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SoftGPU: Apply clamp/wrap in through.

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This commit is contained in:
Unknown W. Brackets 2017-05-07 14:14:07 -07:00
parent fd4ef48971
commit 7ffc891522
1 changed files with 60 additions and 58 deletions
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118
GPU/Software/Rasterizer.cpp
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@ -168,6 +168,62 @@ static inline u8 ClampFogDepth(float fogdepth) {
return (u8)(u32)(fogdepth * 255.0f);
}
static inline int ClampUV(int v, int height) {
if (v >= height - 1)
return height - 1;
else if (v < 0)
return 0;
return v;
}
static inline int WrapUV(int v, int height) {
return v & (height - 1);
}
template <int N>
static inline void ApplyTexelClamp(int out_u[N], int out_v[N], const int u[N], const int v[N], int width, int height) {
if (gstate.isTexCoordClampedS()) {
for (int i = 0; i < N; ++i) {
out_u[i] = ClampUV(u[i], width);
}
} else {
for (int i = 0; i < N; ++i) {
out_u[i] = WrapUV(u[i], width);
}
}
if (gstate.isTexCoordClampedT()) {
for (int i = 0; i < N; ++i) {
out_v[i] = ClampUV(v[i], height);
}
} else {
for (int i = 0; i < N; ++i) {
out_v[i] = WrapUV(v[i], height);
}
}
}
template <int N>
static inline void ApplyTexelClampQuad(int out_u[N * 4], int out_v[N * 4], const int u[N], const int v[N], int width, int height) {
if (gstate.isTexCoordClampedS()) {
for (int i = 0; i < N * 4; ++i) {
out_u[i] = ClampUV(u[i >> 2] + (i & 1), width);
}
} else {
for (int i = 0; i < N * 4; ++i) {
out_u[i] = WrapUV(u[i >> 2] + (i & 1), width);
}
}
if (gstate.isTexCoordClampedT()) {
for (int i = 0; i < N * 4; ++i) {
out_v[i] = ClampUV(v[i >> 2] + ((i >> 1) & 1), height);
}
} else {
for (int i = 0; i < N * 4; ++i) {
out_v[i] = WrapUV(v[i >> 2] + ((i >> 1) & 1), height);
}
}
}
static inline void GetTexelCoordinates(int level, float s, float t, int& out_u, int& out_v)
{
int width = gstate.getTextureWidth(level);
@ -176,25 +232,7 @@ static inline void GetTexelCoordinates(int level, float s, float t, int& out_u,
int u = (int)(s * width + 0.375f);
int v = (int)(t * height + 0.375f);
if (gstate.isTexCoordClampedS()) {
if (u >= width - 1)
u = width - 1;
else if (u < 0)
u = 0;
} else {
u &= width - 1;
}
if (gstate.isTexCoordClampedT()) {
if (v >= height - 1)
v = height - 1;
else if (v < 0)
v = 0;
} else {
v &= height - 1;
}
out_u = u;
out_v = v;
ApplyTexelClamp<1>(&out_u, &out_v, &u, &v, width, height);
}
static inline void GetTexelCoordinatesQuad(int level, float in_s, float in_t, int u[4], int v[4], int &frac_u, int &frac_v)
@ -213,59 +251,23 @@ static inline void GetTexelCoordinatesQuad(int level, float in_s, float in_t, in
base_v >>= 8;
// Need to generate and individually wrap/clamp the four sample coordinates. Ugh.
if (gstate.isTexCoordClampedS()) {
for (int i = 0; i < 4; i++) {
int temp_u = base_u + (i & 1);
if (temp_u > width - 1)
temp_u = width - 1;
else if (temp_u < 0)
temp_u = 0;
u[i] = temp_u;
}
} else {
for (int i = 0; i < 4; i++) {
u[i] = (base_u + (i & 1)) & (width - 1);
}
}
if (gstate.isTexCoordClampedT()) {
for (int i = 0; i < 4; i++) {
int temp_v = base_v + ((i & 2) >> 1);
if (temp_v > height - 1)
temp_v = height - 1;
else if (temp_v < 0)
temp_v = 0;
v[i] = temp_v;
}
} else {
for (int i = 0; i < 4; i++) {
v[i] = (base_v + ((i & 2) >> 1)) & (height - 1);
}
}
ApplyTexelClampQuad<1>(u, v, &base_u, &base_v, width, height);
}
static inline void GetTexelCoordinatesThrough(int level, int s, int t, int& u, int& v)
{
// TODO: Not actually sure which clamp/wrap modes should be applied. Let's just wrap for now.
int width = gstate.getTextureWidth(level);
int height = gstate.getTextureHeight(level);
// Wrap!
u = ((unsigned int)(s) & (width - 1));
v = ((unsigned int)(t) & (height - 1));
ApplyTexelClamp<1>(&u, &v, &s, &t, width, height);
}
static inline void GetTexelCoordinatesThroughQuad(int level, int s, int t, int *u, int *v)
{
// Not actually sure which clamp/wrap modes should be applied. Let's just wrap for now.
int width = gstate.getTextureWidth(level);
int height = gstate.getTextureHeight(level);
// Wrap!
for (int i = 0; i < 4; i++) {
u[i] = (s + (i & 1)) & (width - 1);
v[i] = (t + ((i & 2) >> 1)) & (height - 1);
}
ApplyTexelClampQuad<1>(u, v, &s, &t, width, height);
}
static inline void GetTextureCoordinates(const VertexData& v0, const VertexData& v1, const VertexData& v2, const Vec4<int> &w0, const Vec4<int> &w1, const Vec4<int> &w2, const Vec4<float> &wsum_recip, Vec4<float> &s, Vec4<float> &t)