/**
* 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 );
vbo_reset_all_attr(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;
}
}
/**
* After playback, copy everything but the position from the
* last vertex to the saved state
*/
static void
_playback_copy_to_current(struct gl_context *ctx,
const struct vbo_save_vertex_list *node)
{
struct vbo_context *vbo = vbo_context(ctx);
fi_type vertex[VBO_ATTRIB_MAX * 4];
fi_type *data;
GLuint i, offset;
if (node->current_size == 0)
return;
if (node->current_data) {
data = node->current_data;
}
else {
data = vertex;
if (node->count)
offset = (node->buffer_offset +
(node->count-1) * node->vertex_size * sizeof(GLfloat));
else
offset = node->buffer_offset;
ctx->Driver.GetBufferSubData( ctx, offset,
node->vertex_size * sizeof(GLfloat),
data, node->vertex_store->bufferobj );
data += node->attrsz[0]; /* skip vertex position */
}
for (i = VBO_ATTRIB_POS+1 ; i < VBO_ATTRIB_MAX ; i++) {
if (node->attrsz[i]) {
fi_type *current = (fi_type *)vbo->currval[i].Ptr;
fi_type tmp[4];
COPY_CLEAN_4V_TYPE_AS_UNION(tmp,
node->attrsz[i],
data,
node->attrtype[i]);
if (node->attrtype[i] != vbo->currval[i].Type ||
memcmp(current, tmp, 4 * sizeof(GLfloat)) != 0) {
memcpy(current, tmp, 4 * sizeof(GLfloat));
vbo->currval[i].Size = node->attrsz[i];
vbo->currval[i]._ElementSize = vbo->currval[i].Size * sizeof(GLfloat);
vbo->currval[i].Type = node->attrtype[i];
vbo->currval[i].Integer =
vbo_attrtype_to_integer_flag(node->attrtype[i]);
if (i >= VBO_ATTRIB_FIRST_MATERIAL &&
i <= VBO_ATTRIB_LAST_MATERIAL)
ctx->NewState |= _NEW_LIGHT;
ctx->NewState |= _NEW_CURRENT_ATTRIB;
}
data += node->attrsz[i];
}
}
/* Colormaterial -- this kindof sucks.
*/
if (ctx->Light.ColorMaterialEnabled) {
_mesa_update_color_material(ctx, ctx->Current.Attrib[VBO_ATTRIB_COLOR0]);
}
/* CurrentExecPrimitive
*/
if (node->prim_count) {
const struct _mesa_prim *prim = &node->prim[node->prim_count - 1];
if (prim->end)
ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
else
ctx->Driver.CurrentExecPrimitive = prim->mode;
}
}
/**
* Copy the active vertex's values to the ctx->Current fields.
*/
static void
vbo_exec_copy_to_current(struct vbo_exec_context *exec)
{
struct gl_context *ctx = exec->ctx;
struct vbo_context *vbo = vbo_context(ctx);
GLbitfield64 enabled = exec->vtx.enabled & (~BITFIELD64_BIT(VBO_ATTRIB_POS));
while (enabled) {
const int i = u_bit_scan64(&enabled);
/* Note: the exec->vtx.current[i] pointers point into the
* ctx->Current.Attrib and ctx->Light.Material.Attrib arrays.
*/
GLfloat *current = (GLfloat *)vbo->currval[i].Ptr;
fi_type tmp[8]; /* space for doubles */
int dmul = exec->vtx.attrtype[i] == GL_DOUBLE ? 2 : 1;
assert(exec->vtx.attrsz[i]);
if (exec->vtx.attrtype[i] == GL_DOUBLE) {
memset(tmp, 0, sizeof(tmp));
memcpy(tmp, exec->vtx.attrptr[i], exec->vtx.attrsz[i] * sizeof(GLfloat));
} else {
COPY_CLEAN_4V_TYPE_AS_UNION(tmp,
exec->vtx.attrsz[i],
exec->vtx.attrptr[i],
exec->vtx.attrtype[i]);
}
if (exec->vtx.attrtype[i] != vbo->currval[i].Type ||
memcmp(current, tmp, 4 * sizeof(GLfloat) * dmul) != 0) {
memcpy(current, tmp, 4 * sizeof(GLfloat) * dmul);
/* Given that we explicitly state size here, there is no need
* for the COPY_CLEAN above, could just copy 16 bytes and be
* done. The only problem is when Mesa accesses ctx->Current
* directly.
*/
/* Size here is in components - not bytes */
vbo->currval[i].Size = exec->vtx.attrsz[i] / dmul;
vbo->currval[i]._ElementSize =
vbo->currval[i].Size * sizeof(GLfloat) * dmul;
vbo->currval[i].Type = exec->vtx.attrtype[i];
vbo->currval[i].Integer =
vbo_attrtype_to_integer_flag(exec->vtx.attrtype[i]);
vbo->currval[i].Doubles =
vbo_attrtype_to_double_flag(exec->vtx.attrtype[i]);
/* This triggers rather too much recalculation of Mesa state
* that doesn't get used (eg light positions).
*/
if (i >= VBO_ATTRIB_MAT_FRONT_AMBIENT &&
i <= VBO_ATTRIB_MAT_BACK_INDEXES)
ctx->NewState |= _NEW_LIGHT;
ctx->NewState |= _NEW_CURRENT_ATTRIB;
}
}
/* Colormaterial -- this kindof sucks.
*/
if (ctx->Light.ColorMaterialEnabled &&
exec->vtx.attrsz[VBO_ATTRIB_COLOR0]) {
_mesa_update_color_material(ctx,
ctx->Current.Attrib[VBO_ATTRIB_COLOR0]);
}
}
