* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
-//
-// TODO:
-// - implement dFdx, dFdy,
-//
-
//
// From Shader Spec, ver. 1.10, rev. 59
//
varying vec4 gl_TexCoord[gl_MaxTextureCoords];
varying float gl_FogFragCoord;
-//
-// 8.7 Texture Lookup Functions
-//
-vec4 texture1D (sampler1D sampler, float coord, float bias) {
- vec4 texel;
- __asm vec4_tex1d texel, sampler, coord, bias;
- return texel;
+
+//// 8.7 Texture Lookup Functions (with bias)
+
+vec4 texture1D(const sampler1D sampler, const float coord, const float bias)
+{
+ vec4 coord4;
+ coord4.x = coord;
+ coord4.w = bias;
+ __asm vec4_texb1d __retVal, sampler, coord4;
}
-vec4 texture1DProj (sampler1D sampler, vec2 coord, float bias) {
- return texture1D (sampler, coord.s / coord.t, bias);
+vec4 texture1DProj(const sampler1D sampler, const vec2 coord, const float bias)
+{
+ // do projection here (there's no vec4_texbp1d instruction)
+ vec4 pcoord;
+ pcoord.x = coord.x / coord.y;
+ pcoord.w = bias;
+ __asm vec4_texb1d __retVal, sampler, pcoord;
}
-vec4 texture1DProj (sampler1D sampler, vec4 coord, float bias) {
- return texture1D (sampler, coord.s / coord.q, bias);
+vec4 texture1DProj(const sampler1D sampler, const vec4 coord, const float bias)
+{
+ // do projection here (there's no vec4_texbp1d instruction)
+ vec4 pcoord;
+ pcoord.x = coord.x / coord.z;
+ pcoord.w = bias;
+ __asm vec4_texb1d __retVal, sampler, pcoord;
}
-vec4 texture2D (sampler2D sampler, vec2 coord, float bias) {
- vec4 texel;
- __asm vec4_tex2d texel, sampler, coord, bias;
- return texel;
+
+vec4 texture2D(const sampler2D sampler, const vec2 coord, const float bias)
+{
+ vec4 coord4;
+ coord4.xy = coord.xy;
+ coord4.w = bias;
+ __asm vec4_texb2d __retVal, sampler, coord4;
}
-vec4 texture2DProj (sampler2D sampler, vec3 coord, float bias) {
- return texture2D (sampler, vec2 (coord.s / coord.p, coord.t / coord.p), bias);
+vec4 texture2DProj(const sampler2D sampler, const vec3 coord, const float bias)
+{
+ // do projection here (there's no vec4_texbp2d instruction)
+ vec4 pcoord;
+ pcoord.xy = coord.xy / coord.z;
+ pcoord.w = bias;
+ __asm vec4_texb2d __retVal, sampler, pcoord;
}
-vec4 texture2DProj (sampler2D sampler, vec4 coord, float bias) {
- return texture2D (sampler, vec2 (coord.s / coord.q, coord.t / coord.q), bias);
+vec4 texture2DProj(const sampler2D sampler, const vec4 coord, const float bias)
+{
+ // do projection here (there's no vec4_texbp2d instruction)
+ vec4 pcoord;
+ pcoord.xy = coord.xy / coord.w;
+ pcoord.w = bias;
+ __asm vec4_texb2d __retVal, sampler, pcoord;
}
-vec4 texture3D (sampler3D sampler, vec3 coord, float bias) {
- vec4 texel;
- __asm vec4_tex3d texel, sampler, coord, bias;
- return texel;
+
+vec4 texture3D(const sampler3D sampler, const vec3 coord, const float bias)
+{
+ vec4 coord4;
+ coord4.xyz = coord.xyz;
+ coord4.w = bias;
+ __asm vec4_texb3d __retVal, sampler, coord4;
}
-vec4 texture3DProj (sampler3D sampler, vec4 coord, float bias) {
- return texture3D (sampler, vec3 (coord.s / coord.q, coord.t / coord.q, coord.p / coord.q), bias);
+vec4 texture3DProj(const sampler3D sampler, const vec4 coord, const float bias)
+{
+ // do projection here (there's no vec4_texbp3d instruction)
+ vec4 pcoord;
+ pcoord.xyz = coord.xyz / coord.w;
+ pcoord.w = bias;
+ __asm vec4_texb3d __retVal, sampler, pcoord;
}
-vec4 textureCube (samplerCube sampler, vec3 coord, float bias) {
- vec4 texel;
- __asm vec4_texcube texel, sampler, coord, bias;
- return texel;
+
+vec4 textureCube(const samplerCube sampler, const vec3 coord, const float bias)
+{
+ vec4 coord4;
+ coord4.xyz = coord;
+ coord4.w = bias;
+ __asm vec4_texcube __retVal, sampler, coord4;
}
-vec4 shadow1D (sampler1DShadow sampler, vec3 coord, float bias) {
- vec4 texel;
- __asm vec4_shad1d texel, sampler, coord, bias;
- return texel;
+
+// For shadow textures, we use the regular tex instructions since they should
+// do the depth comparison step.
+
+vec4 shadow1D(const sampler1DShadow sampler, const vec3 coord, const float bias)
+{
+ vec4 coord4;
+ coord4.xyz = coord;
+ coord4.w = bias;
+ __asm vec4_texb1d __retVal, sampler, coord4;
}
-vec4 shadow1DProj (sampler1DShadow sampler, vec4 coord, float bias) {
- return shadow1D (sampler, vec3 (coord.s / coord.q, 0.0, coord.p / coord.q), bias);
+vec4 shadow1DProj(const sampler1DShadow sampler, const vec4 coord, const float bias)
+{
+ vec4 pcoord;
+ pcoord.x = coord.x / coord.w;
+ pcoord.z = coord.z;
+ pcoord.w = bias;
+ __asm vec4_texb1d __retVal, sampler, pcoord;
}
-vec4 shadow2D (sampler2DShadow sampler, vec3 coord, float bias) {
- vec4 texel;
- __asm vec4_shad2d texel, sampler, coord, bias;
- return texel;
+vec4 shadow2D(const sampler2DShadow sampler, const vec3 coord, const float bias)
+{
+ vec4 coord4;
+ coord4.xyz = coord;
+ coord4.w = bias;
+ __asm vec4_texb2d __retVal, sampler, coord4;
}
-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 shadow2DProj(const sampler2DShadow sampler, const vec4 coord, const float bias)
+{
+ vec4 pcoord;
+ pcoord.xy = coord.xy / coord.w;
+ pcoord.z = coord.z;
+ pcoord.w = bias;
+ __asm vec4_texb2d __retVal, sampler, pcoord;
}
+
+
+
+
//
// 8.8 Fragment Processing Functions
//
-float dFdx (float p) {
- // XXX:
- return 0.001;
+float dFdx(const float p)
+{
+ __asm vec4_ddx __retVal.x, p.xxxx;
}
-vec2 dFdx (vec2 p) {
- // XXX:
- return vec2 (0.001);
+vec2 dFdx(const vec2 p)
+{
+ __asm vec4_ddx __retVal.xy, p.xyyy;
}
-vec3 dFdx (vec3 p) {
- // XXX:
- return vec3 (0.001);
+vec3 dFdx(const vec3 p)
+{
+ __asm vec4_ddx __retVal.xyz, p.xyzz;
}
-vec4 dFdx (vec4 p) {
- // XXX:
- return vec4 (0.001);
+vec4 dFdx(const vec4 p)
+{
+ __asm vec4_ddx __retVal, p;
}
-float dFdy (float p) {
- // XXX:
- return 0.001;
+float dFdy(const float p)
+{
+ __asm vec4_ddy __retVal.x, p.xxxx;
}
-vec2 dFdy (vec2 p) {
- // XXX:
- return vec2 (0.001);
+vec2 dFdy(const vec2 p)
+{
+ __asm vec4_ddy __retVal.xy, p.xyyy;
}
-vec3 dFdy (vec3 p) {
- // XXX:
- return vec3 (0.001);
+vec3 dFdy(const vec3 p)
+{
+ __asm vec4_ddy __retVal.xyz, p.xyzz;
}
-vec4 dFdy (vec4 p) {
- // XXX:
- return vec4 (0.001);
+vec4 dFdy(const vec4 p)
+{
+ __asm vec4_ddy __retVal, p;
}
-float fwidth (float p) {
- return abs (dFdx (p)) + abs (dFdy (p));
+float fwidth (const float p)
+{
+ // XXX hand-write with __asm
+ return abs(dFdx(p)) + abs(dFdy(p));
}
-vec2 fwidth (vec2 p) {
- return abs (dFdx (p)) + abs (dFdy (p));
+vec2 fwidth(const vec2 p)
+{
+ // XXX hand-write with __asm
+ return abs(dFdx(p)) + abs(dFdy(p));
}
-vec3 fwidth (vec3 p) {
- return abs (dFdx (p)) + abs (dFdy (p));
+vec3 fwidth(const vec3 p)
+{
+ // XXX hand-write with __asm
+ return abs(dFdx(p)) + abs(dFdy(p));
}
-vec4 fwidth (vec4 p) {
- return abs (dFdx (p)) + abs (dFdy (p));
+vec4 fwidth(const vec4 p)
+{
+ // XXX hand-write with __asm
+ return abs(dFdx(p)) + abs(dFdy(p));
}
projects / mesa.git / blobdiff