/**
* 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)
{
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);
/* 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);
/* 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,
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);
}
}
void
cso_set_constant_buffer_resource(struct cso_context *cso,
unsigned shader_stage,
unsigned index,
struct pipe_resource *buffer)
{
if (buffer) {
struct pipe_constant_buffer cb;
cb.buffer = buffer;
cb.buffer_offset = 0;
cb.buffer_size = buffer->width0;
cb.user_buffer = NULL;
cso_set_constant_buffer(cso, shader_stage, index, &cb);
} else {
cso_set_constant_buffer(cso, shader_stage, index, NULL);
}
}
void
cso_restore_constant_buffer_slot0(struct cso_context *cso,
unsigned shader_stage)
{
cso_set_constant_buffer(cso, shader_stage, 0,
&cso->aux_constbuf_saved[shader_stage]);
pipe_resource_reference(&cso->aux_constbuf_saved[shader_stage].buffer,
NULL);
}
static void st_bind_ubos(struct st_context *st, struct gl_program *prog,
unsigned shader_type)
{
unsigned i;
struct pipe_constant_buffer cb = { 0 };
if (!prog)
return;
for (i = 0; i < prog->info.num_ubos; i++) {
struct gl_buffer_binding *binding;
struct st_buffer_object *st_obj;
binding =
&st->ctx->UniformBufferBindings[prog->sh.UniformBlocks[i]->Binding];
st_obj = st_buffer_object(binding->BufferObject);
cb.buffer = st_obj->buffer;
if (cb.buffer) {
cb.buffer_offset = binding->Offset;
cb.buffer_size = cb.buffer->width0 - binding->Offset;
/* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
* Take the minimum just to be sure.
*/
if (!binding->AutomaticSize)
cb.buffer_size = MIN2(cb.buffer_size, (unsigned) binding->Size);
}
else {
cb.buffer_offset = 0;
cb.buffer_size = 0;
}
cso_set_constant_buffer(st->cso_context, shader_type, 1 + i, &cb);
}
}
/**
* 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);
}
}
/* Setup all vertex pipeline state, rasterizer state, and fragment shader
* constants, and issue the draw call for PBO upload/download.
*
* The caller is responsible for saving and restoring state, as well as for
* setting other fragment shader state (fragment shader, samplers), and
* framebuffer/viewport/DSA/blend state.
*/
bool
st_pbo_draw(struct st_context *st, const struct st_pbo_addresses *addr,
unsigned surface_width, unsigned surface_height)
{
struct cso_context *cso = st->cso_context;
/* Setup vertex and geometry shaders */
if (!st->pbo.vs) {
st->pbo.vs = st_pbo_create_vs(st);
if (!st->pbo.vs)
return false;
}
if (addr->depth != 1 && st->pbo.use_gs && !st->pbo.gs) {
st->pbo.gs = st_pbo_create_gs(st);
if (!st->pbo.gs)
return false;
}
cso_set_vertex_shader_handle(cso, st->pbo.vs);
cso_set_geometry_shader_handle(cso, addr->depth != 1 ? st->pbo.gs : NULL);
cso_set_tessctrl_shader_handle(cso, NULL);
cso_set_tesseval_shader_handle(cso, NULL);
/* Upload vertices */
{
struct pipe_vertex_buffer vbo = {0};
struct pipe_vertex_element velem;
float x0 = (float) addr->xoffset / surface_width * 2.0f - 1.0f;
float y0 = (float) addr->yoffset / surface_height * 2.0f - 1.0f;
float x1 = (float) (addr->xoffset + addr->width) / surface_width * 2.0f - 1.0f;
float y1 = (float) (addr->yoffset + addr->height) / surface_height * 2.0f - 1.0f;
float *verts = NULL;
vbo.stride = 2 * sizeof(float);
u_upload_alloc(st->pipe->stream_uploader, 0, 8 * sizeof(float), 4,
&vbo.buffer_offset, &vbo.buffer.resource, (void **) &verts);
if (!verts)
return false;
verts[0] = x0;
verts[1] = y0;
verts[2] = x0;
verts[3] = y1;
verts[4] = x1;
verts[5] = y0;
verts[6] = x1;
verts[7] = y1;
u_upload_unmap(st->pipe->stream_uploader);
velem.src_offset = 0;
velem.instance_divisor = 0;
velem.vertex_buffer_index = 0;
velem.src_format = PIPE_FORMAT_R32G32_FLOAT;
cso_set_vertex_elements(cso, 1, &velem);
cso_set_vertex_buffers(cso, velem.vertex_buffer_index, 1, &vbo);
pipe_resource_reference(&vbo.buffer.resource, NULL);
}
/* Upload constants */
{
struct pipe_constant_buffer cb;
cb.buffer = NULL;
cb.user_buffer = &addr->constants;
cb.buffer_offset = 0;
cb.buffer_size = sizeof(addr->constants);
cso_set_constant_buffer(cso, PIPE_SHADER_FRAGMENT, 0, &cb);
pipe_resource_reference(&cb.buffer, NULL);
}
/* Rasterizer state */
cso_set_rasterizer(cso, &st->pbo.raster);
/* Disable stream output */
cso_set_stream_outputs(cso, 0, NULL, 0);
if (addr->depth == 1) {
cso_draw_arrays(cso, PIPE_PRIM_TRIANGLE_STRIP, 0, 4);
} else {
cso_draw_arrays_instanced(cso, PIPE_PRIM_TRIANGLE_STRIP,
0, 4, 0, addr->depth);
}
return true;
}
/**
* 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);
}
}