void *ureg_create_shader( struct ureg_program *ureg,
struct pipe_context *pipe )
{
struct pipe_shader_state state;
state.tokens = ureg_finalize(ureg);
if(!state.tokens)
return NULL;
if (ureg->processor == TGSI_PROCESSOR_VERTEX)
return pipe->create_vs_state( pipe, &state );
else
return pipe->create_fs_state( pipe, &state );
}
const struct tgsi_token *ureg_get_tokens( struct ureg_program *ureg,
unsigned *nr_tokens )
{
const struct tgsi_token *tokens;
ureg_finalize(ureg);
tokens = &ureg->domain[DOMAIN_DECL].tokens[0].token;
if (nr_tokens)
*nr_tokens = ureg->domain[DOMAIN_DECL].size;
ureg->domain[DOMAIN_DECL].tokens = 0;
ureg->domain[DOMAIN_DECL].size = 0;
ureg->domain[DOMAIN_DECL].order = 0;
ureg->domain[DOMAIN_DECL].count = 0;
return tokens;
}
void *ureg_create_shader( struct ureg_program *ureg,
struct pipe_context *pipe,
const struct pipe_stream_output_info *so )
{
struct pipe_shader_state state;
state.tokens = ureg_finalize(ureg);
if(!state.tokens)
return NULL;
if (so)
state.stream_output = *so;
else
memset(&state.stream_output, 0, sizeof(state.stream_output));
if (ureg->processor == TGSI_PROCESSOR_VERTEX)
return pipe->create_vs_state( pipe, &state );
else
return pipe->create_fs_state( pipe, &state );
}
static void r300_dummy_vertex_shader(
struct r300_context* r300,
struct r300_vertex_shader* shader)
{
struct ureg_program *ureg;
struct ureg_dst dst;
struct ureg_src imm;
/* Make a simple vertex shader which outputs (0, 0, 0, 1),
* effectively rendering nothing. */
ureg = ureg_create(TGSI_PROCESSOR_VERTEX);
dst = ureg_DECL_output(ureg, TGSI_SEMANTIC_POSITION, 0);
imm = ureg_imm4f(ureg, 0, 0, 0, 1);
ureg_MOV(ureg, dst, imm);
ureg_END(ureg);
shader->state.tokens = tgsi_dup_tokens(ureg_finalize(ureg));
ureg_destroy(ureg);
shader->dummy = TRUE;
r300_init_vs_outputs(r300, shader);
r300_translate_vertex_shader(r300, shader);
}
static void r300_dummy_fragment_shader(
struct r300_context* r300,
struct r300_fragment_shader_code* shader)
{
struct pipe_shader_state state;
struct ureg_program *ureg;
struct ureg_dst out;
struct ureg_src imm;
/* Make a simple fragment shader which outputs (0, 0, 0, 1) */
ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
out = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
imm = ureg_imm4f(ureg, 0, 0, 0, 1);
ureg_MOV(ureg, out, imm);
ureg_END(ureg);
state.tokens = ureg_finalize(ureg);
shader->dummy = TRUE;
r300_translate_fragment_shader(r300, shader, state.tokens);
ureg_destroy(ureg);
}
static void *
combine_shaders(const struct shader_asm_info *shaders[SHADER_STAGES], int num_shaders,
struct pipe_context *pipe,
struct pipe_shader_state *shader)
{
VGboolean declare_input = VG_FALSE;
VGint start_const = -1, end_const = 0;
VGint start_temp = -1, end_temp = 0;
VGint start_sampler = -1, end_sampler = 0;
VGint i, current_shader = 0;
VGint num_consts, num_temps, num_samplers;
struct ureg_program *ureg;
struct ureg_src in[2];
struct ureg_src *sampler = NULL;
struct ureg_src *constant = NULL;
struct ureg_dst out, *temp = NULL;
void *p = NULL;
for (i = 0; i < num_shaders; ++i) {
if (shaders[i]->num_consts)
start_const = range_min(start_const, shaders[i]->start_const);
if (shaders[i]->num_temps)
start_temp = range_min(start_temp, shaders[i]->start_temp);
if (shaders[i]->num_samplers)
start_sampler = range_min(start_sampler, shaders[i]->start_sampler);
end_const = range_max(end_const, shaders[i]->start_const +
shaders[i]->num_consts);
end_temp = range_max(end_temp, shaders[i]->start_temp +
shaders[i]->num_temps);
end_sampler = range_max(end_sampler, shaders[i]->start_sampler +
shaders[i]->num_samplers);
if (shaders[i]->needs_position)
declare_input = VG_TRUE;
}
/* if they're still unitialized, initialize them */
if (start_const < 0)
start_const = 0;
if (start_temp < 0)
start_temp = 0;
if (start_sampler < 0)
start_sampler = 0;
num_consts = end_const - start_const;
num_temps = end_temp - start_temp;
num_samplers = end_sampler - start_sampler;
ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
if (!ureg)
return NULL;
if (declare_input) {
in[0] = ureg_DECL_fs_input(ureg,
TGSI_SEMANTIC_POSITION,
0,
TGSI_INTERPOLATE_LINEAR);
in[1] = ureg_DECL_fs_input(ureg,
TGSI_SEMANTIC_GENERIC,
0,
TGSI_INTERPOLATE_PERSPECTIVE);
}
/* we always have a color output */
out = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
if (num_consts >= 1) {
constant = (struct ureg_src *) malloc(sizeof(struct ureg_src) * end_const);
for (i = start_const; i < end_const; i++) {
constant[i] = ureg_DECL_constant(ureg, i);
}
}
if (num_temps >= 1) {
temp = (struct ureg_dst *) malloc(sizeof(struct ureg_dst) * end_temp);
for (i = start_temp; i < end_temp; i++) {
temp[i] = ureg_DECL_temporary(ureg);
}
}
if (num_samplers >= 1) {
sampler = (struct ureg_src *) malloc(sizeof(struct ureg_src) * end_sampler);
for (i = start_sampler; i < end_sampler; i++) {
sampler[i] = ureg_DECL_sampler(ureg, i);
}
}
while (current_shader < num_shaders) {
if ((current_shader + 1) == num_shaders) {
shaders[current_shader]->func(ureg,
&out,
in,
sampler,
temp,
constant);
} else {
shaders[current_shader]->func(ureg,
&temp[0],
in,
sampler,
temp,
constant);
}
current_shader++;
}
ureg_END(ureg);
shader->tokens = ureg_finalize(ureg);
if(!shader->tokens)
return NULL;
p = pipe->create_fs_state(pipe, shader);
ureg_destroy(ureg);
if (num_temps >= 1) {
for (i = start_temp; i < end_temp; i++) {
ureg_release_temporary(ureg, temp[i]);
}
}
if (temp)
free(temp);
if (constant)
free(constant);
if (sampler)
free(sampler);
return p;
}
