diff options
author | Brian Paul <[email protected]> | 2005-10-01 16:02:38 +0000 |
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committer | Brian Paul <[email protected]> | 2005-10-01 16:02:38 +0000 |
commit | 31340f6645b34314469894c02b1df88886811e85 (patch) | |
tree | cf77023da750c500709634a23331a6230c9ae68c | |
parent | 3d61c2e778e5592a52eef21fab6cc301b54f449e (diff) |
added _mesa_pack_depth_stencil_span()
-rw-r--r-- | src/mesa/main/image.c | 47 | ||||
-rw-r--r-- | src/mesa/main/image.h | 7 |
2 files changed, 54 insertions, 0 deletions
diff --git a/src/mesa/main/image.c b/src/mesa/main/image.c index b6841d7a136..3523505cfcb 100644 --- a/src/mesa/main/image.c +++ b/src/mesa/main/image.c @@ -4084,6 +4084,53 @@ _mesa_pack_depth_span( const GLcontext *ctx, GLuint n, GLvoid *dest, } + +/** + * Pack depth and stencil values as GL_DEPTH_STENCIL/GL_UNSIGNED_INT_24_8. + */ +void +_mesa_pack_depth_stencil_span(const GLcontext *ctx, GLuint n, GLuint *dest, + const GLfloat *depthVals, + const GLstencil *stencilVals, + const struct gl_pixelstore_attrib *dstPacking) +{ + GLfloat depthCopy[MAX_WIDTH]; + GLstencil stencilCopy[MAX_WIDTH]; + GLuint i; + + ASSERT(n <= MAX_WIDTH); + + if (ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0) { + _mesa_memcpy(depthCopy, depthVals, n * sizeof(GLfloat)); + _mesa_scale_and_bias_depth(ctx, n, depthCopy); + depthVals = depthCopy; + } + + if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset) { + _mesa_memcpy(stencilCopy, stencilVals, n * sizeof(GLstencil)); + _mesa_shift_and_offset_stencil(ctx, n, stencilCopy); + stencilVals = stencilCopy; + } + if (ctx->Pixel.MapStencilFlag) { + if (stencilVals != stencilCopy) + _mesa_memcpy(stencilCopy, stencilVals, n * sizeof(GLstencil)); + _mesa_map_stencil(ctx, n, stencilCopy); + stencilVals = stencilCopy; + } + + for (i = 0; i < n; i++) { + GLuint z = (GLuint) (depthVals[i] * 0xffffff); + dest[i] = (z << 8) | (stencilVals[i] & 0xff); + } + + if (dstPacking->SwapBytes) { + _mesa_swap4(dest, n); + } +} + + + + /** * Unpack image data. Apply byte swapping, byte flipping (bitmap). * Return all image data in a contiguous block. This is used when we diff --git a/src/mesa/main/image.h b/src/mesa/main/image.h index 74be4aebaa0..e31959565af 100644 --- a/src/mesa/main/image.h +++ b/src/mesa/main/image.h @@ -189,6 +189,13 @@ _mesa_pack_depth_span( const GLcontext *ctx, GLuint n, GLvoid *dest, const struct gl_pixelstore_attrib *dstPacking ); +extern void +_mesa_pack_depth_stencil_span(const GLcontext *ctx, GLuint n, GLuint *dest, + const GLfloat *depthVals, + const GLstencil *stencilVals, + const struct gl_pixelstore_attrib *dstPacking); + + extern void * _mesa_unpack_image( GLuint dimensions, GLsizei width, GLsizei height, GLsizei depth, |