static void ExpandBezier(int &count, int op, const std::vector<SimpleVertex> &simpleVerts, const std::vector<u16> &indices, std::vector<SimpleVertex> &generatedVerts, std::vector<u16> &generatedInds) { int count_u = (op & 0x00FF) >> 0; int count_v = (op & 0xFF00) >> 8; int tess_u = gstate.getPatchDivisionU(); int tess_v = gstate.getPatchDivisionV(); if (tess_u < 1) { tess_u = 1; } if (tess_v < 1) { tess_v = 1; } // Bezier patches share less control points than spline patches. Otherwise they are pretty much the same (except bezier don't support the open/close thing) int num_patches_u = (count_u - 1) / 3; int num_patches_v = (count_v - 1) / 3; int total_patches = num_patches_u * num_patches_v; std::vector<BezierPatch> patches; patches.resize(total_patches); for (int patch_u = 0; patch_u < num_patches_u; patch_u++) { for (int patch_v = 0; patch_v < num_patches_v; patch_v++) { BezierPatch &patch = patches[patch_u + patch_v * num_patches_u]; for (int point = 0; point < 16; ++point) { int idx = (patch_u * 3 + point % 4) + (patch_v * 3 + point / 4) * count_u; patch.points[point] = &simpleVerts[0] + (!indices.empty() ? indices[idx] : idx); } patch.u_index = patch_u * 3; patch.v_index = patch_v * 3; patch.index = patch_v * num_patches_u + patch_u; patch.primType = gstate.getPatchPrimitiveType(); patch.computeNormals = false; patch.patchFacing = false; } } generatedVerts.resize((tess_u + 1) * (tess_v + 1) * total_patches); generatedInds.resize(tess_u * tess_v * 6 * total_patches); count = 0; u8 *dest = (u8 *)&generatedVerts[0]; u16 *inds = &generatedInds[0]; for (int patch_idx = 0; patch_idx < total_patches; ++patch_idx) { const BezierPatch &patch = patches[patch_idx]; TessellateBezierPatch(dest, inds, count, tess_u, tess_v, patch, gstate.vertType); } }
void DrawEngineCommon::SubmitBezier(const void *control_points, const void *indices, int tess_u, int tess_v, int count_u, int count_v, GEPatchPrimType prim_type, bool computeNormals, bool patchFacing, u32 vertType, int *bytesRead) { PROFILE_THIS_SCOPE("bezier"); DispatchFlush(); u16 index_lower_bound = 0; u16 index_upper_bound = count_u * count_v - 1; IndexConverter idxConv(vertType, indices); if (indices) GetIndexBounds(indices, count_u*count_v, vertType, &index_lower_bound, &index_upper_bound); VertexDecoder *origVDecoder = GetVertexDecoder((vertType & 0xFFFFFF) | (gstate.getUVGenMode() << 24)); *bytesRead = count_u * count_v * origVDecoder->VertexSize(); // Real hardware seems to draw nothing when given < 4 either U or V. // This would result in num_patches_u / num_patches_v being 0. if (count_u < 4 || count_v < 4) { return; } // Simplify away bones and morph before proceeding // There are normally not a lot of control points so just splitting decoded should be reasonably safe, although not great. SimpleVertex *simplified_control_points = (SimpleVertex *)(decoded + 65536 * 12); u8 *temp_buffer = decoded + 65536 * 18; u32 origVertType = vertType; vertType = NormalizeVertices((u8 *)simplified_control_points, temp_buffer, (u8 *)control_points, index_lower_bound, index_upper_bound, vertType); VertexDecoder *vdecoder = GetVertexDecoder(vertType); int vertexSize = vdecoder->VertexSize(); if (vertexSize != sizeof(SimpleVertex)) { ERROR_LOG(G3D, "Something went really wrong, vertex size: %i vs %i", vertexSize, (int)sizeof(SimpleVertex)); } float *pos = (float*)(decoded + 65536 * 18); // Size 4 float float *tex = pos + count_u * count_v * 4; // Size 4 float float *col = tex + count_u * count_v * 4; // Size 4 float const bool hasColor = (origVertType & GE_VTYPE_COL_MASK) != 0; const bool hasTexCoords = (origVertType & GE_VTYPE_TC_MASK) != 0; // Bezier patches share less control points than spline patches. Otherwise they are pretty much the same (except bezier don't support the open/close thing) int num_patches_u = (count_u - 1) / 3; int num_patches_v = (count_v - 1) / 3; BezierPatch *patches = nullptr; if (g_Config.bHardwareTessellation && g_Config.bHardwareTransform && !g_Config.bSoftwareRendering) { int posStride, texStride, colStride; tessDataTransfer->PrepareBuffers(pos, tex, col, posStride, texStride, colStride, count_u * count_v, hasColor, hasTexCoords); float *p = pos; float *t = tex; float *c = col; for (int idx = 0; idx < count_u * count_v; idx++) { SimpleVertex *point = simplified_control_points + (indices ? idxConv.convert(idx) : idx); memcpy(p, point->pos.AsArray(), 3 * sizeof(float)); p += posStride; if (hasTexCoords) { memcpy(t, point->uv, 2 * sizeof(float)); t += texStride; } if (hasColor) { memcpy(c, Vec4f::FromRGBA(point->color_32).AsArray(), 4 * sizeof(float)); c += colStride; } } if (!hasColor) { SimpleVertex *point = simplified_control_points + (indices ? idxConv.convert(0) : 0); memcpy(col, Vec4f::FromRGBA(point->color_32).AsArray(), 4 * sizeof(float)); } } else { patches = new BezierPatch[num_patches_u * num_patches_v]; for (int patch_u = 0; patch_u < num_patches_u; patch_u++) { for (int patch_v = 0; patch_v < num_patches_v; patch_v++) { BezierPatch& patch = patches[patch_u + patch_v * num_patches_u]; for (int point = 0; point < 16; ++point) { int idx = (patch_u * 3 + point % 4) + (patch_v * 3 + point / 4) * count_u; patch.points[point] = simplified_control_points + (indices ? idxConv.convert(idx) : idx); } patch.u_index = patch_u * 3; patch.v_index = patch_v * 3; patch.index = patch_v * num_patches_u + patch_u; patch.primType = prim_type; patch.computeNormals = computeNormals; patch.patchFacing = patchFacing; } } } int count = 0; u8 *dest = splineBuffer; // We shouldn't really split up into separate 4x4 patches, instead we should do something that works // like the splines, so we subdivide across the whole "mega-patch". // If specified as 0, uses 1. if (tess_u < 1) { tess_u = 1; } if (tess_v < 1) { tess_v = 1; } u16 *inds = quadIndices_; if (g_Config.bHardwareTessellation && g_Config.bHardwareTransform && !g_Config.bSoftwareRendering) { tessDataTransfer->SendDataToShader(pos, tex, col, count_u * count_v, hasColor, hasTexCoords); TessellateBezierPatchHardware(dest, inds, count, tess_u, tess_v, prim_type); numPatches = num_patches_u * num_patches_v; } else { int maxVertices = SPLINE_BUFFER_SIZE / vertexSize; // Downsample until it fits, in case crazy tessellation factors are sent. while ((tess_u + 1) * (tess_v + 1) * num_patches_u * num_patches_v > maxVertices) { tess_u /= 2; tess_v /= 2; } for (int patch_idx = 0; patch_idx < num_patches_u*num_patches_v; ++patch_idx) { const BezierPatch &patch = patches[patch_idx]; TessellateBezierPatch(dest, inds, count, tess_u, tess_v, patch, origVertType); } delete[] patches; } u32 vertTypeWithIndex16 = (vertType & ~GE_VTYPE_IDX_MASK) | GE_VTYPE_IDX_16BIT; UVScale prevUVScale; if (origVertType & GE_VTYPE_TC_MASK) { // We scaled during Normalize already so let's turn it off when drawing. prevUVScale = gstate_c.uv; gstate_c.uv.uScale = 1.0f; gstate_c.uv.vScale = 1.0f; gstate_c.uv.uOff = 0; gstate_c.uv.vOff = 0; } uint32_t vertTypeID = GetVertTypeID(vertTypeWithIndex16, gstate.getUVGenMode()); int generatedBytesRead; DispatchSubmitPrim(splineBuffer, quadIndices_, primType[prim_type], count, vertTypeID, &generatedBytesRead); DispatchFlush(); if (origVertType & GE_VTYPE_TC_MASK) { gstate_c.uv = prevUVScale; } }