static void init_velement_lowered(const struct st_vertex_program *vp,
struct pipe_vertex_element *velements,
const struct gl_vertex_format *vformat,
int src_offset, int instance_divisor,
int vbo_index, int idx)
{
const GLubyte nr_components = vformat->Size;
if (vformat->Doubles) {
int lower_format;
if (nr_components < 2)
lower_format = PIPE_FORMAT_R32G32_UINT;
else
lower_format = PIPE_FORMAT_R32G32B32A32_UINT;
init_velement(&velements[idx], src_offset,
lower_format, instance_divisor, vbo_index);
idx++;
if (idx < vp->num_inputs &&
vp->index_to_input[idx] == ST_DOUBLE_ATTRIB_PLACEHOLDER) {
if (nr_components >= 3) {
if (nr_components == 3)
lower_format = PIPE_FORMAT_R32G32_UINT;
else
lower_format = PIPE_FORMAT_R32G32B32A32_UINT;
init_velement(&velements[idx], src_offset + 4 * sizeof(float),
lower_format, instance_divisor, vbo_index);
} else {
/* The values here are undefined. Fill in some conservative
* dummy values.
*/
init_velement(&velements[idx], src_offset, PIPE_FORMAT_R32G32_UINT,
instance_divisor, vbo_index);
}
}
} else {
const unsigned format = st_pipe_vertex_format(vformat);
init_velement(&velements[idx], src_offset,
format, instance_divisor, vbo_index);
}
}
/**
* Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
* vertex attribute.
* \param vbuffer returns vertex buffer info
* \param velements returns vertex element info
*/
static boolean
setup_non_interleaved_attribs(struct st_context *st,
const struct st_vertex_program *vp,
const struct st_vp_variant *vpv,
const struct gl_client_array **arrays,
struct pipe_vertex_buffer vbuffer[],
struct pipe_vertex_element velements[])
{
struct gl_context *ctx = st->ctx;
GLuint attr;
for (attr = 0; attr < vpv->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
const struct gl_client_array *array = arrays[mesaAttr];
struct gl_buffer_object *bufobj = array->BufferObj;
GLsizei stride = array->StrideB;
assert(array->_ElementSize ==
_mesa_bytes_per_vertex_attrib(array->Size, array->Type));
if (_mesa_is_bufferobj(bufobj)) {
/* Attribute data is in a VBO.
* Recall that for VBOs, the gl_client_array->Ptr field is
* really an offset from the start of the VBO, not a pointer.
*/
struct st_buffer_object *stobj = st_buffer_object(bufobj);
if (!stobj || !stobj->buffer) {
return FALSE; /* out-of-memory error probably */
}
vbuffer[attr].buffer = stobj->buffer;
vbuffer[attr].user_buffer = NULL;
vbuffer[attr].buffer_offset = pointer_to_offset(array->Ptr);
}
else {
/* wrap user data */
void *ptr;
if (array->Ptr) {
ptr = (void *) array->Ptr;
}
else {
/* no array, use ctx->Current.Attrib[] value */
ptr = (void *) ctx->Current.Attrib[mesaAttr];
stride = 0;
}
assert(ptr);
vbuffer[attr].buffer = NULL;
vbuffer[attr].user_buffer = ptr;
vbuffer[attr].buffer_offset = 0;
}
/* common-case setup */
vbuffer[attr].stride = stride; /* in bytes */
velements[attr].src_offset = 0;
velements[attr].instance_divisor = array->InstanceDivisor;
velements[attr].vertex_buffer_index = attr;
velements[attr].src_format = st_pipe_vertex_format(array->Type,
array->Size,
array->Format,
array->Normalized,
array->Integer);
assert(velements[attr].src_format);
}
return TRUE;
}
/**
* Set up for drawing interleaved arrays that all live in one VBO
* or all live in user space.
* \param vbuffer returns vertex buffer info
* \param velements returns vertex element info
*/
static boolean
setup_interleaved_attribs(const struct st_vertex_program *vp,
const struct st_vp_variant *vpv,
const struct gl_client_array **arrays,
struct pipe_vertex_buffer *vbuffer,
struct pipe_vertex_element velements[])
{
GLuint attr;
const GLubyte *low_addr = NULL;
GLboolean usingVBO; /* all arrays in a VBO? */
struct gl_buffer_object *bufobj;
GLsizei stride;
/* Find the lowest address of the arrays we're drawing,
* Init bufobj and stride.
*/
if (vpv->num_inputs) {
const GLuint mesaAttr0 = vp->index_to_input[0];
const struct gl_client_array *array = arrays[mesaAttr0];
/* Since we're doing interleaved arrays, we know there'll be at most
* one buffer object and the stride will be the same for all arrays.
* Grab them now.
*/
bufobj = array->BufferObj;
stride = array->StrideB;
low_addr = arrays[vp->index_to_input[0]]->Ptr;
for (attr = 1; attr < vpv->num_inputs; attr++) {
const GLubyte *start = arrays[vp->index_to_input[attr]]->Ptr;
low_addr = MIN2(low_addr, start);
}
}
else {
/* not sure we'll ever have zero inputs, but play it safe */
bufobj = NULL;
stride = 0;
low_addr = 0;
}
/* are the arrays in user space? */
usingVBO = _mesa_is_bufferobj(bufobj);
for (attr = 0; attr < vpv->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
const struct gl_client_array *array = arrays[mesaAttr];
unsigned src_offset = (unsigned) (array->Ptr - low_addr);
assert(array->_ElementSize ==
_mesa_bytes_per_vertex_attrib(array->Size, array->Type));
velements[attr].src_offset = src_offset;
velements[attr].instance_divisor = array->InstanceDivisor;
velements[attr].vertex_buffer_index = 0;
velements[attr].src_format = st_pipe_vertex_format(array->Type,
array->Size,
array->Format,
array->Normalized,
array->Integer);
assert(velements[attr].src_format);
}
/*
* Return the vbuffer info and setup user-space attrib info, if needed.
*/
if (vpv->num_inputs == 0) {
/* just defensive coding here */
vbuffer->buffer = NULL;
vbuffer->user_buffer = NULL;
vbuffer->buffer_offset = 0;
vbuffer->stride = 0;
}
else if (usingVBO) {
/* all interleaved arrays in a VBO */
struct st_buffer_object *stobj = st_buffer_object(bufobj);
if (!stobj || !stobj->buffer) {
return FALSE; /* out-of-memory error probably */
}
vbuffer->buffer = stobj->buffer;
vbuffer->user_buffer = NULL;
vbuffer->buffer_offset = pointer_to_offset(low_addr);
vbuffer->stride = stride;
}
else {
/* all interleaved arrays in user memory */
vbuffer->buffer = NULL;
vbuffer->user_buffer = low_addr;
vbuffer->buffer_offset = 0;
vbuffer->stride = stride;
}
return TRUE;
}
/**
* Called by VBO to draw arrays when in selection or feedback mode and
* to implement glRasterPos.
* This is very much like the normal draw_vbo() function above.
* Look at code refactoring some day.
* Might move this into the failover module some day.
*/
void
st_feedback_draw_vbo(GLcontext *ctx,
const struct gl_client_array **arrays,
const struct _mesa_prim *prims,
GLuint nr_prims,
const struct _mesa_index_buffer *ib,
GLboolean index_bounds_valid,
GLuint min_index,
GLuint max_index)
{
struct st_context *st = ctx->st;
struct pipe_context *pipe = st->pipe;
struct draw_context *draw = st->draw;
const struct st_vertex_program *vp;
const struct pipe_shader_state *vs;
struct pipe_buffer *index_buffer_handle = 0;
struct pipe_vertex_buffer vbuffers[PIPE_MAX_SHADER_INPUTS];
struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
GLuint attr, i;
ubyte *mapped_constants;
assert(draw);
st_validate_state(ctx->st);
if (!index_bounds_valid)
vbo_get_minmax_index(ctx, prims, ib, &min_index, &max_index);
/* must get these after state validation! */
vp = ctx->st->vp;
vs = &st->vp->state;
if (!st->vp->draw_shader) {
st->vp->draw_shader = draw_create_vertex_shader(draw, vs);
}
/*
* Set up the draw module's state.
*
* We'd like to do this less frequently, but the normal state-update
* code sends state updates to the pipe, not to our private draw module.
*/
assert(draw);
draw_set_viewport_state(draw, &st->state.viewport);
draw_set_clip_state(draw, &st->state.clip);
draw_set_rasterizer_state(draw, &st->state.rasterizer);
draw_bind_vertex_shader(draw, st->vp->draw_shader);
set_feedback_vertex_format(ctx);
/* loop over TGSI shader inputs to determine vertex buffer
* and attribute info
*/
for (attr = 0; attr < vp->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj;
void *map;
if (bufobj && bufobj->Name) {
/* Attribute data is in a VBO.
* Recall that for VBOs, the gl_client_array->Ptr field is
* really an offset from the start of the VBO, not a pointer.
*/
struct st_buffer_object *stobj = st_buffer_object(bufobj);
assert(stobj->buffer);
vbuffers[attr].buffer = NULL;
pipe_buffer_reference(&vbuffers[attr].buffer, stobj->buffer);
vbuffers[attr].buffer_offset = pointer_to_offset(arrays[0]->Ptr);
velements[attr].src_offset = arrays[mesaAttr]->Ptr - arrays[0]->Ptr;
}
else {
/* attribute data is in user-space memory, not a VBO */
uint bytes = (arrays[mesaAttr]->Size
* _mesa_sizeof_type(arrays[mesaAttr]->Type)
* (max_index + 1));
/* wrap user data */
vbuffers[attr].buffer
= pipe_user_buffer_create(pipe->screen, (void *) arrays[mesaAttr]->Ptr,
bytes);
vbuffers[attr].buffer_offset = 0;
velements[attr].src_offset = 0;
}
/* common-case setup */
vbuffers[attr].stride = arrays[mesaAttr]->StrideB; /* in bytes */
vbuffers[attr].max_index = max_index;
velements[attr].vertex_buffer_index = attr;
velements[attr].nr_components = arrays[mesaAttr]->Size;
velements[attr].src_format =
st_pipe_vertex_format(arrays[mesaAttr]->Type,
arrays[mesaAttr]->Size,
arrays[mesaAttr]->Format,
arrays[mesaAttr]->Normalized);
assert(velements[attr].src_format);
/* tell draw about this attribute */
#if 0
draw_set_vertex_buffer(draw, attr, &vbuffer[attr]);
#endif
/* map the attrib buffer */
map = pipe_buffer_map(pipe->screen, vbuffers[attr].buffer,
PIPE_BUFFER_USAGE_CPU_READ);
draw_set_mapped_vertex_buffer(draw, attr, map);
}
draw_set_vertex_buffers(draw, vp->num_inputs, vbuffers);
draw_set_vertex_elements(draw, vp->num_inputs, velements);
if (ib) {
struct gl_buffer_object *bufobj = ib->obj;
unsigned indexSize;
void *map;
switch (ib->type) {
case GL_UNSIGNED_INT:
indexSize = 4;
break;
case GL_UNSIGNED_SHORT:
indexSize = 2;
break;
default:
assert(0);
return;
}
if (bufobj && bufobj->Name) {
struct st_buffer_object *stobj = st_buffer_object(bufobj);
index_buffer_handle = stobj->buffer;
map = pipe_buffer_map(pipe->screen, index_buffer_handle,
PIPE_BUFFER_USAGE_CPU_READ);
draw_set_mapped_element_buffer(draw, indexSize, map);
}
else {
draw_set_mapped_element_buffer(draw, indexSize, (void *) ib->ptr);
}
}
else {
/* no index/element buffer */
draw_set_mapped_element_buffer(draw, 0, NULL);
}
/* map constant buffers */
mapped_constants = pipe_buffer_map(pipe->screen,
st->state.constants[PIPE_SHADER_VERTEX].buffer,
PIPE_BUFFER_USAGE_CPU_READ);
draw_set_mapped_constant_buffer(st->draw, mapped_constants,
st->state.constants[PIPE_SHADER_VERTEX].buffer->size);
/* draw here */
for (i = 0; i < nr_prims; i++) {
draw_arrays(draw, prims[i].mode, prims[i].start, prims[i].count);
}
/* unmap constant buffers */
pipe_buffer_unmap(pipe->screen, st->state.constants[PIPE_SHADER_VERTEX].buffer);
/*
* unmap vertex/index buffers
*/
for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
if (draw->pt.vertex_buffer[i].buffer) {
pipe_buffer_unmap(pipe->screen, draw->pt.vertex_buffer[i].buffer);
pipe_buffer_reference(&draw->pt.vertex_buffer[i].buffer, NULL);
draw_set_mapped_vertex_buffer(draw, i, NULL);
}
}
if (index_buffer_handle) {
pipe_buffer_unmap(pipe->screen, index_buffer_handle);
draw_set_mapped_element_buffer(draw, 0, NULL);
}
}
/**
* Called by VBO to draw arrays when in selection or feedback mode and
* to implement glRasterPos.
* This is very much like the normal draw_vbo() function above.
* Look at code refactoring some day.
*/
void
st_feedback_draw_vbo(struct gl_context *ctx,
const struct gl_client_array **arrays,
const struct _mesa_prim *prims,
GLuint nr_prims,
const struct _mesa_index_buffer *ib,
GLboolean index_bounds_valid,
GLuint min_index,
GLuint max_index,
struct gl_transform_feedback_object *tfb_vertcount)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct draw_context *draw = st->draw;
const struct st_vertex_program *vp;
const struct pipe_shader_state *vs;
struct pipe_vertex_buffer vbuffers[PIPE_MAX_SHADER_INPUTS];
struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
struct pipe_index_buffer ibuffer;
struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS];
struct pipe_transfer *ib_transfer = NULL;
GLuint attr, i;
const GLubyte *low_addr = NULL;
const void *mapped_indices = NULL;
assert(draw);
st_validate_state(st);
if (!index_bounds_valid)
vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index, nr_prims);
/* must get these after state validation! */
vp = st->vp;
vs = &st->vp_variant->tgsi;
if (!st->vp_variant->draw_shader) {
st->vp_variant->draw_shader = draw_create_vertex_shader(draw, vs);
}
/*
* Set up the draw module's state.
*
* We'd like to do this less frequently, but the normal state-update
* code sends state updates to the pipe, not to our private draw module.
*/
assert(draw);
draw_set_viewport_state(draw, &st->state.viewport);
draw_set_clip_state(draw, &st->state.clip);
draw_set_rasterizer_state(draw, &st->state.rasterizer, NULL);
draw_bind_vertex_shader(draw, st->vp_variant->draw_shader);
set_feedback_vertex_format(ctx);
/* Find the lowest address of the arrays we're drawing */
if (vp->num_inputs) {
low_addr = arrays[vp->index_to_input[0]]->Ptr;
for (attr = 1; attr < vp->num_inputs; attr++) {
const GLubyte *start = arrays[vp->index_to_input[attr]]->Ptr;
low_addr = MIN2(low_addr, start);
}
}
/* loop over TGSI shader inputs to determine vertex buffer
* and attribute info
*/
for (attr = 0; attr < vp->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj;
void *map;
if (bufobj && bufobj->Name) {
/* Attribute data is in a VBO.
* Recall that for VBOs, the gl_client_array->Ptr field is
* really an offset from the start of the VBO, not a pointer.
*/
struct st_buffer_object *stobj = st_buffer_object(bufobj);
assert(stobj->buffer);
vbuffers[attr].buffer = NULL;
pipe_resource_reference(&vbuffers[attr].buffer, stobj->buffer);
vbuffers[attr].buffer_offset = pointer_to_offset(low_addr);
velements[attr].src_offset = arrays[mesaAttr]->Ptr - low_addr;
}
else {
/* attribute data is in user-space memory, not a VBO */
uint bytes = (arrays[mesaAttr]->Size
* _mesa_sizeof_type(arrays[mesaAttr]->Type)
* (max_index + 1));
/* wrap user data */
vbuffers[attr].buffer
= pipe_user_buffer_create(pipe->screen, (void *) arrays[mesaAttr]->Ptr,
bytes,
PIPE_BIND_VERTEX_BUFFER);
vbuffers[attr].buffer_offset = 0;
velements[attr].src_offset = 0;
}
/* common-case setup */
vbuffers[attr].stride = arrays[mesaAttr]->StrideB; /* in bytes */
velements[attr].instance_divisor = 0;
velements[attr].vertex_buffer_index = attr;
velements[attr].src_format =
st_pipe_vertex_format(arrays[mesaAttr]->Type,
arrays[mesaAttr]->Size,
arrays[mesaAttr]->Format,
arrays[mesaAttr]->Normalized,
arrays[mesaAttr]->Integer);
assert(velements[attr].src_format);
/* tell draw about this attribute */
#if 0
draw_set_vertex_buffer(draw, attr, &vbuffer[attr]);
#endif
/* map the attrib buffer */
map = pipe_buffer_map(pipe, vbuffers[attr].buffer,
PIPE_TRANSFER_READ,
&vb_transfer[attr]);
draw_set_mapped_vertex_buffer(draw, attr, map);
}
draw_set_vertex_buffers(draw, vp->num_inputs, vbuffers);
draw_set_vertex_elements(draw, vp->num_inputs, velements);
memset(&ibuffer, 0, sizeof(ibuffer));
if (ib) {
struct gl_buffer_object *bufobj = ib->obj;
ibuffer.index_size = vbo_sizeof_ib_type(ib->type);
if (ibuffer.index_size == 0)
goto out_unref_vertex;
if (bufobj && bufobj->Name) {
struct st_buffer_object *stobj = st_buffer_object(bufobj);
pipe_resource_reference(&ibuffer.buffer, stobj->buffer);
ibuffer.offset = pointer_to_offset(ib->ptr);
mapped_indices = pipe_buffer_map(pipe, stobj->buffer,
PIPE_TRANSFER_READ, &ib_transfer);
}
else {
/* skip setting ibuffer.buffer as the draw module does not use it */
mapped_indices = ib->ptr;
}
draw_set_index_buffer(draw, &ibuffer);
draw_set_mapped_index_buffer(draw, mapped_indices);
}
/* set the constant buffer */
draw_set_mapped_constant_buffer(st->draw, PIPE_SHADER_VERTEX, 0,
st->state.constants[PIPE_SHADER_VERTEX].ptr,
st->state.constants[PIPE_SHADER_VERTEX].size);
/* draw here */
for (i = 0; i < nr_prims; i++) {
draw_arrays(draw, prims[i].mode, prims[i].start, prims[i].count);
}
/*
* unmap vertex/index buffers
*/
if (ib) {
draw_set_mapped_index_buffer(draw, NULL);
draw_set_index_buffer(draw, NULL);
if (ib_transfer)
pipe_buffer_unmap(pipe, ib_transfer);
pipe_resource_reference(&ibuffer.buffer, NULL);
}
out_unref_vertex:
for (attr = 0; attr < vp->num_inputs; attr++) {
pipe_buffer_unmap(pipe, vb_transfer[attr]);
draw_set_mapped_vertex_buffer(draw, attr, NULL);
pipe_resource_reference(&vbuffers[attr].buffer, NULL);
}
draw_set_vertex_buffers(draw, 0, NULL);
}
