diff options
author | Brian <[email protected]> | 2007-02-24 17:00:50 -0700 |
---|---|---|
committer | Brian <[email protected]> | 2007-02-24 17:00:50 -0700 |
commit | fbc4929185ca1dc7d729ec737095ef0895f5b570 (patch) | |
tree | 703c6ff131064969816288caf75f21a065263682 /src/mesa/shader/prog_statevars.c | |
parent | efcfdbd4d16071088e60a59cb966abd730d9d111 (diff) |
add missing code for newer STATE_INTERNAL items
Diffstat (limited to 'src/mesa/shader/prog_statevars.c')
-rw-r--r-- | src/mesa/shader/prog_statevars.c | 60 |
1 files changed, 44 insertions, 16 deletions
diff --git a/src/mesa/shader/prog_statevars.c b/src/mesa/shader/prog_statevars.c index 1f5d5598e86..8b4903ea012 100644 --- a/src/mesa/shader/prog_statevars.c +++ b/src/mesa/shader/prog_statevars.c @@ -396,23 +396,51 @@ _mesa_fetch_state(GLcontext *ctx, const gl_state_index state[], return; case STATE_INTERNAL: - { - switch (state[1]) { - case STATE_TEXRECT_SCALE: { - const int unit = (int) state[2]; - const struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current; - if (texObj) { - struct gl_texture_image *texImage = texObj->Image[0][0]; - ASSIGN_4V(value, 1.0 / texImage->Width, 1.0 / texImage->Height, 0, 1); - } - break; - } - default: - /* unknown state indexes are silently ignored - * should be handled by the driver. - */ - return; + switch (state[1]) { + case STATE_NORMAL_SCALE: + ASSIGN_4V(value, ctx->_ModelViewInvScale, 0, 0, 1); + return; + case STATE_TEXRECT_SCALE: + { + const int unit = (int) state[2]; + const struct gl_texture_object *texObj + = ctx->Texture.Unit[unit]._Current; + if (texObj) { + struct gl_texture_image *texImage = texObj->Image[0][0]; + ASSIGN_4V(value, 1.0 / texImage->Width, + 1.0 / texImage->Height, + 0.0, 1.0); + } } + return; + case STATE_FOG_PARAMS_OPTIMIZED: + /* for simpler per-vertex/pixel fog calcs. POW (for EXP/EXP2 fog) + * might be more expensive than EX2 on some hw, plus it needs + * another constant (e) anyway. Linear fog can now be done with a + * single MAD. + * linear: fogcoord * -1/(end-start) + end/(end-start) + * exp: 2^-(density/ln(2) * fogcoord) + * exp2: 2^-((density/(ln(2)^2) * fogcoord)^2) + */ + value[0] = -1.0F / (ctx->Fog.End - ctx->Fog.Start); + value[1] = ctx->Fog.End / (ctx->Fog.End - ctx->Fog.Start); + value[2] = ctx->Fog.Density * ONE_DIV_LN2; + value[3] = ctx->Fog.Density * ONE_DIV_SQRT_LN2; + return; + case STATE_SPOT_DIR_NORMALIZED: { + /* here, state[2] is the light number */ + /* pre-normalize spot dir */ + const GLuint ln = (GLuint) state[2]; + COPY_3V(value, ctx->Light.Light[ln].EyeDirection); + NORMALIZE_3FV(value); + value[3] = ctx->Light.Light[ln]._CosCutoff; + return; + } + default: + /* unknown state indexes are silently ignored + * should be handled by the driver. + */ + return; } return; |