C++ CS_LOCALS函数代码示例

static void r300_render_draw_arrays(struct vbuf_render* render,
                                    unsigned start,
                                    unsigned count)
{
    struct r300_render* r300render = r300_render(render);
    struct r300_context* r300 = r300render->r300;
    uint8_t* ptr;
    unsigned i;
    unsigned dwords = 6;

    CS_LOCALS(r300);
    (void) i; (void) ptr;

    assert(start == 0);
    assert(count < (1 << 16));

    DBG(r300, DBG_DRAW, "r300: render_draw_arrays (count: %d)\n", count);

    if (!r300_prepare_for_rendering(r300,
                                    PREP_EMIT_STATES | PREP_EMIT_VARRAYS_SWTCL,
                                    NULL, dwords, 0, 0, -1)) {
        return;
    }

    BEGIN_CS(dwords);
    OUT_CS_REG(R300_GA_COLOR_CONTROL,
            r300_provoking_vertex_fixes(r300, r300render->prim));
    OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, count - 1);
    OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
    OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
           r300render->hwprim);
    END_CS;
}

void r300_emit_vertex_arrays_swtcl(struct r300_context *r300, boolean indexed)
{
    CS_LOCALS(r300);

    DBG(r300, DBG_SWTCL, "r300: Preparing vertex buffer %p for render, "
            "vertex size %d\n", r300->vbo,
            r300->vertex_info.size);
    /* Set the pointer to our vertex buffer. The emitted values are this:
     * PACKET3 [3D_LOAD_VBPNTR]
     * COUNT   [1]
     * FORMAT  [size | stride << 8]
     * OFFSET  [offset into BO]
     * VBPNTR  [relocated BO]
     */
    BEGIN_CS(7);
    OUT_CS_PKT3(R300_PACKET3_3D_LOAD_VBPNTR, 3);
    OUT_CS(1 | (!indexed ? R300_VC_FORCE_PREFETCH : 0));
    OUT_CS(r300->vertex_info.size |
            (r300->vertex_info.size << 8));
    OUT_CS(r300->draw_vbo_offset);
    OUT_CS(0);

    assert(r300->vbo_cs);
    OUT_CS(0xc0001000); /* PKT3_NOP */
    OUT_CS(r300->rws->cs_get_reloc(r300->cs, r300->vbo_cs) * 4);
    END_CS;
}

void r300_emit_vertex_stream_state(struct r300_context* r300,
                                   unsigned size, void* state)
{
    struct r300_vertex_stream_state *streams =
        (struct r300_vertex_stream_state*)state;
    unsigned i;
    CS_LOCALS(r300);

    if (DBG_ON(r300, DBG_PSC)) {
        fprintf(stderr, "r300: PSC emit:\n");

        for (i = 0; i < streams->count; i++) {
            fprintf(stderr, "    : prog_stream_cntl%d: 0x%08x\n", i,
                   streams->vap_prog_stream_cntl[i]);
        }

        for (i = 0; i < streams->count; i++) {
            fprintf(stderr, "    : prog_stream_cntl_ext%d: 0x%08x\n", i,
                   streams->vap_prog_stream_cntl_ext[i]);
        }
    }

    BEGIN_CS(size);
    OUT_CS_REG_SEQ(R300_VAP_PROG_STREAM_CNTL_0, streams->count);
    OUT_CS_TABLE(streams->vap_prog_stream_cntl, streams->count);
    OUT_CS_REG_SEQ(R300_VAP_PROG_STREAM_CNTL_EXT_0, streams->count);
    OUT_CS_TABLE(streams->vap_prog_stream_cntl_ext, streams->count);
    END_CS;
}

void r500_emit_fs(struct r300_context* r300, unsigned size, void *state)
{
    struct r300_fragment_shader *fs = r300_fs(r300);
    CS_LOCALS(r300);

    WRITE_CS_TABLE(fs->shader->cb_code, fs->shader->cb_code_size);
}

void r500_emit_fs_rc_constant_state(struct r300_context* r300, unsigned size, void *state)
{
    struct r300_fragment_shader *fs = r300_fs(r300);
    struct rc_constant_list *constants = &fs->shader->code.constants;
    unsigned i;
    unsigned count = fs->shader->rc_state_count;
    unsigned first = fs->shader->externals_count;
    unsigned end = constants->Count;
    CS_LOCALS(r300);

    if (count == 0)
        return;

    BEGIN_CS(size);
    for(i = first; i < end; ++i) {
        if (constants->Constants[i].Type == RC_CONSTANT_STATE) {
            float data[4];

            get_rc_constant_state(data, r300, &constants->Constants[i]);

            OUT_CS_REG(R500_GA_US_VECTOR_INDEX,
                       R500_GA_US_VECTOR_INDEX_TYPE_CONST |
                       (i & R500_GA_US_VECTOR_INDEX_MASK));
            OUT_CS_ONE_REG(R500_GA_US_VECTOR_DATA, 4);
            OUT_CS_TABLE(data, 4);
        }
    }
    END_CS;
}

void r300_emit_fs_constants(struct r300_context* r300, unsigned size, void *state)
{
    struct r300_fragment_shader *fs = r300_fs(r300);
    struct r300_constant_buffer *buf = (struct r300_constant_buffer*)state;
    unsigned count = fs->shader->externals_count;
    unsigned i, j;
    CS_LOCALS(r300);

    if (count == 0)
        return;

    BEGIN_CS(size);
    OUT_CS_REG_SEQ(R300_PFS_PARAM_0_X, count * 4);
    if (buf->remap_table){
        for (i = 0; i < count; i++) {
            float *data = (float*)&buf->ptr[buf->remap_table[i]*4];
            for (j = 0; j < 4; j++)
                OUT_CS(pack_float24(data[j]));
        }
    } else {
        for (i = 0; i < count; i++)
            for (j = 0; j < 4; j++)
                OUT_CS(pack_float24(*(float*)&buf->ptr[i*4+j]));
    }

    END_CS;
}

void r300_emit_fs_rc_constant_state(struct r300_context* r300, unsigned size, void *state)
{
    struct r300_fragment_shader *fs = r300_fs(r300);
    struct rc_constant_list *constants = &fs->shader->code.constants;
    unsigned i;
    unsigned count = fs->shader->rc_state_count;
    unsigned first = fs->shader->externals_count;
    unsigned end = constants->Count;
    unsigned j;
    CS_LOCALS(r300);

    if (count == 0)
        return;

    BEGIN_CS(size);
    for(i = first; i < end; ++i) {
        if (constants->Constants[i].Type == RC_CONSTANT_STATE) {
            float data[4];

            get_rc_constant_state(data, r300, &constants->Constants[i]);

            OUT_CS_REG_SEQ(R300_PFS_PARAM_0_X + i * 16, 4);
            for (j = 0; j < 4; j++)
                OUT_CS(pack_float24(data[j]));
        }
    }
    END_CS;
}

void r300_emit_dsa_state(struct r300_context* r300, unsigned size, void* state)
{
    struct r300_dsa_state* dsa = (struct r300_dsa_state*)state;
    struct pipe_framebuffer_state* fb =
        (struct pipe_framebuffer_state*)r300->fb_state.state;
    boolean is_r500 = r300->screen->caps.is_r500;
    CS_LOCALS(r300);
    uint32_t alpha_func = dsa->alpha_function;

    /* Choose the alpha ref value between 8-bit (FG_ALPHA_FUNC.AM_VAL) and
     * 16-bit (FG_ALPHA_VALUE). */
    if (is_r500 && (alpha_func & R300_FG_ALPHA_FUNC_ENABLE)) {
        struct pipe_surface *cb = fb->nr_cbufs ? r300_get_nonnull_cb(fb, 0) : NULL;

        if (cb &&
            (cb->format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
             cb->format == PIPE_FORMAT_R16G16B16X16_FLOAT)) {
            alpha_func |= R500_FG_ALPHA_FUNC_FP16_ENABLE;
        } else {
            alpha_func |= R500_FG_ALPHA_FUNC_8BIT;
        }
    }

    /* Setup alpha-to-coverage. */
    if (r300->alpha_to_coverage && r300->msaa_enable) {
        /* Always set 3/6, it improves precision even for 2x and 4x MSAA. */
        alpha_func |= R300_FG_ALPHA_FUNC_MASK_ENABLE |
                      R300_FG_ALPHA_FUNC_CFG_3_OF_6;
    }

    BEGIN_CS(size);
    OUT_CS_REG(R300_FG_ALPHA_FUNC, alpha_func);
    OUT_CS_TABLE(fb->zsbuf ? &dsa->cb_begin : dsa->cb_zb_no_readwrite, size-2);
    END_CS;
}

static void r300_emit_draw_arrays(struct r300_context *r300,
                                  unsigned mode,
                                  unsigned count)
{
    boolean alt_num_verts = count > 65535;
    CS_LOCALS(r300);

    if (count >= (1 << 24)) {
        fprintf(stderr, "r300: Got a huge number of vertices: %i, "
                "refusing to render.\n", count);
        return;
    }

    r300_emit_draw_init(r300, mode, count-1);

    BEGIN_CS(2 + (alt_num_verts ? 2 : 0));
    if (alt_num_verts) {
        OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count);
    }
    OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
    OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
           r300_translate_primitive(mode) |
           (alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0));
    END_CS;
}

void r300_emit_texture_cache_inval(struct r300_context* r300, unsigned size, void* state)
{
    CS_LOCALS(r300);

    BEGIN_CS(size);
    OUT_CS_REG(R300_TX_INVALTAGS, 0);
    END_CS;
}

void r300_emit_blend_color_state(struct r300_context* r300,
                                 unsigned size, void* state)
{
    struct r300_blend_color_state* bc = (struct r300_blend_color_state*)state;
    CS_LOCALS(r300);

    WRITE_CS_TABLE(bc->cb, size);
}

void r300_emit_clip_state(struct r300_context* r300,
                          unsigned size, void* state)
{
    struct r300_clip_state* clip = (struct r300_clip_state*)state;
    CS_LOCALS(r300);

    WRITE_CS_TABLE(clip->cb, size);
}

void r300_emit_pvs_flush(struct r300_context* r300, unsigned size, void* state)
{
    CS_LOCALS(r300);

    BEGIN_CS(size);
    OUT_CS_REG(R300_VAP_PVS_STATE_FLUSH_REG, 0x0);
    END_CS;
}

void r500_emit_index_bias(struct r300_context *r300, int index_bias)
{
    CS_LOCALS(r300);

    BEGIN_CS(2);
    OUT_CS_REG(R500_VAP_INDEX_OFFSET,
               (index_bias & 0xFFFFFF) | (index_bias < 0 ? 1<<24 : 0));
    END_CS;
}

void r300_flush(struct pipe_context *pipe,
                unsigned flags,
                struct pipe_fence_handle **fence)
{
    struct r300_context *r300 = r300_context(pipe);

    if (r300->screen->info.drm_minor >= 12) {
        flags |= RADEON_FLUSH_KEEP_TILING_FLAGS;
    }

    if (r300->dirty_hw) {
        r300_flush_and_cleanup(r300, flags, fence);
    } else {
        if (fence) {
            /* We have to create a fence object, but the command stream is empty
             * and we cannot emit an empty CS. Let's write to some reg. */
            CS_LOCALS(r300);
            OUT_CS_REG(RB3D_COLOR_CHANNEL_MASK, 0);
            r300->rws->cs_flush(r300->cs, flags, fence, 0);
        } else {
            /* Even if hw is not dirty, we should at least reset the CS in case
             * the space checking failed for the first draw operation. */
            r300->rws->cs_flush(r300->cs, flags, NULL, 0);
        }
    }

    /* Update Hyper-Z status. */
    if (r300->hyperz_enabled) {
        /* If there was a Z clear, keep Hyper-Z access. */
        if (r300->num_z_clears) {
            r300->hyperz_time_of_last_flush = os_time_get();
            r300->num_z_clears = 0;
        } else if (r300->hyperz_time_of_last_flush - os_time_get() > 2000000) {
            /* If there hasn't been a Z clear for 2 seconds, revoke Hyper-Z access. */
            r300->hiz_in_use = FALSE;

            /* Decompress the Z buffer. */
            if (r300->zmask_in_use) {
                if (r300->locked_zbuffer) {
                    r300_decompress_zmask_locked(r300);
                } else {
                    r300_decompress_zmask(r300);
                }

                if (fence && *fence)
                    r300->rws->fence_reference(fence, NULL);
                r300_flush_and_cleanup(r300, flags, fence);
            }

            /* Revoke Hyper-Z access, so that some other process can take it. */
            r300->rws->cs_request_feature(r300->cs, RADEON_FID_R300_HYPERZ_ACCESS,
                                          FALSE);
            r300->hyperz_enabled = FALSE;
        }
    }
}