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Diffstat (limited to 'src/mesa/slang/slang_builtin.c')
| -rw-r--r-- | src/mesa/slang/slang_builtin.c | 1020 |
1 files changed, 0 insertions, 1020 deletions
diff --git a/src/mesa/slang/slang_builtin.c b/src/mesa/slang/slang_builtin.c deleted file mode 100644 index 179571fab4..0000000000 --- a/src/mesa/slang/slang_builtin.c +++ /dev/null @@ -1,1020 +0,0 @@ -/* - * Mesa 3-D graphics library - * 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"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -/** - * \file slang_builtin.c - * Resolve built-in uniform vars. - * \author Brian Paul - */ - -#include "main/imports.h" -#include "main/mtypes.h" -#include "program/program.h" -#include "program/prog_instruction.h" -#include "program/prog_parameter.h" -#include "program/prog_statevars.h" -#include "slang/slang_builtin.h" -#include "slang/slang_compile_struct.h" -#include "slang/slang_ir.h" -#include "slang/slang_typeinfo.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 - * in the list. - * Yes, this is kind of ugly, but it works. - */ -static GLint -lookup_statevar(const char *var, GLint index1, GLint index2, const char *field, - GLuint *swizzleOut, - struct gl_program_parameter_list *paramList) -{ - /* - * NOTE: The ARB_vertex_program extension specified that matrices get - * loaded in registers in row-major order. With GLSL, we want column- - * major order. So, we need to transpose all matrices here... - */ - static const struct { - const char *name; - gl_state_index matrix; - gl_state_index modifier; - } matrices[] = { - { "gl_ModelViewMatrix", STATE_MODELVIEW_MATRIX, STATE_MATRIX_TRANSPOSE }, - { "gl_ModelViewMatrixInverse", STATE_MODELVIEW_MATRIX, STATE_MATRIX_INVTRANS }, - { "gl_ModelViewMatrixTranspose", STATE_MODELVIEW_MATRIX, 0 }, - { "gl_ModelViewMatrixInverseTranspose", STATE_MODELVIEW_MATRIX, STATE_MATRIX_INVERSE }, - - { "gl_ProjectionMatrix", STATE_PROJECTION_MATRIX, STATE_MATRIX_TRANSPOSE }, - { "gl_ProjectionMatrixInverse", STATE_PROJECTION_MATRIX, STATE_MATRIX_INVTRANS }, - { "gl_ProjectionMatrixTranspose", STATE_PROJECTION_MATRIX, 0 }, - { "gl_ProjectionMatrixInverseTranspose", STATE_PROJECTION_MATRIX, STATE_MATRIX_INVERSE }, - - { "gl_ModelViewProjectionMatrix", STATE_MVP_MATRIX, STATE_MATRIX_TRANSPOSE }, - { "gl_ModelViewProjectionMatrixInverse", STATE_MVP_MATRIX, STATE_MATRIX_INVTRANS }, - { "gl_ModelViewProjectionMatrixTranspose", STATE_MVP_MATRIX, 0 }, - { "gl_ModelViewProjectionMatrixInverseTranspose", STATE_MVP_MATRIX, STATE_MATRIX_INVERSE }, - - { "gl_TextureMatrix", STATE_TEXTURE_MATRIX, STATE_MATRIX_TRANSPOSE }, - { "gl_TextureMatrixInverse", STATE_TEXTURE_MATRIX, STATE_MATRIX_INVTRANS }, - { "gl_TextureMatrixTranspose", STATE_TEXTURE_MATRIX, 0 }, - { "gl_TextureMatrixInverseTranspose", STATE_TEXTURE_MATRIX, STATE_MATRIX_INVERSE }, - - { "gl_NormalMatrix", STATE_MODELVIEW_MATRIX, STATE_MATRIX_INVERSE }, - - { NULL, 0, 0 } - }; - gl_state_index tokens[STATE_LENGTH]; - GLuint i; - GLboolean isMatrix = GL_FALSE; - - for (i = 0; i < STATE_LENGTH; i++) { - tokens[i] = 0; - } - *swizzleOut = SWIZZLE_NOOP; - - /* first, look if var is a pre-defined matrix */ - for (i = 0; matrices[i].name; i++) { - if (strcmp(var, matrices[i].name) == 0) { - tokens[0] = matrices[i].matrix; - /* tokens[1], [2] and [3] filled below */ - tokens[4] = matrices[i].modifier; - isMatrix = GL_TRUE; - break; - } - } - - if (isMatrix) { - if (tokens[0] == STATE_TEXTURE_MATRIX) { - /* texture_matrix[index1][index2] */ - tokens[1] = index1 >= 0 ? index1 : 0; /* which texture matrix */ - index1 = index2; /* move matrix row value to index1 */ - } - if (index1 < 0) { - /* index1 is unused: prevent extra addition at end of function */ - index1 = 0; - } - } - else if (strcmp(var, "gl_DepthRange") == 0) { - tokens[0] = STATE_DEPTH_RANGE; - assert(field); - if (strcmp(field, "near") == 0) { - *swizzleOut = SWIZZLE_XXXX; - } - else if (strcmp(field, "far") == 0) { - *swizzleOut = SWIZZLE_YYYY; - } - else if (strcmp(field, "diff") == 0) { - *swizzleOut = SWIZZLE_ZZZZ; - } - else { - return -1; - } - } - else if (strcmp(var, "gl_ClipPlane") == 0) { - if (index1 < 0) - return -1; - tokens[0] = STATE_CLIPPLANE; - tokens[1] = index1; - } - else if (strcmp(var, "gl_Point") == 0) { - assert(field); - if (strcmp(field, "size") == 0) { - tokens[0] = STATE_POINT_SIZE; - *swizzleOut = SWIZZLE_XXXX; - } - else if (strcmp(field, "sizeMin") == 0) { - tokens[0] = STATE_POINT_SIZE; - *swizzleOut = SWIZZLE_YYYY; - } - else if (strcmp(field, "sizeMax") == 0) { - tokens[0] = STATE_POINT_SIZE; - *swizzleOut = SWIZZLE_ZZZZ; - } - else if (strcmp(field, "fadeThresholdSize") == 0) { - tokens[0] = STATE_POINT_SIZE; - *swizzleOut = SWIZZLE_WWWW; - } - else if (strcmp(field, "distanceConstantAttenuation") == 0) { - tokens[0] = STATE_POINT_ATTENUATION; - *swizzleOut = SWIZZLE_XXXX; - } - else if (strcmp(field, "distanceLinearAttenuation") == 0) { - tokens[0] = STATE_POINT_ATTENUATION; - *swizzleOut = SWIZZLE_YYYY; - } - else if (strcmp(field, "distanceQuadraticAttenuation") == 0) { - tokens[0] = STATE_POINT_ATTENUATION; - *swizzleOut = SWIZZLE_ZZZZ; - } - else { - return -1; - } - } - else if (strcmp(var, "gl_FrontMaterial") == 0 || - strcmp(var, "gl_BackMaterial") == 0) { - tokens[0] = STATE_MATERIAL; - if (strcmp(var, "gl_FrontMaterial") == 0) - tokens[1] = 0; - else - tokens[1] = 1; - assert(field); - if (strcmp(field, "emission") == 0) { - tokens[2] = STATE_EMISSION; - } - else if (strcmp(field, "ambient") == 0) { - tokens[2] = STATE_AMBIENT; - } - else if (strcmp(field, "diffuse") == 0) { - tokens[2] = STATE_DIFFUSE; - } - else if (strcmp(field, "specular") == 0) { - tokens[2] = STATE_SPECULAR; - } - else if (strcmp(field, "shininess") == 0) { - tokens[2] = STATE_SHININESS; - *swizzleOut = SWIZZLE_XXXX; - } - else { - return -1; - } - } - 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; - } - else if (strcmp(field, "diffuse") == 0) { - tokens[2] = STATE_DIFFUSE; - } - else if (strcmp(field, "specular") == 0) { - tokens[2] = STATE_SPECULAR; - } - else if (strcmp(field, "position") == 0) { - tokens[2] = STATE_POSITION; - } - else if (strcmp(field, "halfVector") == 0) { - tokens[2] = STATE_HALF_VECTOR; - } - else if (strcmp(field, "spotDirection") == 0) { - tokens[2] = STATE_SPOT_DIRECTION; - } - else if (strcmp(field, "spotCosCutoff") == 0) { - tokens[2] = STATE_SPOT_DIRECTION; - *swizzleOut = SWIZZLE_WWWW; - } - else if (strcmp(field, "spotCutoff") == 0) { - tokens[2] = STATE_SPOT_CUTOFF; - *swizzleOut = SWIZZLE_XXXX; - } - else if (strcmp(field, "spotExponent") == 0) { - tokens[2] = STATE_ATTENUATION; - *swizzleOut = SWIZZLE_WWWW; - } - else if (strcmp(field, "constantAttenuation") == 0) { - tokens[2] = STATE_ATTENUATION; - *swizzleOut = SWIZZLE_XXXX; - } - else if (strcmp(field, "linearAttenuation") == 0) { - tokens[2] = STATE_ATTENUATION; - *swizzleOut = SWIZZLE_YYYY; - } - else if (strcmp(field, "quadraticAttenuation") == 0) { - tokens[2] = STATE_ATTENUATION; - *swizzleOut = SWIZZLE_ZZZZ; - } - else { - return -1; - } - } - else if (strcmp(var, "gl_LightModel") == 0) { - if (strcmp(field, "ambient") == 0) { - tokens[0] = STATE_LIGHTMODEL_AMBIENT; - } - else { - return -1; - } - } - else if (strcmp(var, "gl_FrontLightModelProduct") == 0) { - if (strcmp(field, "sceneColor") == 0) { - tokens[0] = STATE_LIGHTMODEL_SCENECOLOR; - tokens[1] = 0; - } - else { - return -1; - } - } - else if (strcmp(var, "gl_BackLightModelProduct") == 0) { - if (strcmp(field, "sceneColor") == 0) { - tokens[0] = STATE_LIGHTMODEL_SCENECOLOR; - tokens[1] = 1; - } - else { - return -1; - } - } - 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) { - tokens[2] = 0; /* front */ - } - else { - tokens[2] = 1; /* back */ - } - if (strcmp(field, "ambient") == 0) { - tokens[3] = STATE_AMBIENT; - } - else if (strcmp(field, "diffuse") == 0) { - tokens[3] = STATE_DIFFUSE; - } - else if (strcmp(field, "specular") == 0) { - tokens[3] = STATE_SPECULAR; - } - else { - return -1; - } - } - 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; - } - else if (strcmp(var, "gl_Fog") == 0) { - if (strcmp(field, "color") == 0) { - tokens[0] = STATE_FOG_COLOR; - } - else if (strcmp(field, "density") == 0) { - tokens[0] = STATE_FOG_PARAMS; - *swizzleOut = SWIZZLE_XXXX; - } - else if (strcmp(field, "start") == 0) { - tokens[0] = STATE_FOG_PARAMS; - *swizzleOut = SWIZZLE_YYYY; - } - else if (strcmp(field, "end") == 0) { - tokens[0] = STATE_FOG_PARAMS; - *swizzleOut = SWIZZLE_ZZZZ; - } - else if (strcmp(field, "scale") == 0) { - tokens[0] = STATE_FOG_PARAMS; - *swizzleOut = SWIZZLE_WWWW; - } - else { - return -1; - } - } - else { - return -1; - } - - if (isMatrix) { - /* load all four rows (or columns) of matrix */ - GLint pos[4]; - GLuint j; - for (j = 0; j < 4; j++) { - tokens[2] = tokens[3] = j; /* jth row of matrix */ - pos[j] = _mesa_add_state_reference(paramList, tokens); - assert(pos[j] >= 0); - ASSERT(pos[j] >= 0); - } - return pos[0] + index1; - } - else { - /* allocate a single register */ - GLint pos = _mesa_add_state_reference(paramList, tokens); - ASSERT(pos >= 0); - return pos; - } -} - - - -/** - * 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 = -1; - 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; - tokens[2] = STATE_TEXGEN_EYE_S; - } - else if (strcmp(name, "gl_EyePlaneT") == 0) { - tokens[0] = STATE_TEXGEN; - tokens[2] = STATE_TEXGEN_EYE_T; - } - else if (strcmp(name, "gl_EyePlaneR") == 0) { - tokens[0] = STATE_TEXGEN; - tokens[2] = STATE_TEXGEN_EYE_R; - } - else if (strcmp(name, "gl_EyePlaneQ") == 0) { - tokens[0] = STATE_TEXGEN; - tokens[2] = STATE_TEXGEN_EYE_Q; - } - else if (strcmp(name, "gl_ObjectPlaneS") == 0) { - tokens[0] = STATE_TEXGEN; - tokens[2] = STATE_TEXGEN_OBJECT_S; - } - else if (strcmp(name, "gl_ObjectPlaneT") == 0) { - tokens[0] = STATE_TEXGEN; - tokens[2] = STATE_TEXGEN_OBJECT_T; - } - else if (strcmp(name, "gl_ObjectPlaneR") == 0) { - tokens[0] = STATE_TEXGEN; - tokens[2] = STATE_TEXGEN_OBJECT_R; - } - else if (strcmp(name, "gl_ObjectPlaneQ") == 0) { - tokens[0] = STATE_TEXGEN; - tokens[2] = STATE_TEXGEN_OBJECT_Q; - } - else if (strcmp(name, "gl_TextureMatrix") == 0) { - tokens[0] = STATE_TEXTURE_MATRIX; - tokens[4] = STATE_MATRIX_TRANSPOSE; - } - else if (strcmp(name, "gl_TextureMatrixInverse") == 0) { - tokens[0] = STATE_TEXTURE_MATRIX; - tokens[4] = STATE_MATRIX_INVTRANS; - } - else if (strcmp(name, "gl_TextureMatrixTranspose") == 0) { - tokens[0] = STATE_TEXTURE_MATRIX; - tokens[4] = 0; - } - else if (strcmp(name, "gl_TextureMatrixInverseTranspose") == 0) { - tokens[0] = STATE_TEXTURE_MATRIX; - tokens[4] = STATE_MATRIX_INVERSE; - } - else { - return -1; /* invalid array name */ - } - /* emit state vars for each array element */ - 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 = 0; - 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 if (type->type == SLANG_SPEC_MAT4) { - /* unroll/emit 4 array rows (or columns) */ - slang_type_specifier vec4; - GLint i, p, pos = -1; - vec4.type = SLANG_SPEC_VEC4; - for (i = 0; i < 4; i++) { - tokens[2] = tokens[3] = i; /* row[i] (or column[i]) of matrix */ - p = emit_statevars(NULL, 0, &vec4, tokens, paramList); - if (pos == -1) - 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. - * - * 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 - * var[i] - * var.field - * var[i].field - * var[i][j] - * - * \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, - GLboolean *direct) -{ - slang_ir_node *n0 = n; - 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) { - if (n->Children[1]->Opcode == IR_FLOAT) { - index1 = (GLint) n->Children[1]->Value[0]; - } - else { - *direct = GL_FALSE; - } - n = n->Children[0]; - } - - if (n->Opcode == IR_ELEMENT) { - /* XXX can only handle constant indexes for now */ - if (n->Children[1]->Opcode == IR_FLOAT) { - /* two-dimensional array index: mat[i][j] */ - index2 = index1; - index1 = (GLint) n->Children[1]->Value[0]; - } - else { - *direct = GL_FALSE; - } - n = n->Children[0]; - } - - assert(n->Opcode == IR_VAR); - - 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; - } - } - - *direct = GL_FALSE; - return alloc_state_var_array(n->Var, paramList); -} - - - - -#define SWIZZLE_ZWWW MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_W, SWIZZLE_W, SWIZZLE_W) - - -/** Predefined shader inputs */ -struct input_info -{ - const char *Name; - GLuint Attrib; - GLenum Type; - GLuint Swizzle; - GLboolean Array; -}; - -/** Predefined vertex shader inputs/attributes */ -static const struct input_info vertInputs[] = { - { "gl_Vertex", VERT_ATTRIB_POS, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_Normal", VERT_ATTRIB_NORMAL, GL_FLOAT_VEC3, SWIZZLE_NOOP, GL_FALSE }, - { "gl_Color", VERT_ATTRIB_COLOR0, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_SecondaryColor", VERT_ATTRIB_COLOR1, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_FogCoord", VERT_ATTRIB_FOG, GL_FLOAT, SWIZZLE_XXXX, GL_FALSE }, - { "gl_MultiTexCoord0", VERT_ATTRIB_TEX0, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_MultiTexCoord1", VERT_ATTRIB_TEX1, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_MultiTexCoord2", VERT_ATTRIB_TEX2, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_MultiTexCoord3", VERT_ATTRIB_TEX3, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_MultiTexCoord4", VERT_ATTRIB_TEX4, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_MultiTexCoord5", VERT_ATTRIB_TEX5, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_MultiTexCoord6", VERT_ATTRIB_TEX6, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_MultiTexCoord7", VERT_ATTRIB_TEX7, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE } -}; - -static const struct input_info geomInputs[] = { - { "gl_PrimitiveIDIn", GEOM_ATTRIB_PRIMITIVE_ID, GL_FLOAT, SWIZZLE_NOOP, GL_FALSE }, - { "gl_FrontColorIn", GEOM_ATTRIB_COLOR0, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_TRUE }, - { "gl_BackColorIn", GEOM_ATTRIB_COLOR1, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_TRUE }, - { "gl_FrontSecondaryColorIn", GEOM_ATTRIB_SECONDARY_COLOR0, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_TRUE }, - { "gl_BackSecondaryColorIn", GEOM_ATTRIB_SECONDARY_COLOR1, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_TRUE }, - { "gl_TexCoordIn", GEOM_ATTRIB_TEX_COORD, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_TRUE }, - { "gl_FogFragCoordIn", GEOM_ATTRIB_FOG_FRAG_COORD, GL_FLOAT, SWIZZLE_NOOP, GL_TRUE }, - { "gl_PositionIn", GEOM_ATTRIB_POSITION, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_TRUE }, - { "gl_ClipVertexIn", GEOM_ATTRIB_CLIP_VERTEX, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_TRUE }, - { "gl_PointSizeIn", GEOM_ATTRIB_POINT_SIZE, GL_FLOAT, SWIZZLE_NOOP, GL_TRUE } -}; - -/** Predefined fragment shader inputs */ -static const struct input_info fragInputs[] = { - { "gl_FragCoord", FRAG_ATTRIB_WPOS, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_Color", FRAG_ATTRIB_COL0, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_SecondaryColor", FRAG_ATTRIB_COL1, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_TexCoord", FRAG_ATTRIB_TEX0, GL_FLOAT_VEC4, SWIZZLE_NOOP, GL_FALSE }, - { "gl_FogFragCoord", FRAG_ATTRIB_FOGC, GL_FLOAT, SWIZZLE_XXXX, GL_FALSE }, - { "gl_FrontFacing", FRAG_ATTRIB_FACE, GL_FLOAT, SWIZZLE_XXXX, GL_FALSE }, - { "gl_PointCoord", FRAG_ATTRIB_PNTC, GL_FLOAT_VEC2, SWIZZLE_XYZW, GL_FALSE } -}; - - -/** - * Return the VERT_ATTRIB_* or FRAG_ATTRIB_* value that corresponds to - * a vertex or fragment program input variable. Return -1 if the input - * name is invalid. - * XXX return size too - */ -GLint -_slang_input_index(const char *name, GLenum target, GLuint *swizzleOut, - GLboolean *is_array) -{ - const struct input_info *inputs; - GLuint i, n; - - switch (target) { - case GL_VERTEX_PROGRAM_ARB: - inputs = vertInputs; - n = Elements(vertInputs); - break; - case GL_FRAGMENT_PROGRAM_ARB: - inputs = fragInputs; - n = Elements(fragInputs); - break; - case MESA_GEOMETRY_PROGRAM: - inputs = geomInputs; - n = Elements(geomInputs); - break; - default: - _mesa_problem(NULL, "bad target in _slang_input_index"); - return -1; - } - - ASSERT(MAX_TEXTURE_COORD_UNITS == 8); /* if this fails, fix vertInputs above */ - - for (i = 0; i < n; i++) { - if (strcmp(inputs[i].Name, name) == 0) { - /* found */ - *swizzleOut = inputs[i].Swizzle; - if (is_array) - *is_array = inputs[i].Array; - return inputs[i].Attrib; - } - } - return -1; -} - - -/** - * Return name of the given vertex attribute (VERT_ATTRIB_x). - */ -const char * -_slang_vert_attrib_name(GLuint attrib) -{ - GLuint i; - assert(attrib < VERT_ATTRIB_GENERIC0); - for (i = 0; Elements(vertInputs); i++) { - if (vertInputs[i].Attrib == attrib) - return vertInputs[i].Name; - } - return NULL; -} - - -/** - * Return type (GL_FLOAT, GL_FLOAT_VEC2, etc) of the given vertex - * attribute (VERT_ATTRIB_x). - */ -GLenum -_slang_vert_attrib_type(GLuint attrib) -{ - GLuint i; - assert(attrib < VERT_ATTRIB_GENERIC0); - for (i = 0; Elements(vertInputs); i++) { - if (vertInputs[i].Attrib == attrib) - return vertInputs[i].Type; - } - return GL_NONE; -} - - - - - -/** Predefined shader output info */ -struct output_info -{ - const char *Name; - GLuint Attrib; - GLenum Type; -}; - -/** Predefined vertex shader outputs */ -static const struct output_info vertOutputs[] = { - { "gl_Position", VERT_RESULT_HPOS, GL_FLOAT_VEC4 }, - { "gl_FrontColor", VERT_RESULT_COL0, GL_FLOAT_VEC4 }, - { "gl_BackColor", VERT_RESULT_BFC0, GL_FLOAT_VEC4 }, - { "gl_FrontSecondaryColor", VERT_RESULT_COL1, GL_FLOAT_VEC4 }, - { "gl_BackSecondaryColor", VERT_RESULT_BFC1, GL_FLOAT_VEC4 }, - { "gl_TexCoord", VERT_RESULT_TEX0, GL_FLOAT_VEC4 }, - { "gl_FogFragCoord", VERT_RESULT_FOGC, GL_FLOAT }, - { "gl_PointSize", VERT_RESULT_PSIZ, GL_FLOAT } -}; - -/** Predefined geometry shader outputs */ -static const struct output_info geomOutputs[] = { - { "gl_Position", GEOM_RESULT_POS, GL_FLOAT_VEC4 }, - { "gl_FrontColor", GEOM_RESULT_COL0, GL_FLOAT_VEC4 }, - { "gl_BackColor", GEOM_RESULT_COL1, GL_FLOAT_VEC4 }, - { "gl_FrontSecondaryColor", GEOM_RESULT_SCOL0, GL_FLOAT_VEC4 }, - { "gl_BackSecondaryColor", GEOM_RESULT_SCOL1, GL_FLOAT_VEC4 }, - { "gl_TexCoord", GEOM_RESULT_TEX0, GL_FLOAT_VEC4 }, - { "gl_FogFragCoord", GEOM_RESULT_FOGC, GL_FLOAT }, - { "gl_ClipVertex", GEOM_RESULT_CLPV, GL_FLOAT_VEC4 }, - { "gl_PointSize", GEOM_RESULT_PSIZ, GL_FLOAT }, - { "gl_PrimitiveID", GEOM_RESULT_PRID, GL_FLOAT }, - { "gl_Layer", GEOM_RESULT_LAYR, GL_FLOAT } -}; - -/** Predefined fragment shader outputs */ -static const struct output_info fragOutputs[] = { - { "gl_FragColor", FRAG_RESULT_COLOR, GL_FLOAT_VEC4 }, - { "gl_FragDepth", FRAG_RESULT_DEPTH, GL_FLOAT }, - { "gl_FragData", FRAG_RESULT_DATA0, GL_FLOAT_VEC4 } -}; - - -/** - * Return the VERT_RESULT_*, GEOM_RESULT_* or FRAG_RESULT_* value that corresponds - * to a vertex or fragment program output variable. Return -1 for an invalid - * output name. - */ -GLint -_slang_output_index(const char *name, GLenum target) -{ - const struct output_info *outputs; - GLuint i, n; - - switch (target) { - case GL_VERTEX_PROGRAM_ARB: - outputs = vertOutputs; - n = Elements(vertOutputs); - break; - case GL_FRAGMENT_PROGRAM_ARB: - outputs = fragOutputs; - n = Elements(fragOutputs); - break; - case MESA_GEOMETRY_PROGRAM: - outputs = geomOutputs; - n = Elements(geomOutputs); - break; - default: - _mesa_problem(NULL, "bad target in _slang_output_index"); - return -1; - } - - for (i = 0; i < n; i++) { - if (strcmp(outputs[i].Name, name) == 0) { - /* found */ - return outputs[i].Attrib; - } - } - return -1; -} - - -/** - * Given a VERT_RESULT_x index, return the corresponding string name. - */ -const char * -_slang_vertex_output_name(gl_vert_result index) -{ - if (index < Elements(vertOutputs)) - return vertOutputs[index].Name; - else - return NULL; -} - - -/** - * Given a GEOM_RESULT_x index, return the corresponding string name. - */ -const char * -_slang_geometry_output_name(gl_geom_result index) -{ - if (index < Elements(geomOutputs)) - return geomOutputs[index].Name; - else - return NULL; -} - - -/** - * Given a FRAG_RESULT_x index, return the corresponding string name. - */ -const char * -_slang_fragment_output_name(gl_frag_result index) -{ - if (index < Elements(fragOutputs)) - return fragOutputs[index].Name; - else - return NULL; -} - - -/** - * Given a VERT_RESULT_x index, return the corresponding varying - * var's datatype. - */ -GLenum -_slang_vertex_output_type(gl_vert_result index) -{ - if (index < Elements(vertOutputs)) - return vertOutputs[index].Type; - else - return GL_NONE; -} |