diff --git a/examples/Makefile b/examples/Makefile index bdbb6e35..c1725842 100644 --- a/examples/Makefile +++ b/examples/Makefile @@ -587,7 +587,8 @@ MODELS = \ models/models_rlgl_solar_system \ models/models_skybox \ models/models_waving_cubes \ - models/models_yaw_pitch_roll + models/models_yaw_pitch_roll \ + models/models_gpu_skinning SHADERS = \ shaders/shaders_basic_lighting \ diff --git a/examples/models/models_gpu_skinning.c b/examples/models/models_gpu_skinning.c new file mode 100644 index 00000000..e9cd73f4 --- /dev/null +++ b/examples/models/models_gpu_skinning.c @@ -0,0 +1,117 @@ +/******************************************************************************************* +* +* raylib [core] example - Doing skinning on the gpu using a vertex shader +* +* Example originally created with raylib 4.5, last time updated with raylib 4.5 +* +* Example contributed by Daniel Holden (@orangeduck) and reviewed by Ramon Santamaria (@raysan5) +* +* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified, +* BSD-like license that allows static linking with closed source software +* +* Copyright (c) 2024 Daniel Holden (@orangeduck) +* +********************************************************************************************/ + +#include "raylib.h" + +#include "raymath.h" + +#if defined(PLATFORM_DESKTOP) + #define GLSL_VERSION 330 +#else // PLATFORM_ANDROID, PLATFORM_WEB + #define GLSL_VERSION 100 +#endif + +//------------------------------------------------------------------------------------ +// Program main entry point +//------------------------------------------------------------------------------------ +int main(void) +{ + // Initialization + //-------------------------------------------------------------------------------------- + const int screenWidth = 800; + const int screenHeight = 450; + + InitWindow(screenWidth, screenHeight, "raylib [models] example - GPU skinning"); + + // Define the camera to look into our 3d world + Camera camera = { 0 }; + camera.position = (Vector3){ 5.0f, 5.0f, 5.0f }; // Camera position + camera.target = (Vector3){ 0.0f, 2.0f, 0.0f }; // Camera looking at point + camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target) + camera.fovy = 45.0f; // Camera field-of-view Y + camera.projection = CAMERA_PERSPECTIVE; // Camera projection type + + // Load gltf model + Model characterModel = LoadModel("resources/models/gltf/greenman.glb"); // Load character model + + // Load skinning shader + Shader skinningShader = LoadShader(TextFormat("resources/shaders/glsl%i/skinning.vs", GLSL_VERSION), + TextFormat("resources/shaders/glsl%i/skinning.fs", GLSL_VERSION)); + + characterModel.materials[1].shader = skinningShader; + + // Load gltf model animations + int animsCount = 0; + unsigned int animIndex = 0; + unsigned int animCurrentFrame = 0; + ModelAnimation *modelAnimations = LoadModelAnimations("resources/models/gltf/greenman.glb", &animsCount); + + Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model position + + DisableCursor(); // Limit cursor to relative movement inside the window + + SetTargetFPS(60); // Set our game to run at 60 frames-per-second + //-------------------------------------------------------------------------------------- + + // Main game loop + while (!WindowShouldClose()) // Detect window close button or ESC key + { + // Update + //---------------------------------------------------------------------------------- + UpdateCamera(&camera, CAMERA_THIRD_PERSON); + + // Select current animation + if (IsKeyPressed(KEY_T)) animIndex = (animIndex + 1)%animsCount; + else if (IsKeyPressed(KEY_G)) animIndex = (animIndex + animsCount - 1)%animsCount; + + // Update model animation + ModelAnimation anim = modelAnimations[animIndex]; + animCurrentFrame = (animCurrentFrame + 1)%anim.frameCount; + UpdateModelAnimationBoneMatrices(characterModel, anim, animCurrentFrame); + //---------------------------------------------------------------------------------- + + // Draw + //---------------------------------------------------------------------------------- + BeginDrawing(); + + ClearBackground(RAYWHITE); + + BeginMode3D(camera); + + // Draw character + characterModel.transform = MatrixTranslate(position.x, position.y, position.z); + UpdateModelAnimationBoneMatrices(characterModel, anim, animCurrentFrame); + DrawMesh(characterModel.meshes[0], characterModel.materials[1], characterModel.transform); + + DrawGrid(10, 1.0f); + EndMode3D(); + + DrawText("Use the T/G to switch animation", 10, 10, 20, GRAY); + + EndDrawing(); + //---------------------------------------------------------------------------------- + } + + // De-Initialization + //-------------------------------------------------------------------------------------- + UnloadModelAnimations(modelAnimations, animsCount); + UnloadModel(characterModel); // Unload character model and meshes/material + UnloadShader(skinningShader); + + CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + + return 0; +} \ No newline at end of file diff --git a/examples/models/resources/shaders/glsl100/skinning.fs b/examples/models/resources/shaders/glsl100/skinning.fs new file mode 100644 index 00000000..ef656803 --- /dev/null +++ b/examples/models/resources/shaders/glsl100/skinning.fs @@ -0,0 +1,17 @@ +#version 100 + +// Input vertex attributes (from vertex shader) +in vec2 fragTexCoord; +in vec4 fragColor; + +// Output fragment color +out vec4 finalColor; + +uniform sampler2D texture0; +uniform vec4 colDiffuse; + +void main() +{ + vec4 texelColor = texture(texture0, fragTexCoord); + finalColor = texelColor*colDiffuse*fragColor; +} diff --git a/examples/models/resources/shaders/glsl100/skinning.vs b/examples/models/resources/shaders/glsl100/skinning.vs new file mode 100644 index 00000000..9c92e2a8 --- /dev/null +++ b/examples/models/resources/shaders/glsl100/skinning.vs @@ -0,0 +1,34 @@ +#version 100 + +in vec3 vertexPosition; +in vec2 vertexTexCoord; +in vec4 vertexColor; +in vec4 vertexBoneIds; +in vec4 vertexBoneWeights; + +#define MAX_BONE_NUM 128 +uniform mat4 boneMatrices[MAX_BONE_NUM]; + +uniform mat4 mvp; + +out vec2 fragTexCoord; +out vec4 fragColor; + +void main() +{ + int boneIndex0 = int(vertexBoneIds.x); + int boneIndex1 = int(vertexBoneIds.y); + int boneIndex2 = int(vertexBoneIds.z); + int boneIndex3 = int(vertexBoneIds.w); + + vec4 skinnedPosition = + vertexBoneWeights.x * (boneMatrices[boneIndex0] * vec4(vertexPosition, 1.0f)) + + vertexBoneWeights.y * (boneMatrices[boneIndex1] * vec4(vertexPosition, 1.0f)) + + vertexBoneWeights.z * (boneMatrices[boneIndex2] * vec4(vertexPosition, 1.0f)) + + vertexBoneWeights.w * (boneMatrices[boneIndex3] * vec4(vertexPosition, 1.0f)); + + fragTexCoord = vertexTexCoord; + fragColor = vertexColor; + + gl_Position = mvp * skinnedPosition; +} \ No newline at end of file diff --git a/examples/models/resources/shaders/glsl330/skinning.fs b/examples/models/resources/shaders/glsl330/skinning.fs new file mode 100644 index 00000000..d4311ffc --- /dev/null +++ b/examples/models/resources/shaders/glsl330/skinning.fs @@ -0,0 +1,17 @@ +#version 330 + +// Input vertex attributes (from vertex shader) +in vec2 fragTexCoord; +in vec4 fragColor; + +// Output fragment color +out vec4 finalColor; + +uniform sampler2D texture0; +uniform vec4 colDiffuse; + +void main() +{ + vec4 texelColor = texture(texture0, fragTexCoord); + finalColor = texelColor*colDiffuse*fragColor; +} diff --git a/examples/models/resources/shaders/glsl330/skinning.vs b/examples/models/resources/shaders/glsl330/skinning.vs new file mode 100644 index 00000000..2dc976c4 --- /dev/null +++ b/examples/models/resources/shaders/glsl330/skinning.vs @@ -0,0 +1,34 @@ +#version 330 + +in vec3 vertexPosition; +in vec2 vertexTexCoord; +in vec4 vertexColor; +in vec4 vertexBoneIds; +in vec4 vertexBoneWeights; + +#define MAX_BONE_NUM 128 +uniform mat4 boneMatrices[MAX_BONE_NUM]; + +uniform mat4 mvp; + +out vec2 fragTexCoord; +out vec4 fragColor; + +void main() +{ + int boneIndex0 = int(vertexBoneIds.x); + int boneIndex1 = int(vertexBoneIds.y); + int boneIndex2 = int(vertexBoneIds.z); + int boneIndex3 = int(vertexBoneIds.w); + + vec4 skinnedPosition = + vertexBoneWeights.x * (boneMatrices[boneIndex0] * vec4(vertexPosition, 1.0f)) + + vertexBoneWeights.y * (boneMatrices[boneIndex1] * vec4(vertexPosition, 1.0f)) + + vertexBoneWeights.z * (boneMatrices[boneIndex2] * vec4(vertexPosition, 1.0f)) + + vertexBoneWeights.w * (boneMatrices[boneIndex3] * vec4(vertexPosition, 1.0f)); + + fragTexCoord = vertexTexCoord; + fragColor = vertexColor; + + gl_Position = mvp * skinnedPosition; +} \ No newline at end of file diff --git a/src/config.h b/src/config.h index 9cbe90e3..f6e3fe30 100644 --- a/src/config.h +++ b/src/config.h @@ -113,13 +113,15 @@ #define RL_CULL_DISTANCE_FAR 1000.0 // Default projection matrix far cull distance // Default shader vertex attribute locations -#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION 0 -#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD 1 -#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL 2 -#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR 3 -#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT 4 -#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2 5 -#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES 6 +#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION 0 +#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD 1 +#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL 2 +#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR 3 +#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT 4 +#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2 5 +#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS 6 +#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS 7 +#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES 8 // Default shader vertex attribute names to set location points // NOTE: When a new shader is loaded, the following locations are tried to be set for convenience diff --git a/src/raylib.h b/src/raylib.h index 08474b5e..ee34b644 100644 --- a/src/raylib.h +++ b/src/raylib.h @@ -352,8 +352,10 @@ typedef struct Mesh { // Animation vertex data float *animVertices; // Animated vertex positions (after bones transformations) float *animNormals; // Animated normals (after bones transformations) - unsigned char *boneIds; // Vertex bone ids, max 255 bone ids, up to 4 bones influence by vertex (skinning) - float *boneWeights; // Vertex bone weight, up to 4 bones influence by vertex (skinning) + unsigned char *boneIds; // Vertex bone ids, max 255 bone ids, up to 4 bones influence by vertex (skinning) (shader-location = 6) + float *boneWeights; // Vertex bone weight, up to 4 bones influence by vertex (skinning) (shader-location = 7) + Matrix *boneMatrices; // Bones animated transformation matrices + int boneCount; // Number of bones // OpenGL identifiers unsigned int vaoId; // OpenGL Vertex Array Object id @@ -790,7 +792,10 @@ typedef enum { SHADER_LOC_MAP_CUBEMAP, // Shader location: samplerCube texture: cubemap SHADER_LOC_MAP_IRRADIANCE, // Shader location: samplerCube texture: irradiance SHADER_LOC_MAP_PREFILTER, // Shader location: samplerCube texture: prefilter - SHADER_LOC_MAP_BRDF // Shader location: sampler2d texture: brdf + SHADER_LOC_MAP_BRDF, // Shader location: sampler2d texture: brdf + SHADER_LOC_VERTEX_BONEIDS, // Shader location: vertex attribute: boneIds + SHADER_LOC_VERTEX_BONEWEIGHTS, // Shader location: vertex attribute: boneWeights + SHADER_LOC_BONE_MATRICES // Shader location: array of matrices uniform: boneMatrices } ShaderLocationIndex; #define SHADER_LOC_MAP_DIFFUSE SHADER_LOC_MAP_ALBEDO @@ -1591,6 +1596,7 @@ RLAPI void UpdateModelAnimation(Model model, ModelAnimation anim, int frame); RLAPI void UnloadModelAnimation(ModelAnimation anim); // Unload animation data RLAPI void UnloadModelAnimations(ModelAnimation *animations, int animCount); // Unload animation array data RLAPI bool IsModelAnimationValid(Model model, ModelAnimation anim); // Check model animation skeleton match +RLAPI void UpdateModelAnimationBoneMatrices(Model model, ModelAnimation anim, int frame); // Update model animation mesh bone matrices // Collision detection functions RLAPI bool CheckCollisionSpheres(Vector3 center1, float radius1, Vector3 center2, float radius2); // Check collision between two spheres diff --git a/src/rcore.c b/src/rcore.c index 5de1fc72..2fd79f5c 100644 --- a/src/rcore.c +++ b/src/rcore.c @@ -1303,6 +1303,8 @@ Shader LoadShaderFromMemory(const char *vsCode, const char *fsCode) // vertex color location = 3 // vertex tangent location = 4 // vertex texcoord2 location = 5 + // vertex boneIds location = 6 + // vertex boneWeights location = 7 // NOTE: If any location is not found, loc point becomes -1 @@ -1318,6 +1320,8 @@ Shader LoadShaderFromMemory(const char *vsCode, const char *fsCode) shader.locs[SHADER_LOC_VERTEX_NORMAL] = rlGetLocationAttrib(shader.id, RL_DEFAULT_SHADER_ATTRIB_NAME_NORMAL); shader.locs[SHADER_LOC_VERTEX_TANGENT] = rlGetLocationAttrib(shader.id, RL_DEFAULT_SHADER_ATTRIB_NAME_TANGENT); shader.locs[SHADER_LOC_VERTEX_COLOR] = rlGetLocationAttrib(shader.id, RL_DEFAULT_SHADER_ATTRIB_NAME_COLOR); + shader.locs[SHADER_LOC_VERTEX_BONEIDS] = rlGetLocationAttrib(shader.id, RL_DEFAULT_SHADER_ATTRIB_NAME_BONEIDS); + shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS] = rlGetLocationAttrib(shader.id, RL_DEFAULT_SHADER_ATTRIB_NAME_BONEWEIGHTS); // Get handles to GLSL uniform locations (vertex shader) shader.locs[SHADER_LOC_MATRIX_MVP] = rlGetLocationUniform(shader.id, RL_DEFAULT_SHADER_UNIFORM_NAME_MVP); @@ -1325,6 +1329,7 @@ Shader LoadShaderFromMemory(const char *vsCode, const char *fsCode) shader.locs[SHADER_LOC_MATRIX_PROJECTION] = rlGetLocationUniform(shader.id, RL_DEFAULT_SHADER_UNIFORM_NAME_PROJECTION); shader.locs[SHADER_LOC_MATRIX_MODEL] = rlGetLocationUniform(shader.id, RL_DEFAULT_SHADER_UNIFORM_NAME_MODEL); shader.locs[SHADER_LOC_MATRIX_NORMAL] = rlGetLocationUniform(shader.id, RL_DEFAULT_SHADER_UNIFORM_NAME_NORMAL); + shader.locs[SHADER_LOC_BONE_MATRICES] = rlGetLocationUniform(shader.id, RL_DEFAULT_SHADER_UNIFORM_NAME_BONE_MATRICES); // Get handles to GLSL uniform locations (fragment shader) shader.locs[SHADER_LOC_COLOR_DIFFUSE] = rlGetLocationUniform(shader.id, RL_DEFAULT_SHADER_UNIFORM_NAME_COLOR); diff --git a/src/rlgl.h b/src/rlgl.h index 9b94d402..b98934a1 100644 --- a/src/rlgl.h +++ b/src/rlgl.h @@ -68,12 +68,15 @@ * #define RL_DEFAULT_SHADER_ATTRIB_NAME_COLOR "vertexColor" // Bound by default to shader location: RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR * #define RL_DEFAULT_SHADER_ATTRIB_NAME_TANGENT "vertexTangent" // Bound by default to shader location: RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT * #define RL_DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2 "vertexTexCoord2" // Bound by default to shader location: RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2 +* #define RL_DEFAULT_SHADER_ATTRIB_NAME_BONEIDS "vertexBoneIds" // Bound by default to shader location: RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS +* #define RL_DEFAULT_SHADER_ATTRIB_NAME_BONEWEIGHTS "vertexBoneWeights" // Bound by default to shader location: RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS * #define RL_DEFAULT_SHADER_UNIFORM_NAME_MVP "mvp" // model-view-projection matrix * #define RL_DEFAULT_SHADER_UNIFORM_NAME_VIEW "matView" // view matrix * #define RL_DEFAULT_SHADER_UNIFORM_NAME_PROJECTION "matProjection" // projection matrix * #define RL_DEFAULT_SHADER_UNIFORM_NAME_MODEL "matModel" // model matrix * #define RL_DEFAULT_SHADER_UNIFORM_NAME_NORMAL "matNormal" // normal matrix (transpose(inverse(matModelView))) * #define RL_DEFAULT_SHADER_UNIFORM_NAME_COLOR "colDiffuse" // color diffuse (base tint color, multiplied by texture color) +* #define RL_DEFAULT_SHADER_UNIFORM_NAME_BONE_MATRICES "boneMatrices" // bone matrices * #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE0 "texture0" // texture0 (texture slot active 0) * #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE1 "texture1" // texture1 (texture slot active 1) * #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE2 "texture2" // texture2 (texture slot active 2) @@ -324,22 +327,28 @@ // Default shader vertex attribute locations #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION - #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION 0 + #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION 0 #endif #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD - #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD 1 + #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD 1 #endif #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL - #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL 2 + #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL 2 #endif #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR - #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR 3 + #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR 3 #endif #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT -#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT 4 +#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT 4 #endif #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2 - #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2 5 + #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2 5 +#endif +#ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS + #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS 6 +#endif +#ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS + #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS 7 #endif //---------------------------------------------------------------------------------- @@ -759,6 +768,7 @@ RLAPI int rlGetLocationUniform(unsigned int shaderId, const char *uniformName); RLAPI int rlGetLocationAttrib(unsigned int shaderId, const char *attribName); // Get shader location attribute RLAPI void rlSetUniform(int locIndex, const void *value, int uniformType, int count); // Set shader value uniform RLAPI void rlSetUniformMatrix(int locIndex, Matrix mat); // Set shader value matrix +RLAPI void rlSetUniformMatrices(int locIndex, const Matrix *mat, int count); // Set shader value matrices RLAPI void rlSetUniformSampler(int locIndex, unsigned int textureId); // Set shader value sampler RLAPI void rlSetShader(unsigned int id, int *locs); // Set shader currently active (id and locations) @@ -977,6 +987,12 @@ RLAPI void rlLoadDrawQuad(void); // Load and draw a quad #ifndef RL_DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2 #define RL_DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2 "vertexTexCoord2" // Bound by default to shader location: RL_DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2 #endif +#ifndef RL_DEFAULT_SHADER_ATTRIB_NAME_BONEIDS + #define RL_DEFAULT_SHADER_ATTRIB_NAME_BONEIDS "vertexBoneIds" // Bound by default to shader location: RL_DEFAULT_SHADER_ATTRIB_NAME_BONEIDS +#endif +#ifndef RL_DEFAULT_SHADER_ATTRIB_NAME_BONEWEIGHTS + #define RL_DEFAULT_SHADER_ATTRIB_NAME_BONEWEIGHTS "vertexBoneWeights" // Bound by default to shader location: RL_DEFAULT_SHADER_ATTRIB_NAME_BONEWEIGHTS +#endif #ifndef RL_DEFAULT_SHADER_UNIFORM_NAME_MVP #define RL_DEFAULT_SHADER_UNIFORM_NAME_MVP "mvp" // model-view-projection matrix @@ -996,6 +1012,9 @@ RLAPI void rlLoadDrawQuad(void); // Load and draw a quad #ifndef RL_DEFAULT_SHADER_UNIFORM_NAME_COLOR #define RL_DEFAULT_SHADER_UNIFORM_NAME_COLOR "colDiffuse" // color diffuse (base tint color, multiplied by texture color) #endif +#ifndef RL_DEFAULT_SHADER_UNIFORM_NAME_BONE_MATRICES + #define RL_DEFAULT_SHADER_UNIFORM_NAME_BONE_MATRICES "boneMatrices" // bone matrices +#endif #ifndef RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE0 #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE0 "texture0" // texture0 (texture slot active 0) #endif @@ -4148,6 +4167,8 @@ unsigned int rlLoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId) glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR, RL_DEFAULT_SHADER_ATTRIB_NAME_COLOR); glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT, RL_DEFAULT_SHADER_ATTRIB_NAME_TANGENT); glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2, RL_DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2); + glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS, RL_DEFAULT_SHADER_ATTRIB_NAME_BONEIDS); + glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS, RL_DEFAULT_SHADER_ATTRIB_NAME_BONEWEIGHTS); // NOTE: If some attrib name is no found on the shader, it locations becomes -1 @@ -4283,6 +4304,14 @@ void rlSetUniformMatrix(int locIndex, Matrix mat) #endif } +// Set shader value uniform matrix +void rlSetUniformMatrices(int locIndex, const Matrix *matrices, int count) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + glUniformMatrix4fv(locIndex, count, true, (const float*)matrices); +#endif +} + // Set shader value uniform sampler void rlSetUniformSampler(int locIndex, unsigned int textureId) { diff --git a/src/rmodels.c b/src/rmodels.c index 9994ddb7..055fb1b1 100644 --- a/src/rmodels.c +++ b/src/rmodels.c @@ -130,7 +130,7 @@ #define MAX_MATERIAL_MAPS 12 // Maximum number of maps supported #endif #ifndef MAX_MESH_VERTEX_BUFFERS - #define MAX_MESH_VERTEX_BUFFERS 7 // Maximum vertex buffers (VBO) per mesh + #define MAX_MESH_VERTEX_BUFFERS 9 // Maximum vertex buffers (VBO) per mesh #endif //---------------------------------------------------------------------------------- @@ -1248,11 +1248,13 @@ void UploadMesh(Mesh *mesh, bool dynamic) mesh->vaoId = 0; // Vertex Array Object mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION] = 0; // Vertex buffer: positions mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD] = 0; // Vertex buffer: texcoords - mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL] = 0; // Vertex buffer: normals - mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR] = 0; // Vertex buffer: colors - mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT] = 0; // Vertex buffer: tangents - mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2] = 0; // Vertex buffer: texcoords2 - mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES] = 0; // Vertex buffer: indices + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL] = 0; // Vertex buffer: normals + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR] = 0; // Vertex buffer: colors + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT] = 0; // Vertex buffer: tangents + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2] = 0; // Vertex buffer: texcoords2 + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS] = 0; // Vertex buffer: boneIds + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS] = 0; // Vertex buffer: boneWeights + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES] = 0; // Vertex buffer: indices #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) mesh->vaoId = rlLoadVertexArray(); @@ -1338,6 +1340,38 @@ void UploadMesh(Mesh *mesh, bool dynamic) rlSetVertexAttributeDefault(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2, value, SHADER_ATTRIB_VEC2, 2); rlDisableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2); } + + if (mesh->boneIds != NULL) + { + // Enable vertex attribute: boneIds (shader-location = 6) + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS] = rlLoadVertexBuffer(mesh->boneIds, mesh->vertexCount*4*sizeof(unsigned char), dynamic); + rlSetVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS, 4, RL_UNSIGNED_BYTE, 0, 0, 0); + rlEnableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS); + } + else + { + // Default vertex attribute: boneIds + // WARNING: Default value provided to shader if location available + float value[4] = { 0.0f, 0.0f, 0.0f, 0.0f }; + rlSetVertexAttributeDefault(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS, value, SHADER_ATTRIB_VEC4, 4); + rlDisableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS); + } + + if (mesh->boneWeights != NULL) + { + // Enable vertex attribute: boneWeights (shader-location = 7) + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS] = rlLoadVertexBuffer(mesh->boneWeights, mesh->vertexCount*4*sizeof(float), dynamic); + rlSetVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS, 4, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS); + } + else + { + // Default vertex attribute: boneWeights + // WARNING: Default value provided to shader if location available + float value[4] = { 0.0f, 0.0f, 0.0f, 0.0f }; + rlSetVertexAttributeDefault(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS, value, SHADER_ATTRIB_VEC4, 2); + rlDisableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS); + } if (mesh->indices != NULL) { @@ -1451,6 +1485,13 @@ void DrawMesh(Mesh mesh, Material material, Matrix transform) // Upload model normal matrix (if locations available) if (material.shader.locs[SHADER_LOC_MATRIX_NORMAL] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_NORMAL], MatrixTranspose(MatrixInvert(matModel))); + + // Upload Bone Transforms + if (material.shader.locs[SHADER_LOC_BONE_MATRICES] != -1 && mesh.boneMatrices) + { + rlSetUniformMatrices(material.shader.locs[SHADER_LOC_BONE_MATRICES], mesh.boneMatrices, mesh.boneCount); + } + //----------------------------------------------------- // Bind active texture maps (if available) @@ -1529,6 +1570,22 @@ void DrawMesh(Mesh mesh, Material material, Matrix transform) rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02], 2, RL_FLOAT, 0, 0, 0); rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02]); } + + // Bind mesh VBO data: vertex bone ids (shader-location = 6, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_BONEIDS] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEIDS], 4, RL_UNSIGNED_BYTE, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEIDS]); + } + + // Bind mesh VBO data: vertex bone weights (shader-location = 7, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS], 4, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS]); + } if (mesh.indices != NULL) rlEnableVertexBufferElement(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES]); } @@ -1671,6 +1728,13 @@ void DrawMeshInstanced(Mesh mesh, Material material, const Matrix *transforms, i // Upload model normal matrix (if locations available) if (material.shader.locs[SHADER_LOC_MATRIX_NORMAL] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_NORMAL], MatrixTranspose(MatrixInvert(matModel))); + + // Upload Bone Transforms + if (material.shader.locs[SHADER_LOC_BONE_MATRICES] != -1 && mesh.boneMatrices) + { + rlSetUniformMatrices(material.shader.locs[SHADER_LOC_BONE_MATRICES], mesh.boneMatrices, mesh.boneCount); + } + //----------------------------------------------------- // Bind active texture maps (if available) @@ -1747,6 +1811,22 @@ void DrawMeshInstanced(Mesh mesh, Material material, const Matrix *transforms, i rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02], 2, RL_FLOAT, 0, 0, 0); rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02]); } + + // Bind mesh VBO data: vertex bone ids (shader-location = 6, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_BONEIDS] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEIDS], 4, RL_UNSIGNED_BYTE, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEIDS]); + } + + // Bind mesh VBO data: vertex bone weights (shader-location = 7, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS], 4, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS]); + } if (mesh.indices != NULL) rlEnableVertexBufferElement(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES]); } @@ -1825,6 +1905,7 @@ void UnloadMesh(Mesh mesh) RL_FREE(mesh.animNormals); RL_FREE(mesh.boneWeights); RL_FREE(mesh.boneIds); + RL_FREE(mesh.boneMatrices); } // Export mesh data to file @@ -2255,6 +2336,50 @@ void UpdateModelAnimation(Model model, ModelAnimation anim, int frame) } } +void UpdateModelAnimationBoneMatrices(Model model, ModelAnimation anim, int frame) +{ + if ((anim.frameCount > 0) && (anim.bones != NULL) && (anim.framePoses != NULL)) + { + if (frame >= anim.frameCount) frame = frame%anim.frameCount; + + for (int i = 0; i < model.meshCount; i++) + { + if (model.meshes[i].boneMatrices) + { + assert(model.meshes[i].boneCount == anim.boneCount); + + for (int boneId = 0; boneId < model.meshes[i].boneCount; boneId++) + { + Vector3 inTranslation = model.bindPose[boneId].translation; + Quaternion inRotation = model.bindPose[boneId].rotation; + Vector3 inScale = model.bindPose[boneId].scale; + + Vector3 outTranslation = anim.framePoses[frame][boneId].translation; + Quaternion outRotation = anim.framePoses[frame][boneId].rotation; + Vector3 outScale = anim.framePoses[frame][boneId].scale; + + Vector3 invTranslation = Vector3RotateByQuaternion(Vector3Negate(inTranslation), QuaternionInvert(inRotation)); + Quaternion invRotation = QuaternionInvert(inRotation); + Vector3 invScale = Vector3Divide((Vector3){ 1.0f, 1.0f, 1.0f }, inScale); + + Vector3 boneTranslation = Vector3Add( + Vector3RotateByQuaternion(Vector3Multiply(outScale, invTranslation), + outRotation), outTranslation); + Quaternion boneRotation = QuaternionMultiply(outRotation, invRotation); + Vector3 boneScale = Vector3Multiply(outScale, invScale); + + Matrix boneMatrix = MatrixMultiply(MatrixMultiply( + QuaternionToMatrix(boneRotation), + MatrixTranslate(boneTranslation.x, boneTranslation.y, boneTranslation.z)), + MatrixScale(boneScale.x, boneScale.y, boneScale.z)); + + model.meshes[i].boneMatrices[boneId] = boneMatrix; + } + } + } + } +} + // Unload animation array data void UnloadModelAnimations(ModelAnimation *animations, int animCount) { @@ -4671,6 +4796,17 @@ static Model LoadIQM(const char *fileName) } BuildPoseFromParentJoints(model.bones, model.boneCount, model.bindPose); + + for (int i = 0; i < model.meshCount; i++) + { + model.meshes[i].boneCount = model.boneCount; + model.meshes[i].boneMatrices = RL_CALLOC(model.meshes[i].boneCount, sizeof(Matrix)); + + for (int j = 0; j < model.meshes[i].boneCount; j++) + { + model.meshes[i].boneMatrices[j] = MatrixIdentity(); + } + } UnloadFileData(fileData); @@ -5754,6 +5890,15 @@ static Model LoadGLTF(const char *fileName) { memcpy(model.meshes[meshIndex].animNormals, model.meshes[meshIndex].normals, model.meshes[meshIndex].vertexCount*3*sizeof(float)); } + + // Bone Transform Matrices + model.meshes[meshIndex].boneCount = model.boneCount; + model.meshes[meshIndex].boneMatrices = RL_CALLOC(model.meshes[meshIndex].boneCount, sizeof(Matrix)); + + for (int j = 0; j < model.meshes[meshIndex].boneCount; j++) + { + model.meshes[meshIndex].boneMatrices[j] = MatrixIdentity(); + } meshIndex++; // Move to next mesh } @@ -6522,6 +6667,13 @@ static Model LoadM3D(const char *fileName) { memcpy(model.meshes[i].animVertices, model.meshes[i].vertices, model.meshes[i].vertexCount*3*sizeof(float)); memcpy(model.meshes[i].animNormals, model.meshes[i].normals, model.meshes[i].vertexCount*3*sizeof(float)); + + model.meshes[i].boneCount = model.boneCount; + model.meshes[i].boneMatrices = RL_CALLOC(model.meshes[i].boneCount, sizeof(Matrix)); + for (j = 0; j < model.meshes[i].boneCount; j++) + { + model.meshes[i].boneMatrices[j] = MatrixIdentity(); + } } }