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-rw-r--r--src/mesa/shader/slang/library/slang_common_builtin.gc17
-rw-r--r--src/mesa/shader/slang/library/slang_common_builtin_gc.h102
-rw-r--r--src/mesa/shader/slang/slang_builtin.c299
-rw-r--r--src/mesa/shader/slang/slang_builtin.h3
-rw-r--r--src/mesa/shader/slang/slang_codegen.c24
-rw-r--r--src/mesa/shader/slang/slang_compile.c2
-rw-r--r--src/mesa/shader/slang/slang_emit.c73
-rw-r--r--src/mesa/shader/slang/slang_link.c75
8 files changed, 464 insertions, 131 deletions
diff --git a/src/mesa/shader/slang/library/slang_common_builtin.gc b/src/mesa/shader/slang/library/slang_common_builtin.gc
index a051c53eea3..230c57cea8d 100644
--- a/src/mesa/shader/slang/library/slang_common_builtin.gc
+++ b/src/mesa/shader/slang/library/slang_common_builtin.gc
@@ -1,8 +1,9 @@
/*
* Mesa 3-D graphics library
- * Version: 6.5
+ * Version: 7.3
*
* Copyright (C) 2006 Brian Paul All Rights Reserved.
+ * Copyright (C) 2008 VMware, Inc. 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"),
@@ -26,8 +27,9 @@
// From Shader Spec, ver. 1.10, rev. 59
//
-//bp: XXX these will probably go away since the value needs to be
-//determined at runtime and may vary from one GLcontext to another...
+// Note: the values assigned to these constants here aren't actually used.
+// They're set by the compiler according to the GL context limits.
+// See slang_simplify.c
const int gl_MaxLights = 8;
const int gl_MaxClipPlanes = 6;
const int gl_MaxTextureUnits = 8;
@@ -98,6 +100,9 @@ struct gl_MaterialParameters {
uniform gl_MaterialParameters gl_FrontMaterial;
uniform gl_MaterialParameters gl_BackMaterial;
+/* NOTE: the order of these fields is significant!
+ * See the definition of the lighting state vars such as STATE_SPOT_DIRECTION.
+ */
struct gl_LightSourceParameters {
vec4 ambient;
vec4 diffuse;
@@ -105,12 +110,14 @@ struct gl_LightSourceParameters {
vec4 position;
vec4 halfVector;
vec3 spotDirection;
- float spotExponent;
- float spotCutoff;
float spotCosCutoff;
+
float constantAttenuation;
float linearAttenuation;
float quadraticAttenuation;
+ float spotExponent;
+
+ float spotCutoff;
};
uniform gl_LightSourceParameters gl_LightSource[gl_MaxLights];
diff --git a/src/mesa/shader/slang/library/slang_common_builtin_gc.h b/src/mesa/shader/slang/library/slang_common_builtin_gc.h
index 46632010815..759bf247d80 100644
--- a/src/mesa/shader/slang/library/slang_common_builtin_gc.h
+++ b/src/mesa/shader/slang/library/slang_common_builtin_gc.h
@@ -66,58 +66,58 @@
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114,97,100,0,0,0,1,3,2,90,95,1,0,9,0,1,99,0,2,17,49,56,48,0,48,0,0,17,51,0,49,52,49,53,57,50,54,0,
diff --git a/src/mesa/shader/slang/slang_builtin.c b/src/mesa/shader/slang/slang_builtin.c
index db00c54b8a2..c0f4c79e136 100644
--- a/src/mesa/shader/slang/slang_builtin.c
+++ b/src/mesa/shader/slang/slang_builtin.c
@@ -1,8 +1,9 @@
/*
* Mesa 3-D graphics library
- * Version: 6.5.3
+ * Version: 7.3
*
* Copyright (C) 2005-2007 Brian Paul All Rights Reserved.
+ * Copyright (C) 2008 VMware, Inc. 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"),
@@ -39,6 +40,10 @@
#include "shader/slang/slang_builtin.h"
+/** special state token (see below) */
+#define STATE_ARRAY ((gl_state_index) 0xfffff)
+
+
/**
* Lookup GL state given a variable name, 0, 1 or 2 indexes and a field.
* Allocate room for the state in the given param list and return position
@@ -132,6 +137,8 @@ lookup_statevar(const char *var, GLint index1, GLint index2, const char *field,
}
}
else if (strcmp(var, "gl_ClipPlane") == 0) {
+ if (index1 < 0)
+ return -1;
tokens[0] = STATE_CLIPPLANE;
tokens[1] = index1;
}
@@ -196,8 +203,12 @@ lookup_statevar(const char *var, GLint index1, GLint index2, const char *field,
}
}
else if (strcmp(var, "gl_LightSource") == 0) {
+ if (!field || index1 < 0)
+ return -1;
+
tokens[0] = STATE_LIGHT;
tokens[1] = index1;
+
if (strcmp(field, "ambient") == 0) {
tokens[2] = STATE_AMBIENT;
}
@@ -272,6 +283,9 @@ lookup_statevar(const char *var, GLint index1, GLint index2, const char *field,
}
else if (strcmp(var, "gl_FrontLightProduct") == 0 ||
strcmp(var, "gl_BackLightProduct") == 0) {
+ if (index1 < 0 || !field)
+ return -1;
+
tokens[0] = STATE_LIGHTPROD;
tokens[1] = index1; /* light number */
if (strcmp(var, "gl_FrontLightProduct") == 0) {
@@ -294,45 +308,63 @@ lookup_statevar(const char *var, GLint index1, GLint index2, const char *field,
}
}
else if (strcmp(var, "gl_TextureEnvColor") == 0) {
+ if (index1 < 0)
+ return -1;
tokens[0] = STATE_TEXENV_COLOR;
tokens[1] = index1;
}
else if (strcmp(var, "gl_EyePlaneS") == 0) {
+ if (index1 < 0)
+ return -1;
tokens[0] = STATE_TEXGEN;
tokens[1] = index1; /* tex unit */
tokens[2] = STATE_TEXGEN_EYE_S;
}
else if (strcmp(var, "gl_EyePlaneT") == 0) {
+ if (index1 < 0)
+ return -1;
tokens[0] = STATE_TEXGEN;
tokens[1] = index1; /* tex unit */
tokens[2] = STATE_TEXGEN_EYE_T;
}
else if (strcmp(var, "gl_EyePlaneR") == 0) {
+ if (index1 < 0)
+ return -1;
tokens[0] = STATE_TEXGEN;
tokens[1] = index1; /* tex unit */
tokens[2] = STATE_TEXGEN_EYE_R;
}
else if (strcmp(var, "gl_EyePlaneQ") == 0) {
+ if (index1 < 0)
+ return -1;
tokens[0] = STATE_TEXGEN;
tokens[1] = index1; /* tex unit */
tokens[2] = STATE_TEXGEN_EYE_Q;
}
else if (strcmp(var, "gl_ObjectPlaneS") == 0) {
+ if (index1 < 0)
+ return -1;
tokens[0] = STATE_TEXGEN;
tokens[1] = index1; /* tex unit */
tokens[2] = STATE_TEXGEN_OBJECT_S;
}
else if (strcmp(var, "gl_ObjectPlaneT") == 0) {
+ if (index1 < 0)
+ return -1;
tokens[0] = STATE_TEXGEN;
tokens[1] = index1; /* tex unit */
tokens[2] = STATE_TEXGEN_OBJECT_T;
}
else if (strcmp(var, "gl_ObjectPlaneR") == 0) {
+ if (index1 < 0)
+ return -1;
tokens[0] = STATE_TEXGEN;
tokens[1] = index1; /* tex unit */
tokens[2] = STATE_TEXGEN_OBJECT_R;
}
else if (strcmp(var, "gl_ObjectPlaneQ") == 0) {
+ if (index1 < 0)
+ return -1;
tokens[0] = STATE_TEXGEN;
tokens[1] = index1; /* tex unit */
tokens[2] = STATE_TEXGEN_OBJECT_Q;
@@ -386,13 +418,222 @@ lookup_statevar(const char *var, GLint index1, GLint index2, const char *field,
}
+
+/**
+ * Given a variable name and datatype, emit uniform/constant buffer
+ * entries which will store that state variable.
+ * For example, if name="gl_LightSource" we'll emit 64 state variable
+ * vectors/references and return position where that data starts. This will
+ * allow run-time array indexing into the light source array.
+ *
+ * Note that this is a recursive function.
+ *
+ * \return -1 if error, else index of start of data in the program parameter list
+ */
+static GLint
+emit_statevars(const char *name, int array_len,
+ const slang_type_specifier *type,
+ gl_state_index tokens[STATE_LENGTH],
+ struct gl_program_parameter_list *paramList)
+{
+ if (type->type == SLANG_SPEC_ARRAY) {
+ GLint i, pos;
+ assert(array_len > 0);
+ if (strcmp(name, "gl_ClipPlane") == 0) {
+ tokens[0] = STATE_CLIPPLANE;
+ }
+ else if (strcmp(name, "gl_LightSource") == 0) {
+ tokens[0] = STATE_LIGHT;
+ }
+ else if (strcmp(name, "gl_FrontLightProduct") == 0) {
+ tokens[0] = STATE_LIGHTPROD;
+ tokens[2] = 0; /* front */
+ }
+ else if (strcmp(name, "gl_BackLightProduct") == 0) {
+ tokens[0] = STATE_LIGHTPROD;
+ tokens[2] = 1; /* back */
+ }
+ else if (strcmp(name, "gl_TextureEnvColor") == 0) {
+ tokens[0] = STATE_TEXENV_COLOR;
+ }
+ else if (strcmp(name, "gl_EyePlaneS") == 0) {
+ tokens[0] = STATE_TEXGEN_EYE_S;
+ }
+ else if (strcmp(name, "gl_EyePlaneT") == 0) {
+ tokens[0] = STATE_TEXGEN_EYE_T;
+ }
+ else if (strcmp(name, "gl_EyePlaneR") == 0) {
+ tokens[0] = STATE_TEXGEN_EYE_R;
+ }
+ else if (strcmp(name, "gl_EyePlaneQ") == 0) {
+ tokens[0] = STATE_TEXGEN_EYE_Q;
+ }
+ else if (strcmp(name, "gl_ObjectPlaneS") == 0) {
+ tokens[0] = STATE_TEXGEN_OBJECT_S;
+ }
+ else if (strcmp(name, "gl_ObjectPlaneT") == 0) {
+ tokens[0] = STATE_TEXGEN_OBJECT_T;
+ }
+ else if (strcmp(name, "gl_ObjectPlaneR") == 0) {
+ tokens[0] = STATE_TEXGEN_OBJECT_R;
+ }
+ else if (strcmp(name, "gl_ObjectPlaneQ") == 0) {
+ tokens[0] = STATE_TEXGEN_OBJECT_Q;
+ }
+ else {
+ return -1; /* invalid array name */
+ }
+ for (i = 0; i < array_len; i++) {
+ GLint p;
+ tokens[1] = i;
+ p = emit_statevars(NULL, 0, type->_array, tokens, paramList);
+ if (i == 0)
+ pos = p;
+ }
+ return pos;
+ }
+ else if (type->type == SLANG_SPEC_STRUCT) {
+ const slang_variable_scope *fields = type->_struct->fields;
+ GLuint i, pos;
+ for (i = 0; i < fields->num_variables; i++) {
+ const slang_variable *var = fields->variables[i];
+ GLint p = emit_statevars(var->a_name, 0, &var->type.specifier,
+ tokens, paramList);
+ if (i == 0)
+ pos = p;
+ }
+ return pos;
+ }
+ else {
+ GLint pos;
+ assert(type->type == SLANG_SPEC_VEC4 ||
+ type->type == SLANG_SPEC_VEC3 ||
+ type->type == SLANG_SPEC_VEC2 ||
+ type->type == SLANG_SPEC_FLOAT ||
+ type->type == SLANG_SPEC_IVEC4 ||
+ type->type == SLANG_SPEC_IVEC3 ||
+ type->type == SLANG_SPEC_IVEC2 ||
+ type->type == SLANG_SPEC_INT);
+ if (name) {
+ GLint t;
+
+ if (tokens[0] == STATE_LIGHT)
+ t = 2;
+ else if (tokens[0] == STATE_LIGHTPROD)
+ t = 3;
+ else
+ return -1; /* invalid array name */
+
+ if (strcmp(name, "ambient") == 0) {
+ tokens[t] = STATE_AMBIENT;
+ }
+ else if (strcmp(name, "diffuse") == 0) {
+ tokens[t] = STATE_DIFFUSE;
+ }
+ else if (strcmp(name, "specular") == 0) {
+ tokens[t] = STATE_SPECULAR;
+ }
+ else if (strcmp(name, "position") == 0) {
+ tokens[t] = STATE_POSITION;
+ }
+ else if (strcmp(name, "halfVector") == 0) {
+ tokens[t] = STATE_HALF_VECTOR;
+ }
+ else if (strcmp(name, "spotDirection") == 0) {
+ tokens[t] = STATE_SPOT_DIRECTION; /* xyz components */
+ }
+ else if (strcmp(name, "spotCosCutoff") == 0) {
+ tokens[t] = STATE_SPOT_DIRECTION; /* w component */
+ }
+
+ else if (strcmp(name, "constantAttenuation") == 0) {
+ tokens[t] = STATE_ATTENUATION; /* x component */
+ }
+ else if (strcmp(name, "linearAttenuation") == 0) {
+ tokens[t] = STATE_ATTENUATION; /* y component */
+ }
+ else if (strcmp(name, "quadraticAttenuation") == 0) {
+ tokens[t] = STATE_ATTENUATION; /* z component */
+ }
+ else if (strcmp(name, "spotExponent") == 0) {
+ tokens[t] = STATE_ATTENUATION; /* w = spot exponent */
+ }
+
+ else if (strcmp(name, "spotCutoff") == 0) {
+ tokens[t] = STATE_SPOT_CUTOFF; /* x component */
+ }
+
+ else {
+ return -1; /* invalid field name */
+ }
+ }
+
+ pos = _mesa_add_state_reference(paramList, tokens);
+ return pos;
+ }
+
+ return 1;
+}
+
+
+/**
+ * Unroll the named built-in uniform variable into a sequence of state
+ * vars in the given parameter list.
+ */
+static GLint
+alloc_state_var_array(const slang_variable *var,
+ struct gl_program_parameter_list *paramList)
+{
+ gl_state_index tokens[STATE_LENGTH];
+ GLuint i;
+ GLint pos;
+
+ /* Initialize the state tokens array. This is very important.
+ * When we call _mesa_add_state_reference() it'll searches the parameter
+ * list to see if the given statevar token sequence is already present.
+ * This is normally a good thing since it prevents redundant values in the
+ * constant buffer.
+ *
+ * But when we're building arrays of state this can be bad. For example,
+ * consider this fragment of GLSL code:
+ * foo = gl_LightSource[3].diffuse;
+ * ...
+ * bar = gl_LightSource[i].diffuse;
+ *
+ * When we unroll the gl_LightSource array (for "bar") we want to re-emit
+ * gl_LightSource[3].diffuse and not re-use the first instance (from "foo")
+ * since that would upset the array layout. We handle this situation by
+ * setting the last token in the state var token array to the special
+ * value STATE_ARRAY.
+ * This token will only be set for array state. We can hijack the last
+ * element in the array for this since it's never used for light, clipplane
+ * or texture env array state.
+ */
+ for (i = 0; i < STATE_LENGTH; i++)
+ tokens[i] = 0;
+ tokens[STATE_LENGTH - 1] = STATE_ARRAY;
+
+ pos = emit_statevars(var->a_name, var->array_len, &var->type.specifier,
+ tokens, paramList);
+
+ return pos;
+}
+
+
+
/**
* Allocate storage for a pre-defined uniform (a GL state variable).
* As a memory-saving optimization, we try to only allocate storage for
* state vars that are actually used.
- * For example, the "gl_LightSource" uniform is huge. If we only use
- * a handful of gl_LightSource fields, we don't want to allocate storage
- * for all of gl_LightSource.
+ *
+ * Arrays such as gl_LightSource are handled specially. For an expression
+ * like "gl_LightSource[2].diffuse", we can allocate a single uniform/constant
+ * slot and return the index. In this case, we return direct=TRUE.
+ *
+ * Buf for something like "gl_LightSource[i].diffuse" we don't know the value
+ * of 'i' at compile time so we need to "unroll" the gl_LightSource array
+ * into a consecutive sequence of uniform/constant slots so it can be indexed
+ * at runtime. In this case, we return direct=FALSE.
*
* Currently, all pre-defined uniforms are in one of these forms:
* var
@@ -401,52 +642,62 @@ lookup_statevar(const char *var, GLint index1, GLint index2, const char *field,
* var[i].field
* var[i][j]
*
- * \return -1 upon error, else position in paramList of the state var/data
+ * \return -1 upon error, else position in paramList of the state variable/data
*/
GLint
_slang_alloc_statevar(slang_ir_node *n,
- struct gl_program_parameter_list *paramList)
+ struct gl_program_parameter_list *paramList,
+ GLboolean *direct)
{
slang_ir_node *n0 = n;
- const char *field = NULL, *var;
- GLint index1 = -1, index2 = -1, pos;
+ const char *field = NULL;
+ GLint index1 = -1, index2 = -1;
GLuint swizzle;
+ *direct = GL_TRUE;
+
if (n->Opcode == IR_FIELD) {
field = n->Field;
n = n->Children[0];
}
if (n->Opcode == IR_ELEMENT) {
- /* XXX can only handle constant indexes for now */
if (n->Children[1]->Opcode == IR_FLOAT) {
index1 = (GLint) n->Children[1]->Value[0];
- n = n->Children[0];
}
else {
- return -1;
+ *direct = GL_FALSE;
}
+ n = n->Children[0];
}
if (n->Opcode == IR_ELEMENT) {
/* XXX can only handle constant indexes for now */
- assert(n->Children[1]->Opcode == IR_FLOAT);
- index2 = (GLint) n->Children[1]->Value[0];
+ if (n->Children[1]->Opcode == IR_FLOAT) {
+ index2 = (GLint) n->Children[1]->Value[0];
+ }
+ else {
+ *direct = GL_FALSE;
+ }
n = n->Children[0];
}
assert(n->Opcode == IR_VAR);
- var = (char *) n->Var->a_name;
- pos = lookup_statevar(var, index1, index2, field, &swizzle, paramList);
- assert(pos >= 0);
- if (pos >= 0) {
- /* newly resolved storage for the statevar/constant/uniform */
- n0->Store->File = PROGRAM_STATE_VAR;
- n0->Store->Index = pos;
- n0->Store->Swizzle = swizzle;
- n0->Store->Parent = NULL;
+ if (*direct) {
+ const char *var = (const char *) n->Var->a_name;
+ GLint pos =
+ lookup_statevar(var, index1, index2, field, &swizzle, paramList);
+ if (pos >= 0) {
+ /* newly resolved storage for the statevar/constant/uniform */
+ n0->Store->File = PROGRAM_STATE_VAR;
+ n0->Store->Index = pos;
+ n0->Store->Swizzle = swizzle;
+ n0->Store->Parent = NULL;
+ return pos;
+ }
}
- return pos;
-}
+ *direct = GL_FALSE;
+ return alloc_state_var_array(n->Var, paramList);
+}
diff --git a/src/mesa/shader/slang/slang_builtin.h b/src/mesa/shader/slang/slang_builtin.h
index 58629f4f7fe..7f6fe80fcca 100644
--- a/src/mesa/shader/slang/slang_builtin.h
+++ b/src/mesa/shader/slang/slang_builtin.h
@@ -33,7 +33,8 @@
extern GLint
_slang_alloc_statevar(slang_ir_node *n,
- struct gl_program_parameter_list *paramList);
+ struct gl_program_parameter_list *paramList,
+ GLboolean *direct);
#endif /* SLANG_BUILTIN_H */
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index 7d764cb5c1d..66615d3afd6 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -391,7 +391,7 @@ _slang_input_index(const char *name, GLenum target, GLuint *swizzleOut)
const struct input_info *inputs
= (target == GL_VERTEX_PROGRAM_ARB) ? vertInputs : fragInputs;
- ASSERT(MAX_TEXTURE_UNITS == 8); /* if this fails, fix vertInputs above */
+ ASSERT(MAX_TEXTURE_COORD_UNITS == 8); /* if this fails, fix vertInputs above */
for (i = 0; inputs[i].Name; i++) {
if (strcmp(inputs[i].Name, name) == 0) {
@@ -1976,7 +1976,7 @@ _slang_make_array_constructor(slang_assemble_ctx *A, slang_operation *oper)
*/
slang_variable *p = slang_variable_scope_grow(fun->parameters);
char name[10];
- snprintf(name, sizeof(name), "p%d", i);
+ _mesa_snprintf(name, sizeof(name), "p%d", i);
p->a_name = slang_atom_pool_atom(A->atoms, name);
p->type.qualifier = SLANG_QUAL_CONST;
p->type.specifier.type = baseType;
@@ -3323,6 +3323,22 @@ is_store_writable(const slang_assemble_ctx *A, const slang_ir_storage *store)
/**
+ * Walk up an IR storage path to compute the final swizzle.
+ * This is used when we find an expression such as "foo.xz.yx".
+ */
+static GLuint
+root_swizzle(const slang_ir_storage *st)
+{
+ GLuint swizzle = st->Swizzle;
+ while (st->Parent) {
+ st = st->Parent;
+ swizzle = _slang_swizzle_swizzle(st->Swizzle, swizzle);
+ }
+ return swizzle;
+}
+
+
+/**
* Generate IR tree for an assignment (=).
*/
static slang_ir_node *
@@ -3397,9 +3413,9 @@ _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper)
rhs = _slang_gen_operation(A, &oper->children[1]);
if (lhs && rhs) {
/* convert lhs swizzle into writemask */
+ const GLuint swizzle = root_swizzle(lhs->Store);
GLuint writemask, newSwizzle;
- if (!swizzle_to_writemask(A, lhs->Store->Swizzle,
- &writemask, &newSwizzle)) {
+ if (!swizzle_to_writemask(A, swizzle, &writemask, &newSwizzle)) {
/* Non-simple writemask, need to swizzle right hand side in
* order to put components into the right place.
*/
diff --git a/src/mesa/shader/slang/slang_compile.c b/src/mesa/shader/slang/slang_compile.c
index d8aefd64950..b8044b10600 100644
--- a/src/mesa/shader/slang/slang_compile.c
+++ b/src/mesa/shader/slang/slang_compile.c
@@ -1470,9 +1470,9 @@ parse_expression(slang_parse_ctx * C, slang_output_ctx * O,
RETURN0;
}
else {
+ slang_operation array_size;
array_constructor = GL_TRUE;
/* parse the array constructor size */
- slang_operation array_size;
slang_operation_construct(&array_size);
if (!parse_expression(C, O, &array_size)) {
slang_operation_destruct(&array_size);
diff --git a/src/mesa/shader/slang/slang_emit.c b/src/mesa/shader/slang/slang_emit.c
index 6587f9cf276..d3b4e64b78d 100644
--- a/src/mesa/shader/slang/slang_emit.c
+++ b/src/mesa/shader/slang/slang_emit.c
@@ -310,24 +310,22 @@ storage_to_dst_reg(struct prog_dst_register *dst, const slang_ir_storage *st)
dst->WriteMask = swizzle_to_writemask(swizzle);
}
else {
- GLuint writemask;
switch (size) {
case 1:
- writemask = WRITEMASK_X << GET_SWZ(st->Swizzle, 0);
+ dst->WriteMask = WRITEMASK_X << GET_SWZ(st->Swizzle, 0);
break;
case 2:
- writemask = WRITEMASK_XY;
+ dst->WriteMask = WRITEMASK_XY;
break;
case 3:
- writemask = WRITEMASK_XYZ;
+ dst->WriteMask = WRITEMASK_XYZ;
break;
case 4:
- writemask = WRITEMASK_XYZW;
+ dst->WriteMask = WRITEMASK_XYZW;
break;
default:
; /* error would have been caught above */
}
- dst->WriteMask = writemask;
}
dst->RelAddr = relAddr;
@@ -348,6 +346,10 @@ storage_to_src_reg(struct prog_src_register *src, const slang_ir_storage *st)
assert(index >= 0);
while (st->Parent) {
st = st->Parent;
+ if (st->Index < 0) {
+ /* an error should have been reported already */
+ return;
+ }
assert(st->Index >= 0);
index += st->Index;
swizzle = _slang_swizzle_swizzle(fix_swizzle(st->Swizzle), swizzle);
@@ -1286,6 +1288,7 @@ emit_tex(slang_emit_info *emitInfo, slang_ir_node *n)
/* Child[0] is the sampler (a uniform which'll indicate the texture unit) */
assert(n->Children[0]->Store);
+ assert(n->Children[0]->Store->File == PROGRAM_SAMPLER);
/* Store->Index is the sampler index */
assert(n->Children[0]->Store->Index >= 0);
/* Store->Size is the texture target */
@@ -1295,6 +1298,10 @@ emit_tex(slang_emit_info *emitInfo, slang_ir_node *n)
inst->TexSrcTarget = n->Children[0]->Store->Size;
inst->TexSrcUnit = n->Children[0]->Store->Index; /* i.e. uniform's index */
+ /* mark the sampler as being used */
+ _mesa_use_uniform(emitInfo->prog->Parameters,
+ (char *) n->Children[0]->Var->a_name);
+
return inst;
}
@@ -1841,9 +1848,17 @@ emit_array_element(slang_emit_info *emitInfo, slang_ir_node *n)
root = root->Parent;
if (root->File == PROGRAM_STATE_VAR) {
- GLint index = _slang_alloc_statevar(n, emitInfo->prog->Parameters);
- assert(n->Store->Index == index);
- return NULL;
+ GLboolean direct;
+ GLint index =
+ _slang_alloc_statevar(n, emitInfo->prog->Parameters, &direct);
+ if (index < 0) {
+ /* error */
+ return NULL;
+ }
+ if (direct) {
+ n->Store->Index = index;
+ return NULL; /* all done */
+ }
}
}
@@ -1967,28 +1982,30 @@ emit_struct_field(slang_emit_info *emitInfo, slang_ir_node *n)
* space for the ones that we actually use!
*/
if (root->File == PROGRAM_STATE_VAR) {
- root->Index = _slang_alloc_statevar(n, emitInfo->prog->Parameters);
- if (root->Index < 0) {
+ GLboolean direct;
+ GLint index = _slang_alloc_statevar(n, emitInfo->prog->Parameters, &direct);
+ if (index < 0) {
slang_info_log_error(emitInfo->log, "Error parsing state variable");
return NULL;
}
- return NULL;
- }
- else {
- /* do codegen for struct */
- emit(emitInfo, n->Children[0]);
- assert(n->Children[0]->Store->Index >= 0);
+ if (direct) {
+ root->Index = index;
+ return NULL; /* all done */
+ }
}
+ /* do codegen for struct */
+ emit(emitInfo, n->Children[0]);
+ assert(n->Children[0]->Store->Index >= 0);
+
+
fieldOffset = n->Store->Index;
fieldSize = n->Store->Size;
_slang_copy_ir_storage(n->Store, n->Children[0]->Store);
n->Store->Index = n->Children[0]->Store->Index + fieldOffset / 4;
- /* XXX test this:
- n->Store->Index += fieldOffset / 4;
- */
+ n->Store->Size = fieldSize;
switch (fieldSize) {
case 1:
@@ -2077,9 +2094,21 @@ emit_var_ref(slang_emit_info *emitInfo, slang_ir_node *n)
assert(n->Store->File != PROGRAM_UNDEFINED);
if (n->Store->File == PROGRAM_STATE_VAR && n->Store->Index < 0) {
- n->Store->Index = _slang_alloc_statevar(n, emitInfo->prog->Parameters);
+ GLboolean direct;
+ GLint index = _slang_alloc_statevar(n, emitInfo->prog->Parameters, &direct);
+ if (index < 0) {
+ /* error */
+ char s[100];
+ _mesa_snprintf(s, sizeof(s), "Undefined variable '%s'",
+ (char *) n->Var->a_name);
+ slang_info_log_error(emitInfo->log, s);
+ return NULL;
+ }
+
+ n->Store->Index = index;
}
- else if (n->Store->File == PROGRAM_UNIFORM) {
+ else if (n->Store->File == PROGRAM_UNIFORM ||
+ n->Store->File == PROGRAM_SAMPLER) {
/* mark var as used */
_mesa_use_uniform(emitInfo->prog->Parameters, (char *) n->Var->a_name);
}
diff --git a/src/mesa/shader/slang/slang_link.c b/src/mesa/shader/slang/slang_link.c
index 3e97c8672b6..3f953d86e74 100644
--- a/src/mesa/shader/slang/slang_link.c
+++ b/src/mesa/shader/slang/slang_link.c
@@ -1,8 +1,9 @@
/*
* Mesa 3-D graphics library
- * Version: 7.2
+ * Version: 7.3
*
* Copyright (C) 2008 Brian Paul All Rights Reserved.
+ * Copyright (C) 2009 VMware, Inc. 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"),
@@ -136,15 +137,15 @@ link_varying_vars(struct gl_shader_program *shProg, struct gl_program *prog)
}
if (!bits_agree(var->Flags, v->Flags, PROG_PARAM_BIT_CENTROID)) {
char msg[100];
- snprintf(msg, sizeof(msg),
- "centroid modifier mismatch for '%s'", var->Name);
+ _mesa_snprintf(msg, sizeof(msg),
+ "centroid modifier mismatch for '%s'", var->Name);
link_error(shProg, msg);
return GL_FALSE;
}
if (!bits_agree(var->Flags, v->Flags, PROG_PARAM_BIT_INVARIANT)) {
char msg[100];
- snprintf(msg, sizeof(msg),
- "invariant modifier mismatch for '%s'", var->Name);
+ _mesa_snprintf(msg, sizeof(msg),
+ "invariant modifier mismatch for '%s'", var->Name);
link_error(shProg, msg);
return GL_FALSE;
}
@@ -206,13 +207,27 @@ link_varying_vars(struct gl_shader_program *shProg, struct gl_program *prog)
* Build the shProg->Uniforms list.
* This is basically a list/index of all uniforms found in either/both of
* the vertex and fragment shaders.
+ *
+ * About uniforms:
+ * Each uniform has two indexes, one that points into the vertex
+ * program's parameter array and another that points into the fragment
+ * program's parameter array. When the user changes a uniform's value
+ * we have to change the value in the vertex and/or fragment program's
+ * parameter array.
+ *
+ * This function will be called twice to set up the two uniform->parameter
+ * mappings.
+ *
+ * If a uniform is only present in the vertex program OR fragment program
+ * then the fragment/vertex parameter index, respectively, will be -1.
*/
static GLboolean
-link_uniform_vars(struct gl_shader_program *shProg,
+link_uniform_vars(GLcontext *ctx,
+ struct gl_shader_program *shProg,
struct gl_program *prog,
GLuint *numSamplers)
{
- GLuint samplerMap[MAX_SAMPLERS];
+ GLuint samplerMap[200]; /* max number of samplers declared, not used */
GLuint i;
for (i = 0; i < prog->Parameters->NumParameters; i++) {
@@ -227,30 +242,41 @@ link_uniform_vars(struct gl_shader_program *shProg,
* Furthermore, we'll need to fix the state-var's size/datatype info.
*/
- if ((p->Type == PROGRAM_UNIFORM && p->Used) ||
- p->Type == PROGRAM_SAMPLER) {
+ if ((p->Type == PROGRAM_UNIFORM || p->Type == PROGRAM_SAMPLER)
+ && p->Used) {
+ /* add this uniform, indexing into the target's Parameters list */
struct gl_uniform *uniform =
_mesa_append_uniform(shProg->Uniforms, p->Name, prog->Target, i);
if (uniform)
uniform->Initialized = p->Initialized;
}
- if (p->Type == PROGRAM_SAMPLER) {
+ /* The samplerMap[] table we build here is used to remap/re-index
+ * sampler references by TEX instructions.
+ */
+ if (p->Type == PROGRAM_SAMPLER && p->Used) {
/* Allocate a new sampler index */
- GLuint sampNum = *numSamplers;
GLuint oldSampNum = (GLuint) prog->Parameters->ParameterValues[i][0];
- if (oldSampNum >= MAX_SAMPLERS) {
- link_error(shProg, "Too many texture samplers");
+ GLuint newSampNum = *numSamplers;
+ if (newSampNum >= ctx->Const.MaxTextureImageUnits) {
+ char s[100];
+ sprintf(s, "Too many texture samplers (%u, max is %u)",
+ newSampNum, ctx->Const.MaxTextureImageUnits);
+ link_error(shProg, s);
return GL_FALSE;
}
- samplerMap[oldSampNum] = sampNum;
+ /* save old->new mapping in the table */
+ if (oldSampNum < Elements(samplerMap))
+ samplerMap[oldSampNum] = newSampNum;
+ /* update parameter's sampler index */
+ prog->Parameters->ParameterValues[i][0] = (GLfloat) newSampNum;
(*numSamplers)++;
}
}
-
- /* OK, now scan the program/shader instructions looking for sampler vars,
- * replacing the old index with the new index.
+ /* OK, now scan the program/shader instructions looking for texture
+ * instructions using sampler vars. Replace old sampler indexes with
+ * new ones.
*/
prog->SamplersUsed = 0x0;
for (i = 0; i < prog->NumInstructions; i++) {
@@ -261,10 +287,13 @@ link_uniform_vars(struct gl_shader_program *shProg,
inst->Sampler, map[ inst->Sampler ]);
*/
/* here, texUnit is really samplerUnit */
- assert(inst->TexSrcUnit < MAX_SAMPLERS);
- inst->TexSrcUnit = samplerMap[inst->TexSrcUnit];
- prog->SamplerTargets[inst->TexSrcUnit] = inst->TexSrcTarget;
- prog->SamplersUsed |= (1 << inst->TexSrcUnit);
+ const GLint oldSampNum = inst->TexSrcUnit;
+ if (oldSampNum < Elements(samplerMap)) {
+ const GLuint newSampNum = samplerMap[oldSampNum];
+ inst->TexSrcUnit = newSampNum;
+ prog->SamplerTargets[newSampNum] = inst->TexSrcTarget;
+ prog->SamplersUsed |= (1 << newSampNum);
+ }
}
}
@@ -564,13 +593,13 @@ _slang_link(GLcontext *ctx,
/* link uniform vars */
if (shProg->VertexProgram) {
- if (!link_uniform_vars(shProg, &shProg->VertexProgram->Base,
+ if (!link_uniform_vars(ctx, shProg, &shProg->VertexProgram->Base,
&numSamplers)) {
return;
}
}
if (shProg->FragmentProgram) {
- if (!link_uniform_vars(shProg, &shProg->FragmentProgram->Base,
+ if (!link_uniform_vars(ctx, shProg, &shProg->FragmentProgram->Base,
&numSamplers)) {
return;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 07:45:51 +0000