/************************************************************************** * * 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. * **************************************************************************/ /* * Authors: * Keith Whitwell <keith@tungstengraphics.com> * Brian Paul */ #include "main/imports.h" #include "program/prog_parameter.h" #include "program/prog_print.h" #include "pipe/p_context.h" #include "pipe/p_defines.h" #include "util/u_inlines.h" #include "st_debug.h" #include "st_context.h" #include "st_atom.h" #include "st_atom_constbuf.h" #include "st_program.h" /** * Pass the given program parameters to the graphics pipe as a * constant buffer. * \param shader_type either PIPE_SHADER_VERTEX or PIPE_SHADER_FRAGMENT */ void st_upload_constants( struct st_context *st, struct gl_program_parameter_list *params, unsigned shader_type) { struct pipe_context *pipe = st->pipe; assert(shader_type == PIPE_SHADER_VERTEX || shader_type == PIPE_SHADER_FRAGMENT || shader_type == PIPE_SHADER_GEOMETRY); /* update constants */ if (params && params->NumParameters) { struct pipe_resource *cbuf; const uint paramBytes = params->NumParameters * sizeof(GLfloat) * 4; /* Update the constants which come from fixed-function state, such as * transformation matrices, fog factors, etc. The rest of the values in * the parameters list are explicitly set by the user with glUniform, * glProgramParameter(), etc. */ _mesa_load_state_parameters(st->ctx, params); /* We always need to get a new buffer, to keep the drivers simple and * avoid gratuitous rendering synchronization. * Let's use a user buffer to avoid an unnecessary copy. */ cbuf = pipe_user_buffer_create(pipe->screen, params->ParameterValues, paramBytes, PIPE_BIND_CONSTANT_BUFFER); if (ST_DEBUG & DEBUG_CONSTANTS) { debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n", __FUNCTION__, shader_type, params->NumParameters, params->StateFlags); _mesa_print_parameter_list(params); } st->pipe->set_constant_buffer(st->pipe, shader_type, 0, cbuf); pipe_resource_reference(&cbuf, NULL); st->state.constants[shader_type].ptr = params->ParameterValues; st->state.constants[shader_type].size = paramBytes; } else if (st->state.constants[shader_type].ptr) { st->state.constants[shader_type].ptr = NULL; st->state.constants[shader_type].size = 0; st->pipe->set_constant_buffer(st->pipe, shader_type, 0, NULL); } } /** * Vertex shader: */ static void update_vs_constants(struct st_context *st ) { struct st_vertex_program *vp = st->vp; struct gl_program_parameter_list *params = vp->Base.Base.Parameters; st_upload_constants( st, params, PIPE_SHADER_VERTEX ); } const struct st_tracked_state st_update_vs_constants = { "st_update_vs_constants", /* name */ { /* dirty */ (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS), /* mesa */ ST_NEW_VERTEX_PROGRAM, /* st */ }, update_vs_constants /* update */ }; /** * Fragment shader: */ static void update_fs_constants(struct st_context *st ) { struct st_fragment_program *fp = st->fp; struct gl_program_parameter_list *params = fp->Base.Base.Parameters; st_upload_constants( st, params, PIPE_SHADER_FRAGMENT ); } const struct st_tracked_state st_update_fs_constants = { "st_update_fs_constants", /* name */ { /* dirty */ (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS), /* mesa */ ST_NEW_FRAGMENT_PROGRAM, /* st */ }, update_fs_constants /* update */ }; /* Geometry shader: */ static void update_gs_constants(struct st_context *st ) { struct st_geometry_program *gp = st->gp; struct gl_program_parameter_list *params; if (gp) { params = gp->Base.Base.Parameters; st_upload_constants( st, params, PIPE_SHADER_GEOMETRY ); } } const struct st_tracked_state st_update_gs_constants = { "st_update_gs_constants", /* name */ { /* dirty */ (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS), /* mesa */ ST_NEW_GEOMETRY_PROGRAM, /* st */ }, update_gs_constants /* update */ };