141 lines
4.7 KiB
C
141 lines
4.7 KiB
C
/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/*
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* Authors:
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* Keith Whitwell <keith@tungstengraphics.com>
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* Brian Paul
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*/
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#include "main/imports.h"
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#include "shader/prog_parameter.h"
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#include "shader/prog_print.h"
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "pipe/p_inlines.h"
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#include "st_context.h"
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#include "st_atom.h"
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#include "st_atom_constbuf.h"
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#include "st_program.h"
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/**
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* Pass the given program parameters to the graphics pipe as a
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* constant buffer.
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* \param id either PIPE_SHADER_VERTEX or PIPE_SHADER_FRAGMENT
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*/
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void st_upload_constants( struct st_context *st,
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struct gl_program_parameter_list *params,
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unsigned id)
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{
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struct pipe_context *pipe = st->pipe;
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struct pipe_constant_buffer *cbuf = &st->state.constants[id];
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assert(id == PIPE_SHADER_VERTEX || id == PIPE_SHADER_FRAGMENT);
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/* update constants */
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if (params && params->NumParameters) {
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const uint paramBytes = params->NumParameters * sizeof(GLfloat) * 4;
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/* Update our own dependency flags. This works because this
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* function will also be called whenever the program changes.
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*/
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st->constants.tracked_state[id].dirty.mesa =
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(params->StateFlags | _NEW_PROGRAM);
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_mesa_load_state_parameters(st->ctx, params);
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/* We always need to get a new buffer, to keep the drivers simple and
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* avoid gratuitous rendering synchronization.
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*/
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pipe_buffer_reference(pipe->screen, &cbuf->buffer, NULL );
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cbuf->buffer = pipe_buffer_create(pipe->screen, 16, PIPE_BUFFER_USAGE_CONSTANT,
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paramBytes );
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if (0)
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{
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printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
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__FUNCTION__, id, params->NumParameters, params->StateFlags);
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_mesa_print_parameter_list(params);
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}
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/* load Mesa constants into the constant buffer */
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if (cbuf->buffer) {
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void *map = pipe_buffer_map(pipe->screen, cbuf->buffer,
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PIPE_BUFFER_USAGE_CPU_WRITE);
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memcpy(map, params->ParameterValues, paramBytes);
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pipe_buffer_unmap(pipe->screen, cbuf->buffer);
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}
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st->pipe->set_constant_buffer(st->pipe, id, 0, cbuf);
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}
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else {
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st->constants.tracked_state[id].dirty.mesa = 0;
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// st->pipe->set_constant_buffer(st->pipe, id, 0, NULL);
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}
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}
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/* Vertex shader:
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*/
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static void update_vs_constants(struct st_context *st )
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{
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struct st_vertex_program *vp = st->vp;
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struct gl_program_parameter_list *params = vp->Base.Base.Parameters;
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st_upload_constants( st, params, PIPE_SHADER_VERTEX );
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}
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const struct st_tracked_state st_update_vs_constants = {
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"st_update_vs_constants", /* name */
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{ /* dirty */
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0, /* set dynamically above */ /* mesa */
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ST_NEW_VERTEX_PROGRAM, /* st */
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},
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update_vs_constants /* update */
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};
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/* Fragment shader:
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*/
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static void update_fs_constants(struct st_context *st )
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{
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struct st_fragment_program *fp = st->fp;
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struct gl_program_parameter_list *params = fp->Base.Base.Parameters;
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st_upload_constants( st, params, PIPE_SHADER_FRAGMENT );
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}
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const struct st_tracked_state st_update_fs_constants = {
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"st_update_fs_constants", /* name */
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{ /* dirty */
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0, /* set dynamically above */ /* mesa */
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ST_NEW_FRAGMENT_PROGRAM, /* st */
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},
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update_fs_constants /* update */
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};
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