diff options
Diffstat (limited to 'src/mesa/shader/slang/slang_link.c')
| -rw-r--r-- | src/mesa/shader/slang/slang_link.c | 1162 |
1 files changed, 442 insertions, 720 deletions
diff --git a/src/mesa/shader/slang/slang_link.c b/src/mesa/shader/slang/slang_link.c index 6114b7c252..a3cc2333ec 100644 --- a/src/mesa/shader/slang/slang_link.c +++ b/src/mesa/shader/slang/slang_link.c @@ -1,8 +1,8 @@ /* * Mesa 3-D graphics library - * Version: 6.6 + * Version: 6.5.3 * - * Copyright (C) 2006 Brian Paul All Rights Reserved. + * Copyright (C) 2007 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -24,850 +24,572 @@ /** * \file slang_link.c - * slang linker - * \author Michal Krol + * GLSL linker + * \author Brian Paul */ #include "imports.h" +#include "context.h" +#include "hash.h" +#include "macros.h" +#include "program.h" +#include "prog_instruction.h" +#include "prog_parameter.h" +#include "prog_print.h" +#include "prog_statevars.h" +#include "shader_api.h" #include "slang_link.h" -#include "slang_analyse.h" -#define TABLE_GROW(PTR,TYPE,N) \ - (PTR = (TYPE *) (slang_alloc_realloc (PTR, N * sizeof (TYPE), (N + 1) * sizeof (TYPE)))) -/* - * Check if a given name starts with "gl_". Globals with this prefix are - * treated differently, as they are built-in variables. - */ -static GLboolean -entry_has_gl_prefix (slang_atom name, slang_atom_pool *atoms) -{ - const GLchar *str; - - str = slang_atom_pool_id (atoms, name); - return str[0] == 'g' && str[1] == 'l' && str[2] == '_'; -} - -/* - * slang_active_variables - */ - -static GLvoid -slang_active_variables_ctr (slang_active_variables *self) -{ - self->table = NULL; - self->count = 0; -} - -static GLvoid -slang_active_variables_dtr (slang_active_variables *self) -{ - GLuint i; - - for (i = 0; i < self->count; i++) - slang_alloc_free (self->table[i].name); - slang_alloc_free (self->table); -} -/* - * Active variable queried by the application cannot be a structure. Queriable globals - * (uniforms and attributes) are decomposited into "simple" variables if they are - * "complex". - */ static GLboolean -add_simple_variable (slang_active_variables *self, slang_export_data_quant *q, const GLchar *name) +link_varying_vars(struct gl_shader_program *shProg, struct gl_program *prog) { - GLuint n; - slang_active_variable *var; - - n = self->count; - if (!TABLE_GROW(self->table, slang_active_variable, n)) - return GL_FALSE; + GLuint *map, i, firstVarying, newFile; + GLbitfield varsWritten, varsRead; - /* Initialize the new element. Increment table size only when it is fully initilized. */ - var = &self->table[n]; - var->quant = q; - var->name = slang_string_duplicate (name); - if (var->name == NULL) + map = (GLuint *) malloc(prog->Varying->NumParameters * sizeof(GLuint)); + if (!map) return GL_FALSE; - self->count++; - - return GL_TRUE; -} -static GLboolean -add_complex_variable (slang_active_variables *self, slang_export_data_quant *q, GLchar *name, - slang_atom_pool *atoms) -{ - slang_string_concat (name, slang_atom_pool_id (atoms, q->name)); - - /* If array, add only first element. */ - if (slang_export_data_quant_array (q)) - slang_string_concat (name, "[0]"); - - if (slang_export_data_quant_struct (q)) { - GLuint field_pos, fields, i; + for (i = 0; i < prog->Varying->NumParameters; i++) { + /* see if this varying is in the linked varying list */ + const struct gl_program_parameter *var + = prog->Varying->Parameters + i; - slang_string_concat (name, "."); - field_pos = slang_string_length (name); - - /* Break it down into individual fields. */ - fields = slang_export_data_quant_fields (q); - for (i = 0; i < fields; i++) { - if (!add_complex_variable (self, &q->structure[i], name, atoms)) + GLint j = _mesa_lookup_parameter_index(shProg->Varying, -1, var->Name); + if (j >= 0) { + /* already in list, check size */ + if (var->Size != shProg->Varying->Parameters[j].Size) { + /* error */ return GL_FALSE; - name[field_pos] = '\0'; + } + } + else { + /* not already in linked list */ + j = _mesa_add_varying(shProg->Varying, var->Name, var->Size); } + ASSERT(j >= 0); - return GL_TRUE; + map[i] = j; } - return add_simple_variable (self, q, name); -} - -/* - * Search a list of global variables with a given access (either attribute or uniform) - * and add it to the list of active variables. - */ -static GLboolean -gather_active_variables (slang_active_variables *self, slang_export_data_table *tbl, - slang_export_data_access access) -{ - GLuint i; - - for (i = 0; i < tbl->count; i++) { - if (tbl->entries[i].access == access) { - GLchar name[1024] = ""; - if (!add_complex_variable (self, &tbl->entries[i].quant, name, tbl->atoms)) - return GL_FALSE; - } + /* Varying variables are treated like other vertex program outputs + * (and like other fragment program inputs). The position of the + * first varying differs for vertex/fragment programs... + * Also, replace File=PROGRAM_VARYING with File=PROGRAM_INPUT/OUTPUT. + */ + if (prog->Target == GL_VERTEX_PROGRAM_ARB) { + firstVarying = VERT_RESULT_VAR0; + newFile = PROGRAM_OUTPUT; + } + else { + assert(prog->Target == GL_FRAGMENT_PROGRAM_ARB); + firstVarying = FRAG_ATTRIB_VAR0; + newFile = PROGRAM_INPUT; } - return GL_TRUE; -} - -/* - * slang_attrib_overrides - */ - -static GLvoid -slang_attrib_overrides_ctr (slang_attrib_overrides *self) -{ - self->table = NULL; - self->count = 0; -} - -static GLvoid -slang_attrib_overrides_dtr (slang_attrib_overrides *self) -{ - GLuint i; + /* keep track of which varying vars we read and write */ + varsWritten = varsRead = 0x0; - for (i = 0; i < self->count; i++) - slang_alloc_free (self->table[i].name); - slang_alloc_free (self->table); -} + /* OK, now scan the program/shader instructions looking for varying vars, + * replacing the old index with the new index. + */ + for (i = 0; i < prog->NumInstructions; i++) { + struct prog_instruction *inst = prog->Instructions + i; + GLuint j; -static slang_attrib_override * -lookup_attrib_override (slang_attrib_overrides *self, const GLchar *name) -{ - GLuint n, i; + if (inst->DstReg.File == PROGRAM_VARYING) { + inst->DstReg.File = newFile; + inst->DstReg.Index = map[ inst->DstReg.Index ] + firstVarying; + varsWritten |= (1 << inst->DstReg.Index); + } - n = self->count; - for (i = 0; i < n; i++) { - if (slang_string_compare (name, self->table[i].name) == 0) - return &self->table[i]; + for (j = 0; j < 3; j++) { + if (inst->SrcReg[j].File == PROGRAM_VARYING) { + inst->SrcReg[j].File = newFile; + inst->SrcReg[j].Index = map[ inst->SrcReg[j].Index ] + firstVarying; + varsRead |= (1 << inst->SrcReg[j].Index); + } + } + /* XXX update program OutputsWritten, InputsRead */ } - return NULL; -} -GLboolean -_slang_attrib_overrides_add (slang_attrib_overrides *self, GLuint index, const GLchar *name) -{ - slang_attrib_override *ovr; - GLuint n; - - /* Attribs can be overriden multiple times. Look-up the table and replace - * its index if it is found. */ - ovr = lookup_attrib_override (self, name); - if (ovr != NULL) { - ovr->index = index; - return GL_TRUE; + if (prog->Target == GL_VERTEX_PROGRAM_ARB) { + prog->OutputsWritten |= varsWritten; + } + else { + assert(prog->Target == GL_FRAGMENT_PROGRAM_ARB); + prog->InputsRead |= varsRead; } - n = self->count; - if (!TABLE_GROW(self->table, slang_attrib_override, n)) - return GL_FALSE; - /* Initialize the new element. Increment table size only when it is fully initilized. */ - ovr = &self->table[n]; - ovr->index = index; - ovr->name = slang_string_duplicate (name); - if (ovr->name == NULL) - return GL_FALSE; - self->count++; + free(map); return GL_TRUE; } -/* - * slang_uniform_bindings - */ -static GLvoid -slang_uniform_bindings_ctr (slang_uniform_bindings *self) +static GLboolean +is_uniform(GLuint file) { - self->table = NULL; - self->count = 0; + return (file == PROGRAM_ENV_PARAM || + file == PROGRAM_STATE_VAR || + file == PROGRAM_NAMED_PARAM || + file == PROGRAM_CONSTANT || + file == PROGRAM_SAMPLER || + file == PROGRAM_UNIFORM); } -static GLvoid -slang_uniform_bindings_dtr (slang_uniform_bindings *self) -{ - GLuint i; - - for (i = 0; i < self->count; i++) - slang_alloc_free (self->table[i].name); - slang_alloc_free (self->table); -} static GLboolean -add_simple_uniform_binding (slang_uniform_bindings *self, slang_export_data_quant *q, - const GLchar *name, GLuint index, GLuint addr) +link_uniform_vars(struct gl_shader_program *shProg, struct gl_program *prog) { - GLuint n, i; - slang_uniform_binding *bind; - - /* Uniform binding table is shared between vertex and fragment shaders. If the same uniform - * is declared both in a vertex and fragment shader, only one uniform entry is maintained. - * When add a uniform binding there can be an entry already allocated for it by the other - * shader. */ - n = self->count; - for (i = 0; i < n; i++) { - if (slang_string_compare (self->table[i].name, name) == 0) { - self->table[i].address[index] = addr; - return GL_TRUE; - } - } + GLuint *map, i; - if (!TABLE_GROW(self->table, slang_uniform_binding, n)) - return GL_FALSE; +#if 0 + printf("================ pre link uniforms ===============\n"); + _mesa_print_parameter_list(shProg->Uniforms); +#endif - /* Initialize the new element. Increment table size only when it is fully initilized. */ - bind = &self->table[n]; - bind->quant = q; - bind->name = slang_string_duplicate (name); - if (bind->name == NULL) + map = (GLuint *) malloc(prog->Parameters->NumParameters * sizeof(GLuint)); + if (!map) return GL_FALSE; - for (i = 0; i < SLANG_SHADER_MAX; i++) - bind->address[i] = ~0; - bind->address[index] = addr; - self->count++; - - return GL_TRUE; -} - -static GLboolean -add_complex_uniform_binding (slang_uniform_bindings *self, slang_export_data_quant *q, - GLchar *name, slang_atom_pool *atoms, GLuint index, GLuint addr) -{ - GLuint count, i; - - slang_string_concat (name, slang_atom_pool_id (atoms, q->name)); - count = slang_export_data_quant_elements (q); - - /* If array, add binding for every array element. */ - for (i = 0; i < count; i++) { - GLuint bracket_pos; - - bracket_pos = slang_string_length (name); - if (slang_export_data_quant_array (q)) - _mesa_sprintf (&name[slang_string_length (name)], "[%d]", i); - if (slang_export_data_quant_struct (q)) { - GLuint field_pos, fields, i; + for (i = 0; i < prog->Parameters->NumParameters; /* incr below*/) { + /* see if this uniform is in the linked uniform list */ + const struct gl_program_parameter *p = prog->Parameters->Parameters + i; + const GLfloat *pVals = prog->Parameters->ParameterValues[i]; + GLint j; + GLint size; - slang_string_concat (name, "."); - field_pos = slang_string_length (name); + /* sanity check */ + assert(is_uniform(p->Type)); - /* Break it down into individual fields. */ - fields = slang_export_data_quant_fields (q); - for (i = 0; i < fields; i++) { - if (!add_complex_uniform_binding (self, &q->structure[i], name, atoms, index, addr)) - return GL_FALSE; - - name[field_pos] = '\0'; - addr += slang_export_data_quant_size (&q->structure[i]); - } + if (p->Name) { + j = _mesa_lookup_parameter_index(shProg->Uniforms, -1, p->Name); } else { - if (!add_simple_uniform_binding (self, q, name, index, addr)) - return GL_FALSE; - - addr += slang_export_data_quant_size (q); + GLuint swizzle; + ASSERT(p->Type == PROGRAM_CONSTANT); + if (_mesa_lookup_parameter_constant(shProg->Uniforms, pVals, + p->Size, &j, &swizzle)) { + assert(j >= 0); + } + else { + j = -1; + } } - name[bracket_pos] = '\0'; - } - - return GL_TRUE; -} - -static GLboolean -gather_uniform_bindings (slang_uniform_bindings *self, slang_export_data_table *tbl, GLuint index) -{ - GLuint n, i; - - n = tbl->count; - for (i = 0; i < n; i++) { - if (tbl->entries[i].access == slang_exp_uniform) { - GLchar name[1024] = ""; - - if (!add_complex_uniform_binding (self, &tbl->entries[i].quant, name, tbl->atoms, index, - tbl->entries[i].address)) - return GL_FALSE; + if (j >= 0) { + /* already in list, check size XXX check this */ +#if 0 + assert(p->Size == shProg->Uniforms->Parameters[j].Size); +#endif } - } - - return GL_TRUE; -} - -/* - * slang_attrib_bindings - */ - -static GLvoid -slang_attrib_bindings_ctr (slang_attrib_bindings *self) -{ - GLuint i; - - self->binding_count = 0; - for (i = 0; i < MAX_VERTEX_ATTRIBS; i++) - self->slots[i].addr = ~0; -} - -static GLvoid -slang_attrib_bindings_dtr (slang_attrib_bindings *self) -{ - GLuint i; - - for (i = 0; i < self->binding_count; i++) - slang_alloc_free (self->bindings[i].name); -} - -/* - * NOTE: If conventional vertex attribute gl_Vertex is used, application cannot use - * vertex attrib index 0 for binding override. Currently this is not checked. - * Anyways, attrib index 0 is not used when not explicitly asked. - */ + else { + /* not already in linked list */ + switch (p->Type) { + case PROGRAM_ENV_PARAM: + j = _mesa_add_named_parameter(shProg->Uniforms, p->Name, pVals); + break; + case PROGRAM_CONSTANT: + j = _mesa_add_named_constant(shProg->Uniforms, p->Name, pVals, p->Size); + break; + case PROGRAM_STATE_VAR: + j = _mesa_add_state_reference(shProg->Uniforms, p->StateIndexes); + break; + case PROGRAM_UNIFORM: + j = _mesa_add_uniform(shProg->Uniforms, p->Name, p->Size); + break; + case PROGRAM_SAMPLER: + j = _mesa_add_sampler(shProg->Uniforms, p->Name); + break; + default: + abort(); + } -static GLuint -can_allocate_attrib_slots (slang_attrib_bindings *self, GLuint index, GLuint count) -{ - GLuint i; + } + ASSERT(j >= 0); + + size = p->Size; + while (size > 0) { + map[i] = j; + i++; + j++; + size -= 4; + } - for (i = 0; i < count; i++) { - if (self->slots[index + i].addr != ~0) - break; } - return i; -} -static GLuint -allocate_attrib_slots (slang_attrib_bindings *self, GLuint count) -{ - GLuint i; - - /* Start with attrib index 1. Index 0 will be used when explicitly - * asked by application binding. */ - for (i = 1; i <= MAX_VERTEX_ATTRIBS - count; i++) { - GLuint size; - - size = can_allocate_attrib_slots (self, i, count); - if (size == count) - return i; +#if 0 + printf("================ post link uniforms ===============\n"); + _mesa_print_parameter_list(shProg->Uniforms); +#endif - /* Speed-up the search a bit. */ - i += size; +#if 0 + { + GLuint i; + for (i = 0; i < prog->Parameters->NumParameters; i++) { + printf("map[%d] = %d\n", i, map[i]); + } + _mesa_print_parameter_list(shProg->Uniforms); } +#endif - return MAX_VERTEX_ATTRIBS; -} + /* OK, now scan the program/shader instructions looking for uniform vars, + * replacing the old index with the new index. + */ + for (i = 0; i < prog->NumInstructions; i++) { + struct prog_instruction *inst = prog->Instructions + i; + GLuint j; -static GLboolean -add_attrib_binding (slang_attrib_bindings *self, slang_export_data_quant *q, const GLchar *name, - GLuint addr, GLuint index_override) -{ - GLuint slot_span, slot_fill, slot_index, i; - slang_attrib_binding *bind; - - assert (slang_export_data_quant_simple (q)); - - switch (slang_export_data_quant_type (q)) { - case GL_FLOAT: - slot_span = 1; - slot_fill = 1; - break; - case GL_FLOAT_VEC2: - slot_span = 1; - slot_fill = 2; - break; - case GL_FLOAT_VEC3: - slot_span = 1; - slot_fill = 3; - break; - case GL_FLOAT_VEC4: - slot_span = 1; - slot_fill = 4; - break; - case GL_FLOAT_MAT2: - slot_span = 2; - slot_fill = 2; - break; - case GL_FLOAT_MAT3: - slot_span = 3; - slot_fill = 3; - break; - case GL_FLOAT_MAT4: - slot_span = 4; - slot_fill = 4; - break; - default: - assert (0); - } + if (is_uniform(inst->DstReg.File)) { + inst->DstReg.Index = map[ inst->DstReg.Index ]; + } - if (index_override == MAX_VERTEX_ATTRIBS) - slot_index = allocate_attrib_slots (self, slot_span); - else if (can_allocate_attrib_slots (self, index_override, slot_span) == slot_span) - slot_index = index_override; - else - slot_index = MAX_VERTEX_ATTRIBS; + for (j = 0; j < 3; j++) { + if (is_uniform(inst->SrcReg[j].File)) { + inst->SrcReg[j].Index = map[ inst->SrcReg[j].Index ]; + } + } - if (slot_index == MAX_VERTEX_ATTRIBS) { - /* TODO: info log: error: MAX_VERTEX_ATTRIBS exceeded */ - return GL_FALSE; + if (inst->Opcode == OPCODE_TEX || + inst->Opcode == OPCODE_TXB || + inst->Opcode == OPCODE_TXP) { + /* + printf("====== remap sampler from %d to %d\n", + inst->Sampler, map[ inst->Sampler ]); + */ + inst->Sampler = map[ inst->Sampler ]; + } } - /* Initialize the new element. Increment table size only when it is fully initilized. */ - bind = &self->bindings[self->binding_count]; - bind->quant = q; - bind->name = slang_string_duplicate (name); - if (bind->name == NULL) - return GL_FALSE; - bind->first_slot_index = slot_index; - self->binding_count++; - - for (i = 0; i < slot_span; i++) { - slang_attrib_slot *slot; - - slot = &self->slots[bind->first_slot_index + i]; - slot->addr = addr + i * slot_fill * 4; - slot->fill = slot_fill; - } + free(map); return GL_TRUE; } -static GLboolean -gather_attrib_bindings (slang_attrib_bindings *self, slang_export_data_table *tbl, - slang_attrib_overrides *ovr) -{ - GLuint i; - /* First pass. Gather attribs that have overriden index slots. */ - for (i = 0; i < tbl->count; i++) { - if (tbl->entries[i].access == slang_exp_attribute && - !entry_has_gl_prefix (tbl->entries[i].quant.name, tbl->atoms)) { - slang_export_data_quant *quant; - const GLchar *id; - slang_attrib_override *ao; - - quant = &tbl->entries[i].quant; - id = slang_atom_pool_id (tbl->atoms, quant->name); - ao = lookup_attrib_override (ovr, id); - if (ao != NULL) { - if (!add_attrib_binding (self, quant, id, tbl->entries[i].address, ao->index)) - return GL_FALSE; - } - } +/** + * Resolve binding of generic vertex attributes. + * For example, if the vertex shader declared "attribute vec4 foobar" we'll + * allocate a generic vertex attribute for "foobar" and plug that value into + * the vertex program instructions. + */ +static GLboolean +_slang_resolve_attributes(struct gl_shader_program *shProg, + struct gl_program *prog) +{ + GLuint i, j; + GLbitfield usedAttributes; + GLint size = 4; /* XXX fix */ + + assert(prog->Target == GL_VERTEX_PROGRAM_ARB); + + /* Build a bitmask indicating which attribute indexes have been + * explicitly bound by the user with glBindAttributeLocation(). + */ + usedAttributes = 0x0; + for (i = 0; i < shProg->Attributes->NumParameters; i++) { + GLint attr = shProg->Attributes->Parameters[i].StateIndexes[0]; + usedAttributes |= attr; } - /* Second pass. Gather attribs that have not overriden index slots. */ - for (i = 0; i < tbl->count; i++) { - if (tbl->entries[i].access == slang_exp_attribute && - !entry_has_gl_prefix (tbl->entries[i].quant.name, tbl->atoms)) { - slang_export_data_quant *quant; - const GLchar *id; - slang_attrib_override *ao; - - quant = &tbl->entries[i].quant; - id = slang_atom_pool_id (tbl->atoms, quant->name); - ao = lookup_attrib_override (ovr, id); - if (ao == NULL) { - if (!add_attrib_binding (self, quant, id, tbl->entries[i].address, ao->index)) - return GL_FALSE; + if (!shProg->Attributes) + shProg->Attributes = _mesa_new_parameter_list(); + + /* + * Scan program for generic attribute references + */ + for (i = 0; i < prog->NumInstructions; i++) { + struct prog_instruction *inst = prog->Instructions + i; + for (j = 0; j < 3; j++) { + if (inst->SrcReg[j].File == PROGRAM_INPUT && + inst->SrcReg[j].Index >= VERT_ATTRIB_GENERIC0) { + /* this is a generic attrib */ + const GLint k = inst->SrcReg[j].Index - VERT_ATTRIB_GENERIC0; + const char *name = prog->Attributes->Parameters[k].Name; + /* See if this attrib name is in the program's attribute list + * (i.e. was bound by the user). + */ + GLint index = _mesa_lookup_parameter_index(shProg->Attributes, + -1, name); + GLint attr; + if (index >= 0) { + /* found, user must have specified a binding */ + attr = shProg->Attributes->Parameters[index].StateIndexes[0]; + } + else { + /* Not found, choose our own attribute number. + * Start at 1 since generic attribute 0 always aliases + * glVertex/position. + */ + for (attr = 1; attr < MAX_VERTEX_ATTRIBS; attr++) { + if (((1 << attr) & usedAttributes) == 0) + break; + } + if (attr == MAX_VERTEX_ATTRIBS) { + /* too many! XXX record error log */ + return GL_FALSE; + } + _mesa_add_attribute(shProg->Attributes, name, size, attr); + } + + inst->SrcReg[j].Index = VERT_ATTRIB_GENERIC0 + attr; } } } - return GL_TRUE; } -/* - * slang_varying_bindings - */ -static GLvoid -slang_varying_bindings_ctr (slang_varying_bindings *self) +/** + * Scan program instructions to update the program's InputsRead and + * OutputsWritten fields. + */ +static void +_slang_update_inputs_outputs(struct gl_program *prog) { - self->binding_count = 0; - self->slot_count = 0; -} + GLuint i, j; -static GLvoid -slang_varying_bindings_dtr (slang_varying_bindings *self) -{ - GLuint i; + prog->InputsRead = 0x0; + prog->OutputsWritten = 0x0; - for (i = 0; i < self->binding_count; i++) - slang_alloc_free (self->bindings[i].name); + for (i = 0; i < prog->NumInstructions; i++) { + const struct prog_instruction *inst = prog->Instructions + i; + const GLuint numSrc = _mesa_num_inst_src_regs(inst->Opcode); + for (j = 0; j < numSrc; j++) { + if (inst->SrcReg[j].File == PROGRAM_INPUT) { + prog->InputsRead |= 1 << inst->SrcReg[j].Index; + } + } + if (inst->DstReg.File == PROGRAM_OUTPUT) { + prog->OutputsWritten |= 1 << inst->DstReg.Index; + } + } } -static GLvoid -update_varying_slots (slang_varying_slot *slots, GLuint count, GLboolean is_vert, GLuint addr, - GLuint do_offset) + +/** + * Scan a vertex program looking for instances of + * (PROGRAM_INPUT, VERT_ATTRIB_GENERIC0 + oldAttrib) and replace with + * (PROGRAM_INPUT, VERT_ATTRIB_GENERIC0 + newAttrib). + * This is used when the user calls glBindAttribLocation on an already linked + * shader program. + */ +void +_slang_remap_attribute(struct gl_program *prog, GLuint oldAttrib, GLuint newAttrib) { - GLuint i; + GLuint i, j; - for (i = 0; i < count; i++) { - if (is_vert) - slots[i].vert_addr = addr + i * 4 * do_offset; - else - slots[i].frag_addr = addr + i * 4 * do_offset; - } -} + assert(prog->Target == GL_VERTEX_PROGRAM_ARB); -static GLboolean -add_varying_binding (slang_varying_bindings *self, slang_export_data_quant *q, const GLchar *name, - GLboolean is_vert, GLuint addr) -{ - GLuint n, slot_span, i; - slang_varying_binding *bind; - - n = self->binding_count; - slot_span = slang_export_data_quant_components (q) * slang_export_data_quant_elements (q); - for (i = 0; i < n; i++) { - if (slang_string_compare (self->bindings[i].name, name) == 0) { - /* TODO: data quantities must match, or else link fails */ - update_varying_slots (&self->slots[self->bindings[i].first_slot_index], slot_span, - is_vert, addr, 1); - return GL_TRUE; + for (i = 0; i < prog->NumInstructions; i++) { + struct prog_instruction *inst = prog->Instructions + i; + for (j = 0; j < 3; j++) { + if (inst->SrcReg[j].File == PROGRAM_INPUT) { + if (inst->SrcReg[j].Index == VERT_ATTRIB_GENERIC0 + oldAttrib) { + inst->SrcReg[j].Index = VERT_ATTRIB_GENERIC0 + newAttrib; + } + } } } - if (self->slot_count + slot_span > MAX_VARYING_FLOATS) { - /* TODO: info log: error: MAX_VARYING_FLOATS exceeded */ - return GL_FALSE; - } - - /* Initialize the new element. Increment table size only when it is fully initilized. */ - bind = &self->bindings[n]; - bind->quant = q; - bind->name = slang_string_duplicate (name); - if (bind->name == NULL) - return GL_FALSE; - bind->first_slot_index = self->slot_count; - self->binding_count++; + _slang_update_inputs_outputs(prog); +} - update_varying_slots (&self->slots[bind->first_slot_index], slot_span, is_vert, addr, 1); - update_varying_slots (&self->slots[bind->first_slot_index], slot_span, !is_vert, ~0, 0); - self->slot_count += slot_span; - return GL_TRUE; -} -static GLboolean -gather_varying_bindings (slang_varying_bindings *self, slang_export_data_table *tbl, - GLboolean is_vert) +/** + * Scan program for texture instructions, lookup sampler/uniform's value + * to determine which texture unit to use. + * Also, update the program's TexturesUsed[] array. + */ +void +_slang_resolve_samplers(struct gl_shader_program *shProg, + struct gl_program *prog) { GLuint i; - for (i = 0; i < tbl->count; i++) { - if (tbl->entries[i].access == slang_exp_varying && - !entry_has_gl_prefix (tbl->entries[i].quant.name, tbl->atoms)) { - if (!add_varying_binding (self, &tbl->entries[i].quant, - slang_atom_pool_id (tbl->atoms, tbl->entries[i].quant.name), - is_vert, tbl->entries[i].address)) - return GL_FALSE; + for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++) + prog->TexturesUsed[i] = 0; + + for (i = 0; i < prog->NumInstructions; i++) { + struct prog_instruction *inst = prog->Instructions + i; + if (inst->Opcode == OPCODE_TEX || + inst->Opcode == OPCODE_TXB || + inst->Opcode == OPCODE_TXP) { + GLint sampleUnit = (GLint) shProg->Uniforms->ParameterValues[inst->Sampler][0]; + assert(sampleUnit < MAX_TEXTURE_IMAGE_UNITS); + inst->TexSrcUnit = sampleUnit; + + prog->TexturesUsed[inst->TexSrcUnit] |= (1 << inst->TexSrcTarget); } } - - return GL_TRUE; } -/* - * slang_texture_bindings - */ -GLvoid -_slang_texture_usages_ctr (slang_texture_usages *self) -{ - self->table = NULL; - self->count = 0; -} -GLvoid -_slang_texture_usages_dtr (slang_texture_usages *self) +/** cast wrapper */ +static struct gl_vertex_program * +vertex_program(struct gl_program *prog) { - slang_alloc_free (self->table); + assert(prog->Target == GL_VERTEX_PROGRAM_ARB); + return (struct gl_vertex_program *) prog; } -/* - * slang_program - */ - -GLvoid -_slang_program_ctr (slang_program *self) -{ - GLuint i; - - slang_active_variables_ctr (&self->active_uniforms); - slang_active_variables_ctr (&self->active_attribs); - slang_attrib_overrides_ctr (&self->attrib_overrides); - slang_uniform_bindings_ctr (&self->uniforms); - slang_attrib_bindings_ctr (&self->attribs); - slang_varying_bindings_ctr (&self->varyings); - _slang_texture_usages_ctr (&self->texture_usage); - for (i = 0; i < SLANG_SHADER_MAX; i++) { - GLuint j; - for (j = 0; j < SLANG_COMMON_FIXED_MAX; j++) - self->common_fixed_entries[i][j] = ~0; - for (j = 0; j < SLANG_COMMON_CODE_MAX; j++) - self->code[i][j] = ~0; - self->machines[i] = NULL; - self->assemblies[i] = NULL; - } - for (i = 0; i < SLANG_VERTEX_FIXED_MAX; i++) - self->vertex_fixed_entries[i] = ~0; - for (i = 0; i < SLANG_FRAGMENT_FIXED_MAX; i++) - self->fragment_fixed_entries[i] = ~0; -} - -GLvoid -_slang_program_dtr (slang_program *self) +/** cast wrapper */ +static struct gl_fragment_program * +fragment_program(struct gl_program *prog) { - slang_active_variables_dtr (&self->active_uniforms); - slang_active_variables_dtr (&self->active_attribs); - slang_attrib_overrides_dtr (&self->attrib_overrides); - slang_uniform_bindings_dtr (&self->uniforms); - slang_attrib_bindings_dtr (&self->attribs); - slang_varying_bindings_dtr (&self->varyings); - _slang_texture_usages_dtr (&self->texture_usage); + assert(prog->Target == GL_FRAGMENT_PROGRAM_ARB); + return (struct gl_fragment_program *) prog; } -GLvoid -_slang_program_rst (slang_program *self) -{ - GLuint i; - - slang_active_variables_dtr (&self->active_uniforms); - slang_active_variables_dtr (&self->active_attribs); - slang_uniform_bindings_dtr (&self->uniforms); - slang_attrib_bindings_dtr (&self->attribs); - slang_varying_bindings_dtr (&self->varyings); - _slang_texture_usages_dtr (&self->texture_usage); - - slang_active_variables_ctr (&self->active_uniforms); - slang_active_variables_ctr (&self->active_attribs); - slang_uniform_bindings_ctr (&self->uniforms); - slang_attrib_bindings_ctr (&self->attribs); - slang_varying_bindings_ctr (&self->varyings); - _slang_texture_usages_ctr (&self->texture_usage); - for (i = 0; i < SLANG_SHADER_MAX; i++) { - GLuint j; - - for (j = 0; j < SLANG_COMMON_FIXED_MAX; j++) - self->common_fixed_entries[i][j] = ~0; - for (j = 0; j < SLANG_COMMON_CODE_MAX; j++) - self->code[i][j] = ~0; - } - for (i = 0; i < SLANG_VERTEX_FIXED_MAX; i++) - self->vertex_fixed_entries[i] = ~0; - for (i = 0; i < SLANG_FRAGMENT_FIXED_MAX; i++) - self->fragment_fixed_entries[i] = ~0; -} -/* - * _slang_link() +/** + * Shader linker. Currently: + * + * 1. The last attached vertex shader and fragment shader are linked. + * 2. Varying vars in the two shaders are combined so their locations + * agree between the vertex and fragment stages. They're treated as + * vertex program output attribs and as fragment program input attribs. + * 3. Uniform vars (including state references, constants, etc) from the + * vertex and fragment shaders are merged into one group. Recall that + * GLSL uniforms are shared by all linked shaders. + * 4. The vertex and fragment programs are cloned and modified to update + * src/dst register references so they use the new, linked uniform/ + * varying storage locations. */ - -static GLuint -gd (slang_export_data_table *tbl, const GLchar *name) +void +_slang_link(GLcontext *ctx, + GLhandleARB programObj, + struct gl_shader_program *shProg) { - slang_atom atom; + const struct gl_vertex_program *vertProg; + const struct gl_fragment_program *fragProg; GLuint i; - atom = slang_atom_pool_atom (tbl->atoms, name); - if (atom == SLANG_ATOM_NULL) - return ~0; - - for (i = 0; i < tbl->count; i++) { - if (atom == tbl->entries[i].quant.name) - return tbl->entries[i].address; + _mesa_free_shader_program_data(ctx, shProg); + + shProg->Uniforms = _mesa_new_parameter_list(); + shProg->Varying = _mesa_new_parameter_list(); + + /** + * Find attached vertex shader, fragment shader + */ + vertProg = NULL; + fragProg = NULL; + for (i = 0; i < shProg->NumShaders; i++) { + if (shProg->Shaders[i]->Type == GL_VERTEX_SHADER) + vertProg = vertex_program(shProg->Shaders[i]->Programs[0]); + else if (shProg->Shaders[i]->Type == GL_FRAGMENT_SHADER) + fragProg = fragment_program(shProg->Shaders[i]->Programs[0]); + else + _mesa_problem(ctx, "unexpected shader target in slang_link()"); } - return ~0; -} - -static GLvoid -resolve_common_fixed (GLuint e[], slang_export_data_table *tbl) -{ - e[SLANG_COMMON_FIXED_MODELVIEWMATRIX] = gd (tbl, "gl_ModelViewMatrix"); - e[SLANG_COMMON_FIXED_PROJECTIONMATRIX] = gd (tbl, "gl_ProjectionMatrix"); - e[SLANG_COMMON_FIXED_MODELVIEWPROJECTIONMATRIX] = gd (tbl, "gl_ModelViewProjectionMatrix"); - e[SLANG_COMMON_FIXED_TEXTUREMATRIX] = gd (tbl, "gl_TextureMatrix"); - e[SLANG_COMMON_FIXED_NORMALMATRIX] = gd (tbl, "gl_NormalMatrix"); - e[SLANG_COMMON_FIXED_MODELVIEWMATRIXINVERSE] = gd (tbl, "gl_ModelViewMatrixInverse"); - e[SLANG_COMMON_FIXED_PROJECTIONMATRIXINVERSE] = gd (tbl, "gl_ProjectionMatrixInverse"); - e[SLANG_COMMON_FIXED_MODELVIEWPROJECTIONMATRIXINVERSE] = gd (tbl, "gl_ModelViewProjectionMatrixInverse"); - e[SLANG_COMMON_FIXED_TEXTUREMATRIXINVERSE] = gd (tbl, "gl_TextureMatrixInverse"); - e[SLANG_COMMON_FIXED_MODELVIEWMATRIXTRANSPOSE] = gd (tbl, "gl_ModelViewMatrixTranspose"); - e[SLANG_COMMON_FIXED_PROJECTIONMATRIXTRANSPOSE] = gd (tbl, "gl_ProjectionMatrixTranspose"); - e[SLANG_COMMON_FIXED_MODELVIEWPROJECTIONMATRIXTRANSPOSE] = gd (tbl, "gl_ModelViewProjectionMatrixTranspose"); - e[SLANG_COMMON_FIXED_TEXTUREMATRIXTRANSPOSE] = gd (tbl, "gl_TextureMatrixTranspose"); - e[SLANG_COMMON_FIXED_MODELVIEWMATRIXINVERSETRANSPOSE] = gd (tbl, "gl_ModelViewMatrixInverseTranspose"); - e[SLANG_COMMON_FIXED_PROJECTIONMATRIXINVERSETRANSPOSE] = gd (tbl, "gl_ProjectionMatrixInverseTranspose"); - e[SLANG_COMMON_FIXED_MODELVIEWPROJECTIONMATRIXINVERSETRANSPOSE] = gd (tbl, "gl_ModelViewProjectionMatrixInverseTranspose"); - e[SLANG_COMMON_FIXED_TEXTUREMATRIXINVERSETRANSPOSE] = gd (tbl, "gl_TextureMatrixInverseTranspose"); - e[SLANG_COMMON_FIXED_NORMALSCALE] = gd (tbl, "gl_NormalScale"); - e[SLANG_COMMON_FIXED_DEPTHRANGE] = gd (tbl, "gl_DepthRange"); - e[SLANG_COMMON_FIXED_CLIPPLANE] = gd (tbl, "gl_ClipPlane"); - e[SLANG_COMMON_FIXED_POINT] = gd (tbl, "gl_Point"); - e[SLANG_COMMON_FIXED_FRONTMATERIAL] = gd (tbl, "gl_FrontMaterial"); - e[SLANG_COMMON_FIXED_BACKMATERIAL] = gd (tbl, "gl_BackMaterial"); - e[SLANG_COMMON_FIXED_LIGHTSOURCE] = gd (tbl, "gl_LightSource"); - e[SLANG_COMMON_FIXED_LIGHTMODEL] = gd (tbl, "gl_LightModel"); - e[SLANG_COMMON_FIXED_FRONTLIGHTMODELPRODUCT] = gd (tbl, "gl_FrontLightModelProduct"); - e[SLANG_COMMON_FIXED_BACKLIGHTMODELPRODUCT] = gd (tbl, "gl_BackLightModelProduct"); - e[SLANG_COMMON_FIXED_FRONTLIGHTPRODUCT] = gd (tbl, "gl_FrontLightProduct"); - e[SLANG_COMMON_FIXED_BACKLIGHTPRODUCT] = gd (tbl, "gl_BackLightProduct"); - e[SLANG_COMMON_FIXED_TEXTUREENVCOLOR] = gd (tbl, "gl_TextureEnvColor"); - e[SLANG_COMMON_FIXED_EYEPLANES] = gd (tbl, "gl_EyePlaneS"); - e[SLANG_COMMON_FIXED_EYEPLANET] = gd (tbl, "gl_EyePlaneT"); - e[SLANG_COMMON_FIXED_EYEPLANER] = gd (tbl, "gl_EyePlaneR"); - e[SLANG_COMMON_FIXED_EYEPLANEQ] = gd (tbl, "gl_EyePlaneQ"); - e[SLANG_COMMON_FIXED_OBJECTPLANES] = gd (tbl, "gl_ObjectPlaneS"); - e[SLANG_COMMON_FIXED_OBJECTPLANET] = gd (tbl, "gl_ObjectPlaneT"); - e[SLANG_COMMON_FIXED_OBJECTPLANER] = gd (tbl, "gl_ObjectPlaneR"); - e[SLANG_COMMON_FIXED_OBJECTPLANEQ] = gd (tbl, "gl_ObjectPlaneQ"); - e[SLANG_COMMON_FIXED_FOG] = gd (tbl, "gl_Fog"); -} -static GLvoid -resolve_vertex_fixed (GLuint e[], slang_export_data_table *tbl) -{ - e[SLANG_VERTEX_FIXED_POSITION] = gd (tbl, "gl_Position"); - e[SLANG_VERTEX_FIXED_POINTSIZE] = gd (tbl, "gl_PointSize"); - e[SLANG_VERTEX_FIXED_CLIPVERTEX] = gd (tbl, "gl_ClipVertex"); - e[SLANG_VERTEX_FIXED_COLOR] = gd (tbl, "gl_Color"); - e[SLANG_VERTEX_FIXED_SECONDARYCOLOR] = gd (tbl, "gl_SecondaryColor"); - e[SLANG_VERTEX_FIXED_NORMAL] = gd (tbl, "gl_Normal"); - e[SLANG_VERTEX_FIXED_VERTEX] = gd (tbl, "gl_Vertex"); - e[SLANG_VERTEX_FIXED_MULTITEXCOORD0] = gd (tbl, "gl_MultiTexCoord0"); - e[SLANG_VERTEX_FIXED_MULTITEXCOORD1] = gd (tbl, "gl_MultiTexCoord1"); - e[SLANG_VERTEX_FIXED_MULTITEXCOORD2] = gd (tbl, "gl_MultiTexCoord2"); - e[SLANG_VERTEX_FIXED_MULTITEXCOORD3] = gd (tbl, "gl_MultiTexCoord3"); - e[SLANG_VERTEX_FIXED_MULTITEXCOORD4] = gd (tbl, "gl_MultiTexCoord4"); - e[SLANG_VERTEX_FIXED_MULTITEXCOORD5] = gd (tbl, "gl_MultiTexCoord5"); - e[SLANG_VERTEX_FIXED_MULTITEXCOORD6] = gd (tbl, "gl_MultiTexCoord6"); - e[SLANG_VERTEX_FIXED_MULTITEXCOORD7] = gd (tbl, "gl_MultiTexCoord7"); - e[SLANG_VERTEX_FIXED_FOGCOORD] = gd (tbl, "gl_FogCoord"); - e[SLANG_VERTEX_FIXED_FRONTCOLOR] = gd (tbl, "gl_FrontColor"); - e[SLANG_VERTEX_FIXED_BACKCOLOR] = gd (tbl, "gl_BackColor"); - e[SLANG_VERTEX_FIXED_FRONTSECONDARYCOLOR] = gd (tbl, "gl_FrontSecondaryColor"); - e[SLANG_VERTEX_FIXED_BACKSECONDARYCOLOR] = gd (tbl, "gl_BackSecondaryColor"); - e[SLANG_VERTEX_FIXED_TEXCOORD] = gd (tbl, "gl_TexCoord"); - e[SLANG_VERTEX_FIXED_FOGFRAGCOORD] = gd (tbl, "gl_FogFragCoord"); -} + /* + * Make copies of the vertex/fragment programs now since we'll be + * changing src/dst registers after merging the uniforms and varying vars. + */ + if (vertProg) { + shProg->VertexProgram + = vertex_program(_mesa_clone_program(ctx, &vertProg->Base)); + } + else { + shProg->VertexProgram = NULL; + } -static GLvoid -resolve_fragment_fixed (GLuint e[], slang_export_data_table *tbl) -{ - e[SLANG_FRAGMENT_FIXED_FRAGCOORD] = gd (tbl, "gl_FragCoord"); - e[SLANG_FRAGMENT_FIXED_FRONTFACING] = gd (tbl, "gl_FrontFacing"); - e[SLANG_FRAGMENT_FIXED_FRAGCOLOR] = gd (tbl, "gl_FragColor"); - e[SLANG_FRAGMENT_FIXED_FRAGDATA] = gd (tbl, "gl_FragData"); - e[SLANG_FRAGMENT_FIXED_FRAGDEPTH] = gd (tbl, "gl_FragDepth"); - e[SLANG_FRAGMENT_FIXED_COLOR] = gd (tbl, "gl_Color"); - e[SLANG_FRAGMENT_FIXED_SECONDARYCOLOR] = gd (tbl, "gl_SecondaryColor"); - e[SLANG_FRAGMENT_FIXED_TEXCOORD] = gd (tbl, "gl_TexCoord"); - e[SLANG_FRAGMENT_FIXED_FOGFRAGCOORD] = gd (tbl, "gl_FogFragCoord"); -} + if (fragProg) { + shProg->FragmentProgram + = fragment_program(_mesa_clone_program(ctx, &fragProg->Base)); + } + else { + shProg->FragmentProgram = NULL; + } -static GLuint -gc (slang_export_code_table *tbl, const GLchar *name) -{ - slang_atom atom; - GLuint i; + if (shProg->VertexProgram) + link_varying_vars(shProg, &shProg->VertexProgram->Base); + if (shProg->FragmentProgram) + link_varying_vars(shProg, &shProg->FragmentProgram->Base); - atom = slang_atom_pool_atom (tbl->atoms, name); - if (atom == SLANG_ATOM_NULL) - return ~0; + if (shProg->VertexProgram) + link_uniform_vars(shProg, &shProg->VertexProgram->Base); + if (shProg->FragmentProgram) + link_uniform_vars(shProg, &shProg->FragmentProgram->Base); - for (i = 0; i < tbl->count; i++) { - if (atom == tbl->entries[i].name) - return tbl->entries[i].address; + /* The vertex and fragment programs share a common set of uniforms now */ + if (shProg->VertexProgram) { + _mesa_free_parameter_list(shProg->VertexProgram->Base.Parameters); + shProg->VertexProgram->Base.Parameters = shProg->Uniforms; + } + if (shProg->FragmentProgram) { + _mesa_free_parameter_list(shProg->FragmentProgram->Base.Parameters); + shProg->FragmentProgram->Base.Parameters = shProg->Uniforms; } - return ~0; -} - -static GLvoid -resolve_common_code (GLuint code[], slang_export_code_table *tbl) -{ - code[SLANG_COMMON_CODE_MAIN] = gc (tbl, "@main"); -} - -GLboolean -_slang_link (slang_program *prog, slang_code_object **objects, GLuint count) -{ - GLuint i; - for (i = 0; i < count; i++) { - GLuint index; + if (shProg->VertexProgram) { + _slang_resolve_samplers(shProg, &shProg->VertexProgram->Base); + } + if (shProg->FragmentProgram) { + _slang_resolve_samplers(shProg, &shProg->FragmentProgram->Base); + } - if (objects[i]->unit.type == slang_unit_fragment_shader) { - index = SLANG_SHADER_FRAGMENT; - resolve_fragment_fixed (prog->fragment_fixed_entries, &objects[i]->expdata); + if (shProg->VertexProgram) { + if (!_slang_resolve_attributes(shProg, &shProg->VertexProgram->Base)) { + /*goto cleanup;*/ + _mesa_problem(ctx, "_slang_resolve_attributes() failed"); + abort(); /* XXX fix */ } - else { - index = SLANG_SHADER_VERTEX; - resolve_vertex_fixed (prog->vertex_fixed_entries, &objects[i]->expdata); - if (!gather_attrib_bindings (&prog->attribs, &objects[i]->expdata, - &prog->attrib_overrides)) - return GL_FALSE; - } - - if (!gather_active_variables (&prog->active_uniforms, &objects[i]->expdata, slang_exp_uniform)) - return GL_FALSE; - if (!gather_active_variables (&prog->active_attribs, &objects[i]->expdata, slang_exp_attribute)) - return GL_FALSE; - if (!gather_uniform_bindings (&prog->uniforms, &objects[i]->expdata, index)) - return GL_FALSE; - if (!gather_varying_bindings (&prog->varyings, &objects[i]->expdata, - index == SLANG_SHADER_VERTEX)) - return GL_FALSE; - resolve_common_fixed (prog->common_fixed_entries[index], &objects[i]->expdata); - resolve_common_code (prog->code[index], &objects[i]->expcode); - prog->machines[index] = &objects[i]->machine; - prog->assemblies[index] = &objects[i]->assembly; } - /* TODO: all varyings read by fragment shader must be written by vertex shader */ + if (shProg->VertexProgram) { + _slang_update_inputs_outputs(&shProg->VertexProgram->Base); + if (!(shProg->VertexProgram->Base.OutputsWritten & (1 << VERT_RESULT_HPOS))) { + /* the vertex program did not compute a vertex position */ + if (shProg->InfoLog) { + _mesa_free(shProg->InfoLog); + } + shProg->InfoLog + = _mesa_strdup("gl_Position was not written by vertex shader\n"); + shProg->LinkStatus = GL_FALSE; + return; + } + } + if (shProg->FragmentProgram) + _slang_update_inputs_outputs(&shProg->FragmentProgram->Base); + + if (fragProg && shProg->FragmentProgram) { +#if 1 + printf("************** original fragment program\n"); + _mesa_print_program(&fragProg->Base); + _mesa_print_program_parameters(ctx, &fragProg->Base); +#endif +#if 1 + printf("************** linked fragment prog\n"); + _mesa_print_program(&shProg->FragmentProgram->Base); + _mesa_print_program_parameters(ctx, &shProg->FragmentProgram->Base); +#endif + } - if (!_slang_analyse_texture_usage (prog)) - return GL_FALSE; + if (vertProg && shProg->VertexProgram) { +#if 1 + printf("************** original vertex program\n"); + _mesa_print_program(&vertProg->Base); + _mesa_print_program_parameters(ctx, &vertProg->Base); +#endif +#if 1 + printf("************** linked vertex prog\n"); + _mesa_print_program(&shProg->VertexProgram->Base); + _mesa_print_program_parameters(ctx, &shProg->VertexProgram->Base); +#endif + } - return GL_TRUE; + shProg->LinkStatus = (shProg->VertexProgram || shProg->FragmentProgram); } |