0,0 → 1,291 |
/************************************************************************** |
* |
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. |
* 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 TUNGSTEN GRAPHICS 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. |
* |
**************************************************************************/ |
|
#include "main/imports.h" |
#include "main/image.h" |
#include "main/macros.h" |
|
#include "vbo/vbo.h" |
|
#include "st_context.h" |
#include "st_atom.h" |
#include "st_cb_bufferobjects.h" |
#include "st_draw.h" |
#include "st_program.h" |
|
#include "pipe/p_context.h" |
#include "pipe/p_defines.h" |
#include "util/u_inlines.h" |
#include "util/u_draw.h" |
|
#include "draw/draw_private.h" |
#include "draw/draw_context.h" |
|
|
/** |
* Set the (private) draw module's post-transformed vertex format when in |
* GL_SELECT or GL_FEEDBACK mode or for glRasterPos. |
*/ |
static void |
set_feedback_vertex_format(struct gl_context *ctx) |
{ |
#if 0 |
struct st_context *st = st_context(ctx); |
struct vertex_info vinfo; |
GLuint i; |
|
memset(&vinfo, 0, sizeof(vinfo)); |
|
if (ctx->RenderMode == GL_SELECT) { |
assert(ctx->RenderMode == GL_SELECT); |
vinfo.num_attribs = 1; |
vinfo.format[0] = FORMAT_4F; |
vinfo.interp_mode[0] = INTERP_LINEAR; |
} |
else { |
/* GL_FEEDBACK, or glRasterPos */ |
/* emit all attribs (pos, color, texcoord) as GLfloat[4] */ |
vinfo.num_attribs = st->state.vs->cso->state.num_outputs; |
for (i = 0; i < vinfo.num_attribs; i++) { |
vinfo.format[i] = FORMAT_4F; |
vinfo.interp_mode[i] = INTERP_LINEAR; |
} |
} |
|
draw_set_vertex_info(st->draw, &vinfo); |
#endif |
} |
|
|
/** |
* Helper for drawing current vertex arrays. |
*/ |
static void |
draw_arrays(struct draw_context *draw, unsigned mode, |
unsigned start, unsigned count) |
{ |
struct pipe_draw_info info; |
|
util_draw_init_info(&info); |
|
info.mode = mode; |
info.start = start; |
info.count = count; |
info.min_index = start; |
info.max_index = start + count - 1; |
|
draw_vbo(draw, &info); |
} |
|
|
/** |
* 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 _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] = {NULL}; |
struct pipe_transfer *ib_transfer = NULL; |
const struct gl_client_array **arrays = ctx->Array._DrawArrays; |
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_states(draw, 0, 1, &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; |
vbuffers[attr].user_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; |
|
/* 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, |
vbuffers[attr].buffer->width0); |
} |
else { |
vbuffers[attr].buffer = NULL; |
vbuffers[attr].user_buffer = arrays[mesaAttr]->Ptr; |
vbuffers[attr].buffer_offset = 0; |
velements[attr].src_offset = 0; |
|
draw_set_mapped_vertex_buffer(draw, attr, vbuffers[attr].user_buffer, |
~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 |
} |
|
draw_set_vertex_buffers(draw, 0, 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_indexes(draw, |
(ubyte *) mapped_indices + ibuffer.offset, |
ibuffer.index_size, ~0); |
} |
|
/* 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_indexes(draw, NULL, 0, 0); |
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++) { |
if (vb_transfer[attr]) |
pipe_buffer_unmap(pipe, vb_transfer[attr]); |
draw_set_mapped_vertex_buffer(draw, attr, NULL, 0); |
pipe_resource_reference(&vbuffers[attr].buffer, NULL); |
} |
draw_set_vertex_buffers(draw, 0, vp->num_inputs, NULL); |
} |