make offsetmapping bias actually work

(integer division -> float division)

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@11311 d7cf8633-e32d-0410-b094-e92efae38249
::stable-branch::merge=5b06e5ab501c9673ff737aa83dbf8b9dc3fd4ab3

diff --git a/gl_rmain.c b/gl_rmain.c
index fba99ef19a2ede3c7c111e6687aeb25c418d2de9..507a2c7a50a59be605d13c858d5d9caeb2ce0741 100644 (file)
--- a/gl_rmain.c
+++ b/gl_rmain.c
@@ -2631,7 +2631,7 @@ void R_SetupShader_Surface(const vec3_t lightcolorbase, qboolean modellighting,
                                max(1, r_glsl_offsetmapping_reliefmapping_refinesteps.integer)
                        );
                hlslPSSetParameter1f(D3DPSREGISTER_OffsetMapping_LodDistance, r_glsl_offsetmapping_lod_distance.integer)
-               hlslPSSetParameter1f(D3DPSREGISTER_OffsetMapping_Bias, rsurface.texture->offsetbias / 255)
+               hlslPSSetParameter1f(D3DPSREGISTER_OffsetMapping_Bias, rsurface.texture->offsetbias / 255.0f)
                hlslPSSetParameter2f(D3DPSREGISTER_ScreenToDepth, r_refdef.view.viewport.screentodepth[0], r_refdef.view.viewport.screentodepth[1]);
                hlslPSSetParameter2f(D3DPSREGISTER_PixelToScreenTexCoord, 1.0f/vid.width, 1.0/vid.height);
 
@@ -2793,7 +2793,7 @@ void R_SetupShader_Surface(const vec3_t lightcolorbase, qboolean modellighting,
                                max(1, r_glsl_offsetmapping_reliefmapping_refinesteps.integer)
                        );
                if (r_glsl_permutation->loc_OffsetMapping_LodDistance >= 0) qglUniform1f(r_glsl_permutation->loc_OffsetMapping_LodDistance, r_glsl_offsetmapping_lod_distance.integer);
-               if (r_glsl_permutation->loc_OffsetMapping_Bias >= 0) qglUniform1f(r_glsl_permutation->loc_OffsetMapping_Bias, rsurface.texture->offsetbias / 255);
+               if (r_glsl_permutation->loc_OffsetMapping_Bias >= 0) qglUniform1f(r_glsl_permutation->loc_OffsetMapping_Bias, rsurface.texture->offsetbias / 255.0f);
                if (r_glsl_permutation->loc_ScreenToDepth >= 0) qglUniform2f(r_glsl_permutation->loc_ScreenToDepth, r_refdef.view.viewport.screentodepth[0], r_refdef.view.viewport.screentodepth[1]);
                if (r_glsl_permutation->loc_PixelToScreenTexCoord >= 0) qglUniform2f(r_glsl_permutation->loc_PixelToScreenTexCoord, 1.0f/vid.width, 1.0f/vid.height);
                if (r_glsl_permutation->loc_BounceGridMatrix >= 0) {Matrix4x4_Concat(&tempmatrix, &r_shadow_bouncegridmatrix, &rsurface.matrix);Matrix4x4_ToArrayFloatGL(&tempmatrix, m16f);qglUniformMatrix4fv(r_glsl_permutation->loc_BounceGridMatrix, 1, false, m16f);}
@@ -2940,7 +2940,7 @@ void R_SetupShader_Surface(const vec3_t lightcolorbase, qboolean modellighting,
                                max(1, r_glsl_offsetmapping_reliefmapping_refinesteps.integer)
                        );
                DPSOFTRAST_Uniform1f(DPSOFTRAST_UNIFORM_OffsetMapping_LodDistance, r_glsl_offsetmapping_lod_distance.integer);
-               DPSOFTRAST_Uniform1f(DPSOFTRAST_UNIFORM_OffsetMapping_Bias, rsurface.texture->offsetbias / 255);
+               DPSOFTRAST_Uniform1f(DPSOFTRAST_UNIFORM_OffsetMapping_Bias, rsurface.texture->offsetbias / 255.0f);
                DPSOFTRAST_Uniform2f(DPSOFTRAST_UNIFORM_ScreenToDepth, r_refdef.view.viewport.screentodepth[0], r_refdef.view.viewport.screentodepth[1]);
                DPSOFTRAST_Uniform2f(DPSOFTRAST_UNIFORM_PixelToScreenTexCoord, 1.0f/vid.width, 1.0f/vid.height);