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change some bogus comments regarding the base e exponential function used for fog in vertex programs.

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This commit is contained in:
Roland Scheidegger
2006-10-25 12:14:26 +00:00
parent fc606f7db9
commit e9b923182e
2 changed files with 6 additions and 7 deletions
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src/mesa/drivers/dri/r200/r200_vertprog.c
+4 -4
View File
@@ -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);
src/mesa/drivers/dri/r200/r200_vertprog.h
+2 -3
View File
@@ -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)