diff options
Diffstat (limited to 'source/blender/draw/intern/shaders/common_view_lib.glsl')
| -rw-r--r-- | source/blender/draw/intern/shaders/common_view_lib.glsl | 147 |
1 files changed, 97 insertions, 50 deletions
diff --git a/source/blender/draw/intern/shaders/common_view_lib.glsl b/source/blender/draw/intern/shaders/common_view_lib.glsl index 1e64a43349b..573ad046ea9 100644 --- a/source/blender/draw/intern/shaders/common_view_lib.glsl +++ b/source/blender/draw/intern/shaders/common_view_lib.glsl @@ -1,5 +1,7 @@ -#define COMMON_VIEW_LIB -#define DRW_RESOURCE_CHUNK_LEN 512 +/* Temporary until we fully make the switch. */ +#ifndef DRW_SHADER_SHARED_H + +# define DRW_RESOURCE_CHUNK_LEN 512 /* keep in sync with DRWManager.view_data */ layout(std140) uniform viewBlock @@ -22,8 +24,13 @@ layout(std140) uniform viewBlock vec4 CameraTexCoFactors; vec2 ViewportSize; vec2 ViewportSizeInverse; + + vec3 frustum_corners[8]; + vec4 frustum_planes[6]; }; +#endif /* DRW_SHADER_SHARED_H */ + #define ViewNear (ViewVecs[0].w) #define ViewFar (ViewVecs[1].w) @@ -82,67 +89,96 @@ vec4 pack_line_data(vec2 frag_co, vec2 edge_start, vec2 edge_pos) } } -uniform int resourceChunk; +/* Temporary until we fully make the switch. */ +#ifndef DRW_SHADER_SHARED_H +uniform int drw_resourceChunk; +#endif /* DRW_SHADER_SHARED_H */ #ifdef GPU_VERTEX_SHADER -# ifdef GPU_ARB_shader_draw_parameters -# define baseInstance gl_BaseInstanceARB -# else /* no ARB_shader_draw_parameters */ -uniform int baseInstance; -# endif -# if defined(IN_PLACE_INSTANCES) || defined(INSTANCED_ATTR) -/* When drawing instances of an object at the same position. */ -# define instanceId 0 -# elif defined(GPU_DEPRECATED_AMD_DRIVER) -/* A driver bug make it so that when using an attribute with GL_INT_2_10_10_10_REV as format, - * the gl_InstanceID is incremented by the 2 bit component of the attribute. - * Ignore gl_InstanceID then. */ -# define instanceId 0 -# else -# define instanceId gl_InstanceID -# endif +/* Temporary until we fully make the switch. */ +# ifndef DRW_SHADER_SHARED_H -# ifdef UNIFORM_RESOURCE_ID -/* This is in the case we want to do a special instance drawcall but still want to have the - * right resourceId and all the correct ubo datas. */ -uniform int resourceId; -# define resource_id resourceId -# else -# define resource_id (baseInstance + instanceId) -# endif +/* clang-format off */ +# if defined(IN_PLACE_INSTANCES) || defined(INSTANCED_ATTR) || defined(DRW_LEGACY_MODEL_MATRIX) || defined(GPU_DEPRECATED_AMD_DRIVER) +/* clang-format on */ +/* When drawing instances of an object at the same position. */ +# define instanceId 0 +# else +# define instanceId gl_InstanceID +# endif + +# if defined(UNIFORM_RESOURCE_ID) +/* This is in the case we want to do a special instance drawcall for one object but still want to + * have the right resourceId and all the correct ubo datas. */ +uniform int drw_ResourceID; +# define resource_id drw_ResourceID +# else +# define resource_id (gpu_BaseInstance + instanceId) +# endif /* Use this to declare and pass the value if * the fragment shader uses the resource_id. */ -# ifdef USE_GEOMETRY_SHADER -# define RESOURCE_ID_VARYING flat out int resourceIDGeom; -# define PASS_RESOURCE_ID resourceIDGeom = resource_id; -# else -# define RESOURCE_ID_VARYING flat out int resourceIDFrag; -# define PASS_RESOURCE_ID resourceIDFrag = resource_id; +# ifdef USE_GEOMETRY_SHADER +# define RESOURCE_ID_VARYING flat out int resourceIDGeom; +# define PASS_RESOURCE_ID resourceIDGeom = resource_id; +# else +# define RESOURCE_ID_VARYING flat out int resourceIDFrag; +# define PASS_RESOURCE_ID resourceIDFrag = resource_id; +# endif + +# endif /* DRW_SHADER_SHARED_H */ + +#endif /* GPU_VERTEX_SHADER */ + +/* Temporary until we fully make the switch. */ +#ifdef DRW_SHADER_SHARED_H +/* TODO(fclem): Rename PASS_RESOURCE_ID to DRW_RESOURCE_ID_VARYING_SET */ +# if defined(UNIFORM_RESOURCE_ID) +# define resource_id drw_ResourceID +# define PASS_RESOURCE_ID + +# elif defined(GPU_VERTEX_SHADER) +# define resource_id gpu_InstanceIndex +# define PASS_RESOURCE_ID drw_ResourceID_iface.resource_index = resource_id; + +# elif defined(GPU_GEOMETRY_SHADER) +# define resource_id drw_ResourceID_iface_in[0].index +# define PASS_RESOURCE_ID drw_ResourceID_iface_out.resource_index = resource_id; + +# elif defined(GPU_FRAGMENT_SHADER) +# define resource_id drw_ResourceID_iface.resource_index # endif -#endif +/* TODO(fclem): Remove. */ +# define RESOURCE_ID_VARYING + +#else /* If used in a fragment / geometry shader, we pass * resource_id as varying. */ -#ifdef GPU_GEOMETRY_SHADER -# define RESOURCE_ID_VARYING \ - flat out int resourceIDFrag; \ - flat in int resourceIDGeom[]; +# ifdef GPU_GEOMETRY_SHADER +# define RESOURCE_ID_VARYING \ + flat out int resourceIDFrag; \ + flat in int resourceIDGeom[]; -# define resource_id resourceIDGeom -# define PASS_RESOURCE_ID resourceIDFrag = resource_id[0]; -#endif +# define resource_id resourceIDGeom +# define PASS_RESOURCE_ID resourceIDFrag = resource_id[0]; +# endif -#ifdef GPU_FRAGMENT_SHADER +# ifdef GPU_FRAGMENT_SHADER flat in int resourceIDFrag; -# define resource_id resourceIDFrag +# define resource_id resourceIDFrag +# endif #endif /* Breaking this across multiple lines causes issues for some older GLSL compilers. */ /* clang-format off */ -#if !defined(GPU_INTEL) && !defined(GPU_DEPRECATED_AMD_DRIVER) && !defined(OS_MAC) && !defined(INSTANCED_ATTR) +#if !defined(GPU_INTEL) && !defined(GPU_DEPRECATED_AMD_DRIVER) && !defined(OS_MAC) && !defined(INSTANCED_ATTR) && !defined(DRW_LEGACY_MODEL_MATRIX) /* clang-format on */ + +/* Temporary until we fully make the switch. */ +# ifndef DRW_SHADER_SHARED_H + struct ObjectMatrices { mat4 drw_modelMatrix; mat4 drw_modelMatrixInverse; @@ -153,19 +189,28 @@ layout(std140) uniform modelBlock ObjectMatrices drw_matrices[DRW_RESOURCE_CHUNK_LEN]; }; -# define ModelMatrix (drw_matrices[resource_id].drw_modelMatrix) -# define ModelMatrixInverse (drw_matrices[resource_id].drw_modelMatrixInverse) +# define ModelMatrix (drw_matrices[resource_id].drw_modelMatrix) +# define ModelMatrixInverse (drw_matrices[resource_id].drw_modelMatrixInverse) +# endif /* DRW_SHADER_SHARED_H */ #else /* GPU_INTEL */ + +/* Temporary until we fully make the switch. */ +# ifndef DRW_SHADER_SHARED_H /* Intel GPU seems to suffer performance impact when the model matrix is in UBO storage. * So for now we just force using the legacy path. */ /* Note that this is also a workaround of a problem on osx (amd or nvidia) * and older amd driver on windows. */ uniform mat4 ModelMatrix; uniform mat4 ModelMatrixInverse; +# endif /* DRW_SHADER_SHARED_H */ + #endif -#define resource_handle (resourceChunk * DRW_RESOURCE_CHUNK_LEN + resource_id) +/* Temporary until we fully make the switch. */ +#ifndef DRW_SHADER_SHARED_H +# define resource_handle (drw_resourceChunk * DRW_RESOURCE_CHUNK_LEN + resource_id) +#endif /** Transform shortcuts. */ /* Rule of thumb: Try to reuse world positions and normals because converting through viewspace @@ -181,7 +226,7 @@ uniform mat4 ModelMatrixInverse; * transpose(ViewMatrixInverse) * transpose(ModelMatrixInverse) * * Knowing that the view matrix is orthogonal, the transpose is also the inverse. - * Note: This is only valid because we are only using the mat3 of the ViewMatrixInverse. + * NOTE: This is only valid because we are only using the mat3 of the ViewMatrixInverse. * ViewMatrix * transpose(ModelMatrixInverse) */ #define NormalMatrix transpose(mat3(ModelMatrixInverse)) @@ -218,23 +263,25 @@ uniform mat4 ModelMatrixInverse; /* ---- Opengl Depth conversion ---- */ +/* Expects positive near/far values. Returns positive value. */ float linear_depth(bool is_persp, float z, float zf, float zn) { if (is_persp) { return (zn * zf) / (z * (zn - zf) + zf); } else { - return (z * 2.0 - 1.0) * zf; + return z * (zf - zn) + zn; } } +/* Expects positive near/far values. Returns positive value. */ float buffer_depth(bool is_persp, float z, float zf, float zn) { if (is_persp) { return (zf * (zn - z)) / (z * (zn - zf)); } else { - return (z / (zf * 2.0)) + 0.5; + return (z - zn) / (zf - zn); } } |