diff options
| author | Owen W. Taylor <otaylor@fishsoup.net> | 2009-05-08 18:58:41 -0400 |
|---|---|---|
| committer | Alex Deucher <alexdeucher@gmail.com> | 2009-05-13 18:57:47 -0400 |
| commit | 038f0bf5916df5bae1145d234589e5fd528bb7fa (patch) | |
| tree | f6ad896185b4b55787c40997eb57482aaf1475b7 /src/mesa/drivers/dri/r300 | |
| parent | c514c1f99493147bbba7a1dbe157c0492f4cf2eb (diff) | |
Remove subpixel offset from viewport
Remove an eigth-pixel offset of the viewport inherited from
R100 code. This seems not to be necessary and causes blurring
when sampling textures 1:1.
https://bugs.freedesktop.org/show_bug.cgi?id=20340
Diffstat (limited to 'src/mesa/drivers/dri/r300')
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_state.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.c index 301ede3aed..b82399574a 100644 --- a/src/mesa/drivers/dri/r300/r300_state.c +++ b/src/mesa/drivers/dri/r300/r300_state.c @@ -923,12 +923,6 @@ static void r300StencilOpSeparate(GLcontext * ctx, GLenum face, * Window position and viewport transformation */ -/* - * To correctly position primitives: - */ -#define SUBPIXEL_X 0.125 -#define SUBPIXEL_Y 0.125 - static void r300UpdateWindow(GLcontext * ctx) { r300ContextPtr rmesa = R300_CONTEXT(ctx); @@ -949,9 +943,9 @@ static void r300UpdateWindow(GLcontext * ctx) } GLfloat sx = v[MAT_SX]; - GLfloat tx = v[MAT_TX] + xoffset + SUBPIXEL_X; + GLfloat tx = v[MAT_TX] + xoffset; GLfloat sy = v[MAT_SY] * y_scale; - GLfloat ty = (v[MAT_TY] * y_scale) + y_bias + SUBPIXEL_Y; + GLfloat ty = (v[MAT_TY] * y_scale) + y_bias; GLfloat sz = v[MAT_SZ] * depthScale; GLfloat tz = v[MAT_TZ] * depthScale; @@ -990,8 +984,8 @@ void r300UpdateViewportOffset(GLcontext * ctx) GLfloat yoffset = (GLfloat) dPriv->y + dPriv->h; const GLfloat *v = ctx->Viewport._WindowMap.m; - GLfloat tx = v[MAT_TX] + xoffset + SUBPIXEL_X; - GLfloat ty = (-v[MAT_TY]) + yoffset + SUBPIXEL_Y; + GLfloat tx = v[MAT_TX] + xoffset; + GLfloat ty = (-v[MAT_TY]) + yoffset; if (rmesa->hw.vpt.cmd[R300_VPT_XOFFSET] != r300PackFloat32(tx) || rmesa->hw.vpt.cmd[R300_VPT_YOFFSET] != r300PackFloat32(ty)) { |