C++ (Cpp) r300_draw_elements_immediateの例

コード例 #1

ファイル: r300_render.c プロジェクト: Thermionix/Mesa-3D

static void r300_draw_vbo(struct pipe_context* pipe,
                          const struct pipe_draw_info *dinfo)
{
    struct r300_context* r300 = r300_context(pipe);
    struct pipe_draw_info info = *dinfo;

    info.indexed = info.indexed;

    if (r300->skip_rendering ||
        !u_trim_pipe_prim(info.mode, &info.count)) {
        return;
    }

    r300_update_derived_state(r300);

    /* Draw. */
    if (info.indexed) {
        unsigned max_count = r300_max_vertex_count(r300);

        if (!max_count) {
           fprintf(stderr, "r300: Skipping a draw command. There is a buffer "
                   " which is too small to be used for rendering.\n");
           return;
        }

        if (max_count == ~0) {
           /* There are no per-vertex vertex elements. Use the hardware maximum. */
           max_count = 0xffffff;
        }

        info.max_index = max_count - 1;
        info.start += r300->index_buffer.offset / r300->index_buffer.index_size;

        if (info.instance_count <= 1) {
            if (info.count <= 8 &&
                r300->index_buffer.user_buffer) {
                r300_draw_elements_immediate(r300, &info);
            } else {
                r300_draw_elements(r300, &info, -1);
            }
        } else {
            r300_draw_elements_instanced(r300, &info);
        }
    } else {
        if (info.instance_count <= 1) {
            if (immd_is_good_idea(r300, info.count)) {
                r300_draw_arrays_immediate(r300, &info);
            } else {
                r300_draw_arrays(r300, &info, -1);
            }
        } else {
            r300_draw_arrays_instanced(r300, &info);
        }
    }
}

コード例 #2

ファイル: r300_render.c プロジェクト: ChillyWillyGuru/RSXGL

static void r300_draw_vbo(struct pipe_context* pipe,
                          const struct pipe_draw_info *dinfo)
{
    struct r300_context* r300 = r300_context(pipe);
    struct pipe_draw_info info = *dinfo;

    info.indexed = info.indexed && r300->vbuf_mgr->index_buffer.buffer;

    if (r300->skip_rendering ||
        !u_trim_pipe_prim(info.mode, &info.count)) {
        return;
    }

    r300_update_derived_state(r300);

    /* Start the vbuf manager and update buffers if needed. */
    if (u_vbuf_draw_begin(r300->vbuf_mgr, &info) & U_VBUF_BUFFERS_UPDATED) {
        r300->vertex_arrays_dirty = TRUE;
    }

    /* Draw. */
    if (info.indexed) {
        unsigned max_count = u_vbuf_draw_max_vertex_count(r300->vbuf_mgr);

        if (!max_count) {
           fprintf(stderr, "r300: Skipping a draw command. There is a buffer "
                   " which is too small to be used for rendering.\n");
           goto done;
        }

        if (max_count == ~0) {
           /* There are no per-vertex vertex elements. Use the hardware maximum. */
           max_count = 0xffffff;
        }

        info.max_index = max_count - 1;
        info.start += r300->vbuf_mgr->index_buffer.offset / r300->vbuf_mgr->index_buffer.index_size;

        if (info.instance_count <= 1) {
            if (info.count <= 8 &&
                r300_resource(r300->vbuf_mgr->index_buffer.buffer)->b.user_ptr) {
                r300_draw_elements_immediate(r300, &info);
            } else {
                r300_draw_elements(r300, &info, -1);
            }
        } else {
            r300_draw_elements_instanced(r300, &info);
        }
    } else {
        if (info.instance_count <= 1) {
            if (immd_is_good_idea(r300, info.count)) {
                r300_draw_arrays_immediate(r300, &info);
            } else {
                r300_draw_arrays(r300, &info, -1);
            }
        } else {
            r300_draw_arrays_instanced(r300, &info);
        }
    }

done:
    u_vbuf_draw_end(r300->vbuf_mgr);
}