_RING(ring, 0x00001000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_20EF, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_RB_BLEND_RED, 4);
	OUT_RING(ring, A4XX_RB_BLEND_RED_UINT(0) |
			A4XX_RB_BLEND_RED_FLOAT(0.0));
	OUT_RING(ring, A4XX_RB_BLEND_GREEN_UINT(0) |
			A4XX_RB_BLEND_GREEN_FLOAT(0.0));
	OUT_RING(ring, A4XX_RB_BLEND_BLUE_UINT(0) |
			A4XX_RB_BLEND_BLUE_FLOAT(0.0));
	OUT_RING(ring, A4XX_RB_BLEND_ALPHA_UINT(0x7fff) |
			A4XX_RB_BLEND_ALPHA_FLOAT(1.0));

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_2152, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_2153, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_2154, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_2155, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_2156, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_2157, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_21C3, 1);
	OUT_RING(ring, 0x0000001d);

	OUT_PKT0(ring, REG_A4XX_PC_GS_PARAM, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_21E6, 1);
	OUT_RING(ring, 0x00000001);

	OUT_PKT0(ring, REG_A4XX_PC_HS_PARAM, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_UNKNOWN_22D7, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_TPL1_TP_TEX_OFFSET, 1);
	OUT_RING(ring, 0x00000000);

	OUT_PKT0(ring, REG_A4XX_TPL1_TP_TEX_COUNT, 1);
	OUT_RING(ring, A4XX_TPL1_TP_TEX_COUNT_VS(16) |
			A4XX_TPL1_TP_TEX_COUNT_HS(0) |
			A4XX_TPL1_TP_TEX_COUNT_DS(0) |
			A4XX_TPL1_TP_TEX_COUNT_GS(0));

	OUT_PKT0(ring, REG_A4XX_TPL1_TP_FS_TEX_COUNT, 1);
	OUT_RING(ring, 16);

	/* we don't use this yet.. probably best to disable.. */
	OUT_PKT3(ring, CP_SET_DRAW_STATE, 2);
	OUT_RING(ring, CP_SET_DRAW_STATE_0_COUNT(0) |
			CP_SET_DRAW_STATE_0_DISABLE_ALL_GROUPS |
			CP_SET_DRAW_STATE_0_GROUP_ID(0));
	OUT_RING(ring, CP_SET_DRAW_STATE_1_ADDR(0));

	OUT_PKT0(ring, REG_A4XX_SP_VS_PVT_MEM_PARAM, 2);
	OUT_RING(ring, 0x08000001);                  /* SP_VS_PVT_MEM_PARAM */
	OUT_RELOC(ring, fd4_ctx->vs_pvt_mem, 0,0,0); /* SP_VS_PVT_MEM_ADDR */

	OUT_PKT0(ring, REG_A4XX_SP_FS_PVT_MEM_PARAM, 2);
	OUT_RING(ring, 0x08000001);                  /* SP_FS_PVT_MEM_PARAM */
	OUT_RELOC(ring, fd4_ctx->fs_pvt_mem, 0,0,0); /* SP_FS_PVT_MEM_ADDR */

	OUT_PKT0(ring, REG_A4XX_GRAS_SC_CONTROL, 1);
	OUT_RING(ring, A4XX_GRAS_SC_CONTROL_RENDER_MODE(RB_RENDERING_PASS) |
			A4XX_GRAS_SC_CONTROL_MSAA_DISABLE |
			A4XX_GRAS_SC_CONTROL_MSAA_SAMPLES(MSAA_ONE) |
			A4XX_GRAS_SC_CONTROL_RASTER_MODE(0));

	OUT_PKT0(ring, REG_A4XX_RB_MSAA_CONTROL, 1);
	OUT_RING(ring, A4XX_RB_MSAA_CONTROL_DISABLE |
			A4XX_RB_MSAA_CONTROL_SAMPLES(MSAA_ONE));

	OUT_PKT0(ring, REG_A4XX_GRAS_CL_GB_CLIP_ADJ, 1);
	OUT_RING(ring, A4XX_GRAS_CL_GB_CLIP_ADJ_HORZ(0) |
			A4XX_GRAS_CL_GB_CLIP_ADJ_VERT(0));

	OUT_PKT0(ring, REG_A4XX_RB_ALPHA_CONTROL, 1);
	OUT_RING(ring, A4XX_RB_ALPHA_CONTROL_ALPHA_TEST_FUNC(FUNC_ALWAYS));

	OUT_PKT0(ring, REG_A4XX_RB_FS_OUTPUT, 1);
	OUT_RING(ring, A4XX_RB_FS_OUTPUT_SAMPLE_MASK(0xffff));

	OUT_PKT0(ring, REG_A4XX_GRAS_CLEAR_CNTL, 1);
	OUT_RING(ring, A4XX_GRAS_CLEAR_CNTL_NOT_FASTCLEAR);

	OUT_PKT0(ring, REG_A4XX_GRAS_ALPHA_CONTROL, 1);
	OUT_RING(ring, 0x0);

	fd_hw_query_enable(batch, ring);
}

static void
fd4_emit_ib(struct fd_ringbuffer *ring, struct fd_ringbuffer *target)
{
	__OUT_IB(ring, true, target);
}

void
fd4_emit_init(struct pipe_context *pctx)
{
	struct fd_context *ctx = fd_context(pctx);
	ctx->emit_const = fd4_emit_const;
	ctx->emit_const_bo = fd4_emit_const_bo;
	ctx->emit_ib = fd4_emit_ib;
}
