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wined3d: Implement legacy light attenuation behavior in the GLSL vertex ffp.

This commit is contained in:
Matteo Bruni 2015-04-30 23:22:16 +02:00 committed by Alexandre Julliard
parent 72722222a7
commit 4388fb41e7
1 changed files with 49 additions and 17 deletions
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66
dlls/wined3d/glsl_shader.c
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@ -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;