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softgpu: Round tex coords properly for nearest.

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Fixes off-by-one errors in rendering certain textures.
This commit is contained in:
Unknown W. Brackets committed 2015-12-20 17:03:09 -08:00
1 parent 39d1dd3a01
commit 063a980094
1 file changed
+11 -11
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GPU/Software/Rasterizer.cpp
+11 -11
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@@ -114,11 +114,11 @@ static inline u8 ClampFogDepth(float fogdepth) {
static inline void GetTexelCoordinates(int level, float s, float t, int& out_u, int& out_v)
{
int width = 1 << (gstate.texsize[level] & 0xf);
int height = 1 << ((gstate.texsize[level]>>8) & 0xf);
int width = gstate.getTextureWidth(level);
int height = gstate.getTextureHeight(level);
int u = (int)(s * width);
int v = (int)(t * height);
int u = (int)(s * width + 0.375f);
int v = (int)(t * height + 0.375f);
if (gstate.isTexCoordClampedS()) {
if (u >= width - 1)
@@ -144,8 +144,8 @@ static inline void GetTexelCoordinates(int level, float s, float t, int& out_u,
static inline void GetTexelCoordinatesQuad(int level, float in_s, float in_t, int u[4], int v[4], int &frac_u, int &frac_v)
{
// 8 bits of fractional UV
int width = 1 << (gstate.texsize[level] & 0xf);
int height = 1 << ((gstate.texsize[level]>>8) & 0xf);
int width = gstate.getTextureWidth(level);
int height = gstate.getTextureHeight(level);
int base_u = in_s * width * 256;
int base_v = in_t * height * 256;
@@ -190,9 +190,9 @@ static inline void GetTexelCoordinatesQuad(int level, float in_s, float in_t, in
static inline void GetTexelCoordinatesThrough(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 = 1 << (gstate.texsize[level] & 0xf);
int height = 1 << ((gstate.texsize[level]>>8) & 0xf);
// 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));
@@ -202,8 +202,8 @@ static inline void GetTexelCoordinatesThrough(int level, int s, int t, int& u, i
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 = 1 << (gstate.texsize[level] & 0xf);
int height = 1 << ((gstate.texsize[level] >> 8) & 0xf);
int width = gstate.getTextureWidth(level);
int height = gstate.getTextureHeight(level);
// Wrap!
for (int i = 0; i < 4; i++) {