REVIEWED: GPU skninning on Web, some gotchas! #4412
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Ray
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@ -157,8 +157,8 @@ ifeq ($(TARGET_PLATFORM),PLATFORM_WEB)
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EMSDK_PATH ?= C:/emsdk
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EMSCRIPTEN_PATH ?= $(EMSDK_PATH)/upstream/emscripten
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CLANG_PATH = $(EMSDK_PATH)/upstream/bin
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PYTHON_PATH = $(EMSDK_PATH)/python/3.9.2-1_64bit
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NODE_PATH = $(EMSDK_PATH)/node/14.15.5_64bit/bin
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PYTHON_PATH = $(EMSDK_PATH)/python/3.9.2-nuget_64bit
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NODE_PATH = $(EMSDK_PATH)/node/20.18.0_64bit/bin
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export PATH = $(EMSDK_PATH);$(EMSCRIPTEN_PATH);$(CLANG_PATH);$(NODE_PATH);$(PYTHON_PATH):$$(PATH)
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endif
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endif
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@ -110,8 +110,8 @@ ifeq ($(PLATFORM),PLATFORM_WEB)
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EMSDK_PATH ?= C:/emsdk
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EMSCRIPTEN_PATH ?= $(EMSDK_PATH)/upstream/emscripten
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CLANG_PATH = $(EMSDK_PATH)/upstream/bin
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PYTHON_PATH = $(EMSDK_PATH)/python/3.9.2-1_64bit
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NODE_PATH = $(EMSDK_PATH)/node/14.15.5_64bit/bin
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PYTHON_PATH = $(EMSDK_PATH)/python/3.9.2-nuget_64bit
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NODE_PATH = $(EMSDK_PATH)/node/20.18.0_64bit/bin
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export PATH = $(EMSDK_PATH);$(EMSCRIPTEN_PATH);$(CLANG_PATH);$(NODE_PATH);$(PYTHON_PATH):$$(PATH)
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endif
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endif
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@ -434,6 +434,7 @@ TEXT = \
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MODELS = \
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models/models_animation \
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models/models_gpu_skinning \
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models/models_billboard \
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models/models_box_collisions \
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models/models_cubicmap \
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@ -854,6 +855,12 @@ models/models_animation: models/models_animation.c
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--preload-file models/resources/models/iqm/guytex.png@resources/models/iqm/guytex.png \
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--preload-file models/resources/models/iqm/guyanim.iqm@resources/models/iqm/guyanim.iqm
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models/models_gpu_skinning: models/models_gpu_skinning.c
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$(CC) -o $@$(EXT) $< $(CFLAGS) $(INCLUDE_PATHS) $(LDFLAGS) $(LDLIBS) -D$(PLATFORM) -sTOTAL_MEMORY=67108864 \
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--preload-file models/resources/models/gltf/greenman.glb@resources/models/gltf/greenman.glb \
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--preload-file models/resources/shaders/glsl100/skinning.vs@resources/shaders/glsl100/skinning.vs \
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--preload-file models/resources/shaders/glsl100/skinning.fs@resources/shaders/glsl100/skinning.fs
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models/models_billboard: models/models_billboard.c
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$(CC) -o $@$(EXT) $< $(CFLAGS) $(INCLUDE_PATHS) $(LDFLAGS) $(LDLIBS) -D$(PLATFORM) \
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--preload-file models/resources/billboard.png@resources/billboard.png
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@ -24,11 +24,33 @@ void main()
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int boneIndex2 = int(vertexBoneIds.z);
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int boneIndex3 = int(vertexBoneIds.w);
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// WARNING: OpenGL ES 2.0 does not support automatic matrix transposing, neither transpose() function
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mat4 boneMatrixTransposed0 = mat4(
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vec4(boneMatrices[boneIndex0][0].x, boneMatrices[boneIndex0][1].x, boneMatrices[boneIndex0][2].x, boneMatrices[boneIndex0][3].x),
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vec4(boneMatrices[boneIndex0][0].y, boneMatrices[boneIndex0][1].y, boneMatrices[boneIndex0][2].y, boneMatrices[boneIndex0][3].y),
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vec4(boneMatrices[boneIndex0][0].z, boneMatrices[boneIndex0][1].z, boneMatrices[boneIndex0][2].z, boneMatrices[boneIndex0][3].z),
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vec4(boneMatrices[boneIndex0][0].w, boneMatrices[boneIndex0][1].w, boneMatrices[boneIndex0][2].w, boneMatrices[boneIndex0][3].w));
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mat4 boneMatrixTransposed1 = mat4(
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vec4(boneMatrices[boneIndex1][0].x, boneMatrices[boneIndex1][1].x, boneMatrices[boneIndex1][2].x, boneMatrices[boneIndex1][3].x),
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vec4(boneMatrices[boneIndex1][0].y, boneMatrices[boneIndex1][1].y, boneMatrices[boneIndex1][2].y, boneMatrices[boneIndex1][3].y),
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vec4(boneMatrices[boneIndex1][0].z, boneMatrices[boneIndex1][1].z, boneMatrices[boneIndex1][2].z, boneMatrices[boneIndex1][3].z),
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vec4(boneMatrices[boneIndex1][0].w, boneMatrices[boneIndex1][1].w, boneMatrices[boneIndex1][2].w, boneMatrices[boneIndex1][3].w));
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mat4 boneMatrixTransposed2 = mat4(
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vec4(boneMatrices[boneIndex2][0].x, boneMatrices[boneIndex2][1].x, boneMatrices[boneIndex2][2].x, boneMatrices[boneIndex2][3].x),
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vec4(boneMatrices[boneIndex2][0].y, boneMatrices[boneIndex2][1].y, boneMatrices[boneIndex2][2].y, boneMatrices[boneIndex2][3].y),
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vec4(boneMatrices[boneIndex2][0].z, boneMatrices[boneIndex2][1].z, boneMatrices[boneIndex2][2].z, boneMatrices[boneIndex2][3].z),
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vec4(boneMatrices[boneIndex2][0].w, boneMatrices[boneIndex2][1].w, boneMatrices[boneIndex2][2].w, boneMatrices[boneIndex2][3].w));
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mat4 boneMatrixTransposed3 = mat4(
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vec4(boneMatrices[boneIndex3][0].x, boneMatrices[boneIndex3][1].x, boneMatrices[boneIndex3][2].x, boneMatrices[boneIndex3][3].x),
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vec4(boneMatrices[boneIndex3][0].y, boneMatrices[boneIndex3][1].y, boneMatrices[boneIndex3][2].y, boneMatrices[boneIndex3][3].y),
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vec4(boneMatrices[boneIndex3][0].z, boneMatrices[boneIndex3][1].z, boneMatrices[boneIndex3][2].z, boneMatrices[boneIndex3][3].z),
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vec4(boneMatrices[boneIndex3][0].w, boneMatrices[boneIndex3][1].w, boneMatrices[boneIndex3][2].w, boneMatrices[boneIndex3][3].w));
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vec4 skinnedPosition =
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vertexBoneWeights.x*(boneMatrices[boneIndex0]*vec4(vertexPosition, 1.0)) +
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vertexBoneWeights.y*(boneMatrices[boneIndex1]*vec4(vertexPosition, 1.0)) +
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vertexBoneWeights.z*(boneMatrices[boneIndex2]*vec4(vertexPosition, 1.0)) +
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vertexBoneWeights.w*(boneMatrices[boneIndex3]*vec4(vertexPosition, 1.0));
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vertexBoneWeights.x*(boneMatrixTransposed0*vec4(vertexPosition, 1.0)) +
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vertexBoneWeights.y*(boneMatrixTransposed1*vec4(vertexPosition, 1.0)) +
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vertexBoneWeights.z*(boneMatrixTransposed2*vec4(vertexPosition, 1.0)) +
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vertexBoneWeights.w*(boneMatrixTransposed3*vec4(vertexPosition, 1.0));
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fragTexCoord = vertexTexCoord;
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fragColor = vertexColor;
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@ -4337,7 +4337,11 @@ void rlSetUniformMatrix(int locIndex, Matrix mat)
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// Set shader value uniform matrix
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void rlSetUniformMatrices(int locIndex, const Matrix *matrices, int count)
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{
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#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
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#if defined(GRAPHICS_API_OPENGL_33)
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glUniformMatrix4fv(locIndex, count, true, (const float *)matrices);
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#elif defined(GRAPHICS_API_OPENGL_ES2)
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// WARNING: WebGL does not support Matrix transpose ("true" parameter)
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// REF: https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/uniformMatrix
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glUniformMatrix4fv(locIndex, count, true, (const float *)matrices);
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#endif
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}
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