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author | marha <marha@users.sourceforge.net> | 2010-11-22 19:42:40 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2010-11-22 19:42:40 +0000 |
commit | 85ef9930f56bf15181f9a0b238f03d55303cf411 (patch) | |
tree | 63b43286956ebd1c35c96e9b3d5305aabdf71a0f /mesalib/src/mesa/shader/slang/slang_vartable.c | |
parent | 94810d19989336862251dbf69c3f3acb18a9b06d (diff) | |
download | vcxsrv-85ef9930f56bf15181f9a0b238f03d55303cf411.tar.gz vcxsrv-85ef9930f56bf15181f9a0b238f03d55303cf411.tar.bz2 vcxsrv-85ef9930f56bf15181f9a0b238f03d55303cf411.zip |
Updated to mesalib 7.9
Diffstat (limited to 'mesalib/src/mesa/shader/slang/slang_vartable.c')
-rw-r--r-- | mesalib/src/mesa/shader/slang/slang_vartable.c | 362 |
1 files changed, 0 insertions, 362 deletions
diff --git a/mesalib/src/mesa/shader/slang/slang_vartable.c b/mesalib/src/mesa/shader/slang/slang_vartable.c deleted file mode 100644 index e07e3a226..000000000 --- a/mesalib/src/mesa/shader/slang/slang_vartable.c +++ /dev/null @@ -1,362 +0,0 @@ - -#include "main/imports.h" -#include "shader/program.h" -#include "shader/prog_print.h" -#include "slang_compile.h" -#include "slang_compile_variable.h" -#include "slang_emit.h" -#include "slang_mem.h" -#include "slang_vartable.h" -#include "slang_ir.h" - - -static int dbg = 0; - - -typedef enum { - FREE, - VAR, - TEMP -} TempState; - - -/** - * Variable/register info for one variable scope. - */ -struct table -{ - int Level; - int NumVars; - slang_variable **Vars; /* array [NumVars] */ - - TempState Temps[MAX_PROGRAM_TEMPS * 4]; /* per-component state */ - int ValSize[MAX_PROGRAM_TEMPS * 4]; /**< For debug only */ - - struct table *Parent; /** Parent scope table */ -}; - - -/** - * A variable table is a stack of tables, one per scope. - */ -struct slang_var_table_ -{ - GLint CurLevel; - GLuint MaxRegisters; - struct table *Top; /**< Table at top of stack */ -}; - - - -slang_var_table * -_slang_new_var_table(GLuint maxRegisters) -{ - slang_var_table *vt - = (slang_var_table *) _slang_alloc(sizeof(slang_var_table)); - if (vt) { - vt->MaxRegisters = maxRegisters; - } - return vt; -} - - -void -_slang_delete_var_table(slang_var_table *vt) -{ - if (vt->Top) { - _mesa_problem(NULL, "non-empty var table in _slang_delete_var_table()"); - return; - } - _slang_free(vt); -} - - - -/** - * Create new table on top of vartable stack. - * Used when we enter a {} block. - */ -void -_slang_push_var_table(slang_var_table *vt) -{ - struct table *t = (struct table *) _slang_alloc(sizeof(struct table)); - if (t) { - t->Level = vt->CurLevel++; - t->Parent = vt->Top; - if (t->Parent) { - /* copy the info indicating which temp regs are in use */ - memcpy(t->Temps, t->Parent->Temps, sizeof(t->Temps)); - memcpy(t->ValSize, t->Parent->ValSize, sizeof(t->ValSize)); - } - vt->Top = t; - if (dbg) printf("Pushing level %d\n", t->Level); - } -} - - -/** - * Pop top entry from variable table. - * Used when we leave a {} block. - */ -void -_slang_pop_var_table(slang_var_table *vt) -{ - struct table *t = vt->Top; - int i; - - if (dbg) printf("Popping level %d\n", t->Level); - - /* free the storage allocated for each variable */ - for (i = 0; i < t->NumVars; i++) { - slang_ir_storage *store = t->Vars[i]->store; - GLint j; - GLuint comp; - if (dbg) printf(" Free var %s, size %d at %d.%s\n", - (char*) t->Vars[i]->a_name, store->Size, - store->Index, - _mesa_swizzle_string(store->Swizzle, 0, 0)); - - if (store->File == PROGRAM_SAMPLER) { - /* samplers have no storage */ - continue; - } - - if (store->Size == 1) - comp = GET_SWZ(store->Swizzle, 0); - else - comp = 0; - - /* store->Index may be -1 if we run out of registers */ - if (store->Index >= 0) { - for (j = 0; j < store->Size; j++) { - assert(t->Temps[store->Index * 4 + j + comp] == VAR); - t->Temps[store->Index * 4 + j + comp] = FREE; - } - } - store->Index = -1; - } - if (t->Parent) { - /* just verify that any remaining allocations in this scope - * were for temps - */ - for (i = 0; i < (int) vt->MaxRegisters * 4; i++) { - if (t->Temps[i] != FREE && t->Parent->Temps[i] == FREE) { - if (dbg) printf(" Free reg %d\n", i/4); - assert(t->Temps[i] == TEMP); - } - } - } - - if (t->Vars) { - _slang_free(t->Vars); - t->Vars = NULL; - } - - vt->Top = t->Parent; - _slang_free(t); - vt->CurLevel--; -} - - -/** - * Add a new variable to the given var/symbol table. - */ -void -_slang_add_variable(slang_var_table *vt, slang_variable *v) -{ - struct table *t; - assert(vt); - t = vt->Top; - assert(t); - if (dbg) printf("Adding var %s, store %p\n", (char *) v->a_name, (void *) v->store); - t->Vars = (slang_variable **) - _slang_realloc(t->Vars, - t->NumVars * sizeof(slang_variable *), - (t->NumVars + 1) * sizeof(slang_variable *)); - t->Vars[t->NumVars] = v; - t->NumVars++; -} - - -/** - * Look for variable by name in given table. - * If not found, Parent table will be searched. - */ -slang_variable * -_slang_find_variable(const slang_var_table *vt, slang_atom name) -{ - struct table *t = vt->Top; - while (1) { - int i; - for (i = 0; i < t->NumVars; i++) { - if (t->Vars[i]->a_name == name) - return t->Vars[i]; - } - if (t->Parent) - t = t->Parent; - else - return NULL; - } -} - - -/** - * Allocation helper. - * \param size var size in floats - * \return position for var, measured in floats - */ -static GLint -alloc_reg(slang_var_table *vt, GLint size, GLboolean isTemp) -{ - struct table *t = vt->Top; - /* if size == 1, allocate anywhere, else, pos must be multiple of 4 */ - const GLuint step = (size == 1) ? 1 : 4; - GLuint i, j; - assert(size > 0); /* number of floats */ - - for (i = 0; i <= vt->MaxRegisters * 4 - size; i += step) { - GLuint found = 0; - for (j = 0; j < (GLuint) size; j++) { - assert(i + j < 4 * MAX_PROGRAM_TEMPS); - if (i + j < vt->MaxRegisters * 4 && t->Temps[i + j] == FREE) { - found++; - } - else { - break; - } - } - if (found == size) { - /* found block of size free regs */ - if (size > 1) - assert(i % 4 == 0); - for (j = 0; j < (GLuint) size; j++) { - assert(i + j < 4 * MAX_PROGRAM_TEMPS); - t->Temps[i + j] = isTemp ? TEMP : VAR; - } - assert(i < MAX_PROGRAM_TEMPS * 4); - t->ValSize[i] = size; - return i; - } - } - - /* if we get here, we ran out of registers */ - return -1; -} - - -/** - * Allocate temp register(s) for storing a variable. - * \param size size needed, in floats - * \param swizzle returns swizzle mask for accessing var in register - * \return register allocated, or -1 - */ -GLboolean -_slang_alloc_var(slang_var_table *vt, slang_ir_storage *store) -{ - struct table *t = vt->Top; - int i; - - if (store->File == PROGRAM_SAMPLER) { - /* don't really allocate storage */ - store->Index = 0; - return GL_TRUE; - } - - i = alloc_reg(vt, store->Size, GL_FALSE); - if (i < 0) - return GL_FALSE; - - store->Index = i / 4; - store->Swizzle = _slang_var_swizzle(store->Size, i % 4); - - if (dbg) - printf("Alloc var storage sz %d at %d.%s (level %d) store %p\n", - store->Size, store->Index, - _mesa_swizzle_string(store->Swizzle, 0, 0), - t->Level, - (void*) store); - - return GL_TRUE; -} - - - -/** - * Allocate temp register(s) for storing an unnamed intermediate value. - */ -GLboolean -_slang_alloc_temp(slang_var_table *vt, slang_ir_storage *store) -{ - struct table *t = vt->Top; - const int i = alloc_reg(vt, store->Size, GL_TRUE); - if (i < 0) - return GL_FALSE; - - assert(store->Index < 0); - - store->Index = i / 4; - store->Swizzle = _slang_var_swizzle(store->Size, i % 4); - - if (dbg) printf("Alloc temp sz %d at %d.%s (level %d) store %p\n", - store->Size, store->Index, - _mesa_swizzle_string(store->Swizzle, 0, 0), t->Level, - (void *) store); - - return GL_TRUE; -} - - -void -_slang_free_temp(slang_var_table *vt, slang_ir_storage *store) -{ - struct table *t = vt->Top; - GLuint i; - GLint r = store->Index; - assert(store->Size > 0); - assert(r >= 0); - assert((GLuint)r + store->Size <= vt->MaxRegisters * 4); - if (dbg) printf("Free temp sz %d at %d.%s (level %d) store %p\n", - store->Size, r, - _mesa_swizzle_string(store->Swizzle, 0, 0), - t->Level, (void *) store); - if (store->Size == 1) { - const GLuint comp = GET_SWZ(store->Swizzle, 0); - /* we can actually fail some of these assertions because of the - * troublesome IR_SWIZZLE handling. - */ -#if 0 - assert(store->Swizzle == MAKE_SWIZZLE4(comp, comp, comp, comp)); - assert(comp < 4); - assert(t->ValSize[r * 4 + comp] == 1); -#endif - assert(t->Temps[r * 4 + comp] == TEMP); - t->Temps[r * 4 + comp] = FREE; - } - else { - /*assert(store->Swizzle == SWIZZLE_NOOP);*/ - assert(t->ValSize[r*4] == store->Size); - for (i = 0; i < (GLuint) store->Size; i++) { - assert(t->Temps[r * 4 + i] == TEMP); - t->Temps[r * 4 + i] = FREE; - } - } -} - - -GLboolean -_slang_is_temp(const slang_var_table *vt, const slang_ir_storage *store) -{ - struct table *t = vt->Top; - GLuint comp; - assert(store->Index >= 0); - assert(store->Index < (int) vt->MaxRegisters); - if (store->Swizzle == SWIZZLE_NOOP) - comp = 0; - else - comp = GET_SWZ(store->Swizzle, 0); - - if (t->Temps[store->Index * 4 + comp] == TEMP) - return GL_TRUE; - else - return GL_FALSE; -} |