path: root/src/gallium/drivers/r300/r300_context.c

/*
 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
 *
 * 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. */

#include "draw/draw_context.h"

#include "util/u_memory.h"
#include "util/u_sampler.h"
#include "util/u_simple_list.h"
#include "util/u_upload_mgr.h"

#include "r300_cb.h"
#include "r300_context.h"
#include "r300_emit.h"
#include "r300_screen.h"
#include "r300_screen_buffer.h"
#include "r300_state_invariant.h"
#include "r300_winsys.h"

#include <inttypes.h>

static void r300_destroy_context(struct pipe_context* context)
{
    struct r300_context* r300 = r300_context(context);
    struct r300_query *query, *temp;
    struct r300_atom *atom;

    if (r300->texkill_sampler) {
        pipe_sampler_view_reference(
                (struct pipe_sampler_view**)r300->texkill_sampler,
                NULL);
    }

    util_blitter_destroy(r300->blitter);
    draw_destroy(r300->draw);

    /* Print stats, if enabled. */
    if (SCREEN_DBG_ON(r300->screen, DBG_STATS)) {
        fprintf(stderr, "r300: Stats for context %p:\n", r300);
        fprintf(stderr, "    : Flushes: %" PRIu64 "\n", r300->flush_counter);
        foreach(atom, &r300->atom_list) {
            fprintf(stderr, "    : %s: %" PRIu64 " emits\n",
                atom->name, atom->counter);
        }
    }

    /* If there are any queries pending or not destroyed, remove them now. */
    foreach_s(query, temp, &r300->query_list) {
        remove_from_list(query);
        FREE(query);
    }

    u_upload_destroy(r300->upload_vb);
    u_upload_destroy(r300->upload_ib);

    translate_cache_destroy(r300->tran.translate_cache);

    FREE(r300->blend_color_state.state);
    FREE(r300->clip_state.state);
    FREE(r300->fb_state.state);
    FREE(r300->rs_block_state.state);
    FREE(r300->scissor_state.state);
    FREE(r300->textures_state.state);
    FREE(r300->viewport_state.state);
    FREE(r300->ztop_state.state);
    FREE(r300->fs_constants.state);
    FREE(r300->vs_constants.state);
    if (!r300->screen->caps.has_tcl) {
        FREE(r300->vertex_stream_state.state);
    }
    FREE(r300);
}

static void r300_flush_cb(void *data)
{
    struct r300_context* const cs_context_copy = data;

    cs_context_copy->context.flush(&cs_context_copy->context, 0, NULL);
}

#define R300_INIT_ATOM(atomname, atomsize) \
    r300->atomname.name = #atomname; \
    r300->atomname.state = NULL; \
    r300->atomname.size = atomsize; \
    r300->atomname.emit = r300_emit_##atomname; \
    r300->atomname.dirty = FALSE; \
    insert_at_tail(&r300->atom_list, &r300->atomname);

static void r300_setup_atoms(struct r300_context* r300)
{
    boolean is_r500 = r300->screen->caps.is_r500;
    boolean has_tcl = r300->screen->caps.has_tcl;

    /* Create the actual atom list.
     *
     * Each atom is examined and emitted in the order it appears here, which
     * can affect performance and conformance if not handled with care.
     *
     * Some atoms never change size, others change every emit - those have
     * the size of 0 here. */
    make_empty_list(&r300->atom_list);
    R300_INIT_ATOM(invariant_state, 71);
    R300_INIT_ATOM(ztop_state, 2);
    R300_INIT_ATOM(query_start, 4);
    R300_INIT_ATOM(blend_state, 8);
    R300_INIT_ATOM(blend_color_state, is_r500 ? 3 : 2);
    R300_INIT_ATOM(clip_state, has_tcl ? 5 + (6 * 4) : 2);
    R300_INIT_ATOM(dsa_state, is_r500 ? 8 : 6);
    R300_INIT_ATOM(fb_state, 0);
    R300_INIT_ATOM(rs_state, 0);
    R300_INIT_ATOM(scissor_state, 3);
    R300_INIT_ATOM(viewport_state, 9);
    R300_INIT_ATOM(rs_block_state, 0);
    R300_INIT_ATOM(vertex_stream_state, 0);
    R300_INIT_ATOM(pvs_flush, 2);
    R300_INIT_ATOM(vs_state, 0);
    R300_INIT_ATOM(vs_constants, 0);
    R300_INIT_ATOM(texture_cache_inval, 2);
    R300_INIT_ATOM(textures_state, 0);
    R300_INIT_ATOM(fs, 0);
    R300_INIT_ATOM(fs_rc_constant_state, 0);
    R300_INIT_ATOM(fs_constants, 0);

    /* Replace emission functions for r500. */
    if (r300->screen->caps.is_r500) {
        r300->fs.emit = r500_emit_fs;
        r300->fs_rc_constant_state.emit = r500_emit_fs_rc_constant_state;
        r300->fs_constants.emit = r500_emit_fs_constants;
    }

    /* Some non-CSO atoms need explicit space to store the state locally. */
    r300->blend_color_state.state = CALLOC_STRUCT(r300_blend_color_state);
    r300->clip_state.state = CALLOC_STRUCT(r300_clip_state);
    r300->fb_state.state = CALLOC_STRUCT(pipe_framebuffer_state);
    r300->rs_block_state.state = CALLOC_STRUCT(r300_rs_block);
    r300->scissor_state.state = CALLOC_STRUCT(pipe_scissor_state);
    r300->textures_state.state = CALLOC_STRUCT(r300_textures_state);
    r300->viewport_state.state = CALLOC_STRUCT(r300_viewport_state);
    r300->ztop_state.state = CALLOC_STRUCT(r300_ztop_state);
    r300->fs_constants.state = CALLOC_STRUCT(r300_constant_buffer);
    r300->vs_constants.state = CALLOC_STRUCT(r300_constant_buffer);
    if (!r300->screen->caps.has_tcl) {
        r300->vertex_stream_state.state = CALLOC_STRUCT(r300_vertex_stream_state);
    }

    /* Some non-CSO atoms don't use the state pointer. */
    r300->invariant_state.allow_null_state = TRUE;
    r300->fs_rc_constant_state.allow_null_state = TRUE;
    r300->pvs_flush.allow_null_state = TRUE;
    r300->query_start.allow_null_state = TRUE;
    r300->texture_cache_inval.allow_null_state = TRUE;
}

/* Not every state tracker calls every driver function before the first draw
 * call and we must initialize the command buffers somehow. */
static void r300_init_states(struct pipe_context *pipe)
{
    struct pipe_blend_color bc = {{0}};
    struct pipe_clip_state cs = {{{0}}};
    struct pipe_scissor_state ss = {0};
    struct r300_clip_state *clip =
            (struct r300_clip_state*)r300_context(pipe)->clip_state.state;
    CB_LOCALS;

    pipe->set_blend_color(pipe, &bc);
    pipe->set_scissor_state(pipe, &ss);

    if (r300_context(pipe)->screen->caps.has_tcl) {
        pipe->set_clip_state(pipe, &cs);
    } else {
        BEGIN_CB(clip->cb, 2);
        OUT_CB_REG(R300_VAP_CLIP_CNTL, R300_CLIP_DISABLE);
        END_CB;
    }
}

struct pipe_context* r300_create_context(struct pipe_screen* screen,
                                         void *priv)
{
    struct r300_context* r300 = CALLOC_STRUCT(r300_context);
    struct r300_screen* r300screen = r300_screen(screen);
    struct r300_winsys_screen *rws = r300screen->rws;

    if (!r300)
        return NULL;

    r300->rws = rws;
    r300->screen = r300screen;

    r300->context.winsys = (struct pipe_winsys*)rws;
    r300->context.screen = screen;
    r300->context.priv = priv;

    r300->context.destroy = r300_destroy_context;

    if (!r300screen->caps.has_tcl) {
        /* Create a Draw. This is used for SW TCL. */
        r300->draw = draw_create(&r300->context);
        /* Enable our renderer. */
        draw_set_rasterize_stage(r300->draw, r300_draw_stage(r300));
        /* Enable Draw's clipping. */
        draw_set_driver_clipping(r300->draw, FALSE);
        /* Disable converting points/lines to triangles. */
        draw_wide_line_threshold(r300->draw, 10000000.f);
        draw_wide_point_threshold(r300->draw, 10000000.f);
    }

    r300_setup_atoms(r300);

    make_empty_list(&r300->query_list);

    r300_init_blit_functions(r300);
    r300_init_flush_functions(r300);
    r300_init_query_functions(r300);
    r300_init_render_functions(r300);
    r300_init_state_functions(r300);
    r300_init_resource_functions(r300);

    r300->invariant_state.dirty = TRUE;

    rws->set_flush_cb(r300->rws, r300_flush_cb, r300);
    r300->dirty_hw++;

    r300->blitter = util_blitter_create(&r300->context);

    r300->upload_ib = u_upload_create(&r300->context,
				      32 * 1024, 16,
				      PIPE_BIND_INDEX_BUFFER);

    if (r300->upload_ib == NULL)
        goto no_upload_ib;

    r300->upload_vb = u_upload_create(&r300->context,
				      128 * 1024, 16,
				      PIPE_BIND_VERTEX_BUFFER);
    if (r300->upload_vb == NULL)
        goto no_upload_vb;

    r300->tran.translate_cache = translate_cache_create();

    r300_init_states(&r300->context);

    /* The KIL opcode needs the first texture unit to be enabled
     * on r3xx-r4xx. In order to calm down the CS checker, we bind this
     * dummy texture there. */
    if (!r300->screen->caps.is_r500) {
        struct pipe_resource *tex;
        struct pipe_resource rtempl = {{0}};
        struct pipe_sampler_view vtempl = {{0}};

        rtempl.target = PIPE_TEXTURE_2D;
        rtempl.format = PIPE_FORMAT_I8_UNORM;
        rtempl.bind = PIPE_BIND_SAMPLER_VIEW;
        rtempl.width0 = 1;
        rtempl.height0 = 1;
        rtempl.depth0 = 1;
        tex = screen->resource_create(screen, &rtempl);

        u_sampler_view_default_template(&vtempl, tex, tex->format);

        r300->texkill_sampler = (struct r300_sampler_view*)
            r300->context.create_sampler_view(&r300->context, tex, &vtempl);

        pipe_resource_reference(&tex, NULL);

        /* This will make sure that the dummy texture is set up
         * from the beginning even if an application does not use
         * textures. */
        r300->textures_state.dirty = TRUE;
    }

    return &r300->context;

 no_upload_ib:
    u_upload_destroy(r300->upload_ib);
 no_upload_vb:
    FREE(r300);
    return NULL;
}

boolean r300_check_cs(struct r300_context *r300, unsigned size)
{
    return size <= r300->rws->get_cs_free_dwords(r300->rws);
}

void r300_finish(struct r300_context *r300)
{
    struct pipe_framebuffer_state *fb;
    unsigned i;

    /* This is a preliminary implementation of glFinish.
     *
     * The ideal implementation should use something like EmitIrqLocked and
     * WaitIrq, or better, real fences.
     */
    if (r300->fb_state.state) {
        fb = r300->fb_state.state;

        for (i = 0; i < fb->nr_cbufs; i++) {
            if (fb->cbufs[i]->texture) {
                r300->rws->buffer_wait(r300->rws,
                    r300_texture(fb->cbufs[i]->texture)->buffer);
                return;
            }
        }
        if (fb->zsbuf && fb->zsbuf->texture) {
            r300->rws->buffer_wait(r300->rws,
                r300_texture(fb->zsbuf->texture)->buffer);
        }
    }
}