/**
* Execute the buffer and save copied verts.
* \param keep_unmapped if true, leave the VBO unmapped when we're done.
*/
void
vbo_exec_vtx_flush(struct vbo_exec_context *exec, GLboolean keepUnmapped)
{
if (0)
vbo_exec_debug_verts(exec);
if (exec->vtx.prim_count &&
exec->vtx.vert_count) {
exec->vtx.copied.nr = vbo_copy_vertices(exec);
if (exec->vtx.copied.nr != exec->vtx.vert_count) {
struct gl_context *ctx = exec->ctx;
/* Prepare and set the exec draws internal VAO for drawing. */
vbo_exec_bind_arrays(ctx);
if (ctx->NewState)
_mesa_update_state(ctx);
vbo_exec_vtx_unmap(exec);
assert(ctx->NewState == 0);
if (0)
printf("%s %d %d\n", __func__, exec->vtx.prim_count,
exec->vtx.vert_count);
ctx->Driver.Draw(ctx, exec->vtx.prim, exec->vtx.prim_count,
NULL, GL_TRUE, 0, exec->vtx.vert_count - 1,
NULL, 0, NULL);
/* Get new storage -- unless asked not to. */
if (!keepUnmapped)
vbo_exec_vtx_map(exec);
}
}
/* May have to unmap explicitly if we didn't draw:
*/
if (keepUnmapped && exec->vtx.buffer_map) {
vbo_exec_vtx_unmap(exec);
}
if (keepUnmapped || exec->vtx.vertex_size == 0)
exec->vtx.max_vert = 0;
else
exec->vtx.max_vert = vbo_compute_max_verts(exec);
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
exec->vtx.prim_count = 0;
exec->vtx.vert_count = 0;
}
/**
* Flush existing data, set new attrib size, replay copied vertices.
* This is called when we transition from a small vertex attribute size
* to a larger one. Ex: glTexCoord2f -> glTexCoord4f.
* We need to go back over the previous 2-component texcoords and insert
* zero and one values.
*/
static void
vbo_exec_wrap_upgrade_vertex(struct vbo_exec_context *exec,
GLuint attr, GLuint newSize )
{
struct gl_context *ctx = exec->ctx;
struct vbo_context *vbo = vbo_context(ctx);
const GLint lastcount = exec->vtx.vert_count;
fi_type *old_attrptr[VBO_ATTRIB_MAX];
const GLuint old_vtx_size = exec->vtx.vertex_size; /* floats per vertex */
const GLuint oldSize = exec->vtx.attrsz[attr];
GLuint i;
/* Run pipeline on current vertices, copy wrapped vertices
* to exec->vtx.copied.
*/
vbo_exec_wrap_buffers( exec );
if (unlikely(exec->vtx.copied.nr)) {
/* We're in the middle of a primitive, keep the old vertex
* format around to be able to translate the copied vertices to
* the new format.
*/
memcpy(old_attrptr, exec->vtx.attrptr, sizeof(old_attrptr));
}
if (unlikely(oldSize)) {
/* Do a COPY_TO_CURRENT to ensure back-copying works for the
* case when the attribute already exists in the vertex and is
* having its size increased.
*/
vbo_exec_copy_to_current( exec );
}
/* Heuristic: Attempt to isolate attributes received outside
* begin/end so that they don't bloat the vertices.
*/
if (!_mesa_inside_begin_end(ctx) &&
!oldSize && lastcount > 8 && exec->vtx.vertex_size) {
vbo_exec_copy_to_current( exec );
reset_attrfv( exec );
}
/* Fix up sizes:
*/
exec->vtx.attrsz[attr] = newSize;
exec->vtx.vertex_size += newSize - oldSize;
exec->vtx.max_vert = vbo_compute_max_verts(exec);
exec->vtx.vert_count = 0;
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
exec->vtx.enabled |= BITFIELD64_BIT(attr);
if (unlikely(oldSize)) {
/* Size changed, recalculate all the attrptr[] values
*/
fi_type *tmp = exec->vtx.vertex;
for (i = 0 ; i < VBO_ATTRIB_MAX ; i++) {
if (exec->vtx.attrsz[i]) {
exec->vtx.attrptr[i] = tmp;
tmp += exec->vtx.attrsz[i];
}
else
exec->vtx.attrptr[i] = NULL; /* will not be dereferenced */
}
/* Copy from current to repopulate the vertex with correct
* values.
*/
vbo_exec_copy_from_current( exec );
}
else {
/* Just have to append the new attribute at the end */
exec->vtx.attrptr[attr] = exec->vtx.vertex +
exec->vtx.vertex_size - newSize;
}
/* Replay stored vertices to translate them
* to new format here.
*
* -- No need to replay - just copy piecewise
*/
if (unlikely(exec->vtx.copied.nr)) {
fi_type *data = exec->vtx.copied.buffer;
fi_type *dest = exec->vtx.buffer_ptr;
assert(exec->vtx.buffer_ptr == exec->vtx.buffer_map);
for (i = 0 ; i < exec->vtx.copied.nr ; i++) {
GLbitfield64 enabled = exec->vtx.enabled;
while (enabled) {
const int j = u_bit_scan64(&enabled);
GLuint sz = exec->vtx.attrsz[j];
GLint old_offset = old_attrptr[j] - exec->vtx.vertex;
GLint new_offset = exec->vtx.attrptr[j] - exec->vtx.vertex;
assert(sz);
if (j == attr) {
if (oldSize) {
fi_type tmp[4];
COPY_CLEAN_4V_TYPE_AS_UNION(tmp, oldSize,
data + old_offset,
exec->vtx.attrtype[j]);
COPY_SZ_4V(dest + new_offset, newSize, tmp);
} else {
fi_type *current = (fi_type *)vbo->currval[j].Ptr;
COPY_SZ_4V(dest + new_offset, sz, current);
}
}
else {
COPY_SZ_4V(dest + new_offset, sz, data + old_offset);
}
}
data += old_vtx_size;
dest += exec->vtx.vertex_size;
}
exec->vtx.buffer_ptr = dest;
exec->vtx.vert_count += exec->vtx.copied.nr;
exec->vtx.copied.nr = 0;
}
}
/**
* Execute the buffer and save copied verts.
* \param keep_unmapped if true, leave the VBO unmapped when we're done.
*/
void
vbo_exec_vtx_flush(struct vbo_exec_context *exec, GLboolean keepUnmapped)
{
if (0)
vbo_exec_debug_verts( exec );
if (exec->vtx.prim_count &&
exec->vtx.vert_count) {
exec->vtx.copied.nr = vbo_copy_vertices( exec );
if (exec->vtx.copied.nr != exec->vtx.vert_count) {
struct gl_context *ctx = exec->ctx;
/* Before the update_state() as this may raise _NEW_VARYING_VP_INPUTS
* from _mesa_set_varying_vp_inputs().
*/
vbo_exec_bind_arrays( ctx );
if (ctx->NewState)
_mesa_update_state( ctx );
if (_mesa_is_bufferobj(exec->vtx.bufferobj)) {
vbo_exec_vtx_unmap( exec );
}
if (0)
printf("%s %d %d\n", __func__, exec->vtx.prim_count,
exec->vtx.vert_count);
vbo_context(ctx)->draw_prims( ctx,
exec->vtx.prim,
exec->vtx.prim_count,
NULL,
GL_TRUE,
0,
exec->vtx.vert_count - 1,
NULL, 0, NULL);
/* If using a real VBO, get new storage -- unless asked not to.
*/
if (_mesa_is_bufferobj(exec->vtx.bufferobj) && !keepUnmapped) {
vbo_exec_vtx_map( exec );
}
}
}
/* May have to unmap explicitly if we didn't draw:
*/
if (keepUnmapped &&
_mesa_is_bufferobj(exec->vtx.bufferobj) &&
exec->vtx.buffer_map) {
vbo_exec_vtx_unmap( exec );
}
if (keepUnmapped || exec->vtx.vertex_size == 0)
exec->vtx.max_vert = 0;
else
exec->vtx.max_vert = vbo_compute_max_verts(exec);
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
exec->vtx.prim_count = 0;
exec->vtx.vert_count = 0;
}