/* Creates a new VS constant buffer reflecting the current VS program's
* constants, if needed by the VS program.
*
* Otherwise, constants go through the CURBEs using the brw_constant_buffer
* state atom.
*/
static void
brw_upload_vs_pull_constants(struct brw_context *brw)
{
struct brw_stage_state *stage_state = &brw->vs.base;
/* BRW_NEW_VERTEX_PROGRAM */
struct brw_program *vp = (struct brw_program *) brw->vertex_program;
/* BRW_NEW_VS_PROG_DATA */
const struct brw_stage_prog_data *prog_data = brw->vs.base.prog_data;
_mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_VERTEX);
/* _NEW_PROGRAM_CONSTANTS */
brw_upload_pull_constants(brw, BRW_NEW_VS_CONSTBUF, &vp->program,
stage_state, prog_data);
}
static void
gen7_upload_tes_push_constants(struct brw_context *brw)
{
struct brw_stage_state *stage_state = &brw->tes.base;
/* BRW_NEW_TESS_PROGRAMS */
const struct brw_program *tep = brw_program_const(brw->tess_eval_program);
if (tep) {
/* BRW_NEW_TES_PROG_DATA */
const struct brw_stage_prog_data *prog_data = brw->tes.base.prog_data;
_mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_TESS_EVAL);
gen6_upload_push_constants(brw, &tep->program, prog_data, stage_state,
AUB_TRACE_VS_CONSTANTS);
}
gen7_upload_constant_state(brw, stage_state, tep, _3DSTATE_CONSTANT_DS);
}
/* Creates a new TES constant buffer reflecting the current TES program's
* constants, if needed by the TES program.
*
* Otherwise, constants go through the CURBEs using the brw_constant_buffer
* state atom.
*/
static void
brw_upload_tes_pull_constants(struct brw_context *brw)
{
struct brw_stage_state *stage_state = &brw->tes.base;
/* BRW_NEW_TESS_PROGRAMS */
struct brw_program *dp = (struct brw_program *) brw->tess_eval_program;
if (!dp)
return;
/* BRW_NEW_TES_PROG_DATA */
const struct brw_stage_prog_data *prog_data = brw->tes.base.prog_data;
_mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_TESS_EVAL);
/* _NEW_PROGRAM_CONSTANTS */
brw_upload_pull_constants(brw, BRW_NEW_TES_CONSTBUF, &dp->program,
stage_state, prog_data);
}
/* Creates a new GS constant buffer reflecting the current GS program's
* constants, if needed by the GS program.
*
* Otherwise, constants go through the CURBEs using the brw_constant_buffer
* state atom.
*/
static void
brw_upload_gs_pull_constants(struct brw_context *brw)
{
struct brw_stage_state *stage_state = &brw->gs.base;
/* BRW_NEW_GEOMETRY_PROGRAM */
struct brw_geometry_program *gp =
(struct brw_geometry_program *) brw->geometry_program;
if (!gp)
return;
/* BRW_NEW_GS_PROG_DATA */
const struct brw_stage_prog_data *prog_data = brw->gs.base.prog_data;
_mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_GEOMETRY);
/* _NEW_PROGRAM_CONSTANTS */
brw_upload_pull_constants(brw, BRW_NEW_GS_CONSTBUF, &gp->program.Base,
stage_state, prog_data);
}
static void
gen6_upload_vs_push_constants(struct brw_context *brw)
{
struct brw_stage_state *stage_state = &brw->vs.base;
/* _BRW_NEW_VERTEX_PROGRAM */
const struct brw_vertex_program *vp =
brw_vertex_program_const(brw->vertex_program);
/* BRW_NEW_VS_PROG_DATA */
const struct brw_stage_prog_data *prog_data = brw->vs.base.prog_data;
_mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_VERTEX);
gen6_upload_push_constants(brw, &vp->program.Base, prog_data,
stage_state, AUB_TRACE_VS_CONSTANTS);
if (brw->gen >= 7) {
if (brw->gen == 7 && !brw->is_haswell && !brw->is_baytrail)
gen7_emit_vs_workaround_flush(brw);
gen7_upload_constant_state(brw, stage_state, true /* active */,
_3DSTATE_CONSTANT_VS);
}
}
/**
* Pass the given program parameters to the graphics pipe as a
* constant buffer.
*/
void st_upload_constants(struct st_context *st, struct gl_program *prog)
{
gl_shader_stage stage = prog->info.stage;
struct gl_program_parameter_list *params = prog->Parameters;
enum pipe_shader_type shader_type = pipe_shader_type_from_mesa(stage);
assert(shader_type == PIPE_SHADER_VERTEX ||
shader_type == PIPE_SHADER_FRAGMENT ||
shader_type == PIPE_SHADER_GEOMETRY ||
shader_type == PIPE_SHADER_TESS_CTRL ||
shader_type == PIPE_SHADER_TESS_EVAL ||
shader_type == PIPE_SHADER_COMPUTE);
/* update the ATI constants before rendering */
if (shader_type == PIPE_SHADER_FRAGMENT && st->fp->ati_fs) {
struct ati_fragment_shader *ati_fs = st->fp->ati_fs;
unsigned c;
for (c = 0; c < MAX_NUM_FRAGMENT_CONSTANTS_ATI; c++) {
if (ati_fs->LocalConstDef & (1 << c))
memcpy(params->ParameterValues[c],
ati_fs->Constants[c], sizeof(GLfloat) * 4);
else
memcpy(params->ParameterValues[c],
st->ctx->ATIFragmentShader.GlobalConstants[c], sizeof(GLfloat) * 4);
}
}
/* Make all bindless samplers/images bound texture/image units resident in
* the context.
*/
st_make_bound_samplers_resident(st, prog);
st_make_bound_images_resident(st, prog);
/* update constants */
if (params && params->NumParameters) {
struct pipe_constant_buffer cb;
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.
*/
if (params->StateFlags)
_mesa_load_state_parameters(st->ctx, params);
_mesa_shader_write_subroutine_indices(st->ctx, stage);
cb.buffer = NULL;
cb.user_buffer = params->ParameterValues;
cb.buffer_offset = 0;
cb.buffer_size = paramBytes;
if (ST_DEBUG & DEBUG_CONSTANTS) {
debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
__func__, shader_type, params->NumParameters,
params->StateFlags);
_mesa_print_parameter_list(params);
}
cso_set_constant_buffer(st->cso_context, shader_type, 0, &cb);
pipe_resource_reference(&cb.buffer, NULL);
st->state.constants[shader_type].ptr = params->ParameterValues;
st->state.constants[shader_type].size = paramBytes;
}
else if (st->state.constants[shader_type].ptr) {
/* Unbind. */
st->state.constants[shader_type].ptr = NULL;
st->state.constants[shader_type].size = 0;
cso_set_constant_buffer(st->cso_context, shader_type, 0, NULL);
}
}
/**
* 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,
gl_shader_stage stage)
{
enum pipe_shader_type shader_type = st_shader_stage_to_ptarget(stage);
assert(shader_type == PIPE_SHADER_VERTEX ||
shader_type == PIPE_SHADER_FRAGMENT ||
shader_type == PIPE_SHADER_GEOMETRY ||
shader_type == PIPE_SHADER_TESS_CTRL ||
shader_type == PIPE_SHADER_TESS_EVAL ||
shader_type == PIPE_SHADER_COMPUTE);
/* update the ATI constants before rendering */
if (shader_type == PIPE_SHADER_FRAGMENT && st->fp->ati_fs) {
struct ati_fragment_shader *ati_fs = st->fp->ati_fs;
unsigned c;
for (c = 0; c < MAX_NUM_FRAGMENT_CONSTANTS_ATI; c++) {
if (ati_fs->LocalConstDef & (1 << c))
memcpy(params->ParameterValues[c],
ati_fs->Constants[c], sizeof(GLfloat) * 4);
else
memcpy(params->ParameterValues[c],
st->ctx->ATIFragmentShader.GlobalConstants[c], sizeof(GLfloat) * 4);
}
}
/* update constants */
if (params && params->NumParameters) {
struct pipe_constant_buffer cb;
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.
*/
if (params->StateFlags)
_mesa_load_state_parameters(st->ctx, params);
_mesa_shader_write_subroutine_indices(st->ctx, stage);
/* 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.
*/
if (st->constbuf_uploader) {
cb.buffer = NULL;
cb.user_buffer = NULL;
u_upload_data(st->constbuf_uploader, 0, paramBytes,
st->ctx->Const.UniformBufferOffsetAlignment,
params->ParameterValues, &cb.buffer_offset, &cb.buffer);
u_upload_unmap(st->constbuf_uploader);
} else {
cb.buffer = NULL;
cb.user_buffer = params->ParameterValues;
cb.buffer_offset = 0;
}
cb.buffer_size = paramBytes;
if (ST_DEBUG & DEBUG_CONSTANTS) {
debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
__func__, shader_type, params->NumParameters,
params->StateFlags);
_mesa_print_parameter_list(params);
}
cso_set_constant_buffer(st->cso_context, shader_type, 0, &cb);
pipe_resource_reference(&cb.buffer, NULL);
st->state.constants[shader_type].ptr = params->ParameterValues;
st->state.constants[shader_type].size = paramBytes;
}
else if (st->state.constants[shader_type].ptr) {
/* Unbind. */
st->state.constants[shader_type].ptr = NULL;
st->state.constants[shader_type].size = 0;
cso_set_constant_buffer(st->cso_context, shader_type, 0, NULL);
}
}
