diff options
| author | Roland Scheidegger <rscheidegger@gmx.ch> | 2006-10-25 12:14:26 +0000 |
|---|---|---|
| committer | Roland Scheidegger <rscheidegger@gmx.ch> | 2006-10-25 12:14:26 +0000 |
| commit | e9b923182ed8738fe5eb8bea1d688a6198db346e (patch) | |
| tree | 6c8302b52351af3f86eff12bf72b65885d8eef6d /src/mesa/drivers/dri/r200 | |
| parent | fc606f7db9072d4f40081aea8f92f1d4489a5115 (diff) | |
change some bogus comments regarding the base e exponential function used for fog in vertex programs.
Diffstat (limited to 'src/mesa/drivers/dri/r200')
| -rw-r--r-- | src/mesa/drivers/dri/r200/r200_vertprog.c | 8 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/r200/r200_vertprog.h | 5 |
2 files changed, 6 insertions, 7 deletions
diff --git a/src/mesa/drivers/dri/r200/r200_vertprog.c b/src/mesa/drivers/dri/r200/r200_vertprog.c index e5417db9b7..588e56ec2f 100644 --- a/src/mesa/drivers/dri/r200/r200_vertprog.c +++ b/src/mesa/drivers/dri/r200/r200_vertprog.c @@ -543,8 +543,8 @@ static GLboolean r200_translate_vertex_program(struct r200_vertex_program *vp, G //_mesa_print_program(&mesa_vp->Base); } - /* for fogc, can't change mesa_vp, as it would hose swtnl - maybe should just copy whole prog ? */ + /* for fogc, can't change mesa_vp, as it would hose swtnl, and exp with + base e isn't directly available neither. */ if (mesa_vp->Base.OutputsWritten & VERT_RESULT_FOGC && !vp->fogpidx) { struct gl_program_parameter_list *paramList; GLint tokens[6] = { STATE_FOG_PARAMS, 0, 0, 0, 0, 0 }; @@ -1016,7 +1016,7 @@ else { o_inst->src1 = EASY_VSF_SOURCE(vp->fogpidx, X, X, X, X, PARAM, NONE); o_inst->src2 = UNUSED_SRC_1; o_inst++; - o_inst->op = MAKE_VSF_OP(R200_VPI_OUT_OP_EXP_FOG, + o_inst->op = MAKE_VSF_OP(R200_VPI_OUT_OP_EXP_E, R200_VSF_OUT_CLASS_RESULT_FOGC, VSF_FLAG_X); o_inst->src0 = EASY_VSF_SOURCE(fog_temp_i, X, X, X, X, TMP, ALL); @@ -1038,7 +1038,7 @@ else { o_inst->src1 = EASY_VSF_SOURCE(fog_temp_i, X, X, X, X, TMP, NONE); o_inst->src2 = UNUSED_SRC_1; o_inst++; - o_inst->op = MAKE_VSF_OP(R200_VPI_OUT_OP_EXP_FOG, + o_inst->op = MAKE_VSF_OP(R200_VPI_OUT_OP_EXP_E, R200_VSF_OUT_CLASS_RESULT_FOGC, VSF_FLAG_X); o_inst->src0 = EASY_VSF_SOURCE(fog_temp_i, X, X, X, X, TMP, ALL); diff --git a/src/mesa/drivers/dri/r200/r200_vertprog.h b/src/mesa/drivers/dri/r200/r200_vertprog.h index 38168fb2e7..938237680c 100644 --- a/src/mesa/drivers/dri/r200/r200_vertprog.h +++ b/src/mesa/drivers/dri/r200/r200_vertprog.h @@ -89,9 +89,8 @@ extern void r200SetupVertexProg( GLcontext *ctx ); #define R200_VPI_OUT_OP_EXP (65 << 0) #define R200_VPI_OUT_OP_LOG (66 << 0) -/* this is used for fog. Not sure what's different to normal EX2, - but for fog calcs seems to match sw tnl much more closely. */ -#define R200_VPI_OUT_OP_EXP_FOG (67 << 0) +/* base e exp. Useful for fog. */ +#define R200_VPI_OUT_OP_EXP_E (67 << 0) #define R200_VPI_OUT_OP_LIT (68 << 0) #define R200_VPI_OUT_OP_POW (69 << 0) |