extern "C" int
_mesa_get_sampler_uniform_value(class ir_dereference *sampler,
struct gl_shader_program *shader_program,
const struct gl_program *prog)
{
get_sampler_name getname(sampler, shader_program);
GLuint shader = _mesa_program_enum_to_shader_stage(prog->Target);
sampler->accept(&getname);
unsigned location;
if (!shader_program->UniformHash->get(location, getname.name)) {
linker_error(shader_program,
"failed to find sampler named %s.\n", getname.name);
return 0;
}
if (!shader_program->UniformStorage[location].sampler[shader].active) {
assert(0 && "cannot return a sampler");
linker_error(shader_program,
"cannot return a sampler named %s, because it is not "
"used in this shader stage. This is a driver bug.\n",
getname.name);
return 0;
}
return shader_program->UniformStorage[location].sampler[shader].index +
getname.offset;
}
/**
* Update the vertex/fragment program's TexturesUsed array.
*
* This needs to be called after glUniform(set sampler var) is called.
* A call to glUniform(samplerVar, value) causes a sampler to point to a
* particular texture unit. We know the sampler's texture target
* (1D/2D/3D/etc) from compile time but the sampler's texture unit is
* set by glUniform() calls.
*
* So, scan the program->SamplerUnits[] and program->SamplerTargets[]
* information to update the prog->TexturesUsed[] values.
* Each value of TexturesUsed[unit] is one of zero, TEXTURE_1D_INDEX,
* TEXTURE_2D_INDEX, TEXTURE_3D_INDEX, etc.
* We'll use that info for state validation before rendering.
*/
void
_mesa_update_shader_textures_used(struct gl_shader_program *shProg,
struct gl_program *prog)
{
GLuint s;
struct gl_shader *shader =
shProg->_LinkedShaders[_mesa_program_enum_to_shader_stage(prog->Target)];
assert(shader);
memcpy(prog->SamplerUnits, shader->SamplerUnits, sizeof(prog->SamplerUnits));
memset(prog->TexturesUsed, 0, sizeof(prog->TexturesUsed));
for (s = 0; s < MAX_SAMPLERS; s++) {
if (prog->SamplersUsed & (1 << s)) {
GLuint unit = shader->SamplerUnits[s];
GLuint tgt = shader->SamplerTargets[s];
assert(unit < Elements(prog->TexturesUsed));
assert(tgt < NUM_TEXTURE_TARGETS);
prog->TexturesUsed[unit] |= (1 << tgt);
}
}
}
static unsigned
get_sampler_index(struct gl_shader_program *shader_program, const char *name,
const struct gl_program *prog)
{
GLuint shader = _mesa_program_enum_to_shader_stage(prog->Target);
unsigned location;
if (!shader_program->UniformHash->get(location, name)) {
linker_error(shader_program,
"failed to find sampler named %s.\n", name);
return 0;
}
if (!shader_program->UniformStorage[location].sampler[shader].active) {
assert(0 && "cannot return a sampler");
linker_error(shader_program,
"cannot return a sampler named %s, because it is not "
"used in this shader stage. This is a driver bug.\n",
name);
return 0;
}
return shader_program->UniformStorage[location].sampler[shader].index;
}
/**
* Called via ctx->Driver.ProgramStringNotify()
* Called when the program's text/code is changed. We have to free
* all shader variants and corresponding gallium shaders when this happens.
*/
static GLboolean
st_program_string_notify( struct gl_context *ctx,
GLenum target,
struct gl_program *prog )
{
struct st_context *st = st_context(ctx);
gl_shader_stage stage = _mesa_program_enum_to_shader_stage(target);
if (target == GL_FRAGMENT_PROGRAM_ARB) {
struct st_fragment_program *stfp = (struct st_fragment_program *) prog;
st_release_fp_variants(st, stfp);
if (!st_translate_fragment_program(st, stfp))
return false;
if (st->fp == stfp)
st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
}
else if (target == GL_GEOMETRY_PROGRAM_NV) {
struct st_geometry_program *stgp = (struct st_geometry_program *) prog;
st_release_basic_variants(st, stgp->Base.Base.Target,
&stgp->variants, &stgp->tgsi);
if (!st_translate_geometry_program(st, stgp))
return false;
if (st->gp == stgp)
st->dirty.st |= ST_NEW_GEOMETRY_PROGRAM;
}
else if (target == GL_VERTEX_PROGRAM_ARB) {
struct st_vertex_program *stvp = (struct st_vertex_program *) prog;
st_release_vp_variants(st, stvp);
if (!st_translate_vertex_program(st, stvp))
return false;
if (st->vp == stvp)
st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
}
else if (target == GL_TESS_CONTROL_PROGRAM_NV) {
struct st_tessctrl_program *sttcp =
(struct st_tessctrl_program *) prog;
st_release_basic_variants(st, sttcp->Base.Base.Target,
&sttcp->variants, &sttcp->tgsi);
if (!st_translate_tessctrl_program(st, sttcp))
return false;
if (st->tcp == sttcp)
st->dirty.st |= ST_NEW_TESSCTRL_PROGRAM;
}
else if (target == GL_TESS_EVALUATION_PROGRAM_NV) {
struct st_tesseval_program *sttep =
(struct st_tesseval_program *) prog;
st_release_basic_variants(st, sttep->Base.Base.Target,
&sttep->variants, &sttep->tgsi);
if (!st_translate_tesseval_program(st, sttep))
return false;
if (st->tep == sttep)
st->dirty.st |= ST_NEW_TESSEVAL_PROGRAM;
}
else if (target == GL_COMPUTE_PROGRAM_NV) {
struct st_compute_program *stcp =
(struct st_compute_program *) prog;
st_release_cp_variants(st, stcp);
if (!st_translate_compute_program(st, stcp))
return false;
if (st->cp == stcp)
st->dirty_cp.st |= ST_NEW_COMPUTE_PROGRAM;
}
else if (target == GL_FRAGMENT_SHADER_ATI) {
assert(prog);
struct st_fragment_program *stfp = (struct st_fragment_program *) prog;
assert(stfp->ati_fs);
assert(stfp->ati_fs->Program == prog);
st_init_atifs_prog(ctx, prog);
st_release_fp_variants(st, stfp);
if (!st_translate_fragment_program(st, stfp))
return false;
if (st->fp == stfp)
st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
}
if (ST_DEBUG & DEBUG_PRECOMPILE ||
st->shader_has_one_variant[stage])
st_precompile_shader_variant(st, prog);
return GL_TRUE;
}
