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| author | Matt Turner <mattst88@gmail.com> | 2015-07-12 18:05:58 -0700 |
|---|---|---|
| committer | Matt Turner <mattst88@gmail.com> | 2015-08-04 10:33:16 -0700 |
| commit | 5f247a9656cb8a0eccdc98ef5911ed15c1248dfb (patch) | |
| tree | 4a1121eba92beefad4097e6679d007a7461efea4 /src/glx/pixelstore.c | |
| parent | 680de24545d23d0c2b699020267ca484f81a04a9 (diff) | |
| download | external_mesa3d-5f247a9656cb8a0eccdc98ef5911ed15c1248dfb.zip external_mesa3d-5f247a9656cb8a0eccdc98ef5911ed15c1248dfb.tar.gz external_mesa3d-5f247a9656cb8a0eccdc98ef5911ed15c1248dfb.tar.bz2 | |
glx: Use _mesa_lroundevenf() in glPixelStoref().
Functional change in which way half-way cases are rounded from towards
positive-infinity to even. The spec says "the passed value is rounded to
the nearest integer". Removes another case of bad half-up rounding.
Diffstat (limited to 'src/glx/pixelstore.c')
| -rw-r--r-- | src/glx/pixelstore.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/src/glx/pixelstore.c b/src/glx/pixelstore.c index 1d776b8..dc33ff3 100644 --- a/src/glx/pixelstore.c +++ b/src/glx/pixelstore.c @@ -30,6 +30,7 @@ #include "glxclient.h" #include "indirect.h" +#include "util/rounding.h" #if !defined(__GNUC__) # define __builtin_expect(x, y) x @@ -77,7 +78,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) switch (pname) { case GL_PACK_ROW_LENGTH: - a = (GLuint) (param + 0.5); + a = _mesa_lroundevenf(param); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; @@ -85,7 +86,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) state->storePack.rowLength = a; break; case GL_PACK_IMAGE_HEIGHT: - a = (GLuint) (param + 0.5); + a = _mesa_lroundevenf(param); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; @@ -93,7 +94,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) state->storePack.imageHeight = a; break; case GL_PACK_SKIP_ROWS: - a = (GLuint) (param + 0.5); + a = _mesa_lroundevenf(param); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; @@ -101,7 +102,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) state->storePack.skipRows = a; break; case GL_PACK_SKIP_PIXELS: - a = (GLuint) (param + 0.5); + a = _mesa_lroundevenf(param); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; @@ -109,7 +110,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) state->storePack.skipPixels = a; break; case GL_PACK_SKIP_IMAGES: - a = (GLuint) (param + 0.5); + a = _mesa_lroundevenf(param); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; @@ -117,7 +118,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) state->storePack.skipImages = a; break; case GL_PACK_ALIGNMENT: - a = (GLint) (param + 0.5); + a = _mesa_lroundevenf(param); switch (a) { case 1: case 2: @@ -138,7 +139,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) break; case GL_UNPACK_ROW_LENGTH: - a = (GLuint) (param + 0.5); + a = _mesa_lroundevenf(param); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; @@ -146,7 +147,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) state->storeUnpack.rowLength = a; break; case GL_UNPACK_IMAGE_HEIGHT: - a = (GLuint) (param + 0.5); + a = _mesa_lroundevenf(param); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; @@ -154,7 +155,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) state->storeUnpack.imageHeight = a; break; case GL_UNPACK_SKIP_ROWS: - a = (GLuint) (param + 0.5); + a = _mesa_lroundevenf(param); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; @@ -162,7 +163,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) state->storeUnpack.skipRows = a; break; case GL_UNPACK_SKIP_PIXELS: - a = (GLuint) (param + 0.5); + a = _mesa_lroundevenf(param); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; @@ -170,7 +171,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) state->storeUnpack.skipPixels = a; break; case GL_UNPACK_SKIP_IMAGES: - a = (GLuint) (param + 0.5); + a = _mesa_lroundevenf(param); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; @@ -178,7 +179,7 @@ __indirect_glPixelStoref(GLenum pname, GLfloat param) state->storeUnpack.skipImages = a; break; case GL_UNPACK_ALIGNMENT: - a = (GLint) (param + 0.5); + a = _mesa_lroundevenf(param); switch (a) { case 1: case 2: |