diff options
author | Brian <brian.paul@tungstengraphics.com> | 2007-07-24 09:17:59 -0600 |
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committer | Brian <brian.paul@tungstengraphics.com> | 2007-07-24 09:17:59 -0600 |
commit | 5b737b7df21b418c71f71af987a20c495b1133f8 (patch) | |
tree | 6aa3a54cb5d3c43f789488147f3b61b56e09c5fc /src/mesa/main/image.c | |
parent | f0636d9653d142bdf71475d2d2066f5c7c436978 (diff) | |
parent | 98eaf5503d0d7c4f18fab6910a08aba7a3d08639 (diff) |
Merge branch 'softpipe_0_1_branch' of git+ssh://brianp@git.freedesktop.org/git/mesa/mesa into softpipe_0_1_branch
Diffstat (limited to 'src/mesa/main/image.c')
-rw-r--r-- | src/mesa/main/image.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/src/mesa/main/image.c b/src/mesa/main/image.c index e874719e64..ba46cdc1b1 100644 --- a/src/mesa/main/image.c +++ b/src/mesa/main/image.c @@ -3882,9 +3882,19 @@ _mesa_pack_stencil_span( const GLcontext *ctx, GLuint n, } \ } while (0) + +/** + * Unpack a row of depth/z values from memory, returning GLushort, GLuint + * or GLfloat values. + * The glPixelTransfer (scale/bias) params will be applied. + * + * \param dstType one of GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, GL_FLOAT + * \param depthMax max value for returned GLushort or GLuint values + * (ignored for GLfloat). + */ void _mesa_unpack_depth_span( const GLcontext *ctx, GLuint n, - GLenum dstType, GLvoid *dest, GLfloat depthScale, + GLenum dstType, GLvoid *dest, GLuint depthMax, GLenum srcType, const GLvoid *source, const struct gl_pixelstore_attrib *srcPacking ) { @@ -3907,7 +3917,9 @@ _mesa_unpack_depth_span( const GLcontext *ctx, GLuint n, } return; } - if (srcType == GL_UNSIGNED_SHORT && dstType == GL_UNSIGNED_INT) { + if (srcType == GL_UNSIGNED_SHORT + && dstType == GL_UNSIGNED_INT + && depthMax == 0xffffffff) { const GLushort *src = (const GLushort *) source; GLuint *dst = (GLuint *) dest; GLuint i; @@ -3955,7 +3967,7 @@ _mesa_unpack_depth_span( const GLcontext *ctx, GLuint n, break; case GL_UNSIGNED_INT_24_8_EXT: /* GL_EXT_packed_depth_stencil */ if (dstType == GL_UNSIGNED_INT && - depthScale == (GLfloat) 0xffffff && + depthMax == 0xffffff && ctx->Pixel.DepthScale == 1.0 && ctx->Pixel.DepthBias == 0.0) { const GLuint *src = (const GLuint *) source; @@ -4033,16 +4045,16 @@ _mesa_unpack_depth_span( const GLcontext *ctx, GLuint n, if (dstType == GL_UNSIGNED_INT) { GLuint *zValues = (GLuint *) dest; GLuint i; - if (depthScale <= (GLfloat) 0xffffff) { + if (depthMax <= 0xffffff) { /* no overflow worries */ for (i = 0; i < n; i++) { - zValues[i] = (GLuint) (depthValues[i] * depthScale); + zValues[i] = (GLuint) (depthValues[i] * (GLfloat) depthMax); } } else { /* need to use double precision to prevent overflow problems */ for (i = 0; i < n; i++) { - GLdouble z = depthValues[i] * depthScale; + GLdouble z = depthValues[i] * (GLfloat) depthMax; if (z >= (GLdouble) 0xffffffff) zValues[i] = 0xffffffff; else @@ -4053,14 +4065,14 @@ _mesa_unpack_depth_span( const GLcontext *ctx, GLuint n, else if (dstType == GL_UNSIGNED_SHORT) { GLushort *zValues = (GLushort *) dest; GLuint i; - ASSERT(depthScale <= 65535.0); + ASSERT(depthMax <= 0xffff); for (i = 0; i < n; i++) { - zValues[i] = (GLushort) (depthValues[i] * depthScale); + zValues[i] = (GLushort) (depthValues[i] * (GLfloat) depthMax); } } else { ASSERT(dstType == GL_FLOAT); - ASSERT(depthScale == 1.0F); + /*ASSERT(depthMax == 1.0F);*/ } } |