WebSVN – Kolibri OS – Blame – /programs/develop/libraries/Mesa/src/mesa/state_tracker/st_atom_constbuf.c

Rev	Author	Line No.	Line
1901	serge	1	/**************************************************************************
		2	*
		3	* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
		4	* All Rights Reserved.
		5	*
		6	* Permission is hereby granted, free of charge, to any person obtaining a
		7	* copy of this software and associated documentation files (the
		8	* "Software"), to deal in the Software without restriction, including
		9	* without limitation the rights to use, copy, modify, merge, publish,
		10	* distribute, sub license, and/or sell copies of the Software, and to
		11	* permit persons to whom the Software is furnished to do so, subject to
		12	* the following conditions:
		13	*
		14	* The above copyright notice and this permission notice (including the
		15	* next paragraph) shall be included in all copies or substantial portions
		16	* of the Software.
		17	*
		18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
		19	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
		20	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
		21	* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
		22	* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
		23	* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
		24	* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
		25	*
		26	**************************************************************************/
		27
		28	/*
		29	* Authors:
		30	* Keith Whitwell
		31	* Brian Paul
		32	*/
		33
		34	#include "main/imports.h"
		35	#include "program/prog_parameter.h"
		36	#include "program/prog_print.h"
		37
		38	#include "pipe/p_context.h"
		39	#include "pipe/p_defines.h"
		40	#include "util/u_inlines.h"
		41
		42	#include "st_debug.h"
		43	#include "st_context.h"
		44	#include "st_atom.h"
		45	#include "st_atom_constbuf.h"
		46	#include "st_program.h"
		47
		48
		49	/**
		50	* Pass the given program parameters to the graphics pipe as a
		51	* constant buffer.
		52	* \param shader_type either PIPE_SHADER_VERTEX or PIPE_SHADER_FRAGMENT
		53	*/
		54	void st_upload_constants( struct st_context *st,
		55	struct gl_program_parameter_list *params,
		56	unsigned shader_type)
		57	{
		58	struct pipe_context *pipe = st->pipe;
		59	struct pipe_resource **cbuf = &st->state.constants[shader_type];
		60
		61	assert(shader_type == PIPE_SHADER_VERTEX \|\|
		62	shader_type == PIPE_SHADER_FRAGMENT \|\|
		63	shader_type == PIPE_SHADER_GEOMETRY);
		64
		65	/* update constants */
		66	if (params && params->NumParameters) {
		67	const uint paramBytes = params->NumParameters * sizeof(GLfloat) * 4;
		68
		69	/* Update the constants which come from fixed-function state, such as
		70	* transformation matrices, fog factors, etc. The rest of the values in
		71	* the parameters list are explicitly set by the user with glUniform,
		72	* glProgramParameter(), etc.
		73	*/
		74	_mesa_load_state_parameters(st->ctx, params);
		75
		76	/* We always need to get a new buffer, to keep the drivers simple and
		77	* avoid gratuitous rendering synchronization.
		78	*/
		79	pipe_resource_reference(cbuf, NULL );
		80	*cbuf = pipe_buffer_create(pipe->screen,
		81	PIPE_BIND_CONSTANT_BUFFER,
		82	paramBytes );
		83
		84	if (ST_DEBUG & DEBUG_CONSTANTS) {
		85	debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
		86	__FUNCTION__, shader_type, params->NumParameters,
		87	params->StateFlags);
		88	_mesa_print_parameter_list(params);
		89	}
		90
		91	/* load Mesa constants into the constant buffer */
		92	pipe_buffer_write(st->pipe, *cbuf,
		93	0, paramBytes,
		94	params->ParameterValues);
		95
		96	st->pipe->set_constant_buffer(st->pipe, shader_type, 0, *cbuf);
		97	}
		98	else if (*cbuf) {
		99	st->constants.tracked_state[shader_type].dirty.mesa = 0x0;
		100
		101	pipe_resource_reference(cbuf, NULL);
		102	st->pipe->set_constant_buffer(st->pipe, shader_type, 0, NULL);
		103	}
		104	}
		105
		106
		107	/**
		108	* Vertex shader:
		109	*/
		110	static void update_vs_constants(struct st_context *st )
		111	{
		112	struct st_vertex_program *vp = st->vp;
		113	struct gl_program_parameter_list *params = vp->Base.Base.Parameters;
		114
		115	st_upload_constants( st, params, PIPE_SHADER_VERTEX );
		116	}
		117
		118
		119	const struct st_tracked_state st_update_vs_constants = {
		120	"st_update_vs_constants", /* name */
		121	{ /* dirty */
		122	(_NEW_PROGRAM \| _NEW_PROGRAM_CONSTANTS), /* mesa */
		123	ST_NEW_VERTEX_PROGRAM, /* st */
		124	},
		125	update_vs_constants /* update */
		126	};
		127
		128
		129
		130	/**
		131	* Fragment shader:
		132	*/
		133	static void update_fs_constants(struct st_context *st )
		134	{
		135	struct st_fragment_program *fp = st->fp;
		136	struct gl_program_parameter_list *params = fp->Base.Base.Parameters;
		137
		138	st_upload_constants( st, params, PIPE_SHADER_FRAGMENT );
		139	}
		140
		141
		142	const struct st_tracked_state st_update_fs_constants = {
		143	"st_update_fs_constants", /* name */
		144	{ /* dirty */
		145	(_NEW_PROGRAM \| _NEW_PROGRAM_CONSTANTS), /* mesa */
		146	ST_NEW_FRAGMENT_PROGRAM, /* st */
		147	},
		148	update_fs_constants /* update */
		149	};
		150
		151	/* Geometry shader:
		152	*/
		153	static void update_gs_constants(struct st_context *st )
		154	{
		155	struct st_geometry_program *gp = st->gp;
		156	struct gl_program_parameter_list *params;
		157
		158	if (gp) {
		159	params = gp->Base.Base.Parameters;
		160	st_upload_constants( st, params, PIPE_SHADER_GEOMETRY );
		161	}
		162	}
		163
		164	const struct st_tracked_state st_update_gs_constants = {
		165	"st_update_gs_constants", /* name */
		166	{ /* dirty */
		167	(_NEW_PROGRAM \| _NEW_PROGRAM_CONSTANTS), /* mesa */
		168	ST_NEW_GEOMETRY_PROGRAM, /* st */
		169	},
		170	update_gs_constants /* update */
		171	};

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(root)/programs/develop/libraries/Mesa/src/mesa/state_tracker/st_atom_constbuf.c – Rev 1901