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mesa/src/mesa/state_tracker/st_atom_array.c
Marek Olšák f4d272f6f6 st/mesa: fold cso calls into setup_(non_)interleaved_attribs 
Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
2017-05-10 19:29:08 +02:00

678 lines
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/**************************************************************************
*
* Copyright 2007 VMware, Inc.
* Copyright 2012 Marek Olšák <maraeo@gmail.com>
* All Rights Reserved.
*
* 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 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 AUTHORS AND/OR ITS 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.
*
**************************************************************************/
/*
* This converts the VBO's vertex attribute/array information into
* Gallium vertex state and binds it.
*
* Authors:
* Keith Whitwell <keithw@vmware.com>
* Marek Olšák <maraeo@gmail.com>
*/
#include "st_context.h"
#include "st_atom.h"
#include "st_cb_bufferobjects.h"
#include "st_draw.h"
#include "st_program.h"
#include "cso_cache/cso_context.h"
#include "util/u_math.h"
#include "main/bufferobj.h"
#include "main/glformats.h"
/* vertex_formats[gltype - GL_BYTE][integer*2 + normalized][size - 1] */
static const uint16_t vertex_formats[][4][4] = {
{ /* GL_BYTE */
{
PIPE_FORMAT_R8_SSCALED,
PIPE_FORMAT_R8G8_SSCALED,
PIPE_FORMAT_R8G8B8_SSCALED,
PIPE_FORMAT_R8G8B8A8_SSCALED
},
{
PIPE_FORMAT_R8_SNORM,
PIPE_FORMAT_R8G8_SNORM,
PIPE_FORMAT_R8G8B8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM
},
{
PIPE_FORMAT_R8_SINT,
PIPE_FORMAT_R8G8_SINT,
PIPE_FORMAT_R8G8B8_SINT,
PIPE_FORMAT_R8G8B8A8_SINT
},
},
{ /* GL_UNSIGNED_BYTE */
{
PIPE_FORMAT_R8_USCALED,
PIPE_FORMAT_R8G8_USCALED,
PIPE_FORMAT_R8G8B8_USCALED,
PIPE_FORMAT_R8G8B8A8_USCALED
},
{
PIPE_FORMAT_R8_UNORM,
PIPE_FORMAT_R8G8_UNORM,
PIPE_FORMAT_R8G8B8_UNORM,
PIPE_FORMAT_R8G8B8A8_UNORM
},
{
PIPE_FORMAT_R8_UINT,
PIPE_FORMAT_R8G8_UINT,
PIPE_FORMAT_R8G8B8_UINT,
PIPE_FORMAT_R8G8B8A8_UINT
},
},
{ /* GL_SHORT */
{
PIPE_FORMAT_R16_SSCALED,
PIPE_FORMAT_R16G16_SSCALED,
PIPE_FORMAT_R16G16B16_SSCALED,
PIPE_FORMAT_R16G16B16A16_SSCALED
},
{
PIPE_FORMAT_R16_SNORM,
PIPE_FORMAT_R16G16_SNORM,
PIPE_FORMAT_R16G16B16_SNORM,
PIPE_FORMAT_R16G16B16A16_SNORM
},
{
PIPE_FORMAT_R16_SINT,
PIPE_FORMAT_R16G16_SINT,
PIPE_FORMAT_R16G16B16_SINT,
PIPE_FORMAT_R16G16B16A16_SINT
},
},
{ /* GL_UNSIGNED_SHORT */
{
PIPE_FORMAT_R16_USCALED,
PIPE_FORMAT_R16G16_USCALED,
PIPE_FORMAT_R16G16B16_USCALED,
PIPE_FORMAT_R16G16B16A16_USCALED
},
{
PIPE_FORMAT_R16_UNORM,
PIPE_FORMAT_R16G16_UNORM,
PIPE_FORMAT_R16G16B16_UNORM,
PIPE_FORMAT_R16G16B16A16_UNORM
},
{
PIPE_FORMAT_R16_UINT,
PIPE_FORMAT_R16G16_UINT,
PIPE_FORMAT_R16G16B16_UINT,
PIPE_FORMAT_R16G16B16A16_UINT
},
},
{ /* GL_INT */
{
PIPE_FORMAT_R32_SSCALED,
PIPE_FORMAT_R32G32_SSCALED,
PIPE_FORMAT_R32G32B32_SSCALED,
PIPE_FORMAT_R32G32B32A32_SSCALED
},
{
PIPE_FORMAT_R32_SNORM,
PIPE_FORMAT_R32G32_SNORM,
PIPE_FORMAT_R32G32B32_SNORM,
PIPE_FORMAT_R32G32B32A32_SNORM
},
{
PIPE_FORMAT_R32_SINT,
PIPE_FORMAT_R32G32_SINT,
PIPE_FORMAT_R32G32B32_SINT,
PIPE_FORMAT_R32G32B32A32_SINT
},
},
{ /* GL_UNSIGNED_INT */
{
PIPE_FORMAT_R32_USCALED,
PIPE_FORMAT_R32G32_USCALED,
PIPE_FORMAT_R32G32B32_USCALED,
PIPE_FORMAT_R32G32B32A32_USCALED
},
{
PIPE_FORMAT_R32_UNORM,
PIPE_FORMAT_R32G32_UNORM,
PIPE_FORMAT_R32G32B32_UNORM,
PIPE_FORMAT_R32G32B32A32_UNORM
},
{
PIPE_FORMAT_R32_UINT,
PIPE_FORMAT_R32G32_UINT,
PIPE_FORMAT_R32G32B32_UINT,
PIPE_FORMAT_R32G32B32A32_UINT
},
},
{ /* GL_FLOAT */
{
PIPE_FORMAT_R32_FLOAT,
PIPE_FORMAT_R32G32_FLOAT,
PIPE_FORMAT_R32G32B32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT
},
{
PIPE_FORMAT_R32_FLOAT,
PIPE_FORMAT_R32G32_FLOAT,
PIPE_FORMAT_R32G32B32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT
},
},
{{0}}, /* GL_2_BYTES */
{{0}}, /* GL_3_BYTES */
{{0}}, /* GL_4_BYTES */
{ /* GL_DOUBLE */
{
PIPE_FORMAT_R64_FLOAT,
PIPE_FORMAT_R64G64_FLOAT,
PIPE_FORMAT_R64G64B64_FLOAT,
PIPE_FORMAT_R64G64B64A64_FLOAT
},
{
PIPE_FORMAT_R64_FLOAT,
PIPE_FORMAT_R64G64_FLOAT,
PIPE_FORMAT_R64G64B64_FLOAT,
PIPE_FORMAT_R64G64B64A64_FLOAT
},
},
{ /* GL_HALF_FLOAT */
{
PIPE_FORMAT_R16_FLOAT,
PIPE_FORMAT_R16G16_FLOAT,
PIPE_FORMAT_R16G16B16_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT
},
{
PIPE_FORMAT_R16_FLOAT,
PIPE_FORMAT_R16G16_FLOAT,
PIPE_FORMAT_R16G16B16_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT
},
},
{ /* GL_FIXED */
{
PIPE_FORMAT_R32_FIXED,
PIPE_FORMAT_R32G32_FIXED,
PIPE_FORMAT_R32G32B32_FIXED,
PIPE_FORMAT_R32G32B32A32_FIXED
},
{
PIPE_FORMAT_R32_FIXED,
PIPE_FORMAT_R32G32_FIXED,
PIPE_FORMAT_R32G32B32_FIXED,
PIPE_FORMAT_R32G32B32A32_FIXED
},
},
};
/**
* Return a PIPE_FORMAT_x for the given GL datatype and size.
*/
enum pipe_format
st_pipe_vertex_format(GLenum type, GLuint size, GLenum format,
GLboolean normalized, GLboolean integer)
{
unsigned index;
assert(size >= 1 && size <= 4);
assert(format == GL_RGBA || format == GL_BGRA);
switch (type) {
case GL_HALF_FLOAT_OES:
type = GL_HALF_FLOAT;
break;
case GL_INT_2_10_10_10_REV:
assert(size == 4 && !integer);
if (format == GL_BGRA) {
if (normalized)
return PIPE_FORMAT_B10G10R10A2_SNORM;
else
return PIPE_FORMAT_B10G10R10A2_SSCALED;
} else {
if (normalized)
return PIPE_FORMAT_R10G10B10A2_SNORM;
else
return PIPE_FORMAT_R10G10B10A2_SSCALED;
}
break;
case GL_UNSIGNED_INT_2_10_10_10_REV:
assert(size == 4 && !integer);
if (format == GL_BGRA) {
if (normalized)
return PIPE_FORMAT_B10G10R10A2_UNORM;
else
return PIPE_FORMAT_B10G10R10A2_USCALED;
} else {
if (normalized)
return PIPE_FORMAT_R10G10B10A2_UNORM;
else
return PIPE_FORMAT_R10G10B10A2_USCALED;
}
break;
case GL_UNSIGNED_INT_10F_11F_11F_REV:
assert(size == 3 && !integer && format == GL_RGBA);
return PIPE_FORMAT_R11G11B10_FLOAT;
case GL_UNSIGNED_BYTE:
if (format == GL_BGRA) {
/* this is an odd-ball case */
assert(normalized);
return PIPE_FORMAT_B8G8R8A8_UNORM;
}
break;
}
index = integer*2 + normalized;
assert(index <= 2);
assert(type >= GL_BYTE && type <= GL_FIXED);
return vertex_formats[type - GL_BYTE][index][size-1];
}
static const struct gl_vertex_array *
get_client_array(const struct st_vertex_program *vp,
const struct gl_vertex_array **arrays,
int attr)
{
const GLuint mesaAttr = vp->index_to_input[attr];
/* st_program uses 0xffffffff to denote a double placeholder attribute */
if (mesaAttr == ST_DOUBLE_ATTRIB_PLACEHOLDER)
return NULL;
return arrays[mesaAttr];
}
/**
* Examine the active arrays to determine if we have interleaved
* vertex arrays all living in one VBO, or all living in user space.
*/
static GLboolean
is_interleaved_arrays(const struct st_vertex_program *vp,
const struct st_vp_variant *vpv,
const struct gl_vertex_array **arrays)
{
GLuint attr;
const struct gl_buffer_object *firstBufObj = NULL;
GLint firstStride = -1;
const GLubyte *firstPtr = NULL;
GLboolean userSpaceBuffer = GL_FALSE;
for (attr = 0; attr < vpv->num_inputs; attr++) {
const struct gl_vertex_array *array;
const struct gl_buffer_object *bufObj;
GLsizei stride;
array = get_client_array(vp, arrays, attr);
if (!array)
continue;
stride = array->StrideB; /* in bytes */
bufObj = array->BufferObj;
if (attr == 0) {
/* save info about the first array */
firstStride = stride;
firstPtr = array->Ptr;
firstBufObj = bufObj;
userSpaceBuffer = !bufObj || !bufObj->Name;
}
else {
/* check if other arrays interleave with the first, in same buffer */
if (stride != firstStride)
return GL_FALSE; /* strides don't match */
if (bufObj != firstBufObj)
return GL_FALSE; /* arrays in different VBOs */
if (llabs(array->Ptr - firstPtr) > firstStride)
return GL_FALSE; /* arrays start too far apart */
if ((!_mesa_is_bufferobj(bufObj)) != userSpaceBuffer)
return GL_FALSE; /* mix of VBO and user-space arrays */
}
}
return GL_TRUE;
}
static void init_velement(struct pipe_vertex_element *velement,
int src_offset, int format,
int instance_divisor, int vbo_index)
{
velement->src_offset = src_offset;
velement->src_format = format;
velement->instance_divisor = instance_divisor;
velement->vertex_buffer_index = vbo_index;
assert(velement->src_format);
}
static void init_velement_lowered(const struct st_vertex_program *vp,
struct pipe_vertex_element *velements,
int src_offset, int format,
int instance_divisor, int vbo_index,
int nr_components, GLboolean doubles,
GLuint *attr_idx)
{
int idx = *attr_idx;
if (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);
}
idx++;
}
} else {
init_velement(&velements[idx], src_offset,
format, instance_divisor, vbo_index);
idx++;
}
*attr_idx = idx;
}
static void
set_vertex_attribs(struct st_context *st,
struct pipe_vertex_buffer *vbuffers,
unsigned num_vbuffers,
struct pipe_vertex_element *velements,
unsigned num_velements)
{
struct cso_context *cso = st->cso_context;
cso_set_vertex_buffers(cso, 0, num_vbuffers, vbuffers);
if (st->last_num_vbuffers > num_vbuffers) {
/* Unbind remaining buffers, if any. */
cso_set_vertex_buffers(cso, num_vbuffers,
st->last_num_vbuffers - num_vbuffers, NULL);
}
st->last_num_vbuffers = num_vbuffers;
cso_set_vertex_elements(cso, num_velements, velements);
}
/**
* 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(struct st_context *st,
const struct st_vertex_program *vp,
const struct st_vp_variant *vpv,
const struct gl_vertex_array **arrays)
{
struct pipe_vertex_buffer vbuffer;
struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS] = {{0}};
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 struct gl_vertex_array *array;
array = get_client_array(vp, arrays, 0);
assert(array);
/* 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;
array = get_client_array(vp, arrays, attr);
if (!array)
continue;
start = array->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;) {
const struct gl_vertex_array *array;
unsigned src_offset;
unsigned src_format;
array = get_client_array(vp, arrays, attr);
assert(array);
src_offset = (unsigned) (array->Ptr - low_addr);
assert(array->_ElementSize ==
_mesa_bytes_per_vertex_attrib(array->Size, array->Type));
src_format = st_pipe_vertex_format(array->Type,
array->Size,
array->Format,
array->Normalized,
array->Integer);
init_velement_lowered(vp, velements, src_offset, src_format,
array->InstanceDivisor, 0,
array->Size, array->Doubles, &attr);
}
/*
* Return the vbuffer info and setup user-space attrib info, if needed.
*/
if (vpv->num_inputs == 0) {
/* just defensive coding here */
vbuffer.buffer.resource = NULL;
vbuffer.is_user_buffer = false;
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.resource = stobj->buffer;
vbuffer.is_user_buffer = false;
vbuffer.buffer_offset = pointer_to_offset(low_addr);
vbuffer.stride = stride;
}
else {
/* all interleaved arrays in user memory */
vbuffer.buffer.user = low_addr;
vbuffer.is_user_buffer = !!low_addr; /* if NULL, then unbind */
vbuffer.buffer_offset = 0;
vbuffer.stride = stride;
}
set_vertex_attribs(st, &vbuffer, vpv->num_inputs ? 1 : 0,
velements, vpv->num_inputs);
return TRUE;
}
/**
* 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_vertex_array **arrays)
{
struct gl_context *ctx = st->ctx;
struct pipe_vertex_buffer vbuffer[PIPE_MAX_ATTRIBS];
struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS] = {{0}};
unsigned num_vbuffers = 0;
GLuint attr;
for (attr = 0; attr < vpv->num_inputs;) {
const GLuint mesaAttr = vp->index_to_input[attr];
const struct gl_vertex_array *array;
struct gl_buffer_object *bufobj;
GLsizei stride;
unsigned src_format;
unsigned bufidx;
array = get_client_array(vp, arrays, attr);
assert(array);
bufidx = num_vbuffers++;
stride = array->StrideB;
bufobj = array->BufferObj;
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_vertex_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[bufidx].buffer.resource = stobj->buffer;
vbuffer[bufidx].is_user_buffer = false;
vbuffer[bufidx].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[bufidx].buffer.user = ptr;
vbuffer[bufidx].is_user_buffer = !!ptr; /* if NULL, then unbind */
vbuffer[bufidx].buffer_offset = 0;
}
/* common-case setup */
vbuffer[bufidx].stride = stride; /* in bytes */
src_format = st_pipe_vertex_format(array->Type,
array->Size,
array->Format,
array->Normalized,
array->Integer);
init_velement_lowered(vp, velements, 0, src_format,
array->InstanceDivisor, bufidx,
array->Size, array->Doubles, &attr);
}
set_vertex_attribs(st, vbuffer, num_vbuffers, velements, vpv->num_inputs);
return TRUE;
}
void st_update_array(struct st_context *st)
{
struct gl_context *ctx = st->ctx;
const struct gl_vertex_array **arrays = ctx->Array._DrawArrays;
const struct st_vertex_program *vp;
const struct st_vp_variant *vpv;
st->vertex_array_out_of_memory = FALSE;
/* No drawing has been done yet, so do nothing. */
if (!arrays)
return;
/* vertex program validation must be done before this */
vp = st->vp;
vpv = st->vp_variant;
if (is_interleaved_arrays(vp, vpv, arrays)) {
if (!setup_interleaved_attribs(st, vp, vpv, arrays)) {
st->vertex_array_out_of_memory = TRUE;
return;
}
}
else {
if (!setup_non_interleaved_attribs(st, vp, vpv, arrays)) {
st->vertex_array_out_of_memory = TRUE;
return;
}
}
}
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