diff options
| author | Ian Romanick <idr@freedesktop.org> | 2009-01-09 15:43:17 -0800 |
|---|---|---|
| committer | Ian Romanick <ian.d.romanick@intel.com> | 2009-01-23 09:49:29 -0800 |
| commit | dde7cb962860e72e1bf3175069767358cc5b3f3c (patch) | |
| tree | 64ca81d4f544ae7f28618c919af58a844f246de9 /src/mesa/drivers/dri/r300/r300_state.c | |
| parent | af0e6336e9d7dc19d74950ce13b33e1fa1b2081d (diff) | |
Track two sets of back-face stencil state
Track separate back-face stencil state for OpenGL 2.0 /
GL_ATI_separate_stencil and GL_EXT_stencil_two_side. This allows all
three to be enabled in a driver. One set of state is set via the 2.0
or ATI functions and is used when STENCIL_TEST_TWO_SIDE_EXT is
disabled. The other is set by StencilFunc and StencilOp when the
active stencil face is set to BACK. The GL_EXT_stencil_two_side spec has
more details.
http://opengl.org/registry/specs/EXT/stencil_two_side.txt
Diffstat (limited to 'src/mesa/drivers/dri/r300/r300_state.c')
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_state.c | 40 |
1 files changed, 12 insertions, 28 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.c index a63dbac343..d02034f039 100644 --- a/src/mesa/drivers/dri/r300/r300_state.c +++ b/src/mesa/drivers/dri/r300/r300_state.c @@ -974,15 +974,9 @@ static void r300StencilFuncSeparate(GLcontext * ctx, GLenum face, { r300ContextPtr rmesa = R300_CONTEXT(ctx); GLuint refmask = - (((ctx->Stencil. - Ref[0] & 0xff) << R300_STENCILREF_SHIFT) | ((ctx-> - Stencil. - ValueMask - [0] & - 0xff) - << - R300_STENCILMASK_SHIFT)); - + ((ctx->Stencil.Ref[0] & 0xff) << R300_STENCILREF_SHIFT) + | ((ctx->Stencil.ValueMask[0] & 0xff) << R300_STENCILMASK_SHIFT); + const unsigned back = ctx->Stencil._BackFace; GLuint flag; R300_STATECHANGE(rmesa, zs); @@ -1000,8 +994,7 @@ static void r300StencilFuncSeparate(GLcontext * ctx, GLenum face, rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |= (flag << R300_S_FRONT_FUNC_SHIFT); - if (ctx->Stencil._TestTwoSide) - flag = translate_func(ctx->Stencil.Function[1]); + flag = translate_func(ctx->Stencil.Function[back]); rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |= (flag << R300_S_BACK_FUNC_SHIFT); @@ -1026,6 +1019,7 @@ static void r300StencilOpSeparate(GLcontext * ctx, GLenum face, GLenum fail, GLenum zfail, GLenum zpass) { r300ContextPtr rmesa = R300_CONTEXT(ctx); + const unsigned back = ctx->Stencil._BackFace; R300_STATECHANGE(rmesa, zs); /* It is easier to mask what's left.. */ @@ -1042,23 +1036,13 @@ static void r300StencilOpSeparate(GLcontext * ctx, GLenum face, | (translate_stencil_op(ctx->Stencil.ZPassFunc[0]) << R300_S_FRONT_ZPASS_OP_SHIFT); - if (ctx->Stencil._TestTwoSide) { - rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |= - (translate_stencil_op(ctx->Stencil.FailFunc[1]) << - R300_S_BACK_SFAIL_OP_SHIFT) - | (translate_stencil_op(ctx->Stencil.ZFailFunc[1]) << - R300_S_BACK_ZFAIL_OP_SHIFT) - | (translate_stencil_op(ctx->Stencil.ZPassFunc[1]) << - R300_S_BACK_ZPASS_OP_SHIFT); - } else { - rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |= - (translate_stencil_op(ctx->Stencil.FailFunc[0]) << - R300_S_BACK_SFAIL_OP_SHIFT) - | (translate_stencil_op(ctx->Stencil.ZFailFunc[0]) << - R300_S_BACK_ZFAIL_OP_SHIFT) - | (translate_stencil_op(ctx->Stencil.ZPassFunc[0]) << - R300_S_BACK_ZPASS_OP_SHIFT); - } + rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |= + (translate_stencil_op(ctx->Stencil.FailFunc[back]) << + R300_S_BACK_SFAIL_OP_SHIFT) + | (translate_stencil_op(ctx->Stencil.ZFailFunc[back]) << + R300_S_BACK_ZFAIL_OP_SHIFT) + | (translate_stencil_op(ctx->Stencil.ZPassFunc[back]) << + R300_S_BACK_ZPASS_OP_SHIFT); } /* ============================================================= |