Matteo Bruni : wined3d: Implement legacy light attenuation behavior in the GLSL vertex ffp.
Module: wine Branch: master Commit: 4388fb41e72f58e71c2280434b1af4a7640296bf URL: http://source.winehq.org/git/wine.git/?a=commit;h=4388fb41e72f58e71c2280434b... Author: Matteo Bruni <mbruni(a)codeweavers.com> Date: Thu Apr 30 23:22:16 2015 +0200 wined3d: Implement legacy light attenuation behavior in the GLSL vertex ffp. --- dlls/wined3d/glsl_shader.c | 66 ++++++++++++++++++++++++++++++++++------------ 1 file changed, 49 insertions(+), 17 deletions(-) diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c index 19c3d31..909b158 100644 --- a/dlls/wined3d/glsl_shader.c +++ b/dlls/wined3d/glsl_shader.c @@ -106,6 +106,7 @@ struct shader_glsl_priv { struct wine_rb_tree ffp_vertex_shaders; struct wine_rb_tree ffp_fragment_shaders; BOOL ffp_proj_control; + BOOL legacy_lighting; }; struct glsl_vs_program @@ -5404,7 +5405,8 @@ static const char *shader_glsl_ffp_mcs(enum wined3d_material_color_source mcs, c } static void shader_glsl_ffp_vertex_lighting(struct wined3d_string_buffer *buffer, - const struct wined3d_ffp_vs_settings *settings, const struct wined3d_gl_info *gl_info) + const struct wined3d_ffp_vs_settings *settings, const struct wined3d_gl_info *gl_info, + BOOL legacy_lighting) { const char *diffuse, *specular, *emission, *ambient; enum wined3d_light_type light_type; @@ -5438,25 +5440,37 @@ static void shader_glsl_ffp_vertex_lighting(struct wined3d_string_buffer *buffer shader_addline(buffer, "dst.z = dot(dir, dir);\n"); shader_addline(buffer, "dst.y = sqrt(dst.z);\n"); shader_addline(buffer, "dst.x = 1.0;\n"); - shader_addline(buffer, "if (dst.y <= ffp_light[%u].range)\n{\n", i); + if (legacy_lighting) + { + shader_addline(buffer, "dst.y = (ffp_light[%u].range - dst.y) / ffp_light[%u].range;\n", i, i); + shader_addline(buffer, "dst.z = dst.y * dst.y;\n"); + } + else + { + shader_addline(buffer, "if (dst.y <= ffp_light[%u].range)\n{\n", i); + } shader_addline(buffer, "att = dot(dst.xyz, vec3(ffp_light[%u].c_att," " ffp_light[%u].l_att, ffp_light[%u].q_att));\n", i, i, i); - shader_addline(buffer, "ambient += ffp_light[%u].ambient.xyz / att;\n", i); + if (!legacy_lighting) + shader_addline(buffer, "att = 1.0 / att;"); + shader_addline(buffer, "ambient += ffp_light[%u].ambient.xyz * att;\n", i); if (!settings->normal) { - shader_addline(buffer, "}\n"); + if (!legacy_lighting) + shader_addline(buffer, "}\n"); break; } shader_addline(buffer, "dir = normalize(dir);\n"); shader_addline(buffer, "diffuse += (clamp(dot(dir, normal), 0.0, 1.0)" - " * ffp_light[%u].diffuse.xyz) / att;\n", i); + " * ffp_light[%u].diffuse.xyz) * att;\n", i); if (settings->localviewer) shader_addline(buffer, "t = dot(normal, normalize(dir - normalize(ec_pos.xyz)));\n"); else shader_addline(buffer, "t = dot(normal, normalize(dir + vec3(0.0, 0.0, -1.0)));\n"); shader_addline(buffer, "if (t > 0.0) specular += (pow(t, ffp_material.shininess)" - " * ffp_light[%u].specular) / att;\n", i); - shader_addline(buffer, "}\n"); + " * ffp_light[%u].specular) * att;\n", i); + if (!legacy_lighting) + shader_addline(buffer, "}\n"); break; case WINED3D_LIGHT_SPOT: @@ -5464,20 +5478,35 @@ static void shader_glsl_ffp_vertex_lighting(struct wined3d_string_buffer *buffer shader_addline(buffer, "dst.z = dot(dir, dir);\n"); shader_addline(buffer, "dst.y = sqrt(dst.z);\n"); shader_addline(buffer, "dst.x = 1.0;\n"); - shader_addline(buffer, "if (dst.y <= ffp_light[%u].range)\n{\n", i); + if (legacy_lighting) + { + shader_addline(buffer, "dst.y = (ffp_light[%u].range - dst.y) / ffp_light[%u].range;\n", i, i); + shader_addline(buffer, "dst.z = dst.y * dst.y;\n"); + } + else + { + shader_addline(buffer, "if (dst.y <= ffp_light[%u].range)\n{\n", i); + } shader_addline(buffer, "dir = normalize(dir);\n"); shader_addline(buffer, "t = dot(-dir, normalize(ffp_light[%u].direction));\n", i); shader_addline(buffer, "if (t > ffp_light[%u].cos_htheta) att = 1.0;\n", i); shader_addline(buffer, "else if (t <= ffp_light[%u].cos_hphi) att = 0.0;\n", i); shader_addline(buffer, "else att = pow((t - ffp_light[%u].cos_hphi)" - " / (ffp_light[%u].cos_htheta - ffp_light[%u].cos_hphi), ffp_light[%u].falloff)" - " / dot(dst.xyz, vec3(ffp_light[%u].c_att," - " ffp_light[%u].l_att, ffp_light[%u].q_att));\n", - i, i, i, i, i, i, i); + " / (ffp_light[%u].cos_htheta - ffp_light[%u].cos_hphi), ffp_light[%u].falloff);\n", + i, i, i, i); + if (legacy_lighting) + shader_addline(buffer, "att *= dot(dst.xyz, vec3(ffp_light[%u].c_att," + " ffp_light[%u].l_att, ffp_light[%u].q_att));\n", + i, i, i); + else + shader_addline(buffer, "att /= dot(dst.xyz, vec3(ffp_light[%u].c_att," + " ffp_light[%u].l_att, ffp_light[%u].q_att));\n", + i, i, i); shader_addline(buffer, "ambient += ffp_light[%u].ambient.xyz * att;\n", i); if (!settings->normal) { - shader_addline(buffer, "}\n"); + if (!legacy_lighting) + shader_addline(buffer, "}\n"); break; } shader_addline(buffer, "diffuse += (clamp(dot(dir, normal), 0.0, 1.0)" @@ -5488,7 +5517,8 @@ static void shader_glsl_ffp_vertex_lighting(struct wined3d_string_buffer *buffer shader_addline(buffer, "t = dot(normal, normalize(dir + vec3(0.0, 0.0, -1.0)));\n"); shader_addline(buffer, "if (t > 0.0) specular += (pow(t, ffp_material.shininess)" " * ffp_light[%u].specular) * att;\n", i); - shader_addline(buffer, "}\n"); + if (!legacy_lighting) + shader_addline(buffer, "}\n"); break; case WINED3D_LIGHT_DIRECTIONAL: @@ -5523,7 +5553,8 @@ static void shader_glsl_ffp_vertex_lighting(struct wined3d_string_buffer *buffer /* Context activation is done by the caller. */ static GLuint shader_glsl_generate_ffp_vertex_shader(struct wined3d_string_buffer *buffer, - const struct wined3d_ffp_vs_settings *settings, const struct wined3d_gl_info *gl_info) + const struct wined3d_ffp_vs_settings *settings, const struct wined3d_gl_info *gl_info, + BOOL legacy_lighting) { GLuint shader_obj; unsigned int i; @@ -5588,7 +5619,7 @@ static GLuint shader_glsl_generate_ffp_vertex_shader(struct wined3d_string_buffe else shader_addline(buffer, "vec3 normal = ffp_normal_matrix * gl_Normal;\n"); - shader_glsl_ffp_vertex_lighting(buffer, settings, gl_info); + shader_glsl_ffp_vertex_lighting(buffer, settings, gl_info, legacy_lighting); for (i = 0; i < MAX_TEXTURES; ++i) { @@ -6292,7 +6323,7 @@ static struct glsl_ffp_vertex_shader *shader_glsl_find_ffp_vertex_shader(struct return NULL; shader->desc.settings = *settings; - shader->id = shader_glsl_generate_ffp_vertex_shader(&priv->shader_buffer, settings, gl_info); + shader->id = shader_glsl_generate_ffp_vertex_shader(&priv->shader_buffer, settings, gl_info, priv->legacy_lighting); list_init(&shader->linked_programs); if (wine_rb_put(&priv->ffp_vertex_shaders, &shader->desc.settings, &shader->desc.entry) == -1) ERR("Failed to insert ffp vertex shader.\n"); @@ -7246,6 +7277,7 @@ static HRESULT shader_glsl_alloc(struct wined3d_device *device, const struct win priv->fragment_pipe = fragment_pipe; fragment_pipe->get_caps(gl_info, &fragment_caps); priv->ffp_proj_control = fragment_caps.wined3d_caps & WINED3D_FRAGMENT_CAP_PROJ_CONTROL; + priv->legacy_lighting = device->wined3d->flags & WINED3D_LEGACY_FFP_LIGHTING; device->vertex_priv = vertex_priv; device->fragment_priv = fragment_priv;
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Alexandre Julliard