diff options
author | Clément Foucault <foucault.clem@gmail.com> | 2020-07-30 14:55:13 +0300 |
---|---|---|
committer | Clément Foucault <foucault.clem@gmail.com> | 2020-07-30 17:44:58 +0300 |
commit | da741013a1e1b2e7c4f61a9486588253a457afd2 (patch) | |
tree | b491c53eadf1fcc07e2a326d000b1c94fbf07f48 /source/blender/gpu | |
parent | 55401fbb3d0daa82c999e388c2b5b87e7113b091 (diff) |
EEVEE: GLSL refactor/cleanup
- add the use of DRWShaderLibrary to EEVEE's glsl codebase to reduce code
complexity and duplication.
- split bsdf_common_lib.glsl into multiple sub library which are now shared
with other engines.
- the surface shader code is now more organised and have its own files.
- change default world to use a material nodetree and make lookdev shader
more clear.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D8306
Diffstat (limited to 'source/blender/gpu')
9 files changed, 256 insertions, 352 deletions
diff --git a/source/blender/gpu/CMakeLists.txt b/source/blender/gpu/CMakeLists.txt index c333a83360a..98a885f88e1 100644 --- a/source/blender/gpu/CMakeLists.txt +++ b/source/blender/gpu/CMakeLists.txt @@ -214,6 +214,8 @@ data_to_c_simple(shaders/gpu_shader_text_frag.glsl SRC) data_to_c_simple(shaders/gpu_shader_keyframe_diamond_vert.glsl SRC) data_to_c_simple(shaders/gpu_shader_keyframe_diamond_frag.glsl SRC) +data_to_c_simple(shaders/gpu_shader_codegen_lib.glsl SRC) + data_to_c_simple(shaders/gpu_shader_geometry.glsl SRC) data_to_c_simple(shaders/material/gpu_shader_material_add_shader.glsl SRC) diff --git a/source/blender/gpu/GPU_material.h b/source/blender/gpu/GPU_material.h index c372bfaf218..5adc447e711 100644 --- a/source/blender/gpu/GPU_material.h +++ b/source/blender/gpu/GPU_material.h @@ -110,6 +110,7 @@ typedef enum eGPUMatFlag { GPU_MATFLAG_GLOSSY = (1 << 1), GPU_MATFLAG_REFRACT = (1 << 2), GPU_MATFLAG_SSS = (1 << 3), + GPU_MATFLAG_BARYCENTRIC = (1 << 4), } eGPUMatFlag; typedef enum eGPUBlendMode { @@ -137,6 +138,13 @@ typedef enum eGPUMaterialStatus { GPU_MAT_SUCCESS, } eGPUMaterialStatus; +typedef void(GPUMaterialEvalCallbackFn)(GPUMaterial *mat, + int options, + const char **vert_code, + const char **geom_code, + const char **frag_lib, + const char **defines); + GPUNodeLink *GPU_constant(const float *num); GPUNodeLink *GPU_uniform(const float *num); GPUNodeLink *GPU_attribute(GPUMaterial *mat, CustomDataType type, const char *name); @@ -190,7 +198,8 @@ GPUMaterial *GPU_material_from_nodetree(struct Scene *scene, const char *geom_code, const char *frag_lib, const char *defines, - const char *name); + const char *name, + GPUMaterialEvalCallbackFn *callback); void GPU_material_compile(GPUMaterial *mat); void GPU_material_free(struct ListBase *gpumaterial); diff --git a/source/blender/gpu/intern/gpu_codegen.c b/source/blender/gpu/intern/gpu_codegen.c index 65c9a27e1fe..e15e4e08159 100644 --- a/source/blender/gpu/intern/gpu_codegen.c +++ b/source/blender/gpu/intern/gpu_codegen.c @@ -55,8 +55,8 @@ #include <stdarg.h> #include <string.h> +extern char datatoc_gpu_shader_codegen_lib_glsl[]; extern char datatoc_gpu_shader_common_obinfos_lib_glsl[]; -extern char datatoc_common_view_lib_glsl[]; /* -------------------- GPUPass Cache ------------------ */ /** @@ -307,11 +307,6 @@ static int codegen_process_uniforms_functions(GPUMaterial *material, int builtins = 0; ListBase ubo_inputs = {NULL, NULL}; - /* Attributes */ - LISTBASE_FOREACH (GPUMaterialAttribute *, attr, &graph->attributes) { - BLI_dynstr_appendf(ds, "in %s var%d;\n", gpu_data_type_to_string(attr->gputype), attr->id); - } - /* Textures */ LISTBASE_FOREACH (GPUMaterialTexture *, tex, &graph->textures) { if (tex->colorband) { @@ -378,7 +373,7 @@ static int codegen_process_uniforms_functions(GPUMaterial *material, LISTBASE_FOREACH (LinkData *, link, &ubo_inputs) { GPUInput *input = (GPUInput *)(link->data); - BLI_dynstr_appendf(ds, "\t%s unf%d;\n", gpu_data_type_to_string(input->type), input->id); + BLI_dynstr_appendf(ds, " %s unf%d;\n", gpu_data_type_to_string(input->type), input->id); } BLI_dynstr_append(ds, "};\n"); BLI_freelistN(&ubo_inputs); @@ -395,10 +390,10 @@ static void codegen_declare_tmps(DynStr *ds, GPUNodeGraph *graph) /* declare temporary variables for node output storage */ LISTBASE_FOREACH (GPUOutput *, output, &node->outputs) { if (output->type == GPU_CLOSURE) { - BLI_dynstr_appendf(ds, "\tClosure tmp%d;\n", output->id); + BLI_dynstr_appendf(ds, " Closure tmp%d;\n", output->id); } else { - BLI_dynstr_appendf(ds, "\t%s tmp%d;\n", gpu_data_type_to_string(output->type), output->id); + BLI_dynstr_appendf(ds, " %s tmp%d;\n", gpu_data_type_to_string(output->type), output->id); } } } @@ -408,7 +403,7 @@ static void codegen_declare_tmps(DynStr *ds, GPUNodeGraph *graph) static void codegen_call_functions(DynStr *ds, GPUNodeGraph *graph, GPUOutput *finaloutput) { LISTBASE_FOREACH (GPUNode *, node, &graph->nodes) { - BLI_dynstr_appendf(ds, "\t%s(", node->name); + BLI_dynstr_appendf(ds, " %s(", node->name); LISTBASE_FOREACH (GPUInput *, input, &node->inputs) { if (input->source == GPU_SOURCE_TEX) { @@ -501,21 +496,24 @@ static void codegen_call_functions(DynStr *ds, GPUNodeGraph *graph, GPUOutput *f BLI_dynstr_append(ds, ");\n"); } - BLI_dynstr_appendf(ds, "\n\treturn tmp%d", finaloutput->id); - BLI_dynstr_append(ds, ";\n"); + BLI_dynstr_appendf(ds, "\n return tmp%d;\n", finaloutput->id); } -static char *code_generate_fragment(GPUMaterial *material, GPUNodeGraph *graph) +static char *code_generate_fragment(GPUMaterial *material, + GPUNodeGraph *graph, + const char *interface_str) { DynStr *ds = BLI_dynstr_new(); char *code; int builtins; -#if 0 - BLI_dynstr_append(ds, FUNCTION_PROTOTYPES); -#endif - codegen_set_unique_ids(graph); + + /* Attributes, Shader stage interface. */ + if (interface_str) { + BLI_dynstr_appendf(ds, "in codegenInterface {%s};\n\n", interface_str); + } + builtins = codegen_process_uniforms_functions(material, ds, graph); if (builtins & (GPU_OBJECT_INFO | GPU_OBJECT_COLOR)) { @@ -523,73 +521,61 @@ static char *code_generate_fragment(GPUMaterial *material, GPUNodeGraph *graph) } if (builtins & GPU_BARYCENTRIC_TEXCO) { - BLI_dynstr_append(ds, "in vec2 barycentricTexCo;\n"); - } - - if (builtins & GPU_BARYCENTRIC_DIST) { - BLI_dynstr_append(ds, "flat in vec3 barycentricDist;\n"); + BLI_dynstr_append(ds, datatoc_gpu_shader_codegen_lib_glsl); } BLI_dynstr_append(ds, "Closure nodetree_exec(void)\n{\n"); if (builtins & GPU_BARYCENTRIC_TEXCO) { - BLI_dynstr_append(ds, "#ifdef HAIR_SHADER\n"); - BLI_dynstr_append(ds, - "\tvec2 barytexco = vec2((fract(barycentricTexCo.y) != 0.0)\n" - "\t ? barycentricTexCo.x\n" - "\t : 1.0 - barycentricTexCo.x,\n" - "\t 0.0);\n"); - BLI_dynstr_append(ds, "#else\n"); - BLI_dynstr_append(ds, "\tvec2 barytexco = barycentricTexCo;\n"); - BLI_dynstr_append(ds, "#endif\n"); + BLI_dynstr_append(ds, " vec2 barytexco = barycentric_resolve(barycentricTexCo);\n"); } /* TODO(fclem) get rid of that. */ if (builtins & GPU_VIEW_MATRIX) { - BLI_dynstr_append(ds, "\t#define viewmat ViewMatrix\n"); + BLI_dynstr_append(ds, " #define viewmat ViewMatrix\n"); } if (builtins & GPU_CAMERA_TEXCO_FACTORS) { - BLI_dynstr_append(ds, "\t#define camtexfac CameraTexCoFactors\n"); + BLI_dynstr_append(ds, " #define camtexfac CameraTexCoFactors\n"); } if (builtins & GPU_OBJECT_MATRIX) { - BLI_dynstr_append(ds, "\t#define objmat ModelMatrix\n"); + BLI_dynstr_append(ds, " #define objmat ModelMatrix\n"); } if (builtins & GPU_INVERSE_OBJECT_MATRIX) { - BLI_dynstr_append(ds, "\t#define objinv ModelMatrixInverse\n"); + BLI_dynstr_append(ds, " #define objinv ModelMatrixInverse\n"); } if (builtins & GPU_INVERSE_VIEW_MATRIX) { - BLI_dynstr_append(ds, "\t#define viewinv ViewMatrixInverse\n"); + BLI_dynstr_append(ds, " #define viewinv ViewMatrixInverse\n"); } if (builtins & GPU_LOC_TO_VIEW_MATRIX) { - BLI_dynstr_append(ds, "\t#define localtoviewmat (ViewMatrix * ModelMatrix)\n"); + BLI_dynstr_append(ds, " #define localtoviewmat (ViewMatrix * ModelMatrix)\n"); } if (builtins & GPU_INVERSE_LOC_TO_VIEW_MATRIX) { BLI_dynstr_append(ds, - "\t#define invlocaltoviewmat (ModelMatrixInverse * ViewMatrixInverse)\n"); + " #define invlocaltoviewmat (ModelMatrixInverse * ViewMatrixInverse)\n"); } if (builtins & GPU_VIEW_NORMAL) { BLI_dynstr_append(ds, "#ifdef HAIR_SHADER\n"); - BLI_dynstr_append(ds, "\tvec3 n;\n"); - BLI_dynstr_append(ds, "\tworld_normals_get(n);\n"); - BLI_dynstr_append(ds, "\tvec3 facingnormal = transform_direction(ViewMatrix, n);\n"); + BLI_dynstr_append(ds, " vec3 n;\n"); + BLI_dynstr_append(ds, " world_normals_get(n);\n"); + BLI_dynstr_append(ds, " vec3 facingnormal = transform_direction(ViewMatrix, n);\n"); BLI_dynstr_append(ds, "#else\n"); - BLI_dynstr_append(ds, "\tvec3 facingnormal = gl_FrontFacing ? viewNormal: -viewNormal;\n"); + BLI_dynstr_append(ds, " vec3 facingnormal = gl_FrontFacing ? viewNormal: -viewNormal;\n"); BLI_dynstr_append(ds, "#endif\n"); } if (builtins & GPU_WORLD_NORMAL) { - BLI_dynstr_append(ds, "\tvec3 facingwnormal;\n"); + BLI_dynstr_append(ds, " vec3 facingwnormal;\n"); if (builtins & GPU_VIEW_NORMAL) { BLI_dynstr_append(ds, "#ifdef HAIR_SHADER\n"); - BLI_dynstr_append(ds, "\tfacingwnormal = n;\n"); + BLI_dynstr_append(ds, " facingwnormal = n;\n"); BLI_dynstr_append(ds, "#else\n"); - BLI_dynstr_append(ds, "\tworld_normals_get(facingwnormal);\n"); + BLI_dynstr_append(ds, " world_normals_get(facingwnormal);\n"); BLI_dynstr_append(ds, "#endif\n"); } else { - BLI_dynstr_append(ds, "\tworld_normals_get(facingwnormal);\n"); + BLI_dynstr_append(ds, " world_normals_get(facingwnormal);\n"); } } if (builtins & GPU_VIEW_POSITION) { - BLI_dynstr_append(ds, "\t#define viewposition viewPosition\n"); + BLI_dynstr_append(ds, " #define viewposition viewPosition\n"); } codegen_declare_tmps(ds, graph); @@ -597,21 +583,6 @@ static char *code_generate_fragment(GPUMaterial *material, GPUNodeGraph *graph) BLI_dynstr_append(ds, "}\n"); - /* XXX This cannot go into gpu_shader_material.glsl because main() - * would be parsed and generate error */ - /* Old glsl mode compat. */ - /* TODO(fclem) This is only used by world shader now. get rid of it? */ - BLI_dynstr_append(ds, "#ifndef NODETREE_EXEC\n"); - BLI_dynstr_append(ds, "out vec4 fragColor;\n"); - BLI_dynstr_append(ds, "void main()\n"); - BLI_dynstr_append(ds, "{\n"); - BLI_dynstr_append(ds, "\tClosure cl = nodetree_exec();\n"); - BLI_dynstr_append(ds, - "\tfragColor = vec4(cl.radiance, " - "saturate(1.0 - avg(cl.transmittance)));\n"); - BLI_dynstr_append(ds, "}\n"); - BLI_dynstr_append(ds, "#endif\n\n"); - /* create shader */ code = BLI_dynstr_get_cstring(ds); BLI_dynstr_free(ds); @@ -646,21 +617,48 @@ static const char *attr_prefix_get(CustomDataType type) } } -static char *code_generate_vertex(GPUNodeGraph *graph, const char *vert_code, bool use_geom) +/* We talk about shader stage interface, not to be mistaken with GPUShaderInterface. */ +static char *code_generate_interface(GPUNodeGraph *graph, int builtins) { + if (BLI_listbase_is_empty(&graph->attributes) && + (builtins & (GPU_BARYCENTRIC_DIST | GPU_BARYCENTRIC_TEXCO)) == 0) { + return NULL; + } + DynStr *ds = BLI_dynstr_new(); - char *code; - int builtins = 0; - /* Hairs uv and col attributes are passed by bufferTextures. */ - BLI_dynstr_append(ds, - "#ifdef HAIR_SHADER\n" - "#define DEFINE_ATTR(type, attr) uniform samplerBuffer attr\n" - "#else\n" - "#define DEFINE_ATTR(type, attr) in type attr\n" - "#endif\n"); + BLI_dynstr_append(ds, "\n"); LISTBASE_FOREACH (GPUMaterialAttribute *, attr, &graph->attributes) { + BLI_dynstr_appendf(ds, "%s var%d;\n", gpu_data_type_to_string(attr->gputype), attr->id); + } + if (builtins & GPU_BARYCENTRIC_TEXCO) { + BLI_dynstr_append(ds, "vec2 barycentricTexCo;\n"); + } + if (builtins & GPU_BARYCENTRIC_DIST) { + BLI_dynstr_append(ds, "vec3 barycentricDist;\n"); + } + + char *code = BLI_dynstr_get_cstring(ds); + + BLI_dynstr_free(ds); + + return code; +} + +static char *code_generate_vertex(GPUNodeGraph *graph, + const char *interface_str, + const char *vert_code, + int builtins) +{ + DynStr *ds = BLI_dynstr_new(); + + BLI_dynstr_append(ds, datatoc_gpu_shader_codegen_lib_glsl); + + /* Inputs */ + LISTBASE_FOREACH (GPUMaterialAttribute *, attr, &graph->attributes) { + const char *type_str = gpu_data_type_to_string(attr->gputype); + const char *prefix = attr_prefix_get(attr->type); /* XXX FIXME : see notes in mesh_render_data_create() */ /* NOTE : Replicate changes to mesh_render_data_create() in draw_cache_impl_mesh.c */ if (attr->type == CD_ORCO) { @@ -669,188 +667,58 @@ static char *code_generate_vertex(GPUNodeGraph *graph, const char *vert_code, bo BLI_dynstr_append(ds, "DEFINE_ATTR(vec4, orco);\n"); } else if (attr->name[0] == '\0') { - BLI_dynstr_appendf(ds, - "DEFINE_ATTR(%s, %s);\n", - gpu_data_type_to_string(attr->gputype), - attr_prefix_get(attr->type)); - BLI_dynstr_appendf(ds, "#define att%d %s\n", attr->id, attr_prefix_get(attr->type)); + BLI_dynstr_appendf(ds, "DEFINE_ATTR(%s, %s);\n", type_str, prefix); + BLI_dynstr_appendf(ds, "#define att%d %s\n", attr->id, prefix); } else { char attr_safe_name[GPU_MAX_SAFE_ATTR_NAME]; GPU_vertformat_safe_attr_name(attr->name, attr_safe_name, GPU_MAX_SAFE_ATTR_NAME); - BLI_dynstr_appendf(ds, - "DEFINE_ATTR(%s, %s%s);\n", - gpu_data_type_to_string(attr->gputype), - attr_prefix_get(attr->type), - attr_safe_name); - BLI_dynstr_appendf( - ds, "#define att%d %s%s\n", attr->id, attr_prefix_get(attr->type), attr_safe_name); - } - BLI_dynstr_appendf(ds, - "out %s var%d%s;\n", - gpu_data_type_to_string(attr->gputype), - attr->id, - use_geom ? "g" : ""); - } - - LISTBASE_FOREACH (GPUNode *, node, &graph->nodes) { - LISTBASE_FOREACH (GPUInput *, input, &node->inputs) { - if (input->source == GPU_SOURCE_BUILTIN) { - builtins |= input->builtin; - } + BLI_dynstr_appendf(ds, "DEFINE_ATTR(%s, %s%s);\n", type_str, prefix, attr_safe_name); + BLI_dynstr_appendf(ds, "#define att%d %s%s\n", attr->id, prefix, attr_safe_name); } } - if (builtins & GPU_BARYCENTRIC_TEXCO) { - BLI_dynstr_append(ds, "#ifdef HAIR_SHADER\n"); - BLI_dynstr_appendf(ds, "out vec2 barycentricTexCo%s;\n", use_geom ? "g" : ""); - BLI_dynstr_append(ds, "#endif\n"); - } - - if (builtins & GPU_BARYCENTRIC_DIST) { - BLI_dynstr_append(ds, "out vec3 barycentricPosg;\n"); + /* Outputs interface */ + if (interface_str) { + BLI_dynstr_appendf(ds, "out codegenInterface {%s};\n\n", interface_str); } - BLI_dynstr_append(ds, "\n#define USE_ATTR\n"); - - /* Prototype, defined later (this is because of matrices definition). */ - BLI_dynstr_append(ds, "void pass_attr(in vec3 position);\n"); - - BLI_dynstr_append(ds, "\n"); - - if (use_geom) { - /* XXX HACK: Eevee specific. */ - char *vert_new, *vert_new2; - vert_new = BLI_str_replaceN(vert_code, "worldPosition", "worldPositiong"); - vert_new2 = vert_new; - vert_new = BLI_str_replaceN(vert_new2, "viewPosition", "viewPositiong"); - MEM_freeN(vert_new2); - vert_new2 = vert_new; - vert_new = BLI_str_replaceN(vert_new2, "worldNormal", "worldNormalg"); - MEM_freeN(vert_new2); - vert_new2 = vert_new; - vert_new = BLI_str_replaceN(vert_new2, "viewNormal", "viewNormalg"); - MEM_freeN(vert_new2); - - BLI_dynstr_append(ds, vert_new); - - MEM_freeN(vert_new); - } - else { - BLI_dynstr_append(ds, vert_code); - } + /* Prototype. Needed for hair functions. */ + BLI_dynstr_append(ds, "void pass_attr(vec3 position, mat3 normalmat, mat4 modelmatinv);\n"); + BLI_dynstr_append(ds, "#define USE_ATTR\n\n"); + BLI_dynstr_append(ds, vert_code); BLI_dynstr_append(ds, "\n"); - BLI_dynstr_append(ds, use_geom ? "RESOURCE_ID_VARYING_GEOM\n" : "RESOURCE_ID_VARYING\n"); - - /* Prototype because defined later. */ - BLI_dynstr_append(ds, - "vec2 hair_get_customdata_vec2(const samplerBuffer);\n" - "vec3 hair_get_customdata_vec3(const samplerBuffer);\n" - "vec4 hair_get_customdata_vec4(const samplerBuffer);\n" - "vec3 hair_get_strand_pos(void);\n" - "int hair_get_base_id(void);\n" - "\n"); - - BLI_dynstr_append(ds, "void pass_attr(in vec3 position) {\n"); - - BLI_dynstr_append(ds, use_geom ? "\tPASS_RESOURCE_ID_GEOM\n" : "\tPASS_RESOURCE_ID\n"); - - BLI_dynstr_append(ds, "#ifdef HAIR_SHADER\n"); - - if (builtins & GPU_BARYCENTRIC_TEXCO) { - /* To match cycles without breaking into individual segment we encode if we need to invert - * the first component into the second component. We invert if the barycentricTexCo.y - * is NOT 0.0 or 1.0. */ - BLI_dynstr_append(ds, "\tint _base_id = hair_get_base_id();\n"); - BLI_dynstr_appendf( - ds, "\tbarycentricTexCo%s.x = float((_base_id %% 2) == 1);\n", use_geom ? "g" : ""); - BLI_dynstr_appendf( - ds, "\tbarycentricTexCo%s.y = float(((_base_id %% 4) %% 3) > 0);\n", use_geom ? "g" : ""); - } - - if (builtins & GPU_BARYCENTRIC_DIST) { - BLI_dynstr_append(ds, "\tbarycentricPosg = position;\n"); - } - - LISTBASE_FOREACH (GPUMaterialAttribute *, attr, &graph->attributes) { - if (attr->type == CD_TANGENT) { - /* Not supported by hairs */ - BLI_dynstr_appendf(ds, "\tvar%d%s = vec4(0.0);\n", attr->id, use_geom ? "g" : ""); - } - else if (attr->type == CD_ORCO) { - BLI_dynstr_appendf(ds, - "\tvar%d%s = OrcoTexCoFactors[0].xyz + (ModelMatrixInverse * " - "vec4(hair_get_strand_pos(), 1.0)).xyz * OrcoTexCoFactors[1].xyz;\n", - attr->id, - use_geom ? "g" : ""); - /* TODO: fix ORCO with modifiers. */ - } - else { - BLI_dynstr_appendf(ds, - "\tvar%d%s = hair_get_customdata_%s(att%d);\n", - attr->id, - use_geom ? "g" : "", - gpu_data_type_to_string(attr->gputype), - attr->id); - } - } - - BLI_dynstr_append(ds, "#else /* MESH_SHADER */\n"); + BLI_dynstr_append(ds, "void pass_attr(vec3 position, mat3 normalmat, mat4 modelmatinv) {\n"); /* GPU_BARYCENTRIC_TEXCO cannot be computed based on gl_VertexID * for MESH_SHADER because of indexed drawing. In this case a * geometry shader is needed. */ - + if (builtins & GPU_BARYCENTRIC_TEXCO) { + BLI_dynstr_appendf(ds, " barycentricTexCo = barycentric_get();\n"); + } if (builtins & GPU_BARYCENTRIC_DIST) { - BLI_dynstr_append(ds, "\tbarycentricPosg = (ModelMatrix * vec4(position, 1.0)).xyz;\n"); + BLI_dynstr_appendf(ds, " barycentricDist = vec3(0);\n"); } LISTBASE_FOREACH (GPUMaterialAttribute *, attr, &graph->attributes) { if (attr->type == CD_TANGENT) { /* silly exception */ - BLI_dynstr_appendf(ds, - "\tvar%d%s.xyz = transpose(mat3(ModelMatrixInverse)) * att%d.xyz;\n", - attr->id, - use_geom ? "g" : "", - attr->id); - BLI_dynstr_appendf(ds, "\tvar%d%s.w = att%d.w;\n", attr->id, use_geom ? "g" : "", attr->id); - /* Normalize only if vector is not null. */ - BLI_dynstr_appendf(ds, - "\tfloat lvar%d = dot(var%d%s.xyz, var%d%s.xyz);\n", - attr->id, - attr->id, - use_geom ? "g" : "", - attr->id, - use_geom ? "g" : ""); - BLI_dynstr_appendf(ds, - "\tvar%d%s.xyz *= (lvar%d > 0.0) ? inversesqrt(lvar%d) : 1.0;\n", - attr->id, - use_geom ? "g" : "", - attr->id, - attr->id); + BLI_dynstr_appendf(ds, " var%d = tangent_get(att%d, normalmat);\n", attr->id, attr->id); } else if (attr->type == CD_ORCO) { - BLI_dynstr_appendf(ds, - "\tvar%d%s = OrcoTexCoFactors[0].xyz + position *" - " OrcoTexCoFactors[1].xyz;\n", - attr->id, - use_geom ? "g" : ""); - /* See mesh_create_loop_orco() for explanation. */ - BLI_dynstr_appendf(ds, - "\tif (orco.w == 0.0) { var%d%s = orco.xyz * 0.5 + 0.5; }\n", - attr->id, - use_geom ? "g" : ""); + BLI_dynstr_appendf( + ds, " var%d = orco_get(position, modelmatinv, OrcoTexCoFactors, orco);\n", attr->id); } else { - BLI_dynstr_appendf(ds, "\tvar%d%s = att%d;\n", attr->id, use_geom ? "g" : "", attr->id); + const char *type_str = gpu_data_type_to_string(attr->gputype); + BLI_dynstr_appendf(ds, " var%d = GET_ATTR(%s, att%d);\n", attr->id, type_str, attr->id); } } - BLI_dynstr_append(ds, "#endif /* HAIR_SHADER */\n"); BLI_dynstr_append(ds, "}\n"); - code = BLI_dynstr_get_cstring(ds); + char *code = BLI_dynstr_get_cstring(ds); BLI_dynstr_free(ds); @@ -864,144 +732,46 @@ static char *code_generate_vertex(GPUNodeGraph *graph, const char *vert_code, bo } static char *code_generate_geometry(GPUNodeGraph *graph, + const char *interface_str, const char *geom_code, - const char *defines) + int builtins) { - DynStr *ds = BLI_dynstr_new(); - char *code; - int builtins = 0; - - /* XXX we should not make specific eevee cases here. */ - bool is_hair_shader = (strstr(defines, "HAIR_SHADER") != NULL); - - /* Create prototype because attributes cannot be declared before layout. */ - BLI_dynstr_append(ds, "void pass_attr(in int vert);\n"); - BLI_dynstr_append(ds, "void calc_barycentric_distances(vec3 pos0, vec3 pos1, vec3 pos2);\n"); - BLI_dynstr_append(ds, "#define USE_ATTR\n"); - - LISTBASE_FOREACH (GPUNode *, node, &graph->nodes) { - LISTBASE_FOREACH (GPUInput *, input, &node->inputs) { - if (input->source == GPU_SOURCE_BUILTIN) { - builtins |= input->builtin; - } - } + if (!geom_code) { + return NULL; } - /* Generate varying declarations. */ - LISTBASE_FOREACH (GPUMaterialAttribute *, attr, &graph->attributes) { - BLI_dynstr_appendf(ds, "in %s var%dg[];\n", gpu_data_type_to_string(attr->gputype), attr->id); - BLI_dynstr_appendf(ds, "out %s var%d;\n", gpu_data_type_to_string(attr->gputype), attr->id); - } - - if (builtins & GPU_BARYCENTRIC_TEXCO) { - BLI_dynstr_append(ds, "#ifdef HAIR_SHADER\n"); - BLI_dynstr_append(ds, "in vec2 barycentricTexCog[];\n"); - BLI_dynstr_append(ds, "#endif\n"); + DynStr *ds = BLI_dynstr_new(); - BLI_dynstr_append(ds, "out vec2 barycentricTexCo;\n"); + /* Attributes, Shader interface; */ + if (interface_str) { + BLI_dynstr_appendf(ds, "in codegenInterface {%s} dataAttrIn[];\n\n", interface_str); + BLI_dynstr_appendf(ds, "out codegenInterface {%s} dataAttrOut;\n\n", interface_str); } - if (builtins & GPU_BARYCENTRIC_DIST) { - BLI_dynstr_append(ds, "in vec3 barycentricPosg[];\n"); - BLI_dynstr_append(ds, "flat out vec3 barycentricDist;\n"); - } - - if (geom_code == NULL) { - /* Force geometry usage if GPU_BARYCENTRIC_DIST or GPU_BARYCENTRIC_TEXCO are used. - * Note: GPU_BARYCENTRIC_TEXCO only requires it if the shader is not drawing hairs. */ - if ((builtins & (GPU_BARYCENTRIC_DIST | GPU_BARYCENTRIC_TEXCO)) == 0 || is_hair_shader) { - /* Early out */ - BLI_dynstr_free(ds); - return NULL; - } - else { - /* Force geom shader usage */ - /* TODO put in external file. */ - BLI_dynstr_append(ds, "layout(triangles) in;\n"); - BLI_dynstr_append(ds, "layout(triangle_strip, max_vertices=3) out;\n"); - - BLI_dynstr_append(ds, "in vec3 worldPositiong[];\n"); - BLI_dynstr_append(ds, "in vec3 viewPositiong[];\n"); - BLI_dynstr_append(ds, "in vec3 worldNormalg[];\n"); - BLI_dynstr_append(ds, "in vec3 viewNormalg[];\n"); - - BLI_dynstr_append(ds, "out vec3 worldPosition;\n"); - BLI_dynstr_append(ds, "out vec3 viewPosition;\n"); - BLI_dynstr_append(ds, "out vec3 worldNormal;\n"); - BLI_dynstr_append(ds, "out vec3 viewNormal;\n"); - - BLI_dynstr_append(ds, datatoc_common_view_lib_glsl); - - BLI_dynstr_append(ds, "void main(){\n"); - - if (builtins & GPU_BARYCENTRIC_DIST) { - BLI_dynstr_append(ds, - "\tcalc_barycentric_distances(barycentricPosg[0], barycentricPosg[1], " - "barycentricPosg[2]);\n"); - } - - for (int i = 0; i < 3; i++) { - BLI_dynstr_appendf(ds, "\tgl_Position = gl_in[%d].gl_Position;\n", i); - BLI_dynstr_appendf(ds, "\tgl_ClipDistance[0] = gl_in[%d].gl_ClipDistance[0];\n", i); - BLI_dynstr_appendf(ds, "\tpass_attr(%d);\n", i); - BLI_dynstr_append(ds, "\tEmitVertex();\n"); - } - BLI_dynstr_append(ds, "}\n"); - } - } - else { - BLI_dynstr_append(ds, geom_code); - } + BLI_dynstr_append(ds, datatoc_gpu_shader_codegen_lib_glsl); if (builtins & GPU_BARYCENTRIC_DIST) { - BLI_dynstr_append(ds, "void calc_barycentric_distances(vec3 pos0, vec3 pos1, vec3 pos2) {\n"); - BLI_dynstr_append(ds, "\tvec3 edge21 = pos2 - pos1;\n"); - BLI_dynstr_append(ds, "\tvec3 edge10 = pos1 - pos0;\n"); - BLI_dynstr_append(ds, "\tvec3 edge02 = pos0 - pos2;\n"); - BLI_dynstr_append(ds, "\tvec3 d21 = normalize(edge21);\n"); - BLI_dynstr_append(ds, "\tvec3 d10 = normalize(edge10);\n"); - BLI_dynstr_append(ds, "\tvec3 d02 = normalize(edge02);\n"); - - BLI_dynstr_append(ds, "\tfloat d = dot(d21, edge02);\n"); - BLI_dynstr_append(ds, "\tbarycentricDist.x = sqrt(dot(edge02, edge02) - d * d);\n"); - BLI_dynstr_append(ds, "\td = dot(d02, edge10);\n"); - BLI_dynstr_append(ds, "\tbarycentricDist.y = sqrt(dot(edge10, edge10) - d * d);\n"); - BLI_dynstr_append(ds, "\td = dot(d10, edge21);\n"); - BLI_dynstr_append(ds, "\tbarycentricDist.z = sqrt(dot(edge21, edge21) - d * d);\n"); - BLI_dynstr_append(ds, "}\n"); + /* geom_code should do something with this, but may not. */ + BLI_dynstr_append(ds, "#define DO_BARYCENTRIC_DISTANCES\n"); } - BLI_dynstr_append(ds, "RESOURCE_ID_VARYING\n"); - /* Generate varying assignments. */ - BLI_dynstr_append(ds, "void pass_attr(in int vert) {\n"); - - BLI_dynstr_append(ds, "\tPASS_RESOURCE_ID(vert)\n"); - - /* XXX HACK: Eevee specific. */ - if (geom_code == NULL) { - BLI_dynstr_append(ds, "\tworldPosition = worldPositiong[vert];\n"); - BLI_dynstr_append(ds, "\tviewPosition = viewPositiong[vert];\n"); - BLI_dynstr_append(ds, "\tworldNormal = worldNormalg[vert];\n"); - BLI_dynstr_append(ds, "\tviewNormal = viewNormalg[vert];\n"); - } + BLI_dynstr_append(ds, "#define USE_ATTR\n"); + BLI_dynstr_append(ds, "void pass_attr(const int vert) {\n"); if (builtins & GPU_BARYCENTRIC_TEXCO) { - BLI_dynstr_append(ds, "#ifdef HAIR_SHADER\n"); - BLI_dynstr_append(ds, "\tbarycentricTexCo = barycentricTexCog[vert];\n"); - BLI_dynstr_append(ds, "#else\n"); - BLI_dynstr_append(ds, "\tbarycentricTexCo.x = float((vert % 3) == 0);\n"); - BLI_dynstr_append(ds, "\tbarycentricTexCo.y = float((vert % 3) == 1);\n"); - BLI_dynstr_append(ds, "#endif\n"); + BLI_dynstr_append(ds, " dataAttrOut.barycentricTexCo = calc_barycentric_co(vert);\n"); } LISTBASE_FOREACH (GPUMaterialAttribute *, attr, &graph->attributes) { /* TODO let shader choose what to do depending on what the attribute is. */ - BLI_dynstr_appendf(ds, "\tvar%d = var%dg[vert];\n", attr->id, attr->id); + BLI_dynstr_appendf(ds, " dataAttrOut.var%d = dataAttrIn[vert].var%d;\n", attr->id, attr->id); } - BLI_dynstr_append(ds, "}\n"); + BLI_dynstr_append(ds, "}\n\n"); - code = BLI_dynstr_get_cstring(ds); + BLI_dynstr_append(ds, geom_code); + + char *code = BLI_dynstr_get_cstring(ds); BLI_dynstr_free(ds); return code; @@ -1031,8 +801,17 @@ GPUPass *GPU_generate_pass(GPUMaterial *material, * generated VBOs are ready to accept the future shader. */ gpu_node_graph_prune_unused(graph); + int builtins = 0; + LISTBASE_FOREACH (GPUNode *, node, &graph->nodes) { + LISTBASE_FOREACH (GPUInput *, input, &node->inputs) { + if (input->source == GPU_SOURCE_BUILTIN) { + builtins |= input->builtin; + } + } + } /* generate code */ - char *fragmentgen = code_generate_fragment(material, graph); + char *interface_str = code_generate_interface(graph, builtins); + char *fragmentgen = code_generate_fragment(material, graph, interface_str); /* Cache lookup: Reuse shaders already compiled */ uint32_t hash = gpu_pass_hash(fragmentgen, defines, &graph->attributes); @@ -1040,6 +819,7 @@ GPUPass *GPU_generate_pass(GPUMaterial *material, if (pass_hash && (pass_hash->next == NULL || pass_hash->next->hash != hash)) { /* No collision, just return the pass. */ + MEM_SAFE_FREE(interface_str); MEM_freeN(fragmentgen); if (!gpu_pass_is_valid(pass_hash)) { /* Shader has already been created but failed to compile. */ @@ -1054,10 +834,11 @@ GPUPass *GPU_generate_pass(GPUMaterial *material, GSet *used_libraries = gpu_material_used_libraries(material); char *tmp = gpu_material_library_generate_code(used_libraries, frag_lib); - char *geometrycode = code_generate_geometry(graph, geom_code, defines); - char *vertexcode = code_generate_vertex(graph, vert_code, (geometrycode != NULL)); + char *geometrycode = code_generate_geometry(graph, interface_str, geom_code, builtins); + char *vertexcode = code_generate_vertex(graph, interface_str, vert_code, builtins); char *fragmentcode = BLI_strdupcat(tmp, fragmentgen); + MEM_SAFE_FREE(interface_str); MEM_freeN(fragmentgen); MEM_freeN(tmp); diff --git a/source/blender/gpu/intern/gpu_material.c b/source/blender/gpu/intern/gpu_material.c index c65c1046b8f..8e98d1934d4 100644 --- a/source/blender/gpu/intern/gpu_material.c +++ b/source/blender/gpu/intern/gpu_material.c @@ -85,7 +85,7 @@ struct GPUMaterial { bool has_surface_output; /* Only used by Eevee to know which bsdf are used. */ - int flag; + eGPUMatFlag flag; /* Used by 2.8 pipeline */ GPUUniformBuffer *ubo; /* UBOs for shader uniforms. */ @@ -659,7 +659,8 @@ GPUMaterial *GPU_material_from_nodetree(Scene *scene, const char *geom_code, const char *frag_lib, const char *defines, - const char *name) + const char *name, + GPUMaterialEvalCallbackFn *callback) { LinkData *link; bool has_volume_output, has_surface_output; @@ -696,6 +697,9 @@ GPUMaterial *GPU_material_from_nodetree(Scene *scene, mat->has_volume_output = has_volume_output; if (mat->graph.outlink) { + if (callback) { + callback(mat, options, &vert_code, &geom_code, &frag_lib, &defines); + } /* HACK: this is only for eevee. We add the define here after the nodetree evaluation. */ if (GPU_material_flag_get(mat, GPU_MATFLAG_SSS)) { defines = BLI_string_joinN(defines, diff --git a/source/blender/gpu/intern/gpu_shader.cc b/source/blender/gpu/intern/gpu_shader.cc index bd3cad31093..2b54e733bf5 100644 --- a/source/blender/gpu/intern/gpu_shader.cc +++ b/source/blender/gpu/intern/gpu_shader.cc @@ -341,7 +341,7 @@ GPUShader *GPU_shader_create_ex(const char *vertexcode, gpu_shader_standard_extensions(standard_extensions); if (vertexcode) { - const char *source[6]; + const char *source[7]; /* custom limit, may be too small, beware */ int num_source = 0; @@ -352,6 +352,9 @@ GPUShader *GPU_shader_create_ex(const char *vertexcode, source[num_source++] = standard_extensions; source[num_source++] = standard_defines; + if (geocode) { + source[num_source++] = "#define USE_GEOMETRY_SHADER\n"; + } if (defines) { source[num_source++] = defines; } @@ -375,7 +378,7 @@ GPUShader *GPU_shader_create_ex(const char *vertexcode, } if (fragcode) { - const char *source[7]; + const char *source[8]; int num_source = 0; source[num_source++] = gpu_shader_version(); @@ -385,6 +388,9 @@ GPUShader *GPU_shader_create_ex(const char *vertexcode, source[num_source++] = standard_extensions; source[num_source++] = standard_defines; + if (geocode) { + source[num_source++] = "#define USE_GEOMETRY_SHADER\n"; + } if (defines) { source[num_source++] = defines; } @@ -453,6 +459,9 @@ GPUShader *GPU_shader_create_ex(const char *vertexcode, if (!status) { glGetProgramInfoLog(shader->program, sizeof(log), &length, log); /* print attached shaders in pipeline order */ + if (defines) { + shader_print_errors("linking", log, &defines, 1); + } if (vertexcode) { shader_print_errors("linking", log, &vertexcode, 1); } diff --git a/source/blender/gpu/shaders/gpu_shader_codegen_lib.glsl b/source/blender/gpu/shaders/gpu_shader_codegen_lib.glsl new file mode 100644 index 00000000000..f7bf3d33361 --- /dev/null +++ b/source/blender/gpu/shaders/gpu_shader_codegen_lib.glsl @@ -0,0 +1,87 @@ + +vec3 calc_barycentric_distances(vec3 pos0, vec3 pos1, vec3 pos2) +{ + vec3 edge21 = pos2 - pos1; + vec3 edge10 = pos1 - pos0; + vec3 edge02 = pos0 - pos2; + vec3 d21 = normalize(edge21); + vec3 d10 = normalize(edge10); + vec3 d02 = normalize(edge02); + + vec3 dists; + float d = dot(d21, edge02); + dists.x = sqrt(dot(edge02, edge02) - d * d); + d = dot(d02, edge10); + dists.y = sqrt(dot(edge10, edge10) - d * d); + d = dot(d10, edge21); + dists.z = sqrt(dot(edge21, edge21) - d * d); + return dists; +} + +vec2 calc_barycentric_co(int vertid) +{ + vec2 bary; + bary.x = float((vertid % 3) == 0); + bary.y = float((vertid % 3) == 1); + return bary; +} + +#ifdef HAIR_SHADER + +/* Hairs uv and col attributes are passed by bufferTextures. */ +# define DEFINE_ATTR(type, attr) uniform samplerBuffer attr +# define GET_ATTR(type, attr) hair_get_customdata_##type(attr) + +# define barycentric_get() hair_get_barycentric() +# define barycentric_resolve(bary) hair_resolve_barycentric(bary) + +vec3 orco_get(vec3 local_pos, mat4 modelmatinv, vec4 orco_madd[2], const samplerBuffer orco_samp) +{ + /* TODO: fix ORCO with modifiers. */ + vec3 orco = (modelmatinv * vec4(local_pos, 1.0)).xyz; + return orco_madd[0].xyz + orco * orco_madd[1].xyz; +} + +vec4 tangent_get(const samplerBuffer attr, mat3 normalmat) +{ + /* Unsupported */ + return vec4(0.0); +} + +#else /* MESH_SHADER */ + +# define DEFINE_ATTR(type, attr) in type attr +# define GET_ATTR(type, attr) attr + +/* Calculated in geom shader later with calc_barycentric_co. */ +# define barycentric_get() vec2(0) +# define barycentric_resolve(bary) bary + +vec3 orco_get(vec3 local_pos, mat4 modelmatinv, vec4 orco_madd[2], vec4 orco) +{ + /* If the object does not have any deformation, the orco layer calculation is done on the fly + * using the orco_madd factors. + * We know when there is no orco layer when orco.w is 1.0 because it uses the generic vertex + * attrib (which is [0,0,0,1]). */ + if (orco.w == 0.0) { + return orco.xyz * 0.5 + 0.5; + } + else { + return orco_madd[0].xyz + local_pos * orco_madd[1].xyz; + } +} + +vec4 tangent_get(vec4 attr, mat3 normalmat) +{ + vec4 tangent; + tangent.xyz = normalmat * attr.xyz; + tangent.w = attr.w; + float len_sqr = dot(tangent.xyz, tangent.xyz); + /* Normalize only if vector is not null. */ + if (len_sqr > 0.0) { + tangent.xyz *= inversesqrt(len_sqr); + } + return tangent; +} + +#endif diff --git a/source/blender/gpu/shaders/material/gpu_shader_material_ambient_occlusion.glsl b/source/blender/gpu/shaders/material/gpu_shader_material_ambient_occlusion.glsl index d6d6fbab971..eea8d19efce 100644 --- a/source/blender/gpu/shaders/material/gpu_shader_material_ambient_occlusion.glsl +++ b/source/blender/gpu/shaders/material/gpu_shader_material_ambient_occlusion.glsl @@ -3,7 +3,7 @@ void node_ambient_occlusion( vec4 color, float distance, vec3 normal, out vec4 result_color, out float result_ao) { vec3 bent_normal; - vec4 rand = texelFetch(utilTex, ivec3(ivec2(gl_FragCoord.xy) % LUT_SIZE, 2.0), 0); + vec4 rand = texelfetch_noise_tex(gl_FragCoord.xy); result_ao = occlusion_compute(normalize(normal), viewPosition, 1.0, rand, bent_normal); result_color = result_ao * color; } diff --git a/source/blender/gpu/shaders/material/gpu_shader_material_hair_info.glsl b/source/blender/gpu/shaders/material/gpu_shader_material_hair_info.glsl index 3b23ac976ae..6330daa4391 100644 --- a/source/blender/gpu/shaders/material/gpu_shader_material_hair_info.glsl +++ b/source/blender/gpu/shaders/material/gpu_shader_material_hair_info.glsl @@ -1,3 +1,15 @@ + +float wang_hash_noise(uint s) +{ + s = (s ^ 61u) ^ (s >> 16u); + s *= 9u; + s = s ^ (s >> 4u); + s *= 0x27d4eb2du; + s = s ^ (s >> 15u); + + return fract(float(s) / 4294967296.0); +} + void node_hair_info(out float is_strand, out float intercept, out float thickness, diff --git a/source/blender/gpu/shaders/material/gpu_shader_material_world_normals.glsl b/source/blender/gpu/shaders/material/gpu_shader_material_world_normals.glsl index f9691beee6f..d33465fa846 100644 --- a/source/blender/gpu/shaders/material/gpu_shader_material_world_normals.glsl +++ b/source/blender/gpu/shaders/material/gpu_shader_material_world_normals.glsl @@ -6,7 +6,7 @@ void world_normals_get(out vec3 N) vec3 B = normalize(cross(worldNormal, hairTangent)); float cos_theta; if (hairThicknessRes == 1) { - vec4 rand = texelFetch(utilTex, ivec3(ivec2(gl_FragCoord.xy) % LUT_SIZE, 2.0), 0); + vec4 rand = texelfetch_noise_tex(gl_FragCoord.xy); /* Random cosine normal distribution on the hair surface. */ cos_theta = rand.x * 2.0 - 1.0; } |