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Cosmetic changes.

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This commit is contained in:
Michal Krol 2006-02-13 11:42:48 +00:00
parent 41eeae5fb1
commit ebcbf2f853
4 changed files with 301 additions and 633 deletions
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385
src/mesa/shader/slang/library/slang_fragment_builtin.gc
View file

@ -1,72 +1,14 @@
//
//
// TODO:
// - implement texture1D, texture2D, texture3D, textureCube,
// - implement shadow1D, shadow2D,
// - implement dFdx, dFdy,
//
//
//
//
// From Shader Spec, ver. 1.10, rev. 59
//
// The output of the fragment shader is processed by the fixed function operations at the back end
// of the OpenGL pipeline. Fragment shaders output values to the OpenGL pipeline using the built-in
// variables gl_FragColor, gl_FragData and gl_FragDepth, unless the discard keyword is executed.
//
// These variables may be written more than once within a fragment shader. If so, the last value
// assigned is the one used in the subsequent fixed function pipeline. The values written to these
// variables may be read back after writing them. Reading from these variables before writing them
// results in an undefined value. The fixed functionality computed depth for a fragment may be
// obtained by reading gl_FragCoord.z, described below.
//
// Writing to gl_FragColor specifies the fragment color that will be used by the subsequent fixed
// functionality pipeline. If subsequent fixed functionality consumes fragment color and an
// execution of a fragment shader does not write a value to gl_FragColor then the fragment color
// consumed is undefined.
//
// If the frame buffer is configured as a color index buffer then behavior is undefined when using
// a fragment shader.
//
// Writing to gl_FragDepth will establish the depth value for the fragment being processed. If
// depth buffering is enabled, and a shader does not write gl_FragDepth, then the fixed function
// value for depth will be used as the fragment's depth value. If a shader statically assigns
// a value to gl_FragDepth, and there is an execution path through the shader that does not set
// gl_FragDepth, then the value of the fragment's depth may be undefined for executions of the
// shader that take that path. That is, if a shader statically contains a write gl_FragDepth, then
// it is responsible for always writing it.
//
// (A shader contains a static assignment to a variable x if, after pre-processing, the shader
// contains statement that would write x, whether or not run-time flow of control will cause
// that statement to be executed.)
//
// The variable gl_FragData is an array. Writing to gl_FragData[n] specifies the fragment data
// that will be used by the subsequent fixed functionality pipeline for data n. If subsequent
// fixed functionality consumes fragment data and an execution of a fragment shader does not
// write a value to it, then the fragment data consumed is undefined.
//
// If a shader statically assigns a value to gl_FragColor, it may not assign a value to any element
// of gl_FragData. If a shader statically writes a value to any element of gl_FragData, it may not
// assign a value to gl_FragColor. That is, a shader may assign values to either gl_FragColor or
// gl_FragData, but not both.
//
// If a shader executes the discard keyword, the fragment is discarded, and the values of
// gl_FragDepth, gl_FragColor and gl_FragData become irrelevant.
//
// The variable gl_FragCoord is available as a read-only variable from within fragment shaders
// and it holds the window relative coordinates x, y, z, and 1/w values for the fragment. This
// value is the result of the fixed functionality that interpolates primitives after vertex
// processing to generate fragments. The z component is the depth value that would be used for
// the fragment's depth if a shader contained no writes to gl_FragDepth. This is useful for
// invariance if a shader conditionally computes gl_FragDepth but otherwise wants the fixed
// functionality fragment depth.
//
// The fragment shader has access to the read-only built-in variable gl_FrontFacing whose value
// is true if the fragment belongs to a front-facing primitive. One use of this is to emulate
// two-sided lighting by selecting one of two colors calculated by the vertex shader.
//
// The built-in variables that are accessible from a fragment shader are intrinsically given types
// as follows:
//
__fixed_input vec4 gl_FragCoord;
__fixed_input bool gl_FrontFacing;
@ -74,292 +16,147 @@ __fixed_output vec4 gl_FragColor;
__fixed_output vec4 gl_FragData[gl_MaxDrawBuffers];
__fixed_output float gl_FragDepth;
//
// However, they do not behave like variables with no qualifier; their behavior is as described
// above. These built-in variables have global scope.
//
//
// Unlike user-defined varying variables, the built-in varying variables don't have a strict
// one-to-one correspondence between the vertex language and the fragment language. Two sets are
// provided, one for each language. Their relationship is described below.
//
// The following varying variables are available to read from in a fragment shader. The gl_Color
// and gl_SecondaryColor names are the same names as attributes passed to the vertex shader.
// However, there is no name conflict, because attributes are visible only in vertex shaders
// and the following are only visible in a fragment shader.
//
varying vec4 gl_Color;
varying vec4 gl_SecondaryColor;
varying vec4 gl_TexCoord[]; // at most will be gl_MaxTextureCoords
varying vec4 gl_TexCoord[gl_MaxTextureCoords];
varying float gl_FogFragCoord;
//
// The values in gl_Color and gl_SecondaryColor will be derived automatically by the system from
// gl_FrontColor, gl_BackColor, gl_FrontSecondaryColor, and gl_BackSecondaryColor based on which
// face is visible. If fixed functionality is used for vertex processing, then gl_FogFragCoord will
// either be the z-coordinate of the fragment in eye space, or the interpolation of the fog
// coordinate, as described in section 3.10 of the OpenGL 1.4 Specification. The gl_TexCoord[]
// values are the interpolated gl_TexCoord[] values from a vertex shader or the texture coordinates
// of any fixed pipeline based vertex functionality.
//
// Indices to the fragment shader gl_TexCoord array are as described above in the vertex shader
// text.
//
//
// The OpenGL Shading Language defines an assortment of built-in convenience functions for scalar
// and vector operations. Many of these built-in functions can be used in more than one type
// of shader, but some are intended to provide a direct mapping to hardware and so are available
// only for a specific type of shader.
//
// The built-in functions basically fall into three categories:
//
// * They expose some necessary hardware functionality in a convenient way such as accessing
// a texture map. There is no way in the language for these functions to be emulated by a shader.
//
// * They represent a trivial operation (clamp, mix, etc.) that is very simple for the user
// to write, but they are very common and may have direct hardware support. It is a very hard
// problem for the compiler to map expressions to complex assembler instructions.
//
// * They represent an operation graphics hardware is likely to accelerate at some point. The
// trigonometry functions fall into this category.
//
// Many of the functions are similar to the same named ones in common C libraries, but they support
// vector input as well as the more traditional scalar input.
//
// Applications should be encouraged to use the built-in functions rather than do the equivalent
// computations in their own shader code since the built-in functions are assumed to be optimal
// (e.g., perhaps supported directly in hardware).
//
// User code can replace built-in functions with their own if they choose, by simply re-declaring
// and defining the same name and argument list.
//
//
//
// 8.7 Texture Lookup Functions
//
// Texture lookup functions are available to both vertex and fragment shaders. However, level
// of detail is not computed by fixed functionality for vertex shaders, so there are some
// differences in operation between vertex and fragment texture lookups. The functions in the table
// below provide access to textures through samplers, as set up through the OpenGL API. Texture
// properties such as size, pixel format, number of dimensions, filtering method, number of mip-map
// levels, depth comparison, and so on are also defined by OpenGL API calls. Such properties are
// taken into account as the texture is accessed via the built-in functions defined below.
//
// If a non-shadow texture call is made to a sampler that represents a depth texture with depth
// comparisons turned on, then results are undefined. If a shadow texture call is made to a sampler
// that represents a depth texture with depth comparisions turned off, the results are undefined.
// If a shadow texture call is made to a sampler that does not represent a depth texture, then
// results are undefined.
//
// In all functions below, the bias parameter is optional for fragment shaders. The bias parameter
// is not accepted in a vertex shader. For a fragment shader, if bias is present, it is added to
// the calculated level of detail prior to performing the texture access operation. If the bias
// parameter is not provided, then the implementation automatically selects level of detail:
// For a texture that is not mip-mapped, the texture is used directly. If it is mip-mapped and
// running in a fragment shader, the LOD computed by the implementation is used to do the texture
// lookup. If it is mip-mapped and running on the vertex shader, then the base texture is used.
//
// The built-ins suffixed with "Lod" are allowed only in a vertex shader. For the "Lod" functions,
// lod is directly used as the level of detail.
//
//
//
// Use the texture coordinate coord to do a texture lookup in the 1D texture currently bound
// to sampler. For the projective ("Proj") versions, the texture coordinate coord.s is divided by
// the last component of coord.
//
// XXX
vec4 texture1D (sampler1D sampler, float coord, float bias) {
vec4 texture1D (sampler1D sampler, float coord, float bias) {
// XXX:
return vec4 (0.0);
}
}
vec4 texture1DProj (sampler1D sampler, vec2 coord, float bias) {
return texture1D (sampler, coord.s / coord.t, bias);
}
}
vec4 texture1DProj (sampler1D sampler, vec4 coord, float bias) {
return texture1D (sampler, coord.s / coord.q, bias);
}
//
// Use the texture coordinate coord to do a texture lookup in the 2D texture currently bound
// to sampler. For the projective ("Proj") versions, the texture coordinate (coord.s, coord.t) is
// divided by the last component of coord. The third component of coord is ignored for the vec4
// coord variant.
//
// XXX
vec4 texture2D (sampler2D sampler, vec2 coord, float bias) {
vec4 texture2D (sampler2D sampler, vec2 coord, float bias) {
// XXX:
return vec4 (0.0);
}
vec4 texture2DProj (sampler2D sampler, vec3 coord, float bias) {
return texture2D (sampler, vec2 (coord.s / coord.p, coord.t / coord.p), bias);
}
vec4 texture2DProj (sampler2D sampler, vec4 coord, float bias) {
return texture2D (sampler, vec2 (coord.s / coord.q, coord.s / coord.q), bias);
}
vec4 texture2DProj (sampler2D sampler, vec3 coord, float bias) {
vec2 u;
u.s = coord.s / coord.p;
u.t = coord.t / coord.p;
return texture2D (sampler, u, bias);
}
vec4 texture2DProj (sampler2D sampler, vec4 coord, float bias) {
vec2 u;
u.s = coord.s / coord.q;
u.t = coord.t / coord.q;
return texture2D (sampler, u, bias);
}
//
// Use the texture coordinate coord to do a texture lookup in the 3D texture currently bound
// to sampler. For the projective ("Proj") versions, the texture coordinate is divided by coord.q.
//
// XXX
vec4 texture3D (sampler3D sampler, vec3 coord, float bias) {
vec4 texture3D (sampler3D sampler, vec3 coord, float bias) {
// XXX:
return vec4 (0.0);
}
vec4 texture3DProj (sampler3D sampler, vec4 coord, float bias) {
return texture3DProj (sampler, vec3 (coord.s / coord.q, coord.t / coord.q, coord.p / coord.q),
bias);
}
vec4 texture3DProj (sampler3D sampler, vec4 coord, float bias) {
vec3 u;
u.s = coord.s / coord.q;
u.t = coord.t / coord.q;
u.p = coord.p / coord.q;
return texture3D (sampler, u, bias);
}
//
// Use the texture coordinate coord to do a texture lookup in the cube map texture currently bound
// to sampler. The direction of coord is used to select which face to do a 2-dimensional texture
// lookup in, as described in section 3.8.6 in version 1.4 of the OpenGL specification.
//
// XXX
vec4 textureCube (samplerCube sampler, vec3 coord, float bias) {
vec4 textureCube (samplerCube sampler, vec3 coord, float bias) {
// XXX:
return vec4 (0.0);
}
//
// Use texture coordinate coord to do a depth comparison lookup on the depth texture bound
// to sampler, as described in section 3.8.14 of version 1.4 of the OpenGL specification. The 3rd
// component of coord (coord.p) is used as the R value. The texture bound to sampler must be a
// depth texture, or results are undefined. For the projective ("Proj") version of each built-in,
// the texture coordinate is divide by coord.q, giving a depth value R of coord.p/coord.q. The
// second component of coord is ignored for the "1D" variants.
//
// XXX
vec4 shadow1D (sampler1DShadow sampler, vec3 coord, float bias) {
vec4 shadow1D (sampler1DShadow sampler, vec3 coord, float bias) {
// XXX:
return vec4 (0.0);
}
// XXX
vec4 shadow2D (sampler2DShadow sampler, vec3 coord, float bias) {
}
vec4 shadow2D (sampler2DShadow sampler, vec3 coord, float bias) {
// XXX:
return vec4 (0.0);
}
vec4 shadow1DProj (sampler1DShadow sampler, vec4 coord, float bias) {
return shadow1D (sampler, vec3 (coord.s / coord.q, 0.0, coord.p / coord.q), bias);
}
vec4 shadow2DProj (sampler2DShadow sampler, vec4 coord, float bias) {
return shadow2D (sampler, vec3 (coord.s / coord.q, coord.t / coord.q, coord.p / coord.q), bias);
}
vec4 shadow1DProj (sampler1DShadow sampler, vec4 coord, float bias) {
vec3 u;
u.s = coord.s / coord.q;
u.t = 0.0;
u.p = coord.p / coord.q;
return shadow1D (sampler, u, bias);
}
vec4 shadow2DProj (sampler2DShadow sampler, vec4 coord, float bias) {
vec3 u;
u.s = coord.s / coord.q;
u.t = coord.t / coord.q;
u.p = coord.p / coord.q;
return shadow2D (sampler, u, bias);
}
//
// 8.8 Fragment Processing Functions
//
// Fragment processing functions are only available in shaders intended for use on the fragment
// processor. Derivatives may be computationally expensive and/or numerically unstable. Therefore,
// an OpenGL implementation may approximate the true derivatives by using a fast but not entirely
// accurate derivative computation.
//
// The expected behavior of a derivative is specified using forward/backward differencing.
//
// Forward differencing:
//
// F(x+dx) - F(x) ~ dFdx(x) * dx 1a
// dFdx(x) ~ (F(x+dx) - F(x)) / dx 1b
//
// Backward differencing:
//
// F(x-dx) - F(x) ~ -dFdx(x) * dx 2a
// dFdx(x) ~ (F(x) - F(x-dx)) / dx 2b
//
// With single-sample rasterization, dx <= 1.0 in equations 1b and 2b. For multi-sample
// rasterization, dx < 2.0 in equations 1b and 2b.
//
// dFdy is approximated similarly, with y replacing x.
//
// A GL implementation may use the above or other methods to perform the calculation, subject
// to the following conditions:
//
// 1) The method may use piecewise linear approximations. Such linear approximations imply that
// higher order derivatives, dFdx(dFdx(x)) and above, are undefined.
//
// 2) The method may assume that the function evaluated is continuous. Therefore derivatives within
// the body of a non-uniform conditional are undefined.
//
// 3) The method may differ per fragment, subject to the constraint that the method may vary by
// window coordinates, not screen coordinates. The invariance requirement described in section
// 3.1 of the OpenGL 1.4 specification is relaxed for derivative calculations, because
// the method may be a function of fragment location.
//
// Other properties that are desirable, but not required, are:
//
// 4) Functions should be evaluated within the interior of a primitive (interpolated, not
// extrapolated).
//
// 5) Functions for dFdx should be evaluated while holding y constant. Functions for dFdy should
// be evaluated while holding x constant. However, mixed higher order derivatives, like
// dFdx(dFdy(y)) and dFdy(dFdx(x)) are undefined.
//
// In some implementations, varying degrees of derivative accuracy may be obtained by providing
// GL hints (section 5.6 of the OpenGL 1.4 specification), allowing a user to make an image
// quality versus speed tradeoff.
//
//
//
// Returns the derivative in x using local differencing for the input argument p.
//
// XXX
float dFdx (float p) {
float dFdx (float p) {
// XXX:
return 0.0;
}
// XXX
vec2 dFdx (vec2 p) {
vec2 dFdx (vec2 p) {
// XXX:
return vec2 (0.0);
}
// XXX
vec3 dFdx (vec3 p) {
vec3 dFdx (vec3 p) {
// XXX:
return vec3 (0.0);
}
// XXX
vec4 dFdx (vec4 p) {
vec4 dFdx (vec4 p) {
// XXX:
return vec4 (0.0);
}
//
// Returns the derivative in y using local differencing for the input argument p.
//
// These two functions are commonly used to estimate the filter width used to anti-alias procedural
// textures.We are assuming that the expression is being evaluated in parallel on a SIMD array so
// that at any given point in time the value of the function is known at the grid points
// represented by the SIMD array. Local differencing between SIMD array elements can therefore
// be used to derive dFdx, dFdy, etc.
//
// XXX
float dFdy (float p) {
float dFdy (float p) {
// XXX:
return 0.0;
}
// XXX
vec2 dFdy (vec2 p) {
vec2 dFdy (vec2 p) {
// XXX:
return vec2 (0.0);
}
// XXX
vec3 dFdy (vec3 p) {
vec3 dFdy (vec3 p) {
// XXX:
return vec3 (0.0);
}
// XXX
vec4 dFdy (vec4 p) {
vec4 dFdy (vec4 p) {
// XXX:
return vec4 (0.0);
}
//
// Returns the sum of the absolute derivative in x and y using local differencing for the input
// argument p, i.e.:
//
// return = abs (dFdx (p)) + abs (dFdy (p));
//
float fwidth (float p) {
return abs (dFdx (p)) + abs (dFdy (p));
}
}
vec2 fwidth (vec2 p) {
return abs (dFdx (p)) + abs (dFdy (p));
}
}
vec3 fwidth (vec3 p) {
return abs (dFdx (p)) + abs (dFdy (p));
}
}
vec4 fwidth (vec4 p) {
return abs (dFdx (p)) + abs (dFdy (p));
}

138
src/mesa/shader/slang/library/slang_fragment_builtin_gc.h
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@ -1,67 +1,71 @@
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/* slang_fragment_builtin.gc */
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274
src/mesa/shader/slang/library/slang_vertex_builtin.gc
View file

@ -1,63 +1,18 @@
//
//
// TODO:
// - what to do with ftransform? can it stay in the current form?
// - implement texture1DLod, texture2DLod, texture3DLod, textureCubeLod,
// - implement shadow1DLod, shadow2DLod,
//
//
//
//
// From Shader Spec, ver. 1.10, rev. 59
//
// Some OpenGL operations still continue to occur in fixed functionality in between the vertex
// processor and the fragment processor. Other OpenGL operations continue to occur in fixed
// functionality after the fragment processor. Shaders communicate with the fixed functionality
// of OpenGL through the use of built-in variables.
//
// The variable gl_Position is available only in the vertex language and is intended for writing
// the homogeneous vertex position. All executions of a well-formed vertex shader must write
// a value into this variable. It can be written at any time during shader execution. It may also
// be read back by the shader after being written. This value will be used by primitive assembly,
// clipping, culling, and other fixed functionality operations that operate on primitives after
// vertex processing has occurred. Compilers may generate a diagnostic message if they detect
// gl_Position is not written, or read before being written, but not all such cases are detectable.
// Results are undefined if a vertex shader is executed and does not write gl_Position.
//
// The variable gl_PointSize is available only in the vertex language and is intended for a vertex
// shader to write the size of the point to be rasterized. It is measured in pixels.
//
// The variable gl_ClipVertex is available only in the vertex language and provides a place for
// vertex shaders to write the coordinate to be used with the user clipping planes. The user must
// ensure the clip vertex and user clipping planes are defined in the same coordinate space. User
// clip planes work properly only under linear transform. It is undefined what happens under
// non-linear transform.
//
// These built-in vertex shader variables for communicating with fixed functionality are
// intrinsically declared with the following types:
//
//
__fixed_output vec4 gl_Position; // must be written to
__fixed_output float gl_PointSize; // may be written to
__fixed_output vec4 gl_ClipVertex; // may be written to
//
// If gl_PointSize or gl_ClipVertex are not written to, their values are undefined. Any of these
// variables can be read back by the shader after writing to them, to retrieve what was written.
// Reading them before writing them results in undefined behavior. If they are written more than
// once, it is the last value written that is consumed by the subsequent operations.
//
// These built-in variables have global scope.
//
//
// The following attribute names are built into the OpenGL vertex language and can be used from
// within a vertex shader to access the current values of attributes declared by OpenGL. All page
// numbers and notations are references to the OpenGL 1.4 specification.
//
//
// Vertex Attributes, p. 19.
//
__fixed_output vec4 gl_Position;
__fixed_output float gl_PointSize;
__fixed_output vec4 gl_ClipVertex;
attribute vec4 gl_Color;
attribute vec4 gl_SecondaryColor;
@ -73,190 +28,97 @@ attribute vec4 gl_MultiTexCoord6;
attribute vec4 gl_MultiTexCoord7;
attribute float gl_FogCoord;
//
// Unlike user-defined varying variables, the built-in varying variables don't have a strict
// one-to-one correspondence between the vertex language and the fragment language. Two sets are
// provided, one for each language. Their relationship is described below.
//
// The following built-in varying variables are available to write to in a vertex shader.
// A particular one should be written to if any functionality in a corresponding fragment shader
// or fixed pipeline uses it or state derived from it. Otherwise, behavior is undefined.
//
varying vec4 gl_FrontColor;
varying vec4 gl_BackColor;
varying vec4 gl_FrontSecondaryColor;
varying vec4 gl_BackSecondaryColor;
varying vec4 gl_TexCoord[]; // at most will be gl_MaxTextureCoords
varying vec4 gl_TexCoord[gl_MaxTextureCoords];
varying float gl_FogFragCoord;
//
// For gl_FogFragCoord, the value written will be used as the "c" value on page 160 of the
// OpenGL 1.4 Specification by the fixed functionality pipeline. For example, if the z-coordinate
// of the fragment in eye space is desired as "c", then that's what the vertex shader should write
// into gl_FogFragCoord.
//
// As with all arrays, indices used to subscript gl_TexCoord must either be an integral constant
// expressions, or this array must be re-declared by the shader with a size. The size can be
// at most gl_MaxTextureCoords. Using indexes close to 0 may aid the implementation
// in preserving varying resources.
//
//
// The OpenGL Shading Language defines an assortment of built-in convenience functions for scalar
// and vector operations. Many of these built-in functions can be used in more than one type
// of shader, but some are intended to provide a direct mapping to hardware and so are available
// only for a specific type of shader.
//
// The built-in functions basically fall into three categories:
//
// * They expose some necessary hardware functionality in a convenient way such as accessing
// a texture map. There is no way in the language for these functions to be emulated by a shader.
//
// * They represent a trivial operation (clamp, mix, etc.) that is very simple for the user
// to write, but they are very common and may have direct hardware support. It is a very hard
// problem for the compiler to map expressions to complex assembler instructions.
//
// * They represent an operation graphics hardware is likely to accelerate at some point. The
// trigonometry functions fall into this category.
//
// Many of the functions are similar to the same named ones in common C libraries, but they support
// vector input as well as the more traditional scalar input.
//
// Applications should be encouraged to use the built-in functions rather than do the equivalent
// computations in their own shader code since the built-in functions are assumed to be optimal
// (e.g., perhaps supported directly in hardware).
//
// User code can replace built-in functions with their own if they choose, by simply re-declaring
// and defining the same name and argument list.
//
//
//
// Geometric Functions
//
// These operate on vectors as vectors, not component-wise.
//
//
// For vertex shaders only. This function will ensure that the incoming vertex value will be
// transformed in a way that produces exactly the same result as would be produced by OpenGL's
// fixed functionality transform. It is intended to be used to compute gl_Position, e.g.,
// gl_Position = ftransform()
// This function should be used, for example, when an application is rendering the same geometry in
// separate passes, and one pass uses the fixed functionality path to render and another pass uses
// programmable shaders.
//
//
vec4 ftransform () {
return gl_ModelViewProjectionMatrix * gl_Vertex;
}
//
//
// 8.7 Texture Lookup Functions
//
// Texture lookup functions are available to both vertex and fragment shaders. However, level
// of detail is not computed by fixed functionality for vertex shaders, so there are some
// differences in operation between vertex and fragment texture lookups. The functions in the table
// below provide access to textures through samplers, as set up through the OpenGL API. Texture
// properties such as size, pixel format, number of dimensions, filtering method, number of mip-map
// levels, depth comparison, and so on are also defined by OpenGL API calls. Such properties are
// taken into account as the texture is accessed via the built-in functions defined below.
//
// If a non-shadow texture call is made to a sampler that represents a depth texture with depth
// comparisons turned on, then results are undefined. If a shadow texture call is made to a sampler
// that represents a depth texture with depth comparisions turned off, the results are undefined.
// If a shadow texture call is made to a sampler that does not represent a depth texture, then
// results are undefined.
//
// In all functions below, the bias parameter is optional for fragment shaders. The bias parameter
// is not accepted in a vertex shader. For a fragment shader, if bias is present, it is added to
// the calculated level of detail prior to performing the texture access operation. If the bias
// parameter is not provided, then the implementation automatically selects level of detail:
// For a texture that is not mip-mapped, the texture is used directly. If it is mip-mapped and
// running in a fragment shader, the LOD computed by the implementation is used to do the texture
// lookup. If it is mip-mapped and running on the vertex shader, then the base texture is used.
//
// The built-ins suffixed with "Lod" are allowed only in a vertex shader. For the "Lod" functions,
// lod is directly used as the level of detail.
//
//
//
// Use the texture coordinate coord to do a texture lookup in the 1D texture currently bound
// to sampler. For the projective ("Proj") versions, the texture coordinate coord.s is divided by
// the last component of coord.
//
// XXX
vec4 texture1DLod (sampler1D sampler, float coord, float lod) {
vec4 texture1DLod (sampler1D sampler, float coord, float lod) {
// XXX:
return vec4 (0.0);
}
}
vec4 texture1DProjLod (sampler1D sampler, vec2 coord, float lod) {
return texture1DLod (sampler, coord.s / coord.t, lod);
}
}
vec4 texture1DProjLod (sampler1D sampler, vec4 coord, float lod) {
return texture1DLod (sampler, coord.s / coord.q, lod);
}
//
// Use the texture coordinate coord to do a texture lookup in the 2D texture currently bound
// to sampler. For the projective ("Proj") versions, the texture coordinate (coord.s, coord.t) is
// divided by the last component of coord. The third component of coord is ignored for the vec4
// coord variant.
//
// XXX
vec4 texture2DLod (sampler2D sampler, vec2 coord, float lod) {
vec4 texture2DLod (sampler2D sampler, vec2 coord, float lod) {
// XXX:
return vec4 (0.0);
}
vec4 texture2DProjLod (sampler2D sampler, vec3 coord, float lod) {
return texture2DLod (sampler, vec2 (coord.s / coord.p, coord.t / coord.p), lod);
}
vec4 texture2DProjLod (sampler2D sampler, vec4 coord, float lod) {
return texture2DLod (sampler, vec2 (coord.s / coord.q, coord.t / coord.q), lod);
}
vec4 texture2DProjLod (sampler2D sampler, vec3 coord, float lod) {
vec2 u;
u.s = coord.s / coord.p;
u.t = coord.t / coord.p;
return texture2DLod (sampler, u, lod);
}
vec4 texture2DProjLod (sampler2D sampler, vec4 coord, float lod) {
vec2 u;
u.s = coord.s / coord.q;
u.t = coord.t / coord.q;
return texture2DLod (sampler, u, lod);
}
//
// Use the texture coordinate coord to do a texture lookup in the 3D texture currently bound
// to sampler. For the projective ("Proj") versions, the texture coordinate is divided by coord.q.
//
// XXX
vec4 texture3DLod (sampler3D sampler, vec3 coord, float lod) {
vec4 texture3DLod (sampler3D sampler, vec3 coord, float lod) {
// XXX:
return vec4 (0.0);
}
vec4 texture3DProjLod (sampler3D sampler, vec4 coord, float lod) {
return texture3DLod (sampler, vec3 (coord.s / coord.q, coord.t / coord.q, coord.s / coord.q),
lod);
vec4 texture3DProjLod (sampler3D sampler, vec4 coord, float lod) {
vec3 u;
u.s = coord.s / coord.q;
u.t = coord.t / coord.q;
u.p = coord.p / coord.q;
return texture3DLod (sampler, u, lod);
}
//
// Use the texture coordinate coord to do a texture lookup in the cube map texture currently bound
// to sampler. The direction of coord is used to select which face to do a 2-dimensional texture
// lookup in, as described in section 3.8.6 in version 1.4 of the OpenGL specification.
//
// XXX
vec4 textureCubeLod (samplerCube sampler, vec3 coord, float lod) {
vec4 textureCubeLod (samplerCube sampler, vec3 coord, float lod) {
// XXX:
return vec4 (0.0);
}
//
// Use texture coordinate coord to do a depth comparison lookup on the depth texture bound
// to sampler, as described in section 3.8.14 of version 1.4 of the OpenGL specification. The 3rd
// component of coord (coord.p) is used as the R value. The texture bound to sampler must be a
// depth texture, or results are undefined. For the projective ("Proj") version of each built-in,
// the texture coordinate is divide by coord.q, giving a depth value R of coord.p/coord.q. The
// second component of coord is ignored for the "1D" variants.
//
// XXX
vec4 shadow1DLod (sampler1DShadow sampler, vec3 coord, float lod) {
vec4 shadow1DLod (sampler1DShadow sampler, vec3 coord, float lod) {
// XXX:
return vec4 (0.0);
}
// XXX
vec4 shadow2DLod (sampler2DShadow sampler, vec3 coord, float lod) {
return vec4 (0.0);
}
vec4 shadow1DProjLod (sampler1DShadow sampler, vec4 coord, float lod) {
return shadow1DLod (sampler, vec3 (coord.s / coord.q, 0.0, coord.p / coord.q), lod);
}
vec4 shadow2DProjLod (sampler2DShadow sampler, vec4 coord, float lod) {
return shadow2DLod (sampler, vec3 (coord.s / coord.q, coord.t / coord.q, coord.p / coord.q),
lod);
}
vec4 shadow2DLod (sampler2DShadow sampler, vec3 coord, float lod) {
// XXX:
return vec4 (0.0);
}
vec4 shadow1DProjLod (sampler1DShadow sampler, vec4 coord, float lod) {
vec3 u;
u.s = coord.s / coord.q;
u.t = 0.0;
u.p = coord.p / coord.q;
return shadow1DLod (sampler, u, lod);
}
vec4 shadow2DProjLod (sampler2DShadow sampler, vec4 coord, float lod) {
vec3 u;
u.s = coord.s / coord.q;
u.t = coord.t / coord.q;
u.p = coord.p / coord.q;
return shadow2DLod (sampler, u, lod);
}

137
src/mesa/shader/slang/library/slang_vertex_builtin_gc.h
View file

@ -1,66 +1,71 @@
/* DO NOT EDIT - THIS FILE AUTOMATICALLY GENERATED FROM THE FOLLOWING FILE: */
/* slang_vertex_builtin.gc */
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/* DO NOT EDIT - THIS FILE AUTOMATICALLY GENERATED FROM THE FOLLOWING FILE: */
/* slang_vertex_builtin.gc */
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116,101,120,116,117,114,101,49,68,76,111,100,0,1,0,0,16,115,97,109,112,108,101,114,0,0,1,0,0,9,99,
111,111,114,100,0,0,1,0,0,9,108,111,100,0,0,0,1,8,58,118,101,99,52,0,17,48,0,48,0,0,0,0,0,0,1,0,12,
0,116,101,120,116,117,114,101,49,68,80,114,111,106,76,111,100,0,1,0,0,16,115,97,109,112,108,101,
114,0,0,1,0,0,10,99,111,111,114,100,0,0,1,0,0,9,108,111,100,0,0,0,1,8,58,116,101,120,116,117,114,
101,49,68,76,111,100,0,18,115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,0,59,115,0,18,99,
111,111,114,100,0,59,116,0,49,0,18,108,111,100,0,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,49,
68,80,114,111,106,76,111,100,0,1,0,0,16,115,97,109,112,108,101,114,0,0,1,0,0,12,99,111,111,114,100,
0,0,1,0,0,9,108,111,100,0,0,0,1,8,58,116,101,120,116,117,114,101,49,68,76,111,100,0,18,115,97,109,
112,108,101,114,0,0,18,99,111,111,114,100,0,59,115,0,18,99,111,111,114,100,0,59,113,0,49,0,18,108,
111,100,0,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,50,68,76,111,100,0,1,0,0,17,115,97,109,112,
108,101,114,0,0,1,0,0,10,99,111,111,114,100,0,0,1,0,0,9,108,111,100,0,0,0,1,8,58,118,101,99,52,0,
17,48,0,48,0,0,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,50,68,80,114,111,106,76,111,100,0,1,0,
0,17,115,97,109,112,108,101,114,0,0,1,0,0,11,99,111,111,114,100,0,0,1,0,0,9,108,111,100,0,0,0,1,3,
2,0,10,1,117,0,0,0,9,18,117,0,59,115,0,18,99,111,111,114,100,0,59,115,0,18,99,111,111,114,100,0,59,
112,0,49,20,0,9,18,117,0,59,116,0,18,99,111,111,114,100,0,59,116,0,18,99,111,111,114,100,0,59,112,
0,49,20,0,8,58,116,101,120,116,117,114,101,50,68,76,111,100,0,18,115,97,109,112,108,101,114,0,0,18,
117,0,0,18,108,111,100,0,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,50,68,80,114,111,106,76,111,
100,0,1,0,0,17,115,97,109,112,108,101,114,0,0,1,0,0,12,99,111,111,114,100,0,0,1,0,0,9,108,111,100,
0,0,0,1,3,2,0,10,1,117,0,0,0,9,18,117,0,59,115,0,18,99,111,111,114,100,0,59,115,0,18,99,111,111,
114,100,0,59,113,0,49,20,0,9,18,117,0,59,116,0,18,99,111,111,114,100,0,59,116,0,18,99,111,111,114,
100,0,59,113,0,49,20,0,8,58,116,101,120,116,117,114,101,50,68,76,111,100,0,18,115,97,109,112,108,
101,114,0,0,18,117,0,0,18,108,111,100,0,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,51,68,76,111,
100,0,1,0,0,18,115,97,109,112,108,101,114,0,0,1,0,0,11,99,111,111,114,100,0,0,1,0,0,9,108,111,100,
0,0,0,1,8,58,118,101,99,52,0,17,48,0,48,0,0,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,51,68,80,
114,111,106,76,111,100,0,1,0,0,18,115,97,109,112,108,101,114,0,0,1,0,0,12,99,111,111,114,100,0,0,1,
0,0,9,108,111,100,0,0,0,1,3,2,0,11,1,117,0,0,0,9,18,117,0,59,115,0,18,99,111,111,114,100,0,59,115,
0,18,99,111,111,114,100,0,59,113,0,49,20,0,9,18,117,0,59,116,0,18,99,111,111,114,100,0,59,116,0,18,
99,111,111,114,100,0,59,113,0,49,20,0,9,18,117,0,59,112,0,18,99,111,111,114,100,0,59,112,0,18,99,
111,111,114,100,0,59,113,0,49,20,0,8,58,116,101,120,116,117,114,101,51,68,76,111,100,0,18,115,97,
109,112,108,101,114,0,0,18,117,0,0,18,108,111,100,0,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,
67,117,98,101,76,111,100,0,1,0,0,19,115,97,109,112,108,101,114,0,0,1,0,0,11,99,111,111,114,100,0,0,
1,0,0,9,108,111,100,0,0,0,1,8,58,118,101,99,52,0,17,48,0,48,0,0,0,0,0,0,1,0,12,0,115,104,97,100,
111,119,49,68,76,111,100,0,1,0,0,20,115,97,109,112,108,101,114,0,0,1,0,0,11,99,111,111,114,100,0,0,
1,0,0,9,108,111,100,0,0,0,1,8,58,118,101,99,52,0,17,48,0,48,0,0,0,0,0,0,1,0,12,0,115,104,97,100,
111,119,50,68,76,111,100,0,1,0,0,21,115,97,109,112,108,101,114,0,0,1,0,0,11,99,111,111,114,100,0,0,
1,0,0,9,108,111,100,0,0,0,1,8,58,118,101,99,52,0,17,48,0,48,0,0,0,0,0,0,1,0,12,0,115,104,97,100,
111,119,49,68,80,114,111,106,76,111,100,0,1,0,0,20,115,97,109,112,108,101,114,0,0,1,0,0,12,99,111,
111,114,100,0,0,1,0,0,9,108,111,100,0,0,0,1,3,2,0,11,1,117,0,0,0,9,18,117,0,59,115,0,18,99,111,111,
114,100,0,59,115,0,18,99,111,111,114,100,0,59,113,0,49,20,0,9,18,117,0,59,116,0,17,48,0,48,0,0,20,
0,9,18,117,0,59,112,0,18,99,111,111,114,100,0,59,112,0,18,99,111,111,114,100,0,59,113,0,49,20,0,8,
58,115,104,97,100,111,119,49,68,76,111,100,0,18,115,97,109,112,108,101,114,0,0,18,117,0,0,18,108,
111,100,0,0,0,0,0,1,0,12,0,115,104,97,100,111,119,50,68,80,114,111,106,76,111,100,0,1,0,0,21,115,
97,109,112,108,101,114,0,0,1,0,0,12,99,111,111,114,100,0,0,1,0,0,9,108,111,100,0,0,0,1,3,2,0,11,1,
117,0,0,0,9,18,117,0,59,115,0,18,99,111,111,114,100,0,59,115,0,18,99,111,111,114,100,0,59,113,0,49,
20,0,9,18,117,0,59,116,0,18,99,111,111,114,100,0,59,116,0,18,99,111,111,114,100,0,59,113,0,49,20,0,
9,18,117,0,59,112,0,18,99,111,111,114,100,0,59,112,0,18,99,111,111,114,100,0,59,113,0,49,20,0,8,58,
115,104,97,100,111,119,50,68,76,111,100,0,18,115,97,109,112,108,101,114,0,0,18,117,0,0,18,108,111,
100,0,0,0,0,0,0