r300g: VBOs WIP

1 files changed, 226 insertions, 0 deletions

diff --git a/src/gallium/drivers/r300/r300_vbo.c b/src/gallium/drivers/r300/r300_vbo.c
new file mode 100644
index 0000000000..e032641286
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_vbo.c
@@ -0,0 +1,226 @@
+/*
+ * Copyright 2009 Maciej Cencora <m.cencora@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 "r300_vbo.h"
+
+#include "pipe/p_format.h"
+
+#include "r300_cs.h"
+#include "r300_context.h"
+#include "r300_reg.h"
+#include "r300_winsys.h"
+
+static void translate_vertex_format(enum pipe_format format,
+                                    unsigned nr_comps,
+                                    unsigned component_size,
+                                    unsigned dst_loc,
+                                    uint32_t *hw_fmt1,
+                                    uint32_t *hw_fmt2)
+{
+    uint32_t fmt1 = 0;
+
+    switch (pf_type(format))
+    {
+        case PIPE_FORMAT_TYPE_FLOAT:
+            assert(component_size == 4);
+            fmt1 = R300_DATA_TYPE_FLOAT_1 + nr_comps - 1;
+            break;
+        case PIPE_FORMAT_TYPE_UNORM:
+        case PIPE_FORMAT_TYPE_SNORM:
+        case PIPE_FORMAT_TYPE_USCALED:
+        case PIPE_FORMAT_TYPE_SSCALED:
+            if (component_size == 1)
+            {
+                assert(nr_comps == 4);
+                fmt1 = R300_DATA_TYPE_BYTE;
+            }
+            else if (component_size == 2)
+            {
+                if (nr_comps == 2)
+                    fmt1 = R300_DATA_TYPE_SHORT_2;
+                else if (nr_comps == 4)
+                    fmt1 = R300_DATA_TYPE_SHORT_4;
+                else
+                    assert(0);
+            }
+            else
+            {
+                assert(0);
+            }
+
+            if (pf_type(format) == PIPE_FORMAT_TYPE_SNORM)
+            {
+                fmt1 |= R300_SIGNED;
+            }
+            else if (pf_type(format) == PIPE_FORMAT_TYPE_SSCALED)
+            {
+                fmt1 |= R300_SIGNED;
+                fmt1 |= R300_NORMALIZE;
+            }
+            else if (pf_type(format) == PIPE_FORMAT_TYPE_USCALED)
+            {
+                fmt1 |= R300_NORMALIZE;
+            }
+            break;
+        default:
+            assert(0);
+            break;
+    }
+
+    *hw_fmt1 = fmt1 | (dst_loc << R300_DST_VEC_LOC_SHIFT);
+    *hw_fmt2 = (pf_swizzle_x(format) << R300_SWIZZLE_SELECT_X_SHIFT) |
+               (pf_swizzle_y(format) << R300_SWIZZLE_SELECT_Y_SHIFT) |
+               (pf_swizzle_z(format) << R300_SWIZZLE_SELECT_Z_SHIFT) |
+               (pf_swizzle_w(format) << R300_SWIZZLE_SELECT_W_SHIFT) |
+               (0xf << R300_WRITE_ENA_SHIFT);
+}
+
+static INLINE void setup_vertex_attribute(struct r300_vertex_info *vinfo,
+                                          struct pipe_vertex_element *vert_elem,
+                                          unsigned attr_num)
+{
+    uint32_t hw_fmt1, hw_fmt2;
+    translate_vertex_format(vert_elem->src_format,
+                            vert_elem->nr_components,
+                            pf_size_x(vert_elem->src_format),
+                            attr_num,
+                            &hw_fmt1,
+                            &hw_fmt2);
+
+    if (attr_num % 2 == 0)
+    {
+        vinfo->vap_prog_stream_cntl[attr_num >> 1] = hw_fmt1;
+        vinfo->vap_prog_stream_cntl_ext[attr_num >> 1] = hw_fmt2;
+    }
+    else
+    {
+        vinfo->vap_prog_stream_cntl[attr_num >> 1] |= hw_fmt1 << 16;
+        vinfo->vap_prog_stream_cntl_ext[attr_num >> 1] |= hw_fmt2 << 16;
+    }
+}
+
+static void finish_vertex_attribs_setup(struct r300_vertex_info *vinfo,
+                                        unsigned attribs_num)
+{
+    uint32_t last_vec_bit = (attribs_num % 2 == 0) ? (R300_LAST_VEC << 16) : R300_LAST_VEC;
+
+    assert(attribs_num > 0 && attribs_num <= 16);
+    vinfo->vap_prog_stream_cntl[(attribs_num - 1) >> 1] |= last_vec_bit;
+}
+
+void setup_vertex_attributes(struct r300_context *r300)
+{
+    for (int i=0; i<r300->aos_count; i++)
+    {
+        struct pipe_vertex_element *vert_elem = &r300->vertex_element[i];
+
+        setup_vertex_attribute(r300->vertex_info, vert_elem, i);
+    }
+
+    finish_vertex_attribs_setup(r300->vertex_info, r300->aos_count);
+}
+
+static void setup_vertex_array(struct r300_context *r300, struct pipe_vertex_element *element)
+{
+}
+
+static void finish_vertex_arrays_setup(struct r300_context *r300)
+{
+}
+
+static bool format_is_supported(enum pipe_format format, int nr_components)
+{
+    if (pf_layout(format) != PIPE_FORMAT_LAYOUT_RGBAZS)
+        return false;
+
+    if ((pf_size_x(format) != pf_size_y(format)) ||
+        (pf_size_x(format) != pf_size_z(format)) ||
+        (pf_size_x(format) != pf_size_w(format)))
+        return false;
+
+    /* Following should be supported as long as stride is 4 bytes aligned */
+    if (pf_size_x(format) != 1 && nr_components != 4)
+        return false;
+
+    if (pf_size_x(format) != 2 && !(nr_components == 2 || nr_components == 4))
+        return false;
+
+    if (pf_size_x(format) == 3 || pf_size_x(format) > 4)
+        return false;
+
+    return true;
+}
+
+static INLINE int get_buffer_offset(struct r300_context *r300,
+                                    unsigned int buf_nr,
+                                    unsigned int elem_offset)
+{
+    return r300->vertex_buffer[buf_nr].buffer_offset + elem_offset;
+}
+
+/**
+ */
+static void setup_vertex_buffers(struct r300_context *r300)
+{
+    for (int i=0; i<r300->aos_count; i++)
+    {
+        struct pipe_vertex_element *vert_elem = &r300->vertex_element[i];
+        if (!format_is_supported(vert_elem->src_format, vert_elem->nr_components))
+        {
+            assert(0);
+            /* use translate module to convert the data */
+            /*
+            struct pipe_buffer *buf;
+            const unsigned int max_index = r300->vertex_buffers[vert_elem->vertex_buffer_index].max_index;
+            buf = pipe_buffer_create(r300->context.screen, 4, usage, vert_elem->nr_components * max_index * sizeof(float));
+            */
+        }
+
+        if (get_buffer_offset(r300, vert_elem->vertex_buffer_index, vert_elem->src_offset) % 4 != 0)
+        {
+            /* need to align buffer */
+            assert(0);
+        }
+        setup_vertex_array(r300, vert_elem);
+    }
+
+    finish_vertex_arrays_setup(r300);
+}
+
+void setup_index_buffer(struct r300_context *r300,
+                        struct pipe_buffer* indexBuffer,
+                        unsigned indexSize)
+{
+    assert(indexSize = 2);
+
+    if (!r300->winsys->add_buffer(r300->winsys, indexBuffer, RADEON_GEM_DOMAIN_GTT, 0))
+    {
+        assert(0);
+    }
+
+    if (!r300->winsys->validate(r300->winsys))
+    {
+        assert(0);
+    }
+}
+