r600g: make framebuffer atom rely on dual src blend state.

[mesa.git] / src / gallium / drivers / r600 / r600_state_common.c

/*
 * Copyright 2010 Red Hat Inc.
 *           2010 Jerome Glisse
 *
 * 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
 * on the rights to use, copy, modify, merge, publish, 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. IN NO EVENT SHALL
 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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: Dave Airlie <airlied@redhat.com>
 *          Jerome Glisse <jglisse@redhat.com>
 */
#include "r600_formats.h"
#include "r600_shader.h"
#include "r600d.h"

#include "util/u_format_s3tc.h"
#include "util/u_index_modify.h"
#include "util/u_memory.h"
#include "util/u_upload_mgr.h"
#include "util/u_math.h"
#include "tgsi/tgsi_parse.h"
#include "tgsi/tgsi_scan.h"
#include "tgsi/tgsi_ureg.h"

void r600_init_command_buffer(struct r600_command_buffer *cb, unsigned num_dw)
{
        assert(!cb->buf);
        cb->buf = CALLOC(1, 4 * num_dw);
        cb->max_num_dw = num_dw;
}

void r600_release_command_buffer(struct r600_command_buffer *cb)
{
        FREE(cb->buf);
}

void r600_add_atom(struct r600_context *rctx,
                   struct r600_atom *atom,
                   unsigned id)
{
        assert(id < R600_NUM_ATOMS);
        assert(rctx->atoms[id] == NULL);
        rctx->atoms[id] = atom;
        atom->id = id;
}

void r600_init_atom(struct r600_context *rctx,
                    struct r600_atom *atom,
                    unsigned id,
                    void (*emit)(struct r600_context *ctx, struct r600_atom *state),
                    unsigned num_dw)
{
        atom->emit = (void*)emit;
        atom->num_dw = num_dw;
        r600_add_atom(rctx, atom, id);
}

void r600_emit_cso_state(struct r600_context *rctx, struct r600_atom *atom)
{
        r600_emit_command_buffer(rctx->b.gfx.cs, ((struct r600_cso_state*)atom)->cb);
}

void r600_emit_alphatest_state(struct r600_context *rctx, struct r600_atom *atom)
{
        struct radeon_winsys_cs *cs = rctx->b.gfx.cs;
        struct r600_alphatest_state *a = (struct r600_alphatest_state*)atom;
        unsigned alpha_ref = a->sx_alpha_ref;

        if (rctx->b.chip_class >= EVERGREEN && a->cb0_export_16bpc) {
                alpha_ref &= ~0x1FFF;
        }

        radeon_set_context_reg(cs, R_028410_SX_ALPHA_TEST_CONTROL,
                               a->sx_alpha_test_control |
                               S_028410_ALPHA_TEST_BYPASS(a->bypass));
        radeon_set_context_reg(cs, R_028438_SX_ALPHA_REF, alpha_ref);
}

static void r600_texture_barrier(struct pipe_context *ctx, unsigned flags)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        rctx->b.flags |= R600_CONTEXT_INV_TEX_CACHE |
                       R600_CONTEXT_FLUSH_AND_INV_CB |
                       R600_CONTEXT_FLUSH_AND_INV |
                       R600_CONTEXT_WAIT_3D_IDLE;
}

static unsigned r600_conv_pipe_prim(unsigned prim)
{
        static const unsigned prim_conv[] = {
                [PIPE_PRIM_POINTS]                      = V_008958_DI_PT_POINTLIST,
                [PIPE_PRIM_LINES]                       = V_008958_DI_PT_LINELIST,
                [PIPE_PRIM_LINE_LOOP]                   = V_008958_DI_PT_LINELOOP,
                [PIPE_PRIM_LINE_STRIP]                  = V_008958_DI_PT_LINESTRIP,
                [PIPE_PRIM_TRIANGLES]                   = V_008958_DI_PT_TRILIST,
                [PIPE_PRIM_TRIANGLE_STRIP]              = V_008958_DI_PT_TRISTRIP,
                [PIPE_PRIM_TRIANGLE_FAN]                = V_008958_DI_PT_TRIFAN,
                [PIPE_PRIM_QUADS]                       = V_008958_DI_PT_QUADLIST,
                [PIPE_PRIM_QUAD_STRIP]                  = V_008958_DI_PT_QUADSTRIP,
                [PIPE_PRIM_POLYGON]                     = V_008958_DI_PT_POLYGON,
                [PIPE_PRIM_LINES_ADJACENCY]             = V_008958_DI_PT_LINELIST_ADJ,
                [PIPE_PRIM_LINE_STRIP_ADJACENCY]        = V_008958_DI_PT_LINESTRIP_ADJ,
                [PIPE_PRIM_TRIANGLES_ADJACENCY]         = V_008958_DI_PT_TRILIST_ADJ,
                [PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY]    = V_008958_DI_PT_TRISTRIP_ADJ,
                [PIPE_PRIM_PATCHES]                     = V_008958_DI_PT_PATCH,
                [R600_PRIM_RECTANGLE_LIST]              = V_008958_DI_PT_RECTLIST
        };
        assert(prim < ARRAY_SIZE(prim_conv));
        return prim_conv[prim];
}

unsigned r600_conv_prim_to_gs_out(unsigned mode)
{
        static const int prim_conv[] = {
                [PIPE_PRIM_POINTS]                      = V_028A6C_OUTPRIM_TYPE_POINTLIST,
                [PIPE_PRIM_LINES]                       = V_028A6C_OUTPRIM_TYPE_LINESTRIP,
                [PIPE_PRIM_LINE_LOOP]                   = V_028A6C_OUTPRIM_TYPE_LINESTRIP,
                [PIPE_PRIM_LINE_STRIP]                  = V_028A6C_OUTPRIM_TYPE_LINESTRIP,
                [PIPE_PRIM_TRIANGLES]                   = V_028A6C_OUTPRIM_TYPE_TRISTRIP,
                [PIPE_PRIM_TRIANGLE_STRIP]              = V_028A6C_OUTPRIM_TYPE_TRISTRIP,
                [PIPE_PRIM_TRIANGLE_FAN]                = V_028A6C_OUTPRIM_TYPE_TRISTRIP,
                [PIPE_PRIM_QUADS]                       = V_028A6C_OUTPRIM_TYPE_TRISTRIP,
                [PIPE_PRIM_QUAD_STRIP]                  = V_028A6C_OUTPRIM_TYPE_TRISTRIP,
                [PIPE_PRIM_POLYGON]                     = V_028A6C_OUTPRIM_TYPE_TRISTRIP,
                [PIPE_PRIM_LINES_ADJACENCY]             = V_028A6C_OUTPRIM_TYPE_LINESTRIP,
                [PIPE_PRIM_LINE_STRIP_ADJACENCY]        = V_028A6C_OUTPRIM_TYPE_LINESTRIP,
                [PIPE_PRIM_TRIANGLES_ADJACENCY]         = V_028A6C_OUTPRIM_TYPE_TRISTRIP,
                [PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY]    = V_028A6C_OUTPRIM_TYPE_TRISTRIP,
                [PIPE_PRIM_PATCHES]                     = V_028A6C_OUTPRIM_TYPE_POINTLIST,
                [R600_PRIM_RECTANGLE_LIST]              = V_028A6C_OUTPRIM_TYPE_TRISTRIP
        };
        assert(mode < ARRAY_SIZE(prim_conv));

        return prim_conv[mode];
}

/* common state between evergreen and r600 */

static void r600_bind_blend_state_internal(struct r600_context *rctx,
                struct r600_blend_state *blend, bool blend_disable)
{
        unsigned color_control;
        bool update_cb = false;

        rctx->alpha_to_one = blend->alpha_to_one;
        rctx->dual_src_blend = blend->dual_src_blend;

        if (!blend_disable) {
                r600_set_cso_state_with_cb(rctx, &rctx->blend_state, blend, &blend->buffer);
                color_control = blend->cb_color_control;
        } else {
                /* Blending is disabled. */
                r600_set_cso_state_with_cb(rctx, &rctx->blend_state, blend, &blend->buffer_no_blend);
                color_control = blend->cb_color_control_no_blend;
        }

        /* Update derived states. */
        if (rctx->cb_misc_state.blend_colormask != blend->cb_target_mask) {
                rctx->cb_misc_state.blend_colormask = blend->cb_target_mask;
                update_cb = true;
        }
        if (rctx->b.chip_class <= R700 &&
            rctx->cb_misc_state.cb_color_control != color_control) {
                rctx->cb_misc_state.cb_color_control = color_control;
                update_cb = true;
        }
        if (rctx->cb_misc_state.dual_src_blend != blend->dual_src_blend) {
                rctx->cb_misc_state.dual_src_blend = blend->dual_src_blend;
                update_cb = true;
        }
        if (update_cb) {
                r600_mark_atom_dirty(rctx, &rctx->cb_misc_state.atom);
        }
        if (rctx->framebuffer.dual_src_blend != blend->dual_src_blend) {
                rctx->framebuffer.dual_src_blend = blend->dual_src_blend;
                r600_mark_atom_dirty(rctx, &rctx->framebuffer.atom);
        }
}

static void r600_bind_blend_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_blend_state *blend = (struct r600_blend_state *)state;

        if (!blend) {
                r600_set_cso_state_with_cb(rctx, &rctx->blend_state, NULL, NULL);
                return;
        }

        r600_bind_blend_state_internal(rctx, blend, rctx->force_blend_disable);
}

static void r600_set_blend_color(struct pipe_context *ctx,
                                 const struct pipe_blend_color *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        rctx->blend_color.state = *state;
        r600_mark_atom_dirty(rctx, &rctx->blend_color.atom);
}

void r600_emit_blend_color(struct r600_context *rctx, struct r600_atom *atom)
{
        struct radeon_winsys_cs *cs = rctx->b.gfx.cs;
        struct pipe_blend_color *state = &rctx->blend_color.state;

        radeon_set_context_reg_seq(cs, R_028414_CB_BLEND_RED, 4);
        radeon_emit(cs, fui(state->color[0])); /* R_028414_CB_BLEND_RED */
        radeon_emit(cs, fui(state->color[1])); /* R_028418_CB_BLEND_GREEN */
        radeon_emit(cs, fui(state->color[2])); /* R_02841C_CB_BLEND_BLUE */
        radeon_emit(cs, fui(state->color[3])); /* R_028420_CB_BLEND_ALPHA */
}

void r600_emit_vgt_state(struct r600_context *rctx, struct r600_atom *atom)
{
        struct radeon_winsys_cs *cs = rctx->b.gfx.cs;
        struct r600_vgt_state *a = (struct r600_vgt_state *)atom;

        radeon_set_context_reg(cs, R_028A94_VGT_MULTI_PRIM_IB_RESET_EN, a->vgt_multi_prim_ib_reset_en);
        radeon_set_context_reg_seq(cs, R_028408_VGT_INDX_OFFSET, 2);
        radeon_emit(cs, a->vgt_indx_offset); /* R_028408_VGT_INDX_OFFSET */
        radeon_emit(cs, a->vgt_multi_prim_ib_reset_indx); /* R_02840C_VGT_MULTI_PRIM_IB_RESET_INDX */
        if (a->last_draw_was_indirect) {
                a->last_draw_was_indirect = false;
                radeon_set_ctl_const(cs, R_03CFF0_SQ_VTX_BASE_VTX_LOC, 0);
        }
}

static void r600_set_clip_state(struct pipe_context *ctx,
                                const struct pipe_clip_state *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        rctx->clip_state.state = *state;
        r600_mark_atom_dirty(rctx, &rctx->clip_state.atom);
        rctx->driver_consts[PIPE_SHADER_VERTEX].vs_ucp_dirty = true;
}

static void r600_set_stencil_ref(struct pipe_context *ctx,
                                 const struct r600_stencil_ref *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        rctx->stencil_ref.state = *state;
        r600_mark_atom_dirty(rctx, &rctx->stencil_ref.atom);
}

void r600_emit_stencil_ref(struct r600_context *rctx, struct r600_atom *atom)
{
        struct radeon_winsys_cs *cs = rctx->b.gfx.cs;
        struct r600_stencil_ref_state *a = (struct r600_stencil_ref_state*)atom;

        radeon_set_context_reg_seq(cs, R_028430_DB_STENCILREFMASK, 2);
        radeon_emit(cs, /* R_028430_DB_STENCILREFMASK */
                         S_028430_STENCILREF(a->state.ref_value[0]) |
                         S_028430_STENCILMASK(a->state.valuemask[0]) |
                         S_028430_STENCILWRITEMASK(a->state.writemask[0]));
        radeon_emit(cs, /* R_028434_DB_STENCILREFMASK_BF */
                         S_028434_STENCILREF_BF(a->state.ref_value[1]) |
                         S_028434_STENCILMASK_BF(a->state.valuemask[1]) |
                         S_028434_STENCILWRITEMASK_BF(a->state.writemask[1]));
}

static void r600_set_pipe_stencil_ref(struct pipe_context *ctx,
                                      const struct pipe_stencil_ref *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_dsa_state *dsa = (struct r600_dsa_state*)rctx->dsa_state.cso;
        struct r600_stencil_ref ref;

        rctx->stencil_ref.pipe_state = *state;

        if (!dsa)
                return;

        ref.ref_value[0] = state->ref_value[0];
        ref.ref_value[1] = state->ref_value[1];
        ref.valuemask[0] = dsa->valuemask[0];
        ref.valuemask[1] = dsa->valuemask[1];
        ref.writemask[0] = dsa->writemask[0];
        ref.writemask[1] = dsa->writemask[1];

        r600_set_stencil_ref(ctx, &ref);
}

static void r600_bind_dsa_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_dsa_state *dsa = state;
        struct r600_stencil_ref ref;

        if (!state) {
                r600_set_cso_state_with_cb(rctx, &rctx->dsa_state, NULL, NULL);
                return;
        }

        r600_set_cso_state_with_cb(rctx, &rctx->dsa_state, dsa, &dsa->buffer);

        ref.ref_value[0] = rctx->stencil_ref.pipe_state.ref_value[0];
        ref.ref_value[1] = rctx->stencil_ref.pipe_state.ref_value[1];
        ref.valuemask[0] = dsa->valuemask[0];
        ref.valuemask[1] = dsa->valuemask[1];
        ref.writemask[0] = dsa->writemask[0];
        ref.writemask[1] = dsa->writemask[1];
        if (rctx->zwritemask != dsa->zwritemask) {
                rctx->zwritemask = dsa->zwritemask;
                if (rctx->b.chip_class >= EVERGREEN) {
                        /* work around some issue when not writing to zbuffer
                         * we are having lockup on evergreen so do not enable
                         * hyperz when not writing zbuffer
                         */
                        r600_mark_atom_dirty(rctx, &rctx->db_misc_state.atom);
                }
        }

        r600_set_stencil_ref(ctx, &ref);

        /* Update alphatest state. */
        if (rctx->alphatest_state.sx_alpha_test_control != dsa->sx_alpha_test_control ||
            rctx->alphatest_state.sx_alpha_ref != dsa->alpha_ref) {
                rctx->alphatest_state.sx_alpha_test_control = dsa->sx_alpha_test_control;
                rctx->alphatest_state.sx_alpha_ref = dsa->alpha_ref;
                r600_mark_atom_dirty(rctx, &rctx->alphatest_state.atom);
        }
}

static void r600_bind_rs_state(struct pipe_context *ctx, void *state)
{
        struct r600_rasterizer_state *rs = (struct r600_rasterizer_state *)state;
        struct r600_context *rctx = (struct r600_context *)ctx;

        if (!state)
                return;

        rctx->rasterizer = rs;

        r600_set_cso_state_with_cb(rctx, &rctx->rasterizer_state, rs, &rs->buffer);

        if (rs->offset_enable &&
            (rs->offset_units != rctx->poly_offset_state.offset_units ||
             rs->offset_scale != rctx->poly_offset_state.offset_scale ||
             rs->offset_units_unscaled != rctx->poly_offset_state.offset_units_unscaled)) {
                rctx->poly_offset_state.offset_units = rs->offset_units;
                rctx->poly_offset_state.offset_scale = rs->offset_scale;
                rctx->poly_offset_state.offset_units_unscaled = rs->offset_units_unscaled;
                r600_mark_atom_dirty(rctx, &rctx->poly_offset_state.atom);
        }

        /* Update clip_misc_state. */
        if (rctx->clip_misc_state.pa_cl_clip_cntl != rs->pa_cl_clip_cntl ||
            rctx->clip_misc_state.clip_plane_enable != rs->clip_plane_enable) {
                rctx->clip_misc_state.pa_cl_clip_cntl = rs->pa_cl_clip_cntl;
                rctx->clip_misc_state.clip_plane_enable = rs->clip_plane_enable;
                r600_mark_atom_dirty(rctx, &rctx->clip_misc_state.atom);
        }

        r600_viewport_set_rast_deps(&rctx->b, rs->scissor_enable, rs->clip_halfz);

        /* Re-emit PA_SC_LINE_STIPPLE. */
        rctx->last_primitive_type = -1;
}

static void r600_delete_rs_state(struct pipe_context *ctx, void *state)
{
        struct r600_rasterizer_state *rs = (struct r600_rasterizer_state *)state;

        r600_release_command_buffer(&rs->buffer);
        FREE(rs);
}

static void r600_sampler_view_destroy(struct pipe_context *ctx,
                                      struct pipe_sampler_view *state)
{
        struct r600_pipe_sampler_view *view = (struct r600_pipe_sampler_view *)state;

        if (view->tex_resource->gpu_address &&
            view->tex_resource->b.b.target == PIPE_BUFFER)
                LIST_DELINIT(&view->list);

        pipe_resource_reference(&state->texture, NULL);
        FREE(view);
}

void r600_sampler_states_dirty(struct r600_context *rctx,
                               struct r600_sampler_states *state)
{
        if (state->dirty_mask) {
                if (state->dirty_mask & state->has_bordercolor_mask) {
                        rctx->b.flags |= R600_CONTEXT_WAIT_3D_IDLE;
                }
                state->atom.num_dw =
                        util_bitcount(state->dirty_mask & state->has_bordercolor_mask) * 11 +
                        util_bitcount(state->dirty_mask & ~state->has_bordercolor_mask) * 5;
                r600_mark_atom_dirty(rctx, &state->atom);
        }
}

static void r600_bind_sampler_states(struct pipe_context *pipe,
                               enum pipe_shader_type shader,
                               unsigned start,
                               unsigned count, void **states)
{
        struct r600_context *rctx = (struct r600_context *)pipe;
        struct r600_textures_info *dst = &rctx->samplers[shader];
        struct r600_pipe_sampler_state **rstates = (struct r600_pipe_sampler_state**)states;
        int seamless_cube_map = -1;
        unsigned i;
        /* This sets 1-bit for states with index >= count. */
        uint32_t disable_mask = ~((1ull << count) - 1);
        /* These are the new states set by this function. */
        uint32_t new_mask = 0;

        assert(start == 0); /* XXX fix below */

        if (!states) {
                disable_mask = ~0u;
                count = 0;
        }

        for (i = 0; i < count; i++) {
                struct r600_pipe_sampler_state *rstate = rstates[i];

                if (rstate == dst->states.states[i]) {
                        continue;
                }

                if (rstate) {
                        if (rstate->border_color_use) {
                                dst->states.has_bordercolor_mask |= 1 << i;
                        } else {
                                dst->states.has_bordercolor_mask &= ~(1 << i);
                        }
                        seamless_cube_map = rstate->seamless_cube_map;

                        new_mask |= 1 << i;
                } else {
                        disable_mask |= 1 << i;
                }
        }

        memcpy(dst->states.states, rstates, sizeof(void*) * count);
        memset(dst->states.states + count, 0, sizeof(void*) * (NUM_TEX_UNITS - count));

        dst->states.enabled_mask &= ~disable_mask;
        dst->states.dirty_mask &= dst->states.enabled_mask;
        dst->states.enabled_mask |= new_mask;
        dst->states.dirty_mask |= new_mask;
        dst->states.has_bordercolor_mask &= dst->states.enabled_mask;

        r600_sampler_states_dirty(rctx, &dst->states);

        /* Seamless cubemap state. */
        if (rctx->b.chip_class <= R700 &&
            seamless_cube_map != -1 &&
            seamless_cube_map != rctx->seamless_cube_map.enabled) {
                /* change in TA_CNTL_AUX need a pipeline flush */
                rctx->b.flags |= R600_CONTEXT_WAIT_3D_IDLE;
                rctx->seamless_cube_map.enabled = seamless_cube_map;
                r600_mark_atom_dirty(rctx, &rctx->seamless_cube_map.atom);
        }
}

static void r600_delete_sampler_state(struct pipe_context *ctx, void *state)
{
        free(state);
}

static void r600_delete_blend_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_blend_state *blend = (struct r600_blend_state*)state;

        if (rctx->blend_state.cso == state) {
                ctx->bind_blend_state(ctx, NULL);
        }

        r600_release_command_buffer(&blend->buffer);
        r600_release_command_buffer(&blend->buffer_no_blend);
        FREE(blend);
}

static void r600_delete_dsa_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_dsa_state *dsa = (struct r600_dsa_state *)state;

        if (rctx->dsa_state.cso == state) {
                ctx->bind_depth_stencil_alpha_state(ctx, NULL);
        }

        r600_release_command_buffer(&dsa->buffer);
        free(dsa);
}

static void r600_bind_vertex_elements(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        r600_set_cso_state(rctx, &rctx->vertex_fetch_shader, state);
}

static void r600_delete_vertex_elements(struct pipe_context *ctx, void *state)
{
        struct r600_fetch_shader *shader = (struct r600_fetch_shader*)state;
        r600_resource_reference(&shader->buffer, NULL);
        FREE(shader);
}

static void r600_set_index_buffer(struct pipe_context *ctx,
                           const struct pipe_index_buffer *ib)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        if (ib) {
                pipe_resource_reference(&rctx->index_buffer.buffer, ib->buffer);
                memcpy(&rctx->index_buffer, ib, sizeof(*ib));
                r600_context_add_resource_size(ctx, ib->buffer);
        } else {
                pipe_resource_reference(&rctx->index_buffer.buffer, NULL);
        }
}

void r600_vertex_buffers_dirty(struct r600_context *rctx)
{
        if (rctx->vertex_buffer_state.dirty_mask) {
                rctx->vertex_buffer_state.atom.num_dw = (rctx->b.chip_class >= EVERGREEN ? 12 : 11) *
                                               util_bitcount(rctx->vertex_buffer_state.dirty_mask);
                r600_mark_atom_dirty(rctx, &rctx->vertex_buffer_state.atom);
        }
}

static void r600_set_vertex_buffers(struct pipe_context *ctx,
                                    unsigned start_slot, unsigned count,
                                    const struct pipe_vertex_buffer *input)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_vertexbuf_state *state = &rctx->vertex_buffer_state;
        struct pipe_vertex_buffer *vb = state->vb + start_slot;
        unsigned i;
        uint32_t disable_mask = 0;
        /* These are the new buffers set by this function. */
        uint32_t new_buffer_mask = 0;

        /* Set vertex buffers. */
        if (input) {
                for (i = 0; i < count; i++) {
                        if (memcmp(&input[i], &vb[i], sizeof(struct pipe_vertex_buffer))) {
                                if (input[i].buffer) {
                                        vb[i].stride = input[i].stride;
                                        vb[i].buffer_offset = input[i].buffer_offset;
                                        pipe_resource_reference(&vb[i].buffer, input[i].buffer);
                                        new_buffer_mask |= 1 << i;
                                        r600_context_add_resource_size(ctx, input[i].buffer);
                                } else {
                                        pipe_resource_reference(&vb[i].buffer, NULL);
                                        disable_mask |= 1 << i;
                                }
                        }
                }
        } else {
                for (i = 0; i < count; i++) {
                        pipe_resource_reference(&vb[i].buffer, NULL);
                }
                disable_mask = ((1ull << count) - 1);
        }

        disable_mask <<= start_slot;
        new_buffer_mask <<= start_slot;

        rctx->vertex_buffer_state.enabled_mask &= ~disable_mask;
        rctx->vertex_buffer_state.dirty_mask &= rctx->vertex_buffer_state.enabled_mask;
        rctx->vertex_buffer_state.enabled_mask |= new_buffer_mask;
        rctx->vertex_buffer_state.dirty_mask |= new_buffer_mask;

        r600_vertex_buffers_dirty(rctx);
}

void r600_sampler_views_dirty(struct r600_context *rctx,
                              struct r600_samplerview_state *state)
{
        if (state->dirty_mask) {
                state->atom.num_dw = (rctx->b.chip_class >= EVERGREEN ? 14 : 13) *
                                     util_bitcount(state->dirty_mask);
                r600_mark_atom_dirty(rctx, &state->atom);
        }
}

static void r600_set_sampler_views(struct pipe_context *pipe,
                                   enum pipe_shader_type shader,
                                   unsigned start, unsigned count,
                                   struct pipe_sampler_view **views)
{
        struct r600_context *rctx = (struct r600_context *) pipe;
        struct r600_textures_info *dst = &rctx->samplers[shader];
        struct r600_pipe_sampler_view **rviews = (struct r600_pipe_sampler_view **)views;
        uint32_t dirty_sampler_states_mask = 0;
        unsigned i;
        /* This sets 1-bit for textures with index >= count. */
        uint32_t disable_mask = ~((1ull << count) - 1);
        /* These are the new textures set by this function. */
        uint32_t new_mask = 0;

        /* Set textures with index >= count to NULL. */
        uint32_t remaining_mask;

        assert(start == 0); /* XXX fix below */

        if (!views) {
                disable_mask = ~0u;
                count = 0;
        }

        remaining_mask = dst->views.enabled_mask & disable_mask;

        while (remaining_mask) {
                i = u_bit_scan(&remaining_mask);
                assert(dst->views.views[i]);

                pipe_sampler_view_reference((struct pipe_sampler_view **)&dst->views.views[i], NULL);
        }

        for (i = 0; i < count; i++) {
                if (rviews[i] == dst->views.views[i]) {
                        continue;
                }

                if (rviews[i]) {
                        struct r600_texture *rtex =
                                (struct r600_texture*)rviews[i]->base.texture;
                        bool is_buffer = rviews[i]->base.texture->target == PIPE_BUFFER;

                        if (!is_buffer && rtex->db_compatible) {
                                dst->views.compressed_depthtex_mask |= 1 << i;
                        } else {
                                dst->views.compressed_depthtex_mask &= ~(1 << i);
                        }

                        /* Track compressed colorbuffers. */
                        if (!is_buffer && rtex->cmask.size) {
                                dst->views.compressed_colortex_mask |= 1 << i;
                        } else {
                                dst->views.compressed_colortex_mask &= ~(1 << i);
                        }

                        /* Changing from array to non-arrays textures and vice versa requires
                         * updating TEX_ARRAY_OVERRIDE in sampler states on R6xx-R7xx. */
                        if (rctx->b.chip_class <= R700 &&
                            (dst->states.enabled_mask & (1 << i)) &&
                            (rviews[i]->base.texture->target == PIPE_TEXTURE_1D_ARRAY ||
                             rviews[i]->base.texture->target == PIPE_TEXTURE_2D_ARRAY) != dst->is_array_sampler[i]) {
                                dirty_sampler_states_mask |= 1 << i;
                        }

                        pipe_sampler_view_reference((struct pipe_sampler_view **)&dst->views.views[i], views[i]);
                        new_mask |= 1 << i;
                        r600_context_add_resource_size(pipe, views[i]->texture);
                } else {
                        pipe_sampler_view_reference((struct pipe_sampler_view **)&dst->views.views[i], NULL);
                        disable_mask |= 1 << i;
                }
        }

        dst->views.enabled_mask &= ~disable_mask;
        dst->views.dirty_mask &= dst->views.enabled_mask;
        dst->views.enabled_mask |= new_mask;
        dst->views.dirty_mask |= new_mask;
        dst->views.compressed_depthtex_mask &= dst->views.enabled_mask;
        dst->views.compressed_colortex_mask &= dst->views.enabled_mask;
        dst->views.dirty_buffer_constants = TRUE;
        r600_sampler_views_dirty(rctx, &dst->views);

        if (dirty_sampler_states_mask) {
                dst->states.dirty_mask |= dirty_sampler_states_mask;
                r600_sampler_states_dirty(rctx, &dst->states);
        }
}

static void r600_update_compressed_colortex_mask(struct r600_samplerview_state *views)
{
        uint32_t mask = views->enabled_mask;

        while (mask) {
                unsigned i = u_bit_scan(&mask);
                struct pipe_resource *res = views->views[i]->base.texture;

                if (res && res->target != PIPE_BUFFER) {
                        struct r600_texture *rtex = (struct r600_texture *)res;

                        if (rtex->cmask.size) {
                                views->compressed_colortex_mask |= 1 << i;
                        } else {
                                views->compressed_colortex_mask &= ~(1 << i);
                        }
                }
        }
}

/* Compute the key for the hw shader variant */
static inline union r600_shader_key r600_shader_selector_key(struct pipe_context * ctx,
                struct r600_pipe_shader_selector * sel)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        union r600_shader_key key;
        memset(&key, 0, sizeof(key));

        switch (sel->type) {
        case PIPE_SHADER_VERTEX: {
                key.vs.as_ls = (rctx->tes_shader != NULL);
                if (!key.vs.as_ls)
                        key.vs.as_es = (rctx->gs_shader != NULL);

                if (rctx->ps_shader->current->shader.gs_prim_id_input && !rctx->gs_shader) {
                        key.vs.as_gs_a = true;
                        key.vs.prim_id_out = rctx->ps_shader->current->shader.input[rctx->ps_shader->current->shader.ps_prim_id_input].spi_sid;
                }
                break;
        }
        case PIPE_SHADER_GEOMETRY:
                break;
        case PIPE_SHADER_FRAGMENT: {
                key.ps.color_two_side = rctx->rasterizer && rctx->rasterizer->two_side;
                key.ps.alpha_to_one = rctx->alpha_to_one &&
                                      rctx->rasterizer && rctx->rasterizer->multisample_enable &&
                                      !rctx->framebuffer.cb0_is_integer;
                key.ps.nr_cbufs = rctx->framebuffer.state.nr_cbufs;
                /* Dual-source blending only makes sense with nr_cbufs == 1. */
                if (key.ps.nr_cbufs == 1 && rctx->dual_src_blend)
                        key.ps.nr_cbufs = 2;
                break;
        }
        case PIPE_SHADER_TESS_EVAL:
                key.tes.as_es = (rctx->gs_shader != NULL);
                break;
        case PIPE_SHADER_TESS_CTRL:
                key.tcs.prim_mode = rctx->tes_shader->info.properties[TGSI_PROPERTY_TES_PRIM_MODE];
                break;
        default:
                assert(0);
        }

        return key;
}

/* Select the hw shader variant depending on the current state.
 * (*dirty) is set to 1 if current variant was changed */
static int r600_shader_select(struct pipe_context *ctx,
        struct r600_pipe_shader_selector* sel,
        bool *dirty)
{
        union r600_shader_key key;
        struct r600_pipe_shader * shader = NULL;
        int r;

        memset(&key, 0, sizeof(key));
        key = r600_shader_selector_key(ctx, sel);

        /* Check if we don't need to change anything.
         * This path is also used for most shaders that don't need multiple
         * variants, it will cost just a computation of the key and this
         * test. */
        if (likely(sel->current && memcmp(&sel->current->key, &key, sizeof(key)) == 0)) {
                return 0;
        }

        /* lookup if we have other variants in the list */
        if (sel->num_shaders > 1) {
                struct r600_pipe_shader *p = sel->current, *c = p->next_variant;

                while (c && memcmp(&c->key, &key, sizeof(key)) != 0) {
                        p = c;
                        c = c->next_variant;
                }

                if (c) {
                        p->next_variant = c->next_variant;
                        shader = c;
                }
        }

        if (unlikely(!shader)) {
                shader = CALLOC(1, sizeof(struct r600_pipe_shader));
                shader->selector = sel;

                r = r600_pipe_shader_create(ctx, shader, key);
                if (unlikely(r)) {
                        R600_ERR("Failed to build shader variant (type=%u) %d\n",
                                 sel->type, r);
                        sel->current = NULL;
                        FREE(shader);
                        return r;
                }

                /* We don't know the value of nr_ps_max_color_exports until we built
                 * at least one variant, so we may need to recompute the key after
                 * building first variant. */
                if (sel->type == PIPE_SHADER_FRAGMENT &&
                                sel->num_shaders == 0) {
                        sel->nr_ps_max_color_exports = shader->shader.nr_ps_max_color_exports;
                        key = r600_shader_selector_key(ctx, sel);
                }

                memcpy(&shader->key, &key, sizeof(key));
                sel->num_shaders++;
        }

        if (dirty)
                *dirty = true;

        shader->next_variant = sel->current;
        sel->current = shader;

        return 0;
}

static void *r600_create_shader_state(struct pipe_context *ctx,
                               const struct pipe_shader_state *state,
                               unsigned pipe_shader_type)
{
        struct r600_pipe_shader_selector *sel = CALLOC_STRUCT(r600_pipe_shader_selector);
        int i;

        sel->type = pipe_shader_type;
        sel->tokens = tgsi_dup_tokens(state->tokens);
        sel->so = state->stream_output;
        tgsi_scan_shader(state->tokens, &sel->info);

        switch (pipe_shader_type) {
        case PIPE_SHADER_GEOMETRY:
                sel->gs_output_prim =
                        sel->info.properties[TGSI_PROPERTY_GS_OUTPUT_PRIM];
                sel->gs_max_out_vertices =
                        sel->info.properties[TGSI_PROPERTY_GS_MAX_OUTPUT_VERTICES];
                sel->gs_num_invocations =
                        sel->info.properties[TGSI_PROPERTY_GS_INVOCATIONS];
                break;
        case PIPE_SHADER_VERTEX:
        case PIPE_SHADER_TESS_CTRL:
                sel->lds_patch_outputs_written_mask = 0;
                sel->lds_outputs_written_mask = 0;

                for (i = 0; i < sel->info.num_outputs; i++) {
                        unsigned name = sel->info.output_semantic_name[i];
                        unsigned index = sel->info.output_semantic_index[i];

                        switch (name) {
                        case TGSI_SEMANTIC_TESSINNER:
                        case TGSI_SEMANTIC_TESSOUTER:
                        case TGSI_SEMANTIC_PATCH:
                                sel->lds_patch_outputs_written_mask |=
                                        1llu << r600_get_lds_unique_index(name, index);
                                break;
                        default:
                                sel->lds_outputs_written_mask |=
                                        1llu << r600_get_lds_unique_index(name, index);
                        }
                }
                break;
        default:
                break;
        }

        return sel;
}

static void *r600_create_ps_state(struct pipe_context *ctx,
                                         const struct pipe_shader_state *state)
{
        return r600_create_shader_state(ctx, state, PIPE_SHADER_FRAGMENT);
}

static void *r600_create_vs_state(struct pipe_context *ctx,
                                         const struct pipe_shader_state *state)
{
        return r600_create_shader_state(ctx, state, PIPE_SHADER_VERTEX);
}

static void *r600_create_gs_state(struct pipe_context *ctx,
                                         const struct pipe_shader_state *state)
{
        return r600_create_shader_state(ctx, state, PIPE_SHADER_GEOMETRY);
}

static void *r600_create_tcs_state(struct pipe_context *ctx,
                                         const struct pipe_shader_state *state)
{
        return r600_create_shader_state(ctx, state, PIPE_SHADER_TESS_CTRL);
}

static void *r600_create_tes_state(struct pipe_context *ctx,
                                         const struct pipe_shader_state *state)
{
        return r600_create_shader_state(ctx, state, PIPE_SHADER_TESS_EVAL);
}

static void r600_bind_ps_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        if (!state)
                state = rctx->dummy_pixel_shader;

        rctx->ps_shader = (struct r600_pipe_shader_selector *)state;
}

static struct tgsi_shader_info *r600_get_vs_info(struct r600_context *rctx)
{
        if (rctx->gs_shader)
                return &rctx->gs_shader->info;
        else if (rctx->tes_shader)
                return &rctx->tes_shader->info;
        else if (rctx->vs_shader)
                return &rctx->vs_shader->info;
        else
                return NULL;
}

static void r600_bind_vs_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        if (!state)
                return;

        rctx->vs_shader = (struct r600_pipe_shader_selector *)state;
        r600_update_vs_writes_viewport_index(&rctx->b, r600_get_vs_info(rctx));
        rctx->b.streamout.stride_in_dw = rctx->vs_shader->so.stride;
}

static void r600_bind_gs_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        rctx->gs_shader = (struct r600_pipe_shader_selector *)state;
        r600_update_vs_writes_viewport_index(&rctx->b, r600_get_vs_info(rctx));

        if (!state)
                return;
        rctx->b.streamout.stride_in_dw = rctx->gs_shader->so.stride;
}

static void r600_bind_tcs_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        rctx->tcs_shader = (struct r600_pipe_shader_selector *)state;
}

static void r600_bind_tes_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        rctx->tes_shader = (struct r600_pipe_shader_selector *)state;
        r600_update_vs_writes_viewport_index(&rctx->b, r600_get_vs_info(rctx));

        if (!state)
                return;
        rctx->b.streamout.stride_in_dw = rctx->tes_shader->so.stride;
}

static void r600_delete_shader_selector(struct pipe_context *ctx,
                struct r600_pipe_shader_selector *sel)
{
        struct r600_pipe_shader *p = sel->current, *c;
        while (p) {
                c = p->next_variant;
                r600_pipe_shader_destroy(ctx, p);
                free(p);
                p = c;
        }

        free(sel->tokens);
        free(sel);
}


static void r600_delete_ps_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_pipe_shader_selector *sel = (struct r600_pipe_shader_selector *)state;

        if (rctx->ps_shader == sel) {
                rctx->ps_shader = NULL;
        }

        r600_delete_shader_selector(ctx, sel);
}

static void r600_delete_vs_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_pipe_shader_selector *sel = (struct r600_pipe_shader_selector *)state;

        if (rctx->vs_shader == sel) {
                rctx->vs_shader = NULL;
        }

        r600_delete_shader_selector(ctx, sel);
}


static void r600_delete_gs_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_pipe_shader_selector *sel = (struct r600_pipe_shader_selector *)state;

        if (rctx->gs_shader == sel) {
                rctx->gs_shader = NULL;
        }

        r600_delete_shader_selector(ctx, sel);
}

static void r600_delete_tcs_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_pipe_shader_selector *sel = (struct r600_pipe_shader_selector *)state;

        if (rctx->tcs_shader == sel) {
                rctx->tcs_shader = NULL;
        }

        r600_delete_shader_selector(ctx, sel);
}

static void r600_delete_tes_state(struct pipe_context *ctx, void *state)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_pipe_shader_selector *sel = (struct r600_pipe_shader_selector *)state;

        if (rctx->tes_shader == sel) {
                rctx->tes_shader = NULL;
        }

        r600_delete_shader_selector(ctx, sel);
}

void r600_constant_buffers_dirty(struct r600_context *rctx, struct r600_constbuf_state *state)
{
        if (state->dirty_mask) {
                state->atom.num_dw = rctx->b.chip_class >= EVERGREEN ? util_bitcount(state->dirty_mask)*20
                                                                   : util_bitcount(state->dirty_mask)*19;
                r600_mark_atom_dirty(rctx, &state->atom);
        }
}

static void r600_set_constant_buffer(struct pipe_context *ctx,
                                     enum pipe_shader_type shader, uint index,
                                     const struct pipe_constant_buffer *input)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct r600_constbuf_state *state = &rctx->constbuf_state[shader];
        struct pipe_constant_buffer *cb;
        const uint8_t *ptr;

        /* Note that the state tracker can unbind constant buffers by
         * passing NULL here.
         */
        if (unlikely(!input || (!input->buffer && !input->user_buffer))) {
                state->enabled_mask &= ~(1 << index);
                state->dirty_mask &= ~(1 << index);
                pipe_resource_reference(&state->cb[index].buffer, NULL);
                return;
        }

        cb = &state->cb[index];
        cb->buffer_size = input->buffer_size;

        ptr = input->user_buffer;

        if (ptr) {
                /* Upload the user buffer. */
                if (R600_BIG_ENDIAN) {
                        uint32_t *tmpPtr;
                        unsigned i, size = input->buffer_size;

                        if (!(tmpPtr = malloc(size))) {
                                R600_ERR("Failed to allocate BE swap buffer.\n");
                                return;
                        }

                        for (i = 0; i < size / 4; ++i) {
                                tmpPtr[i] = util_cpu_to_le32(((uint32_t *)ptr)[i]);
                        }

                        u_upload_data(ctx->stream_uploader, 0, size, 256,
                                      tmpPtr, &cb->buffer_offset, &cb->buffer);
                        free(tmpPtr);
                } else {
                        u_upload_data(ctx->stream_uploader, 0,
                                      input->buffer_size, 256, ptr,
                                      &cb->buffer_offset, &cb->buffer);
                }
                /* account it in gtt */
                rctx->b.gtt += input->buffer_size;
        } else {
                /* Setup the hw buffer. */
                cb->buffer_offset = input->buffer_offset;
                pipe_resource_reference(&cb->buffer, input->buffer);
                r600_context_add_resource_size(ctx, input->buffer);
        }

        state->enabled_mask |= 1 << index;
        state->dirty_mask |= 1 << index;
        r600_constant_buffers_dirty(rctx, state);
}

static void r600_set_sample_mask(struct pipe_context *pipe, unsigned sample_mask)
{
        struct r600_context *rctx = (struct r600_context*)pipe;

        if (rctx->sample_mask.sample_mask == (uint16_t)sample_mask)
                return;

        rctx->sample_mask.sample_mask = sample_mask;
        r600_mark_atom_dirty(rctx, &rctx->sample_mask.atom);
}

static void r600_update_driver_const_buffers(struct r600_context *rctx)
{
        int sh, size;
        void *ptr;
        struct pipe_constant_buffer cb;
        for (sh = 0; sh < PIPE_SHADER_TYPES; sh++) {
                struct r600_shader_driver_constants_info *info = &rctx->driver_consts[sh];
                if (!info->vs_ucp_dirty &&
                    !info->texture_const_dirty &&
                    !info->ps_sample_pos_dirty)
                        continue;

                ptr = info->constants;
                size = info->alloc_size;
                if (info->vs_ucp_dirty) {
                        assert(sh == PIPE_SHADER_VERTEX);
                        if (!size) {
                                ptr = rctx->clip_state.state.ucp;
                                size = R600_UCP_SIZE;
                        } else {
                                memcpy(ptr, rctx->clip_state.state.ucp, R600_UCP_SIZE);
                        }
                        info->vs_ucp_dirty = false;
                }

                if (info->ps_sample_pos_dirty) {
                        assert(sh == PIPE_SHADER_FRAGMENT);
                        if (!size) {
                                ptr = rctx->sample_positions;
                                size = R600_UCP_SIZE;
                        } else {
                                memcpy(ptr, rctx->sample_positions, R600_UCP_SIZE);
                        }
                        info->ps_sample_pos_dirty = false;
                }

                if (info->texture_const_dirty) {
                        assert (ptr);
                        assert (size);
                        if (sh == PIPE_SHADER_VERTEX)
                                memcpy(ptr, rctx->clip_state.state.ucp, R600_UCP_SIZE);
                        if (sh == PIPE_SHADER_FRAGMENT)
                                memcpy(ptr, rctx->sample_positions, R600_UCP_SIZE);
                }
                info->texture_const_dirty = false;

                cb.buffer = NULL;
                cb.user_buffer = ptr;
                cb.buffer_offset = 0;
                cb.buffer_size = size;
                rctx->b.b.set_constant_buffer(&rctx->b.b, sh, R600_BUFFER_INFO_CONST_BUFFER, &cb);
                pipe_resource_reference(&cb.buffer, NULL);
        }
}

static void *r600_alloc_buf_consts(struct r600_context *rctx, int shader_type,
                                   int array_size, uint32_t *base_offset)
{
        struct r600_shader_driver_constants_info *info = &rctx->driver_consts[shader_type];
        if (array_size + R600_UCP_SIZE > info->alloc_size) {
                info->constants = realloc(info->constants, array_size + R600_UCP_SIZE);
                info->alloc_size = array_size + R600_UCP_SIZE;
        }
        memset(info->constants + (R600_UCP_SIZE / 4), 0, array_size);
        info->texture_const_dirty = true;
        *base_offset = R600_UCP_SIZE;
        return info->constants;
}
/*
 * On r600/700 hw we don't have vertex fetch swizzle, though TBO
 * doesn't require full swizzles it does need masking and setting alpha
 * to one, so we setup a set of 5 constants with the masks + alpha value
 * then in the shader, we AND the 4 components with 0xffffffff or 0,
 * then OR the alpha with the value given here.
 * We use a 6th constant to store the txq buffer size in
 * we use 7th slot for number of cube layers in a cube map array.
 */
static void r600_setup_buffer_constants(struct r600_context *rctx, int shader_type)
{
        struct r600_textures_info *samplers = &rctx->samplers[shader_type];
        int bits;
        uint32_t array_size;
        int i, j;
        uint32_t *constants;
        uint32_t base_offset;
        if (!samplers->views.dirty_buffer_constants)
                return;

        samplers->views.dirty_buffer_constants = FALSE;

        bits = util_last_bit(samplers->views.enabled_mask);
        array_size = bits * 8 * sizeof(uint32_t) * 4;

        constants = r600_alloc_buf_consts(rctx, shader_type, array_size, &base_offset);

        for (i = 0; i < bits; i++) {
                if (samplers->views.enabled_mask & (1 << i)) {
                        int offset = (base_offset / 4) + i * 8;
                        const struct util_format_description *desc;
                        desc = util_format_description(samplers->views.views[i]->base.format);

                        for (j = 0; j < 4; j++)
                                if (j < desc->nr_channels)
                                        constants[offset+j] = 0xffffffff;
                                else
                                        constants[offset+j] = 0x0;
                        if (desc->nr_channels < 4) {
                                if (desc->channel[0].pure_integer)
                                        constants[offset+4] = 1;
                                else
                                        constants[offset+4] = fui(1.0);
                        } else
                                constants[offset + 4] = 0;

                        constants[offset + 5] = samplers->views.views[i]->base.texture->width0 / util_format_get_blocksize(samplers->views.views[i]->base.format);
                        constants[offset + 6] = samplers->views.views[i]->base.texture->array_size / 6;
                }
        }

}

/* On evergreen we store two values
 * 1. buffer size for TXQ
 * 2. number of cube layers in a cube map array.
 */
static void eg_setup_buffer_constants(struct r600_context *rctx, int shader_type)
{
        struct r600_textures_info *samplers = &rctx->samplers[shader_type];
        int bits;
        uint32_t array_size;
        int i;
        uint32_t *constants;
        uint32_t base_offset;
        if (!samplers->views.dirty_buffer_constants)
                return;

        samplers->views.dirty_buffer_constants = FALSE;

        bits = util_last_bit(samplers->views.enabled_mask);
        array_size = bits * 2 * sizeof(uint32_t) * 4;

        constants = r600_alloc_buf_consts(rctx, shader_type, array_size,
                                          &base_offset);

        for (i = 0; i < bits; i++) {
                if (samplers->views.enabled_mask & (1 << i)) {
                        uint32_t offset = (base_offset / 4) + i * 2;
                        constants[offset] = samplers->views.views[i]->base.texture->width0 / util_format_get_blocksize(samplers->views.views[i]->base.format);
                        constants[offset + 1] = samplers->views.views[i]->base.texture->array_size / 6;
                }
        }
}

/* set sample xy locations as array of fragment shader constants */
void r600_set_sample_locations_constant_buffer(struct r600_context *rctx)
{
        int i;
        struct pipe_context *ctx = &rctx->b.b;

        assert(rctx->framebuffer.nr_samples < R600_UCP_SIZE);
        assert(rctx->framebuffer.nr_samples <= ARRAY_SIZE(rctx->sample_positions)/4);

        memset(rctx->sample_positions, 0, 4 * 4 * 16);
        for (i = 0; i < rctx->framebuffer.nr_samples; i++) {
                ctx->get_sample_position(ctx, rctx->framebuffer.nr_samples, i, &rctx->sample_positions[4*i]);
                /* Also fill in center-zeroed positions used for interpolateAtSample */
                rctx->sample_positions[4*i + 2] = rctx->sample_positions[4*i + 0] - 0.5f;
                rctx->sample_positions[4*i + 3] = rctx->sample_positions[4*i + 1] - 0.5f;
        }

        rctx->driver_consts[PIPE_SHADER_FRAGMENT].ps_sample_pos_dirty = true;
}

static void update_shader_atom(struct pipe_context *ctx,
                               struct r600_shader_state *state,
                               struct r600_pipe_shader *shader)
{
        struct r600_context *rctx = (struct r600_context *)ctx;

        state->shader = shader;
        if (shader) {
                state->atom.num_dw = shader->command_buffer.num_dw;
                r600_context_add_resource_size(ctx, (struct pipe_resource *)shader->bo);
        } else {
                state->atom.num_dw = 0;
        }
        r600_mark_atom_dirty(rctx, &state->atom);
}

static void update_gs_block_state(struct r600_context *rctx, unsigned enable)
{
        if (rctx->shader_stages.geom_enable != enable) {
                rctx->shader_stages.geom_enable = enable;
                r600_mark_atom_dirty(rctx, &rctx->shader_stages.atom);
        }

        if (rctx->gs_rings.enable != enable) {
                rctx->gs_rings.enable = enable;
                r600_mark_atom_dirty(rctx, &rctx->gs_rings.atom);

                if (enable && !rctx->gs_rings.esgs_ring.buffer) {
                        unsigned size = 0x1C000;
                        rctx->gs_rings.esgs_ring.buffer =
                                        pipe_buffer_create(rctx->b.b.screen, 0,
                                                        PIPE_USAGE_DEFAULT, size);
                        rctx->gs_rings.esgs_ring.buffer_size = size;

                        size = 0x4000000;

                        rctx->gs_rings.gsvs_ring.buffer =
                                        pipe_buffer_create(rctx->b.b.screen, 0,
                                                        PIPE_USAGE_DEFAULT, size);
                        rctx->gs_rings.gsvs_ring.buffer_size = size;
                }

                if (enable) {
                        r600_set_constant_buffer(&rctx->b.b, PIPE_SHADER_GEOMETRY,
                                        R600_GS_RING_CONST_BUFFER, &rctx->gs_rings.esgs_ring);
                        if (rctx->tes_shader) {
                                r600_set_constant_buffer(&rctx->b.b, PIPE_SHADER_TESS_EVAL,
                                                         R600_GS_RING_CONST_BUFFER, &rctx->gs_rings.gsvs_ring);
                        } else {
                                r600_set_constant_buffer(&rctx->b.b, PIPE_SHADER_VERTEX,
                                                         R600_GS_RING_CONST_BUFFER, &rctx->gs_rings.gsvs_ring);
                        }
                } else {
                        r600_set_constant_buffer(&rctx->b.b, PIPE_SHADER_GEOMETRY,
                                        R600_GS_RING_CONST_BUFFER, NULL);
                        r600_set_constant_buffer(&rctx->b.b, PIPE_SHADER_VERTEX,
                                        R600_GS_RING_CONST_BUFFER, NULL);
                        r600_set_constant_buffer(&rctx->b.b, PIPE_SHADER_TESS_EVAL,
                                        R600_GS_RING_CONST_BUFFER, NULL);
                }
        }
}

static void r600_update_clip_state(struct r600_context *rctx,
                                   struct r600_pipe_shader *current)
{
        if (current->pa_cl_vs_out_cntl != rctx->clip_misc_state.pa_cl_vs_out_cntl ||
            current->shader.clip_dist_write != rctx->clip_misc_state.clip_dist_write ||
            current->shader.vs_position_window_space != rctx->clip_misc_state.clip_disable ||
            current->shader.vs_out_viewport != rctx->clip_misc_state.vs_out_viewport) {
                rctx->clip_misc_state.pa_cl_vs_out_cntl = current->pa_cl_vs_out_cntl;
                rctx->clip_misc_state.clip_dist_write = current->shader.clip_dist_write;
                rctx->clip_misc_state.clip_disable = current->shader.vs_position_window_space;
                rctx->clip_misc_state.vs_out_viewport = current->shader.vs_out_viewport;
                r600_mark_atom_dirty(rctx, &rctx->clip_misc_state.atom);
        }
}

static void r600_generate_fixed_func_tcs(struct r600_context *rctx)
{
        struct ureg_src const0, const1;
        struct ureg_dst tessouter, tessinner;
        struct ureg_program *ureg = ureg_create(PIPE_SHADER_TESS_CTRL);

        if (!ureg)
                return; /* if we get here, we're screwed */

        assert(!rctx->fixed_func_tcs_shader);

        ureg_DECL_constant2D(ureg, 0, 3, R600_LDS_INFO_CONST_BUFFER);
        const0 = ureg_src_dimension(ureg_src_register(TGSI_FILE_CONSTANT, 2),
                                    R600_LDS_INFO_CONST_BUFFER);
        const1 = ureg_src_dimension(ureg_src_register(TGSI_FILE_CONSTANT, 3),
                                    R600_LDS_INFO_CONST_BUFFER);

        tessouter = ureg_DECL_output(ureg, TGSI_SEMANTIC_TESSOUTER, 0);
        tessinner = ureg_DECL_output(ureg, TGSI_SEMANTIC_TESSINNER, 0);

        ureg_MOV(ureg, tessouter, const0);
        ureg_MOV(ureg, tessinner, const1);
        ureg_END(ureg);

        rctx->fixed_func_tcs_shader =
                ureg_create_shader_and_destroy(ureg, &rctx->b.b);
}

#define SELECT_SHADER_OR_FAIL(x) do {                                   \
                r600_shader_select(ctx, rctx->x##_shader, &x##_dirty);  \
                if (unlikely(!rctx->x##_shader->current))               \
                        return false;                                   \
        } while(0)

#define UPDATE_SHADER(hw, sw) do {                                      \
                if (sw##_dirty || (rctx->hw_shader_stages[(hw)].shader != rctx->sw##_shader->current)) \
                        update_shader_atom(ctx, &rctx->hw_shader_stages[(hw)], rctx->sw##_shader->current); \
        } while(0)

#define UPDATE_SHADER_CLIP(hw, sw) do {                                 \
                if (sw##_dirty || (rctx->hw_shader_stages[(hw)].shader != rctx->sw##_shader->current)) { \
                        update_shader_atom(ctx, &rctx->hw_shader_stages[(hw)], rctx->sw##_shader->current); \
                        clip_so_current = rctx->sw##_shader->current;   \
                }                                                       \
        } while(0)

#define UPDATE_SHADER_GS(hw, hw2, sw) do {                              \
                if (sw##_dirty || (rctx->hw_shader_stages[(hw)].shader != rctx->sw##_shader->current)) { \
                        update_shader_atom(ctx, &rctx->hw_shader_stages[(hw)], rctx->sw##_shader->current); \
                        update_shader_atom(ctx, &rctx->hw_shader_stages[(hw2)], rctx->sw##_shader->current->gs_copy_shader); \
                        clip_so_current = rctx->sw##_shader->current->gs_copy_shader; \
                }                                                       \
        } while(0)

#define SET_NULL_SHADER(hw) do {                                                \
                if (rctx->hw_shader_stages[(hw)].shader)        \
                        update_shader_atom(ctx, &rctx->hw_shader_stages[(hw)], NULL); \
        } while (0)

static bool r600_update_derived_state(struct r600_context *rctx)
{
        struct pipe_context * ctx = (struct pipe_context*)rctx;
        bool ps_dirty = false, vs_dirty = false, gs_dirty = false;
        bool tcs_dirty = false, tes_dirty = false, fixed_func_tcs_dirty = false;
        bool blend_disable;
        bool need_buf_const;
        struct r600_pipe_shader *clip_so_current = NULL;

        if (!rctx->blitter->running) {
                unsigned i;
                unsigned counter;

                counter = p_atomic_read(&rctx->screen->b.compressed_colortex_counter);
                if (counter != rctx->b.last_compressed_colortex_counter) {
                        rctx->b.last_compressed_colortex_counter = counter;

                        for (i = 0; i < PIPE_SHADER_TYPES; ++i) {
                                r600_update_compressed_colortex_mask(&rctx->samplers[i].views);
                        }
                }

                /* Decompress textures if needed. */
                for (i = 0; i < PIPE_SHADER_TYPES; i++) {
                        struct r600_samplerview_state *views = &rctx->samplers[i].views;
                        if (views->compressed_depthtex_mask) {
                                r600_decompress_depth_textures(rctx, views);
                        }
                        if (views->compressed_colortex_mask) {
                                r600_decompress_color_textures(rctx, views);
                        }
                }
        }

        SELECT_SHADER_OR_FAIL(ps);

        r600_mark_atom_dirty(rctx, &rctx->shader_stages.atom);

        update_gs_block_state(rctx, rctx->gs_shader != NULL);

        if (rctx->gs_shader)
                SELECT_SHADER_OR_FAIL(gs);

        /* Hull Shader */
        if (rctx->tcs_shader) {
                SELECT_SHADER_OR_FAIL(tcs);

                UPDATE_SHADER(EG_HW_STAGE_HS, tcs);
        } else if (rctx->tes_shader) {
                if (!rctx->fixed_func_tcs_shader) {
                        r600_generate_fixed_func_tcs(rctx);
                        if (!rctx->fixed_func_tcs_shader)
                                return false;

                }
                SELECT_SHADER_OR_FAIL(fixed_func_tcs);

                UPDATE_SHADER(EG_HW_STAGE_HS, fixed_func_tcs);
        } else
                SET_NULL_SHADER(EG_HW_STAGE_HS);

        if (rctx->tes_shader) {
                SELECT_SHADER_OR_FAIL(tes);
        }

        SELECT_SHADER_OR_FAIL(vs);

        if (rctx->gs_shader) {
                if (!rctx->shader_stages.geom_enable) {
                        rctx->shader_stages.geom_enable = true;
                        r600_mark_atom_dirty(rctx, &rctx->shader_stages.atom);
                }

                /* gs_shader provides GS and VS (copy shader) */
                UPDATE_SHADER_GS(R600_HW_STAGE_GS, R600_HW_STAGE_VS, gs);

                /* vs_shader is used as ES */

                if (rctx->tes_shader) {
                        /* VS goes to LS, TES goes to ES */
                        UPDATE_SHADER(R600_HW_STAGE_ES, tes);
                        UPDATE_SHADER(EG_HW_STAGE_LS, vs);
               } else {
                        /* vs_shader is used as ES */
                        UPDATE_SHADER(R600_HW_STAGE_ES, vs);
                        SET_NULL_SHADER(EG_HW_STAGE_LS);
                }
        } else {
                if (unlikely(rctx->hw_shader_stages[R600_HW_STAGE_GS].shader)) {
                        SET_NULL_SHADER(R600_HW_STAGE_GS);
                        SET_NULL_SHADER(R600_HW_STAGE_ES);
                        rctx->shader_stages.geom_enable = false;
                        r600_mark_atom_dirty(rctx, &rctx->shader_stages.atom);
                }

                if (rctx->tes_shader) {
                        /* if TES is loaded and no geometry, TES runs on hw VS, VS runs on hw LS */
                        UPDATE_SHADER_CLIP(R600_HW_STAGE_VS, tes);
                        UPDATE_SHADER(EG_HW_STAGE_LS, vs);
                } else {
                        SET_NULL_SHADER(EG_HW_STAGE_LS);
                        UPDATE_SHADER_CLIP(R600_HW_STAGE_VS, vs);
                }
        }

        /* Update clip misc state. */
        if (clip_so_current) {
                r600_update_clip_state(rctx, clip_so_current);
                rctx->b.streamout.enabled_stream_buffers_mask = clip_so_current->enabled_stream_buffers_mask;
        }

        if (unlikely(ps_dirty || rctx->hw_shader_stages[R600_HW_STAGE_PS].shader != rctx->ps_shader->current ||
                rctx->rasterizer->sprite_coord_enable != rctx->ps_shader->current->sprite_coord_enable ||
                rctx->rasterizer->flatshade != rctx->ps_shader->current->flatshade)) {

                if (rctx->cb_misc_state.nr_ps_color_outputs != rctx->ps_shader->current->nr_ps_color_outputs) {
                        rctx->cb_misc_state.nr_ps_color_outputs = rctx->ps_shader->current->nr_ps_color_outputs;
                        r600_mark_atom_dirty(rctx, &rctx->cb_misc_state.atom);
                }

                if (rctx->b.chip_class <= R700) {
                        bool multiwrite = rctx->ps_shader->current->shader.fs_write_all;

                        if (rctx->cb_misc_state.multiwrite != multiwrite) {
                                rctx->cb_misc_state.multiwrite = multiwrite;
                                r600_mark_atom_dirty(rctx, &rctx->cb_misc_state.atom);
                        }
                }

                if (unlikely(!ps_dirty && rctx->ps_shader && rctx->rasterizer &&
                                ((rctx->rasterizer->sprite_coord_enable != rctx->ps_shader->current->sprite_coord_enable) ||
                                                (rctx->rasterizer->flatshade != rctx->ps_shader->current->flatshade)))) {

                        if (rctx->b.chip_class >= EVERGREEN)
                                evergreen_update_ps_state(ctx, rctx->ps_shader->current);
                        else
                                r600_update_ps_state(ctx, rctx->ps_shader->current);
                }

                r600_mark_atom_dirty(rctx, &rctx->shader_stages.atom);
        }
        UPDATE_SHADER(R600_HW_STAGE_PS, ps);

        if (rctx->b.chip_class >= EVERGREEN) {
                evergreen_update_db_shader_control(rctx);
        } else {
                r600_update_db_shader_control(rctx);
        }

        /* on R600 we stuff masks + txq info into one constant buffer */
        /* on evergreen we only need a txq info one */
        if (rctx->ps_shader) {
                need_buf_const = rctx->ps_shader->current->shader.uses_tex_buffers || rctx->ps_shader->current->shader.has_txq_cube_array_z_comp;
                if (need_buf_const) {
                        if (rctx->b.chip_class < EVERGREEN)
                                r600_setup_buffer_constants(rctx, PIPE_SHADER_FRAGMENT);
                        else
                                eg_setup_buffer_constants(rctx, PIPE_SHADER_FRAGMENT);
                }
        }

        if (rctx->vs_shader) {
                need_buf_const = rctx->vs_shader->current->shader.uses_tex_buffers || rctx->vs_shader->current->shader.has_txq_cube_array_z_comp;
                if (need_buf_const) {
                        if (rctx->b.chip_class < EVERGREEN)
                                r600_setup_buffer_constants(rctx, PIPE_SHADER_VERTEX);
                        else
                                eg_setup_buffer_constants(rctx, PIPE_SHADER_VERTEX);
                }
        }

        if (rctx->gs_shader) {
                need_buf_const = rctx->gs_shader->current->shader.uses_tex_buffers || rctx->gs_shader->current->shader.has_txq_cube_array_z_comp;
                if (need_buf_const) {
                        if (rctx->b.chip_class < EVERGREEN)
                                r600_setup_buffer_constants(rctx, PIPE_SHADER_GEOMETRY);
                        else
                                eg_setup_buffer_constants(rctx, PIPE_SHADER_GEOMETRY);
                }
        }

        r600_update_driver_const_buffers(rctx);

        if (rctx->b.chip_class < EVERGREEN && rctx->ps_shader && rctx->vs_shader) {
                if (!r600_adjust_gprs(rctx)) {
                        /* discard rendering */
                        return false;
                }
        }

        if (rctx->b.chip_class == EVERGREEN) {
                if (!evergreen_adjust_gprs(rctx)) {
                        /* discard rendering */
                        return false;
                }
        }

        blend_disable = (rctx->dual_src_blend &&
                        rctx->ps_shader->current->nr_ps_color_outputs < 2);

        if (blend_disable != rctx->force_blend_disable) {
                rctx->force_blend_disable = blend_disable;
                r600_bind_blend_state_internal(rctx,
                                               rctx->blend_state.cso,
                                               blend_disable);
        }

        return true;
}

void r600_emit_clip_misc_state(struct r600_context *rctx, struct r600_atom *atom)
{
        struct radeon_winsys_cs *cs = rctx->b.gfx.cs;
        struct r600_clip_misc_state *state = &rctx->clip_misc_state;

        radeon_set_context_reg(cs, R_028810_PA_CL_CLIP_CNTL,
                               state->pa_cl_clip_cntl |
                               (state->clip_dist_write ? 0 : state->clip_plane_enable & 0x3F) |
                               S_028810_CLIP_DISABLE(state->clip_disable));
        radeon_set_context_reg(cs, R_02881C_PA_CL_VS_OUT_CNTL,
                               state->pa_cl_vs_out_cntl |
                               (state->clip_plane_enable & state->clip_dist_write));
        /* reuse needs to be set off if we write oViewport */
        if (rctx->b.chip_class >= EVERGREEN)
                radeon_set_context_reg(cs, R_028AB4_VGT_REUSE_OFF,
                                       S_028AB4_REUSE_OFF(state->vs_out_viewport));
}

static void r600_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *dinfo)
{
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct pipe_draw_info info = *dinfo;
        struct pipe_index_buffer ib = {};
        struct radeon_winsys_cs *cs = rctx->b.gfx.cs;
        bool render_cond_bit = rctx->b.render_cond && !rctx->b.render_cond_force_off;
        uint64_t mask;
        unsigned num_patches, dirty_tex_counter;

        if (!info.indirect && !info.count && (info.indexed || !info.count_from_stream_output)) {
                return;
        }

        if (!rctx->vs_shader || !rctx->ps_shader) {
                assert(0);
                return;
        }

        /* make sure that the gfx ring is only one active */
        if (radeon_emitted(rctx->b.dma.cs, 0)) {
                rctx->b.dma.flush(rctx, RADEON_FLUSH_ASYNC, NULL);
        }

        /* Re-emit the framebuffer state if needed. */
        dirty_tex_counter = p_atomic_read(&rctx->b.screen->dirty_tex_counter);
        if (dirty_tex_counter != rctx->b.last_dirty_tex_counter) {
                rctx->b.last_dirty_tex_counter = dirty_tex_counter;
                r600_mark_atom_dirty(rctx, &rctx->framebuffer.atom);
        }

        if (!r600_update_derived_state(rctx)) {
                /* useless to render because current rendering command
                 * can't be achieved
                 */
                return;
        }

        if (info.indexed) {
                /* Initialize the index buffer struct. */
                pipe_resource_reference(&ib.buffer, rctx->index_buffer.buffer);
                ib.user_buffer = rctx->index_buffer.user_buffer;
                ib.index_size = rctx->index_buffer.index_size;
                ib.offset = rctx->index_buffer.offset;
                if (!info.indirect) {
                        ib.offset += info.start * ib.index_size;
                }

                /* Translate 8-bit indices to 16-bit. */
                if (unlikely(ib.index_size == 1)) {
                        struct pipe_resource *out_buffer = NULL;
                        unsigned out_offset;
                        void *ptr;
                        unsigned start, count;

                        if (likely(!info.indirect)) {
                                start = 0;
                                count = info.count;
                        }
                        else {
                                /* Have to get start/count from indirect buffer, slow path ahead... */
                                struct r600_resource *indirect_resource = (struct r600_resource *)info.indirect;
                                unsigned *data = r600_buffer_map_sync_with_rings(&rctx->b, indirect_resource,
                                        PIPE_TRANSFER_READ);
                                if (data) {
                                        data += info.indirect_offset / sizeof(unsigned);
                                        start = data[2] * ib.index_size;
                                        count = data[0];
                                }
                                else {
                                        start = 0;
                                        count = 0;
                                }
                        }

                        u_upload_alloc(ctx->stream_uploader, start, count * 2,
                                       256, &out_offset, &out_buffer, &ptr);

                        util_shorten_ubyte_elts_to_userptr(
                                                &rctx->b.b, &ib, 0, 0, ib.offset + start, count, ptr);

                        pipe_resource_reference(&ib.buffer, NULL);
                        ib.user_buffer = NULL;
                        ib.buffer = out_buffer;
                        ib.offset = out_offset;
                        ib.index_size = 2;
                }

                /* Upload the index buffer.
                 * The upload is skipped for small index counts on little-endian machines
                 * and the indices are emitted via PKT3_DRAW_INDEX_IMMD.
                 * Indirect draws never use immediate indices.
                 * Note: Instanced rendering in combination with immediate indices hangs. */
                if (ib.user_buffer && (R600_BIG_ENDIAN || info.indirect ||
                                                 info.instance_count > 1 ||
                                                 info.count*ib.index_size > 20)) {
                        u_upload_data(ctx->stream_uploader, 0,
                                      info.count * ib.index_size, 256,
                                      ib.user_buffer, &ib.offset, &ib.buffer);
                        ib.user_buffer = NULL;
                }
        } else {
                info.index_bias = info.start;
        }

        /* Set the index offset and primitive restart. */
        if (rctx->vgt_state.vgt_multi_prim_ib_reset_en != info.primitive_restart ||
            rctx->vgt_state.vgt_multi_prim_ib_reset_indx != info.restart_index ||
            rctx->vgt_state.vgt_indx_offset != info.index_bias ||
            (rctx->vgt_state.last_draw_was_indirect && !info.indirect)) {
                rctx->vgt_state.vgt_multi_prim_ib_reset_en = info.primitive_restart;
                rctx->vgt_state.vgt_multi_prim_ib_reset_indx = info.restart_index;
                rctx->vgt_state.vgt_indx_offset = info.index_bias;
                r600_mark_atom_dirty(rctx, &rctx->vgt_state.atom);
        }

        /* Workaround for hardware deadlock on certain R600 ASICs: write into a CB register. */
        if (rctx->b.chip_class == R600) {
                rctx->b.flags |= R600_CONTEXT_PS_PARTIAL_FLUSH;
                r600_mark_atom_dirty(rctx, &rctx->cb_misc_state.atom);
        }

        if (rctx->b.chip_class >= EVERGREEN)
                evergreen_setup_tess_constants(rctx, &info, &num_patches);

        /* Emit states. */
        r600_need_cs_space(rctx, ib.user_buffer ? 5 : 0, TRUE);
        r600_flush_emit(rctx);

        mask = rctx->dirty_atoms;
        while (mask != 0) {
                r600_emit_atom(rctx, rctx->atoms[u_bit_scan64(&mask)]);
        }

        if (rctx->b.chip_class == CAYMAN) {
                /* Copied from radeonsi. */
                unsigned primgroup_size = 128; /* recommended without a GS */
                bool ia_switch_on_eop = false;
                bool partial_vs_wave = false;

                if (rctx->gs_shader)
                        primgroup_size = 64; /* recommended with a GS */

                if ((rctx->rasterizer && rctx->rasterizer->pa_sc_line_stipple) ||
                    (rctx->b.screen->debug_flags & DBG_SWITCH_ON_EOP)) {
                        ia_switch_on_eop = true;
                }

                if (r600_get_strmout_en(&rctx->b))
                        partial_vs_wave = true;

                radeon_set_context_reg(cs, CM_R_028AA8_IA_MULTI_VGT_PARAM,
                                       S_028AA8_SWITCH_ON_EOP(ia_switch_on_eop) |
                                       S_028AA8_PARTIAL_VS_WAVE_ON(partial_vs_wave) |
                                       S_028AA8_PRIMGROUP_SIZE(primgroup_size - 1));
        }

        if (rctx->b.chip_class >= EVERGREEN) {
                uint32_t ls_hs_config = evergreen_get_ls_hs_config(rctx, &info,
                                                                   num_patches);

                evergreen_set_ls_hs_config(rctx, cs, ls_hs_config);
                evergreen_set_lds_alloc(rctx, cs, rctx->lds_alloc);
        }

        /* On R6xx, CULL_FRONT=1 culls all points, lines, and rectangles,
         * even though it should have no effect on those. */
        if (rctx->b.chip_class == R600 && rctx->rasterizer) {
                unsigned su_sc_mode_cntl = rctx->rasterizer->pa_su_sc_mode_cntl;
                unsigned prim = info.mode;

                if (rctx->gs_shader) {
                        prim = rctx->gs_shader->gs_output_prim;
                }
                prim = r600_conv_prim_to_gs_out(prim); /* decrease the number of types to 3 */

                if (prim == V_028A6C_OUTPRIM_TYPE_POINTLIST ||
                    prim == V_028A6C_OUTPRIM_TYPE_LINESTRIP ||
                    info.mode == R600_PRIM_RECTANGLE_LIST) {
                        su_sc_mode_cntl &= C_028814_CULL_FRONT;
                }
                radeon_set_context_reg(cs, R_028814_PA_SU_SC_MODE_CNTL, su_sc_mode_cntl);
        }

        /* Update start instance. */
        if (!info.indirect && rctx->last_start_instance != info.start_instance) {
                radeon_set_ctl_const(cs, R_03CFF4_SQ_VTX_START_INST_LOC, info.start_instance);
                rctx->last_start_instance = info.start_instance;
        }

        /* Update the primitive type. */
        if (rctx->last_primitive_type != info.mode) {
                unsigned ls_mask = 0;

                if (info.mode == PIPE_PRIM_LINES)
                        ls_mask = 1;
                else if (info.mode == PIPE_PRIM_LINE_STRIP ||
                         info.mode == PIPE_PRIM_LINE_LOOP)
                        ls_mask = 2;

                radeon_set_context_reg(cs, R_028A0C_PA_SC_LINE_STIPPLE,
                                       S_028A0C_AUTO_RESET_CNTL(ls_mask) |
                                       (rctx->rasterizer ? rctx->rasterizer->pa_sc_line_stipple : 0));
                radeon_set_config_reg(cs, R_008958_VGT_PRIMITIVE_TYPE,
                                      r600_conv_pipe_prim(info.mode));

                rctx->last_primitive_type = info.mode;
        }

        /* Draw packets. */
        if (!info.indirect) {
                radeon_emit(cs, PKT3(PKT3_NUM_INSTANCES, 0, 0));
                radeon_emit(cs, info.instance_count);
        }

        if (unlikely(info.indirect)) {
                uint64_t va = r600_resource(info.indirect)->gpu_address;
                assert(rctx->b.chip_class >= EVERGREEN);

                // Invalidate so non-indirect draw calls reset this state
                rctx->vgt_state.last_draw_was_indirect = true;
                rctx->last_start_instance = -1;

                radeon_emit(cs, PKT3(EG_PKT3_SET_BASE, 2, 0));
                radeon_emit(cs, EG_DRAW_INDEX_INDIRECT_PATCH_TABLE_BASE);
                radeon_emit(cs, va);
                radeon_emit(cs, (va >> 32UL) & 0xFF);

                radeon_emit(cs, PKT3(PKT3_NOP, 0, 0));
                radeon_emit(cs, radeon_add_to_buffer_list(&rctx->b, &rctx->b.gfx,
                                                          (struct r600_resource*)info.indirect,
                                                          RADEON_USAGE_READ,
                                                          RADEON_PRIO_DRAW_INDIRECT));
        }

        if (info.indexed) {
                radeon_emit(cs, PKT3(PKT3_INDEX_TYPE, 0, 0));
                radeon_emit(cs, ib.index_size == 4 ?
                                (VGT_INDEX_32 | (R600_BIG_ENDIAN ? VGT_DMA_SWAP_32_BIT : 0)) :
                                (VGT_INDEX_16 | (R600_BIG_ENDIAN ? VGT_DMA_SWAP_16_BIT : 0)));

                if (ib.user_buffer) {
                        unsigned size_bytes = info.count*ib.index_size;
                        unsigned size_dw = align(size_bytes, 4) / 4;
                        radeon_emit(cs, PKT3(PKT3_DRAW_INDEX_IMMD, 1 + size_dw, render_cond_bit));
                        radeon_emit(cs, info.count);
                        radeon_emit(cs, V_0287F0_DI_SRC_SEL_IMMEDIATE);
                        radeon_emit_array(cs, ib.user_buffer, size_dw);
                } else {
                        uint64_t va = r600_resource(ib.buffer)->gpu_address + ib.offset;

                        if (likely(!info.indirect)) {
                                radeon_emit(cs, PKT3(PKT3_DRAW_INDEX, 3, render_cond_bit));
                                radeon_emit(cs, va);
                                radeon_emit(cs, (va >> 32UL) & 0xFF);
                                radeon_emit(cs, info.count);
                                radeon_emit(cs, V_0287F0_DI_SRC_SEL_DMA);
                                radeon_emit(cs, PKT3(PKT3_NOP, 0, 0));
                                radeon_emit(cs, radeon_add_to_buffer_list(&rctx->b, &rctx->b.gfx,
                                                                          (struct r600_resource*)ib.buffer,
                                                                          RADEON_USAGE_READ,
                                                                          RADEON_PRIO_INDEX_BUFFER));
                        }
                        else {
                                uint32_t max_size = (ib.buffer->width0 - ib.offset) / ib.index_size;

                                radeon_emit(cs, PKT3(EG_PKT3_INDEX_BASE, 1, 0));
                                radeon_emit(cs, va);
                                radeon_emit(cs, (va >> 32UL) & 0xFF);

                                radeon_emit(cs, PKT3(PKT3_NOP, 0, 0));
                                radeon_emit(cs, radeon_add_to_buffer_list(&rctx->b, &rctx->b.gfx,
                                                                          (struct r600_resource*)ib.buffer,
                                                                          RADEON_USAGE_READ,
                                                                          RADEON_PRIO_INDEX_BUFFER));

                                radeon_emit(cs, PKT3(EG_PKT3_INDEX_BUFFER_SIZE, 0, 0));
                                radeon_emit(cs, max_size);

                                radeon_emit(cs, PKT3(EG_PKT3_DRAW_INDEX_INDIRECT, 1, render_cond_bit));
                                radeon_emit(cs, info.indirect_offset);
                                radeon_emit(cs, V_0287F0_DI_SRC_SEL_DMA);
                        }
                }
        } else {
                if (unlikely(info.count_from_stream_output)) {
                        struct r600_so_target *t = (struct r600_so_target*)info.count_from_stream_output;
                        uint64_t va = t->buf_filled_size->gpu_address + t->buf_filled_size_offset;

                        radeon_set_context_reg(cs, R_028B30_VGT_STRMOUT_DRAW_OPAQUE_VERTEX_STRIDE, t->stride_in_dw);

                        radeon_emit(cs, PKT3(PKT3_COPY_DW, 4, 0));
                        radeon_emit(cs, COPY_DW_SRC_IS_MEM | COPY_DW_DST_IS_REG);
                        radeon_emit(cs, va & 0xFFFFFFFFUL);     /* src address lo */
                        radeon_emit(cs, (va >> 32UL) & 0xFFUL); /* src address hi */
                        radeon_emit(cs, R_028B2C_VGT_STRMOUT_DRAW_OPAQUE_BUFFER_FILLED_SIZE >> 2); /* dst register */
                        radeon_emit(cs, 0); /* unused */

                        radeon_emit(cs, PKT3(PKT3_NOP, 0, 0));
                        radeon_emit(cs, radeon_add_to_buffer_list(&rctx->b, &rctx->b.gfx,
                                                                  t->buf_filled_size, RADEON_USAGE_READ,
                                                                  RADEON_PRIO_SO_FILLED_SIZE));
                }

                if (likely(!info.indirect)) {
                        radeon_emit(cs, PKT3(PKT3_DRAW_INDEX_AUTO, 1, render_cond_bit));
                        radeon_emit(cs, info.count);
                }
                else {
                        radeon_emit(cs, PKT3(EG_PKT3_DRAW_INDIRECT, 1, render_cond_bit));
                        radeon_emit(cs, info.indirect_offset);
                }
                radeon_emit(cs, V_0287F0_DI_SRC_SEL_AUTO_INDEX |
                                (info.count_from_stream_output ? S_0287F0_USE_OPAQUE(1) : 0));
        }

        /* SMX returns CONTEXT_DONE too early workaround */
        if (rctx->b.family == CHIP_R600 ||
            rctx->b.family == CHIP_RV610 ||
            rctx->b.family == CHIP_RV630 ||
            rctx->b.family == CHIP_RV635) {
                /* if we have gs shader or streamout
                   we need to do a wait idle after every draw */
                if (rctx->gs_shader || r600_get_strmout_en(&rctx->b)) {
                        radeon_set_config_reg(cs, R_008040_WAIT_UNTIL, S_008040_WAIT_3D_IDLE(1));
                }
        }

        /* ES ring rolling over at EOP - workaround */
        if (rctx->b.chip_class == R600) {
                radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0));
                radeon_emit(cs, EVENT_TYPE(EVENT_TYPE_SQ_NON_EVENT));
        }

        /* Set the depth buffer as dirty. */
        if (rctx->framebuffer.state.zsbuf) {
                struct pipe_surface *surf = rctx->framebuffer.state.zsbuf;
                struct r600_texture *rtex = (struct r600_texture *)surf->texture;

                rtex->dirty_level_mask |= 1 << surf->u.tex.level;

                if (rtex->surface.flags & RADEON_SURF_SBUFFER)
                        rtex->stencil_dirty_level_mask |= 1 << surf->u.tex.level;
        }
        if (rctx->framebuffer.compressed_cb_mask) {
                struct pipe_surface *surf;
                struct r600_texture *rtex;
                unsigned mask = rctx->framebuffer.compressed_cb_mask;

                do {
                        unsigned i = u_bit_scan(&mask);
                        surf = rctx->framebuffer.state.cbufs[i];
                        rtex = (struct r600_texture*)surf->texture;

                        rtex->dirty_level_mask |= 1 << surf->u.tex.level;

                } while (mask);
        }

        pipe_resource_reference(&ib.buffer, NULL);
        rctx->b.num_draw_calls++;
}

uint32_t r600_translate_stencil_op(int s_op)
{
        switch (s_op) {
        case PIPE_STENCIL_OP_KEEP:
                return V_028800_STENCIL_KEEP;
        case PIPE_STENCIL_OP_ZERO:
                return V_028800_STENCIL_ZERO;
        case PIPE_STENCIL_OP_REPLACE:
                return V_028800_STENCIL_REPLACE;
        case PIPE_STENCIL_OP_INCR:
                return V_028800_STENCIL_INCR;
        case PIPE_STENCIL_OP_DECR:
                return V_028800_STENCIL_DECR;
        case PIPE_STENCIL_OP_INCR_WRAP:
                return V_028800_STENCIL_INCR_WRAP;
        case PIPE_STENCIL_OP_DECR_WRAP:
                return V_028800_STENCIL_DECR_WRAP;
        case PIPE_STENCIL_OP_INVERT:
                return V_028800_STENCIL_INVERT;
        default:
                R600_ERR("Unknown stencil op %d", s_op);
                assert(0);
                break;
        }
        return 0;
}

uint32_t r600_translate_fill(uint32_t func)
{
        switch(func) {
        case PIPE_POLYGON_MODE_FILL:
                return 2;
        case PIPE_POLYGON_MODE_LINE:
                return 1;
        case PIPE_POLYGON_MODE_POINT:
                return 0;
        default:
                assert(0);
                return 0;
        }
}

unsigned r600_tex_wrap(unsigned wrap)
{
        switch (wrap) {
        default:
        case PIPE_TEX_WRAP_REPEAT:
                return V_03C000_SQ_TEX_WRAP;
        case PIPE_TEX_WRAP_CLAMP:
                return V_03C000_SQ_TEX_CLAMP_HALF_BORDER;
        case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
                return V_03C000_SQ_TEX_CLAMP_LAST_TEXEL;
        case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
                return V_03C000_SQ_TEX_CLAMP_BORDER;
        case PIPE_TEX_WRAP_MIRROR_REPEAT:
                return V_03C000_SQ_TEX_MIRROR;
        case PIPE_TEX_WRAP_MIRROR_CLAMP:
                return V_03C000_SQ_TEX_MIRROR_ONCE_HALF_BORDER;
        case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
                return V_03C000_SQ_TEX_MIRROR_ONCE_LAST_TEXEL;
        case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
                return V_03C000_SQ_TEX_MIRROR_ONCE_BORDER;
        }
}

unsigned r600_tex_mipfilter(unsigned filter)
{
        switch (filter) {
        case PIPE_TEX_MIPFILTER_NEAREST:
                return V_03C000_SQ_TEX_Z_FILTER_POINT;
        case PIPE_TEX_MIPFILTER_LINEAR:
                return V_03C000_SQ_TEX_Z_FILTER_LINEAR;
        default:
        case PIPE_TEX_MIPFILTER_NONE:
                return V_03C000_SQ_TEX_Z_FILTER_NONE;
        }
}

unsigned r600_tex_compare(unsigned compare)
{
        switch (compare) {
        default:
        case PIPE_FUNC_NEVER:
                return V_03C000_SQ_TEX_DEPTH_COMPARE_NEVER;
        case PIPE_FUNC_LESS:
                return V_03C000_SQ_TEX_DEPTH_COMPARE_LESS;
        case PIPE_FUNC_EQUAL:
                return V_03C000_SQ_TEX_DEPTH_COMPARE_EQUAL;
        case PIPE_FUNC_LEQUAL:
                return V_03C000_SQ_TEX_DEPTH_COMPARE_LESSEQUAL;
        case PIPE_FUNC_GREATER:
                return V_03C000_SQ_TEX_DEPTH_COMPARE_GREATER;
        case PIPE_FUNC_NOTEQUAL:
                return V_03C000_SQ_TEX_DEPTH_COMPARE_NOTEQUAL;
        case PIPE_FUNC_GEQUAL:
                return V_03C000_SQ_TEX_DEPTH_COMPARE_GREATEREQUAL;
        case PIPE_FUNC_ALWAYS:
                return V_03C000_SQ_TEX_DEPTH_COMPARE_ALWAYS;
        }
}

static bool wrap_mode_uses_border_color(unsigned wrap, bool linear_filter)
{
        return wrap == PIPE_TEX_WRAP_CLAMP_TO_BORDER ||
               wrap == PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER ||
               (linear_filter &&
                (wrap == PIPE_TEX_WRAP_CLAMP ||
                 wrap == PIPE_TEX_WRAP_MIRROR_CLAMP));
}

bool sampler_state_needs_border_color(const struct pipe_sampler_state *state)
{
        bool linear_filter = state->min_img_filter != PIPE_TEX_FILTER_NEAREST ||
                             state->mag_img_filter != PIPE_TEX_FILTER_NEAREST;

        return (state->border_color.ui[0] || state->border_color.ui[1] ||
                state->border_color.ui[2] || state->border_color.ui[3]) &&
               (wrap_mode_uses_border_color(state->wrap_s, linear_filter) ||
                wrap_mode_uses_border_color(state->wrap_t, linear_filter) ||
                wrap_mode_uses_border_color(state->wrap_r, linear_filter));
}

void r600_emit_shader(struct r600_context *rctx, struct r600_atom *a)
{

        struct radeon_winsys_cs *cs = rctx->b.gfx.cs;
        struct r600_pipe_shader *shader = ((struct r600_shader_state*)a)->shader;

        if (!shader)
                return;

        r600_emit_command_buffer(cs, &shader->command_buffer);
        radeon_emit(cs, PKT3(PKT3_NOP, 0, 0));
        radeon_emit(cs, radeon_add_to_buffer_list(&rctx->b, &rctx->b.gfx, shader->bo,
                                              RADEON_USAGE_READ, RADEON_PRIO_SHADER_BINARY));
}

unsigned r600_get_swizzle_combined(const unsigned char *swizzle_format,
                                   const unsigned char *swizzle_view,
                                   boolean vtx)
{
        unsigned i;
        unsigned char swizzle[4];
        unsigned result = 0;
        const uint32_t tex_swizzle_shift[4] = {
                16, 19, 22, 25,
        };
        const uint32_t vtx_swizzle_shift[4] = {
                3, 6, 9, 12,
        };
        const uint32_t swizzle_bit[4] = {
                0, 1, 2, 3,
        };
        const uint32_t *swizzle_shift = tex_swizzle_shift;

        if (vtx)
                swizzle_shift = vtx_swizzle_shift;

        if (swizzle_view) {
                util_format_compose_swizzles(swizzle_format, swizzle_view, swizzle);
        } else {
                memcpy(swizzle, swizzle_format, 4);
        }

        /* Get swizzle. */
        for (i = 0; i < 4; i++) {
                switch (swizzle[i]) {
                case PIPE_SWIZZLE_Y:
                        result |= swizzle_bit[1] << swizzle_shift[i];
                        break;
                case PIPE_SWIZZLE_Z:
                        result |= swizzle_bit[2] << swizzle_shift[i];
                        break;
                case PIPE_SWIZZLE_W:
                        result |= swizzle_bit[3] << swizzle_shift[i];
                        break;
                case PIPE_SWIZZLE_0:
                        result |= V_038010_SQ_SEL_0 << swizzle_shift[i];
                        break;
                case PIPE_SWIZZLE_1:
                        result |= V_038010_SQ_SEL_1 << swizzle_shift[i];
                        break;
                default: /* PIPE_SWIZZLE_X */
                        result |= swizzle_bit[0] << swizzle_shift[i];
                }
        }
        return result;
}

/* texture format translate */
uint32_t r600_translate_texformat(struct pipe_screen *screen,
                                  enum pipe_format format,
                                  const unsigned char *swizzle_view,
                                  uint32_t *word4_p, uint32_t *yuv_format_p,
                                  bool do_endian_swap)
{
        struct r600_screen *rscreen = (struct r600_screen *)screen;
        uint32_t result = 0, word4 = 0, yuv_format = 0;
        const struct util_format_description *desc;
        boolean uniform = TRUE;
        bool is_srgb_valid = FALSE;
        const unsigned char swizzle_xxxx[4] = {0, 0, 0, 0};
        const unsigned char swizzle_yyyy[4] = {1, 1, 1, 1};
        const unsigned char swizzle_xxxy[4] = {0, 0, 0, 1};
        const unsigned char swizzle_zyx1[4] = {2, 1, 0, 5};
        const unsigned char swizzle_zyxw[4] = {2, 1, 0, 3};

        int i;
        const uint32_t sign_bit[4] = {
                S_038010_FORMAT_COMP_X(V_038010_SQ_FORMAT_COMP_SIGNED),
                S_038010_FORMAT_COMP_Y(V_038010_SQ_FORMAT_COMP_SIGNED),
                S_038010_FORMAT_COMP_Z(V_038010_SQ_FORMAT_COMP_SIGNED),
                S_038010_FORMAT_COMP_W(V_038010_SQ_FORMAT_COMP_SIGNED)
        };

        /* Need to replace the specified texture formats in case of big-endian.
         * These formats are formats that have channels with number of bits
         * not divisible by 8.
         * Mesa conversion functions don't swap bits for those formats, and because
         * we transmit this over a serial bus to the GPU (PCIe), the
         * bit-endianess is important!!!
         * In case we have an "opposite" format, just use that for the swizzling
         * information. If we don't have such an "opposite" format, we need
         * to use a fixed swizzle info instead (see below)
         */
        if (format == PIPE_FORMAT_R4A4_UNORM && do_endian_swap)
                format = PIPE_FORMAT_A4R4_UNORM;

        desc = util_format_description(format);

        /* Depth and stencil swizzling is handled separately. */
        if (desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS) {
                /* Need to check for specific texture formats that don't have
                 * an "opposite" format we can use. For those formats, we directly
                 * specify the swizzling, which is the LE swizzling as defined in
                 * u_format.csv
                 */
                if (do_endian_swap) {
                        if (format == PIPE_FORMAT_L4A4_UNORM)
                                word4 |= r600_get_swizzle_combined(swizzle_xxxy, swizzle_view, FALSE);
                        else if (format == PIPE_FORMAT_B4G4R4A4_UNORM)
                                word4 |= r600_get_swizzle_combined(swizzle_zyxw, swizzle_view, FALSE);
                        else if (format == PIPE_FORMAT_B4G4R4X4_UNORM || format == PIPE_FORMAT_B5G6R5_UNORM)
                                word4 |= r600_get_swizzle_combined(swizzle_zyx1, swizzle_view, FALSE);
                        else
                                word4 |= r600_get_swizzle_combined(desc->swizzle, swizzle_view, FALSE);
                } else {
                        word4 |= r600_get_swizzle_combined(desc->swizzle, swizzle_view, FALSE);
                }
        }

        /* Colorspace (return non-RGB formats directly). */
        switch (desc->colorspace) {
        /* Depth stencil formats */
        case UTIL_FORMAT_COLORSPACE_ZS:
                switch (format) {
                /* Depth sampler formats. */
                case PIPE_FORMAT_Z16_UNORM:
                        word4 |= r600_get_swizzle_combined(swizzle_xxxx, swizzle_view, FALSE);
                        result = FMT_16;
                        goto out_word4;
                case PIPE_FORMAT_Z24X8_UNORM:
                case PIPE_FORMAT_Z24_UNORM_S8_UINT:
                        word4 |= r600_get_swizzle_combined(swizzle_xxxx, swizzle_view, FALSE);
                        result = FMT_8_24;
                        goto out_word4;
                case PIPE_FORMAT_X8Z24_UNORM:
                case PIPE_FORMAT_S8_UINT_Z24_UNORM:
                        if (rscreen->b.chip_class < EVERGREEN)
                                goto out_unknown;
                        word4 |= r600_get_swizzle_combined(swizzle_yyyy, swizzle_view, FALSE);
                        result = FMT_24_8;
                        goto out_word4;
                case PIPE_FORMAT_Z32_FLOAT:
                        word4 |= r600_get_swizzle_combined(swizzle_xxxx, swizzle_view, FALSE);
                        result = FMT_32_FLOAT;
                        goto out_word4;
                case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
                        word4 |= r600_get_swizzle_combined(swizzle_xxxx, swizzle_view, FALSE);
                        result = FMT_X24_8_32_FLOAT;
                        goto out_word4;
                /* Stencil sampler formats. */
                case PIPE_FORMAT_S8_UINT:
                        word4 |= S_038010_NUM_FORMAT_ALL(V_038010_SQ_NUM_FORMAT_INT);
                        word4 |= r600_get_swizzle_combined(swizzle_xxxx, swizzle_view, FALSE);
                        result = FMT_8;
                        goto out_word4;
                case PIPE_FORMAT_X24S8_UINT:
                        word4 |= S_038010_NUM_FORMAT_ALL(V_038010_SQ_NUM_FORMAT_INT);
                        word4 |= r600_get_swizzle_combined(swizzle_yyyy, swizzle_view, FALSE);
                        result = FMT_8_24;
                        goto out_word4;
                case PIPE_FORMAT_S8X24_UINT:
                        if (rscreen->b.chip_class < EVERGREEN)
                                goto out_unknown;
                        word4 |= S_038010_NUM_FORMAT_ALL(V_038010_SQ_NUM_FORMAT_INT);
                        word4 |= r600_get_swizzle_combined(swizzle_xxxx, swizzle_view, FALSE);
                        result = FMT_24_8;
                        goto out_word4;
                case PIPE_FORMAT_X32_S8X24_UINT:
                        word4 |= S_038010_NUM_FORMAT_ALL(V_038010_SQ_NUM_FORMAT_INT);
                        word4 |= r600_get_swizzle_combined(swizzle_yyyy, swizzle_view, FALSE);
                        result = FMT_X24_8_32_FLOAT;
                        goto out_word4;
                default:
                        goto out_unknown;
                }

        case UTIL_FORMAT_COLORSPACE_YUV:
                yuv_format |= (1 << 30);
                switch (format) {
                case PIPE_FORMAT_UYVY:
                case PIPE_FORMAT_YUYV:
                default:
                        break;
                }
                goto out_unknown; /* XXX */

        case UTIL_FORMAT_COLORSPACE_SRGB:
                word4 |= S_038010_FORCE_DEGAMMA(1);
                break;

        default:
                break;
        }

        if (desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
                switch (format) {
                case PIPE_FORMAT_RGTC1_SNORM:
                case PIPE_FORMAT_LATC1_SNORM:
                        word4 |= sign_bit[0];
                case PIPE_FORMAT_RGTC1_UNORM:
                case PIPE_FORMAT_LATC1_UNORM:
                        result = FMT_BC4;
                        goto out_word4;
                case PIPE_FORMAT_RGTC2_SNORM:
                case PIPE_FORMAT_LATC2_SNORM:
                        word4 |= sign_bit[0] | sign_bit[1];
                case PIPE_FORMAT_RGTC2_UNORM:
                case PIPE_FORMAT_LATC2_UNORM:
                        result = FMT_BC5;
                        goto out_word4;
                default:
                        goto out_unknown;
                }
        }

        if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
                if (!util_format_s3tc_enabled) {
                        goto out_unknown;
                }

                switch (format) {
                case PIPE_FORMAT_DXT1_RGB:
                case PIPE_FORMAT_DXT1_RGBA:
                case PIPE_FORMAT_DXT1_SRGB:
                case PIPE_FORMAT_DXT1_SRGBA:
                        result = FMT_BC1;
                        is_srgb_valid = TRUE;
                        goto out_word4;
                case PIPE_FORMAT_DXT3_RGBA:
                case PIPE_FORMAT_DXT3_SRGBA:
                        result = FMT_BC2;
                        is_srgb_valid = TRUE;
                        goto out_word4;
                case PIPE_FORMAT_DXT5_RGBA:
                case PIPE_FORMAT_DXT5_SRGBA:
                        result = FMT_BC3;
                        is_srgb_valid = TRUE;
                        goto out_word4;
                default:
                        goto out_unknown;
                }
        }

        if (desc->layout == UTIL_FORMAT_LAYOUT_BPTC) {
                if (rscreen->b.chip_class < EVERGREEN)
                        goto out_unknown;

                switch (format) {
                        case PIPE_FORMAT_BPTC_RGBA_UNORM:
                        case PIPE_FORMAT_BPTC_SRGBA:
                                result = FMT_BC7;
                                is_srgb_valid = TRUE;
                                goto out_word4;
                        case PIPE_FORMAT_BPTC_RGB_FLOAT:
                                word4 |= sign_bit[0] | sign_bit[1] | sign_bit[2];
                                /* fall through */
                        case PIPE_FORMAT_BPTC_RGB_UFLOAT:
                                result = FMT_BC6;
                                goto out_word4;
                        default:
                                goto out_unknown;
                }
        }

        if (desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED) {
                switch (format) {
                case PIPE_FORMAT_R8G8_B8G8_UNORM:
                case PIPE_FORMAT_G8R8_B8R8_UNORM:
                        result = FMT_GB_GR;
                        goto out_word4;
                case PIPE_FORMAT_G8R8_G8B8_UNORM:
                case PIPE_FORMAT_R8G8_R8B8_UNORM:
                        result = FMT_BG_RG;
                        goto out_word4;
                default:
                        goto out_unknown;
                }
        }

        if (format == PIPE_FORMAT_R9G9B9E5_FLOAT) {
                result = FMT_5_9_9_9_SHAREDEXP;
                goto out_word4;
        } else if (format == PIPE_FORMAT_R11G11B10_FLOAT) {
                result = FMT_10_11_11_FLOAT;
                goto out_word4;
        }


        for (i = 0; i < desc->nr_channels; i++) {
                if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
                        word4 |= sign_bit[i];
                }
        }

        /* R8G8Bx_SNORM - XXX CxV8U8 */

        /* See whether the components are of the same size. */
        for (i = 1; i < desc->nr_channels; i++) {
                uniform = uniform && desc->channel[0].size == desc->channel[i].size;
        }

        /* Non-uniform formats. */
        if (!uniform) {
                if (desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB &&
                    desc->channel[0].pure_integer)
                        word4 |= S_038010_NUM_FORMAT_ALL(V_038010_SQ_NUM_FORMAT_INT);
                switch(desc->nr_channels) {
                case 3:
                        if (desc->channel[0].size == 5 &&
                            desc->channel[1].size == 6 &&
                            desc->channel[2].size == 5) {
                                result = FMT_5_6_5;
                                goto out_word4;
                        }
                        goto out_unknown;
                case 4:
                        if (desc->channel[0].size == 5 &&
                            desc->channel[1].size == 5 &&
                            desc->channel[2].size == 5 &&
                            desc->channel[3].size == 1) {
                                result = FMT_1_5_5_5;
                                goto out_word4;
                        }
                        if (desc->channel[0].size == 10 &&
                            desc->channel[1].size == 10 &&
                            desc->channel[2].size == 10 &&
                            desc->channel[3].size == 2) {
                                result = FMT_2_10_10_10;
                                goto out_word4;
                        }
                        goto out_unknown;
                }
                goto out_unknown;
        }

        /* Find the first non-VOID channel. */
        for (i = 0; i < 4; i++) {
                if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
                        break;
                }
        }

        if (i == 4)
                goto out_unknown;

        /* uniform formats */
        switch (desc->channel[i].type) {
        case UTIL_FORMAT_TYPE_UNSIGNED:
        case UTIL_FORMAT_TYPE_SIGNED:
#if 0
                if (!desc->channel[i].normalized &&
                    desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
                        goto out_unknown;
                }
#endif
                if (desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB &&
                    desc->channel[i].pure_integer)
                        word4 |= S_038010_NUM_FORMAT_ALL(V_038010_SQ_NUM_FORMAT_INT);

                switch (desc->channel[i].size) {
                case 4:
                        switch (desc->nr_channels) {
                        case 2:
                                result = FMT_4_4;
                                goto out_word4;
                        case 4:
                                result = FMT_4_4_4_4;
                                goto out_word4;
                        }
                        goto out_unknown;
                case 8:
                        switch (desc->nr_channels) {
                        case 1:
                                result = FMT_8;
                                goto out_word4;
                        case 2:
                                result = FMT_8_8;
                                goto out_word4;
                        case 4:
                                result = FMT_8_8_8_8;
                                is_srgb_valid = TRUE;
                                goto out_word4;
                        }
                        goto out_unknown;
                case 16:
                        switch (desc->nr_channels) {
                        case 1:
                                result = FMT_16;
                                goto out_word4;
                        case 2:
                                result = FMT_16_16;
                                goto out_word4;
                        case 4:
                                result = FMT_16_16_16_16;
                                goto out_word4;
                        }
                        goto out_unknown;
                case 32:
                        switch (desc->nr_channels) {
                        case 1:
                                result = FMT_32;
                                goto out_word4;
                        case 2:
                                result = FMT_32_32;
                                goto out_word4;
                        case 4:
                                result = FMT_32_32_32_32;
                                goto out_word4;
                        }
                }
                goto out_unknown;

        case UTIL_FORMAT_TYPE_FLOAT:
                switch (desc->channel[i].size) {
                case 16:
                        switch (desc->nr_channels) {
                        case 1:
                                result = FMT_16_FLOAT;
                                goto out_word4;
                        case 2:
                                result = FMT_16_16_FLOAT;
                                goto out_word4;
                        case 4:
                                result = FMT_16_16_16_16_FLOAT;
                                goto out_word4;
                        }
                        goto out_unknown;
                case 32:
                        switch (desc->nr_channels) {
                        case 1:
                                result = FMT_32_FLOAT;
                                goto out_word4;
                        case 2:
                                result = FMT_32_32_FLOAT;
                                goto out_word4;
                        case 4:
                                result = FMT_32_32_32_32_FLOAT;
                                goto out_word4;
                        }
                }
                goto out_unknown;
        }

out_word4:

        if (desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB && !is_srgb_valid)
                return ~0;
        if (word4_p)
                *word4_p = word4;
        if (yuv_format_p)
                *yuv_format_p = yuv_format;
        return result;
out_unknown:
        /* R600_ERR("Unable to handle texformat %d %s\n", format, util_format_name(format)); */
        return ~0;
}

uint32_t r600_translate_colorformat(enum chip_class chip, enum pipe_format format,
                                                bool do_endian_swap)
{
        const struct util_format_description *desc = util_format_description(format);
        int channel = util_format_get_first_non_void_channel(format);
        bool is_float;

#define HAS_SIZE(x,y,z,w) \
        (desc->channel[0].size == (x) && desc->channel[1].size == (y) && \
         desc->channel[2].size == (z) && desc->channel[3].size == (w))

        if (format == PIPE_FORMAT_R11G11B10_FLOAT) /* isn't plain */
                return V_0280A0_COLOR_10_11_11_FLOAT;

        if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN ||
            channel == -1)
                return ~0U;

        is_float = desc->channel[channel].type == UTIL_FORMAT_TYPE_FLOAT;

        switch (desc->nr_channels) {
        case 1:
                switch (desc->channel[0].size) {
                case 8:
                        return V_0280A0_COLOR_8;
                case 16:
                        if (is_float)
                                return V_0280A0_COLOR_16_FLOAT;
                        else
                                return V_0280A0_COLOR_16;
                case 32:
                        if (is_float)
                                return V_0280A0_COLOR_32_FLOAT;
                        else
                                return V_0280A0_COLOR_32;
                }
                break;
        case 2:
                if (desc->channel[0].size == desc->channel[1].size) {
                        switch (desc->channel[0].size) {
                        case 4:
                                if (chip <= R700)
                                        return V_0280A0_COLOR_4_4;
                                else
                                        return ~0U; /* removed on Evergreen */
                        case 8:
                                return V_0280A0_COLOR_8_8;
                        case 16:
                                if (is_float)
                                        return V_0280A0_COLOR_16_16_FLOAT;
                                else
                                        return V_0280A0_COLOR_16_16;
                        case 32:
                                if (is_float)
                                        return V_0280A0_COLOR_32_32_FLOAT;
                                else
                                        return V_0280A0_COLOR_32_32;
                        }
                } else if (HAS_SIZE(8,24,0,0)) {
                        return (do_endian_swap ? V_0280A0_COLOR_8_24 : V_0280A0_COLOR_24_8);
                } else if (HAS_SIZE(24,8,0,0)) {
                        return V_0280A0_COLOR_8_24;
                }
                break;
        case 3:
                if (HAS_SIZE(5,6,5,0)) {
                        return V_0280A0_COLOR_5_6_5;
                } else if (HAS_SIZE(32,8,24,0)) {
                        return V_0280A0_COLOR_X24_8_32_FLOAT;
                }
                break;
        case 4:
                if (desc->channel[0].size == desc->channel[1].size &&
                    desc->channel[0].size == desc->channel[2].size &&
                    desc->channel[0].size == desc->channel[3].size) {
                        switch (desc->channel[0].size) {
                        case 4:
                                return V_0280A0_COLOR_4_4_4_4;
                        case 8:
                                return V_0280A0_COLOR_8_8_8_8;
                        case 16:
                                if (is_float)
                                        return V_0280A0_COLOR_16_16_16_16_FLOAT;
                                else
                                        return V_0280A0_COLOR_16_16_16_16;
                        case 32:
                                if (is_float)
                                        return V_0280A0_COLOR_32_32_32_32_FLOAT;
                                else
                                        return V_0280A0_COLOR_32_32_32_32;
                        }
                } else if (HAS_SIZE(5,5,5,1)) {
                        return V_0280A0_COLOR_1_5_5_5;
                } else if (HAS_SIZE(10,10,10,2)) {
                        return V_0280A0_COLOR_2_10_10_10;
                }
                break;
        }
        return ~0U;
}

uint32_t r600_colorformat_endian_swap(uint32_t colorformat, bool do_endian_swap)
{
        if (R600_BIG_ENDIAN) {
                switch(colorformat) {
                /* 8-bit buffers. */
                case V_0280A0_COLOR_4_4:
                case V_0280A0_COLOR_8:
                        return ENDIAN_NONE;

                /* 16-bit buffers. */
                case V_0280A0_COLOR_8_8:
                        /*
                         * No need to do endian swaps on array formats,
                         * as mesa<-->pipe formats conversion take into account
                         * the endianess
                         */
                        return ENDIAN_NONE;

                case V_0280A0_COLOR_5_6_5:
                case V_0280A0_COLOR_1_5_5_5:
                case V_0280A0_COLOR_4_4_4_4:
                case V_0280A0_COLOR_16:
                        return (do_endian_swap ? ENDIAN_8IN16 : ENDIAN_NONE);

                /* 32-bit buffers. */
                case V_0280A0_COLOR_8_8_8_8:
                        /*
                         * No need to do endian swaps on array formats,
                         * as mesa<-->pipe formats conversion take into account
                         * the endianess
                         */
                        return ENDIAN_NONE;

                case V_0280A0_COLOR_2_10_10_10:
                case V_0280A0_COLOR_8_24:
                case V_0280A0_COLOR_24_8:
                case V_0280A0_COLOR_32_FLOAT:
                        return (do_endian_swap ? ENDIAN_8IN32 : ENDIAN_NONE);

                case V_0280A0_COLOR_16_16_FLOAT:
                case V_0280A0_COLOR_16_16:
                        return ENDIAN_8IN16;

                /* 64-bit buffers. */
                case V_0280A0_COLOR_16_16_16_16:
                case V_0280A0_COLOR_16_16_16_16_FLOAT:
                        return ENDIAN_8IN16;

                case V_0280A0_COLOR_32_32_FLOAT:
                case V_0280A0_COLOR_32_32:
                case V_0280A0_COLOR_X24_8_32_FLOAT:
                        return ENDIAN_8IN32;

                /* 128-bit buffers. */
                case V_0280A0_COLOR_32_32_32_32_FLOAT:
                case V_0280A0_COLOR_32_32_32_32:
                        return ENDIAN_8IN32;
                default:
                        return ENDIAN_NONE; /* Unsupported. */
                }
        } else {
                return ENDIAN_NONE;
        }
}

static void r600_invalidate_buffer(struct pipe_context *ctx, struct pipe_resource *buf)
{
        struct r600_context *rctx = (struct r600_context*)ctx;
        struct r600_resource *rbuffer = r600_resource(buf);
        unsigned i, shader, mask;
        struct r600_pipe_sampler_view *view;

        /* Reallocate the buffer in the same pipe_resource. */
        r600_alloc_resource(&rctx->screen->b, rbuffer);

        /* We changed the buffer, now we need to bind it where the old one was bound. */
        /* Vertex buffers. */
        mask = rctx->vertex_buffer_state.enabled_mask;
        while (mask) {
                i = u_bit_scan(&mask);
                if (rctx->vertex_buffer_state.vb[i].buffer == &rbuffer->b.b) {
                        rctx->vertex_buffer_state.dirty_mask |= 1 << i;
                        r600_vertex_buffers_dirty(rctx);
                }
        }
        /* Streamout buffers. */
        for (i = 0; i < rctx->b.streamout.num_targets; i++) {
                if (rctx->b.streamout.targets[i] &&
                    rctx->b.streamout.targets[i]->b.buffer == &rbuffer->b.b) {
                        if (rctx->b.streamout.begin_emitted) {
                                r600_emit_streamout_end(&rctx->b);
                        }
                        rctx->b.streamout.append_bitmask = rctx->b.streamout.enabled_mask;
                        r600_streamout_buffers_dirty(&rctx->b);
                }
        }

        /* Constant buffers. */
        for (shader = 0; shader < PIPE_SHADER_TYPES; shader++) {
                struct r600_constbuf_state *state = &rctx->constbuf_state[shader];
                bool found = false;
                uint32_t mask = state->enabled_mask;

                while (mask) {
                        unsigned i = u_bit_scan(&mask);
                        if (state->cb[i].buffer == &rbuffer->b.b) {
                                found = true;
                                state->dirty_mask |= 1 << i;
                        }
                }
                if (found) {
                        r600_constant_buffers_dirty(rctx, state);
                }
        }

        /* Texture buffer objects - update the virtual addresses in descriptors. */
        LIST_FOR_EACH_ENTRY(view, &rctx->texture_buffers, list) {
                if (view->base.texture == &rbuffer->b.b) {
                        uint64_t offset = view->base.u.buf.offset;
                        uint64_t va = rbuffer->gpu_address + offset;

                        view->tex_resource_words[0] = va;
                        view->tex_resource_words[2] &= C_038008_BASE_ADDRESS_HI;
                        view->tex_resource_words[2] |= S_038008_BASE_ADDRESS_HI(va >> 32);
                }
        }
        /* Texture buffer objects - make bindings dirty if needed. */
        for (shader = 0; shader < PIPE_SHADER_TYPES; shader++) {
                struct r600_samplerview_state *state = &rctx->samplers[shader].views;
                bool found = false;
                uint32_t mask = state->enabled_mask;

                while (mask) {
                        unsigned i = u_bit_scan(&mask);
                        if (state->views[i]->base.texture == &rbuffer->b.b) {
                                found = true;
                                state->dirty_mask |= 1 << i;
                        }
                }
                if (found) {
                        r600_sampler_views_dirty(rctx, state);
                }
        }
}

static void r600_set_active_query_state(struct pipe_context *ctx, boolean enable)
{
        struct r600_context *rctx = (struct r600_context*)ctx;

        /* Pipeline stat & streamout queries. */
        if (enable) {
                rctx->b.flags &= ~R600_CONTEXT_STOP_PIPELINE_STATS;
                rctx->b.flags |= R600_CONTEXT_START_PIPELINE_STATS;
        } else {
                rctx->b.flags &= ~R600_CONTEXT_START_PIPELINE_STATS;
                rctx->b.flags |= R600_CONTEXT_STOP_PIPELINE_STATS;
        }

        /* Occlusion queries. */
        if (rctx->db_misc_state.occlusion_queries_disabled != !enable) {
                rctx->db_misc_state.occlusion_queries_disabled = !enable;
                r600_mark_atom_dirty(rctx, &rctx->db_misc_state.atom);
        }
}

static void r600_set_occlusion_query_state(struct pipe_context *ctx, bool enable)
{
        struct r600_context *rctx = (struct r600_context*)ctx;

        r600_mark_atom_dirty(rctx, &rctx->db_misc_state.atom);
}

static void r600_need_gfx_cs_space(struct pipe_context *ctx, unsigned num_dw,
                                   bool include_draw_vbo)
{
        r600_need_cs_space((struct r600_context*)ctx, num_dw, include_draw_vbo);
}

/* keep this at the end of this file, please */
void r600_init_common_state_functions(struct r600_context *rctx)
{
        rctx->b.b.create_fs_state = r600_create_ps_state;
        rctx->b.b.create_vs_state = r600_create_vs_state;
        rctx->b.b.create_gs_state = r600_create_gs_state;
        rctx->b.b.create_tcs_state = r600_create_tcs_state;
        rctx->b.b.create_tes_state = r600_create_tes_state;
        rctx->b.b.create_vertex_elements_state = r600_create_vertex_fetch_shader;
        rctx->b.b.bind_blend_state = r600_bind_blend_state;
        rctx->b.b.bind_depth_stencil_alpha_state = r600_bind_dsa_state;
        rctx->b.b.bind_sampler_states = r600_bind_sampler_states;
        rctx->b.b.bind_fs_state = r600_bind_ps_state;
        rctx->b.b.bind_rasterizer_state = r600_bind_rs_state;
        rctx->b.b.bind_vertex_elements_state = r600_bind_vertex_elements;
        rctx->b.b.bind_vs_state = r600_bind_vs_state;
        rctx->b.b.bind_gs_state = r600_bind_gs_state;
        rctx->b.b.bind_tcs_state = r600_bind_tcs_state;
        rctx->b.b.bind_tes_state = r600_bind_tes_state;
        rctx->b.b.delete_blend_state = r600_delete_blend_state;
        rctx->b.b.delete_depth_stencil_alpha_state = r600_delete_dsa_state;
        rctx->b.b.delete_fs_state = r600_delete_ps_state;
        rctx->b.b.delete_rasterizer_state = r600_delete_rs_state;
        rctx->b.b.delete_sampler_state = r600_delete_sampler_state;
        rctx->b.b.delete_vertex_elements_state = r600_delete_vertex_elements;
        rctx->b.b.delete_vs_state = r600_delete_vs_state;
        rctx->b.b.delete_gs_state = r600_delete_gs_state;
        rctx->b.b.delete_tcs_state = r600_delete_tcs_state;
        rctx->b.b.delete_tes_state = r600_delete_tes_state;
        rctx->b.b.set_blend_color = r600_set_blend_color;
        rctx->b.b.set_clip_state = r600_set_clip_state;
        rctx->b.b.set_constant_buffer = r600_set_constant_buffer;
        rctx->b.b.set_sample_mask = r600_set_sample_mask;
        rctx->b.b.set_stencil_ref = r600_set_pipe_stencil_ref;
        rctx->b.b.set_vertex_buffers = r600_set_vertex_buffers;
        rctx->b.b.set_index_buffer = r600_set_index_buffer;
        rctx->b.b.set_sampler_views = r600_set_sampler_views;
        rctx->b.b.sampler_view_destroy = r600_sampler_view_destroy;
        rctx->b.b.texture_barrier = r600_texture_barrier;
        rctx->b.b.set_stream_output_targets = r600_set_streamout_targets;
        rctx->b.b.set_active_query_state = r600_set_active_query_state;
        rctx->b.b.draw_vbo = r600_draw_vbo;
        rctx->b.invalidate_buffer = r600_invalidate_buffer;
        rctx->b.set_occlusion_query_state = r600_set_occlusion_query_state;
        rctx->b.need_gfx_cs_space = r600_need_gfx_cs_space;
}